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Message-ID: <20190813144944.GA5049@Gentoo>
Date: Tue, 13 Aug 2019 20:19:49 +0530
From: Bhaskar Chowdhury <unixbhaskar@...il.com>
To: Ben Hutchings <ben@...adent.org.uk>
Cc: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, Jiri Slaby <jslaby@...e.cz>,
stable@...r.kernel.org, lwn@....net
Subject: Re: Linux 3.16.72
Thanks, a bunch Ben :)
On 14:35 Tue 13 Aug 2019, Ben Hutchings wrote:
>I'm announcing the release of the 3.16.72 kernel.
>
>All users of the 3.16 kernel series should upgrade.
>
>The updated 3.16.y git tree can be found at:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-3.16.y
>and can be browsed at the normal kernel.org git web browser:
> https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git
>
>The diff from 3.16.71 is attached to this message.
>
>Ben.
>
>------------
>
> Documentation/kernel-parameters.txt | 5 +
> Documentation/siphash.txt | 100 ++++++++++
> Documentation/usb/power-management.txt | 14 +-
> Documentation/virtual/kvm/api.txt | 16 +-
> MAINTAINERS | 7 +
> Makefile | 2 +-
> arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi | 1 +
> arch/arm/mach-imx/cpuidle-imx6q.c | 27 +--
> arch/mips/kernel/scall64-o32.S | 2 +-
> arch/powerpc/include/asm/vdso_datapage.h | 8 +-
> arch/powerpc/kernel/signal_32.c | 3 +
> arch/powerpc/kernel/signal_64.c | 5 +
> arch/powerpc/kernel/vdso32/gettimeofday.S | 2 +-
> arch/powerpc/kernel/vdso64/gettimeofday.S | 2 +-
> arch/x86/include/asm/calling.h | 18 ++
> arch/x86/include/asm/cpufeatures.h | 41 ++--
> arch/x86/include/asm/kvm_host.h | 13 +-
> arch/x86/include/asm/xen/hypercall.h | 3 +
> arch/x86/kernel/cpu/bugs.c | 105 +++++++++-
> arch/x86/kernel/cpu/common.c | 42 ++--
> arch/x86/kernel/entry_64.S | 73 +++++--
> arch/x86/kernel/kprobes/core.c | 48 ++++-
> arch/x86/kernel/process.c | 8 +-
> arch/x86/kvm/cpuid.c | 5 +
> arch/x86/kvm/mmu.c | 13 +-
> arch/x86/kvm/mmu.h | 2 +-
> arch/x86/kvm/vmx.c | 15 --
> arch/x86/kvm/x86.c | 18 +-
> arch/xtensa/kernel/stacktrace.c | 6 +-
> block/bio.c | 5 +-
> drivers/acpi/acpica/nsobject.c | 4 +
> drivers/block/floppy.c | 32 +++-
> drivers/block/xsysace.c | 2 +
> drivers/bluetooth/hci_ath.c | 3 +
> drivers/bluetooth/hci_ldisc.c | 9 +
> drivers/bluetooth/hci_uart.h | 1 +
> drivers/gpio/gpio-adnp.c | 6 +-
> drivers/iio/adc/ad_sigma_delta.c | 1 +
> drivers/iio/adc/at91_adc.c | 28 +--
> drivers/iio/dac/mcp4725.c | 1 +
> drivers/iio/industrialio-buffer.c | 6 +-
> drivers/iio/industrialio-core.c | 4 +-
> drivers/infiniband/hw/mlx4/alias_GUID.c | 2 +-
> drivers/input/tablet/gtco.c | 20 +-
> drivers/iommu/amd_iommu_init.c | 2 +-
> drivers/iommu/intel-iommu.c | 3 +
> drivers/md/dm-table.c | 39 ++++
> drivers/md/dm.c | 31 ++-
> drivers/media/usb/tlg2300/pd-common.h | 2 +-
> drivers/mtd/chips/cfi_cmdset_0002.c | 6 +-
> drivers/net/ethernet/3com/3c515.c | 2 +-
> drivers/net/ethernet/8390/mac8390.c | 37 ++--
> drivers/net/ethernet/neterion/vxge/vxge-config.c | 1 +
> drivers/net/macvtap.c | 3 -
> drivers/net/phy/phy_device.c | 5 +-
> drivers/net/ppp/pptp.c | 2 +-
> drivers/net/slip/slhc.c | 2 +-
> drivers/net/team/team.c | 6 +
> drivers/net/tun.c | 6 +-
> drivers/net/wireless/rt2x00/rt2x00.h | 1 -
> drivers/net/wireless/rt2x00/rt2x00mac.c | 10 -
> drivers/net/wireless/rt2x00/rt2x00queue.c | 15 +-
> drivers/pci/quirks.c | 2 +
> drivers/s390/scsi/zfcp_erp.c | 17 ++
> drivers/s390/scsi/zfcp_ext.h | 2 +
> drivers/s390/scsi/zfcp_scsi.c | 4 +
> drivers/scsi/libsas/sas_expander.c | 9 +-
> drivers/staging/comedi/drivers/vmk80xx.c | 8 +-
> drivers/staging/iio/meter/ade7854.c | 2 +-
> drivers/staging/rtl8712/rtl8712_cmd.c | 10 +-
> drivers/staging/rtl8712/rtl8712_cmd.h | 2 +-
> drivers/staging/speakup/speakup_soft.c | 12 +-
> drivers/staging/speakup/spk_priv.h | 1 +
> drivers/staging/speakup/synth.c | 6 +
> drivers/staging/usbip/stub_rx.c | 12 +-
> drivers/staging/usbip/usbip_common.h | 7 +
> drivers/tty/serial/atmel_serial.c | 4 +
> drivers/tty/serial/max310x.c | 2 +
> drivers/tty/serial/mxs-auart.c | 4 +
> drivers/tty/serial/sh-sci.c | 12 +-
> drivers/usb/core/driver.c | 13 --
> drivers/usb/core/message.c | 4 +-
> drivers/usb/host/xhci-hub.c | 19 +-
> drivers/usb/host/xhci.h | 8 +
> drivers/usb/misc/yurex.c | 1 +
> drivers/usb/serial/cp210x.c | 1 +
> drivers/usb/serial/ftdi_sio.c | 2 +
> drivers/usb/serial/ftdi_sio_ids.h | 4 +-
> drivers/usb/serial/mos7720.c | 4 +-
> drivers/usb/storage/realtek_cr.c | 13 +-
> drivers/vhost/net.c | 31 +--
> drivers/vhost/scsi.c | 15 +-
> drivers/vhost/vhost.c | 20 +-
> drivers/vhost/vhost.h | 6 +-
> drivers/w1/masters/ds2490.c | 6 +-
> drivers/xen/balloon.c | 16 +-
> fs/afs/fsclient.c | 6 +-
> fs/btrfs/compression.c | 18 ++
> fs/btrfs/compression.h | 1 +
> fs/btrfs/props.c | 5 +-
> fs/ceph/dir.c | 6 +-
> fs/cifs/cifsglob.h | 2 +
> fs/cifs/file.c | 30 ++-
> fs/cifs/inode.c | 4 +
> fs/cifs/misc.c | 25 ++-
> fs/cifs/smb2misc.c | 6 +-
> fs/cifs/smb2ops.c | 2 +
> fs/ext4/file.c | 2 +-
> fs/ext4/resize.c | 11 +-
> fs/lockd/host.c | 3 +-
> fs/proc/meminfo.c | 34 +---
> fs/proc/proc_sysctl.c | 7 +-
> fs/udf/truncate.c | 3 +
> fs/ufs/util.h | 2 +-
> include/linux/kprobes.h | 1 +
> include/linux/lockdep.h | 15 ++
> include/linux/mm.h | 1 +
> include/linux/siphash.h | 90 +++++++++
> include/linux/string.h | 3 +
> include/linux/usb.h | 2 -
> include/net/ip.h | 12 +-
> include/net/ipv6.h | 4 +-
> include/net/netfilter/nf_conntrack.h | 2 +
> include/net/netns/ipv4.h | 2 +
> include/net/sctp/checksum.h | 2 +-
> kernel/events/core.c | 2 +
> kernel/futex.c | 4 +
> kernel/sched/fair.c | 35 +++-
> kernel/trace/ftrace.c | 5 +-
> kernel/trace/ring_buffer.c | 2 +-
> lib/Kconfig.debug | 10 +
> lib/Makefile | 3 +-
> lib/siphash.c | 232 +++++++++++++++++++++++
> lib/string.c | 20 ++
> lib/test_siphash.c | 131 +++++++++++++
> mm/page_alloc.c | 43 +++++
> mm/vmstat.c | 5 -
> net/batman-adv/bridge_loop_avoidance.c | 16 +-
> net/batman-adv/translation-table.c | 32 +++-
> net/bridge/br_multicast.c | 4 +-
> net/bridge/br_netfilter.c | 3 +
> net/bridge/netfilter/ebtables.c | 3 +-
> net/core/net-sysfs.c | 6 +-
> net/dccp/feat.c | 7 +-
> net/dccp/ipv6.c | 4 +-
> net/ipv4/igmp.c | 4 +-
> net/ipv4/ip_output.c | 7 +-
> net/ipv4/ip_tunnel_core.c | 3 +-
> net/ipv4/ipmr.c | 7 +-
> net/ipv4/raw.c | 2 +-
> net/ipv4/route.c | 16 +-
> net/ipv4/xfrm4_mode_tunnel.c | 2 +-
> net/ipv4/xfrm4_policy.c | 60 ++++--
> net/ipv6/ip6_flowlabel.c | 24 ++-
> net/ipv6/ip6_output.c | 23 +--
> net/ipv6/ip6mr.c | 11 +-
> net/ipv6/output_core.c | 53 +++++-
> net/ipv6/tcp_ipv6.c | 8 +-
> net/ipv6/udp_offload.c | 6 +
> net/ipv6/xfrm6_tunnel.c | 4 +
> net/l2tp/l2tp_core.c | 10 +-
> net/mac80211/debugfs_netdev.c | 2 +-
> net/netfilter/ipvs/ip_vs_xmit.c | 5 +-
> net/netfilter/nf_conntrack_core.c | 36 ++++
> net/netfilter/nf_conntrack_netlink.c | 34 +++-
> net/packet/af_packet.c | 37 ++--
> net/rose/rose_loopback.c | 34 ++--
> net/sunrpc/cache.c | 3 +
> net/tipc/sysctl.c | 4 +-
> net/xfrm/xfrm_user.c | 2 +-
> security/device_cgroup.c | 2 +-
> sound/core/init.c | 18 +-
> sound/core/oss/pcm_oss.c | 43 +++--
> sound/core/pcm_native.c | 9 +-
> sound/core/rawmidi.c | 2 +
> sound/core/seq/oss/seq_oss_synth.c | 7 +-
> sound/core/seq/seq_clientmgr.c | 6 +-
> tools/lib/traceevent/event-parse.c | 2 +-
> tools/perf/tests/evsel-tp-sched.c | 1 +
> virt/kvm/kvm_main.c | 3 +
> 180 files changed, 1973 insertions(+), 565 deletions(-)
>
>Aditya Pakki (1):
> serial: max310x: Fix to avoid potential NULL pointer dereference
>
>Al Viro (1):
> ufs: fix braino in ufs_get_inode_gid() for solaris UFS flavour
>
>Alan Stern (4):
> USB: core: Fix unterminated string returned by usb_string()
> USB: core: Fix bug caused by duplicate interface PM usage counter
> USB: yurex: Fix protection fault after device removal
> USB: w1 ds2490: Fix bug caused by improper use of altsetting array
>
>Anand Jain (1):
> btrfs: prop: fix vanished compression property after failed set
>
>Andre Przywara (1):
> PCI: Add function 1 DMA alias quirk for Marvell 9170 SATA controller
>
>Andy Lutomirski (2):
> x86/asm/entry/64: Disentangle error_entry/exit gsbase/ebx/usermode code
> x86/entry/64: Really create an error-entry-from-usermode code path
>
>Arnd Bergmann (1):
> 3c515: fix integer overflow warning
>
>Aurelien Aptel (1):
> CIFS: keep FileInfo handle live during oplock break
>
>Aurelien Jarno (1):
> MIPS: scall64-o32: Fix indirect syscall number load
>
>Axel Lin (1):
> gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
>
>Ben Gardon (1):
> kvm: mmu: Fix overflow on kvm mmu page limit calculation
>
>Ben Hutchings (3):
> x86: cpufeatures: Renumber feature word 7
> Revert "inet: update the IP ID generation algorithm to higher standards."
> Linux 3.16.72
>
>Changbin Du (1):
> perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test()
>
>Chen Jie (1):
> futex: Ensure that futex address is aligned in handle_futex_death()
>
>Christophe Leroy (1):
> powerpc/vdso32: fix CLOCK_MONOTONIC on PPC64
>
>Colin Ian King (1):
> vxge: fix return of a free'd memblock on a failed dma mapping
>
>Dan Carpenter (2):
> staging: rtl8712: uninitialized memory in read_bbreg_hdl()
> xen: Prevent buffer overflow in privcmd ioctl
>
>David Howells (1):
> afs: Fix StoreData op marshalling
>
>Denis Efremov (4):
> floppy: fix div-by-zero in setup_format_params
> floppy: fix out-of-bounds read in next_valid_format
> floppy: fix invalid pointer dereference in drive_name
> floppy: fix out-of-bounds read in copy_buffer
>
>Dragos Bogdan (1):
> iio: ad_sigma_delta: select channel when reading register
>
>Eric Dumazet (7):
> tcp: do not use ipv6 header for ipv4 flow
> dccp: do not use ipv6 header for ipv4 flow
> net/rose: fix unbound loop in rose_loopback_timer()
> l2tp: use rcu_dereference_sk_user_data() in l2tp_udp_encap_recv()
> ipv6/flowlabel: wait rcu grace period before put_pid()
> l2ip: fix possible use-after-free
> inet: switch IP ID generator to siphash
>
>Erik Schmauss (1):
> ACPICA: Namespace: remove address node from global list after method termination
>
>Fabrice Gasnier (1):
> iio: core: fix a possible circular locking dependency
>
>Finn Thain (1):
> mac8390: Fix mmio access size probe
>
>Florian Westphal (2):
> netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
> netfilter: ctnetlink: don't use conntrack/expect object addresses as id
>
>Frank Sorenson (1):
> cifs: do not attempt cifs operation on smb2+ rename error
>
>Frederic Weisbecker (1):
> locking/lockdep: Add IRQs disabled/enabled assertion APIs: lockdep_assert_irqs_enabled()/disabled()
>
>Geert Uytterhoeven (1):
> net: mac8390: Use standard memcpy_{from,to}io()
>
>Georg Ottinger (1):
> iio: adc: at91: disable adc channel interrupt in timeout case
>
>George McCollister (1):
> USB: serial: ftdi_sio: add additional NovaTech products
>
>Grant Hernandez (1):
> Input: gtco - bounds check collection indent level
>
>Greg Kroah-Hartman (1):
> USB: serial: cp210x: add new device id
>
>Guenter Roeck (1):
> xsysace: Fix error handling in ace_setup
>
>Gustavo A. R. Silva (2):
> ALSA: rawmidi: Fix potential Spectre v1 vulnerability
> ALSA: seq: oss: Fix Spectre v1 vulnerability
>
>Hangbin Liu (1):
> team: fix possible recursive locking when add slaves
>
>Hannes Frederic Sowa (3):
> ipv4: hash net ptr into fragmentation bucket selection
> ipv4: ip_tunnel: use net namespace from rtable not socket
> ipv6: hash net ptr into fragmentation bucket selection
>
>Heiner Kallweit (1):
> net: phy: don't clear BMCR in genphy_soft_reset
>
>Hoan Nguyen An (1):
> serial: sh-sci: Fix setting SCSCR_TIE while transferring data
>
>Ian Abbott (2):
> staging: comedi: vmk80xx: Fix use of uninitialized semaphore
> staging: comedi: vmk80xx: Fix possible double-free of ->usb_rx_buf
>
>Igor Redko (1):
> mm/page_alloc.c: calculate 'available' memory in a separate function
>
>Ilya Dryomov (1):
> dm table: propagate BDI_CAP_STABLE_WRITES to fix sporadic checksum errors
>
>Jack Morgenstein (1):
> IB/mlx4: Fix race condition between catas error reset and aliasguid flows
>
>Jan Kara (1):
> udf: Fix crash on IO error during truncate
>
>Jann Horn (1):
> device_cgroup: fix RCU imbalance in error case
>
>Jason A. Donenfeld (1):
> siphash: add cryptographically secure PRF
>
>Jason Wang (4):
> vhost_net: introduce vhost_exceeds_weight()
> vhost: introduce vhost_exceeds_weight()
> vhost_net: fix possible infinite loop
> vhost: scsi: add weight support
>
>Jason Yan (1):
> scsi: libsas: fix a race condition when smp task timeout
>
>Jean-Francois Dagenais (1):
> iio: dac: mcp4725: add missing powerdown bits in store eeprom
>
>Jeff Layton (1):
> ceph: ensure d_name stability in ceph_dentry_hash()
>
>Jie Liu (1):
> tipc: set sysctl_tipc_rmem and named_timeout right range
>
>Jim Mattson (1):
> kvm: x86: IA32_ARCH_CAPABILITIES is always supported
>
>Joerg Roedel (1):
> iommu/amd: Set exclusion range correctly
>
>Johannes Berg (1):
> mac80211: don't attempt to rename ERR_PTR() debugfs dirs
>
>Johannes Thumshirn (1):
> btrfs: correctly validate compression type
>
>Johannes Weiner (1):
> proc: meminfo: estimate available memory more conservatively
>
>Josh Poimboeuf (3):
> x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations
> x86/speculation: Enable Spectre v1 swapgs mitigations
> x86/entry/64: Use JMP instead of JMPQ
>
>Juergen Gross (1):
> xen: let alloc_xenballooned_pages() fail if not enough memory free
>
>Jérôme Glisse (1):
> block: do not leak memory in bio_copy_user_iov()
>
>Kangjie Lu (2):
> tty: atmel_serial: fix a potential NULL pointer dereference
> tty: mxs-auart: fix a potential NULL pointer dereference
>
>Kohji Okuno (1):
> ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time
>
>Konstantin Khlebnikov (1):
> mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
>
>Lars-Peter Clausen (1):
> iio: Fix scan mask selection
>
>Leonard Pollak (1):
> Staging: iio: meter: fixed typo
>
>Lin Yi (1):
> USB: serial: mos7720: fix mos_parport refcount imbalance on error path
>
>Linus Torvalds (1):
> slip: make slhc_free() silently accept an error pointer
>
>Liu Jian (1):
> mtd: cfi: fix deadloop in cfi_cmdset_0002.c do_write_buffer
>
>Lu Baolu (1):
> iommu/vt-d: Check capability before disabling protected memory
>
>Lukas Czerner (2):
> ext4: fix data corruption caused by unaligned direct AIO
> ext4: add missing brelse() in add_new_gdb_meta_bg()
>
>Malte Leip (1):
> usb: usbip: fix isoc packet num validation in get_pipe
>
>Marco Felsch (1):
> ARM: dts: pfla02: increase phy reset duration
>
>Markus Elfring (1):
> iio: Use kmalloc_array() in iio_scan_mask_set()
>
>Masami Hiramatsu (3):
> x86/kprobes: Verify stack frame on kretprobe
> kprobes: Mark ftrace mcount handler functions nokprobe
> x86/kprobes: Avoid kretprobe recursion bug
>
>Mathias Nyman (1):
> xhci: Don't let USB3 ports stuck in polling state prevent suspend
>
>Max Filippov (1):
> xtensa: fix return_address
>
>Mel Gorman (1):
> sched/fair: Do not re-read ->h_load_next during hierarchical load calculation
>
>Michael Ellerman (1):
> powerpc/vdso64: Fix CLOCK_MONOTONIC inconsistencies across Y2038
>
>Michael Neuling (1):
> powerpc/tm: Fix oops on sigreturn on systems without TM
>
>Mike Snitzer (1):
> dm: disable DISCARD if the underlying storage no longer supports it
>
>NeilBrown (2):
> NFS: fix mount/umount race in nlmclnt.
> sunrpc: don't mark uninitialised items as VALID.
>
>Nick Desaulniers (1):
> lib/string.c: implement a basic bcmp
>
>Nikolay Aleksandrov (1):
> net: bridge: multicast: use rcu to access port list from br_multicast_start_querier
>
>Paolo Abeni (1):
> vhost_net: use packet weight for rx handler, too
>
>Peter Zijlstra (1):
> trace: Fix preempt_enable_no_resched() abuse
>
>Phil Auld (1):
> sched/fair: Limit sched_cfs_period_timer() loop to avoid hard lockup
>
>Rikard Falkeborn (1):
> tools lib traceevent: Fix missing equality check for strcmp
>
>Ronnie Sahlberg (1):
> cifs: fix handle leak in smb2_query_symlink()
>
>Sabrina Dubroca (1):
> ipv6: call ipv6_proxy_select_ident instead of ipv6_select_ident in udp6_ufo_fragment
>
>Samuel Thibault (1):
> staging: speakup_soft: Fix alternate speech with other synths
>
>Sean Christopherson (2):
> KVM: Reject device ioctls from processes other than the VM's creator
> KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
>
>Steffen Klassert (3):
> xfrm4: Fix header checks in _decode_session4.
> xfrm4: Reload skb header pointers after calling pskb_may_pull.
> xfrm4: Fix uninitialized memory read in _decode_session4
>
>Steffen Maier (2):
> scsi: zfcp: fix rport unblock if deleted SCSI devices on Scsi_Host
> scsi: zfcp: fix scsi_eh host reset with port_forced ERP for non-NPIV FCP devices
>
>Stephane Eranian (1):
> perf/core: Restore mmap record type correctly
>
>Su Yanjun (1):
> xfrm6_tunnel: Fix potential panic when unloading xfrm6_tunnel module
>
>Sven Eckelmann (3):
> batman-adv: Reduce claim hash refcnt only for removed entry
> batman-adv: Reduce tt_local hash refcnt only for removed entry
> batman-adv: Reduce tt_global hash refcnt only for removed entry
>
>Takashi Iwai (3):
> ALSA: pcm: Fix possible OOB access in PCM oss plugins
> ALSA: pcm: Don't suspend stream in unrecoverable PCM state
> ALSA: core: Fix card races between register and disconnect
>
>Thomas Gleixner (2):
> x86/speculation: Prevent deadlock on ssb_state::lock
> x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS
>
>Vijayakumar Durai (1):
> rt2x00: do not increment sequence number while re-transmitting
>
>Vlad Yasevich (4):
> ipv6: Select fragment id during UFO segmentation if not set.
> Revert "drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets"
> ipv6: Fix fragment id assignment on LE arches.
> ipv6: Make __ipv6_select_ident static
>
>Vladis Dronov (1):
> Bluetooth: hci_uart: check for missing tty operations
>
>Wanpeng Li (1):
> x86/entry/64: Fix context tracking state warning when load_gs_index fails
>
>Willem de Bruijn (3):
> ipv6: invert flowlabel sharing check in process and user mode
> packet: in recvmsg msg_name return at least sizeof sockaddr_ll
> packet: validate msg_namelen in send directly
>
>Xie XiuQi (1):
> sched/numa: Fix a possible divide-by-zero
>
>Xin Long (3):
> ipv6: check sk sk_type and protocol early in ip_mroute_set/getsockopt
> netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING
> sctp: get sctphdr by offset in sctp_compute_cksum
>
>YueHaibing (5):
> xfrm: policy: Fix out-of-bound array accesses in __xfrm_policy_unlink
> net-sysfs: call dev_hold if kobject_init_and_add success
> fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links
> dccp: Fix memleak in __feat_register_sp
> fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
>
>Zubin Mithra (1):
> ALSA: seq: Fix OOB-reads from strlcpy
>
>haibinzhang(张海斌) (1):
> vhost-net: set packet weight of tx polling to 2 * vq size
>
>--
>Ben Hutchings
>When in doubt, use brute force. - Ken Thompson
>
>
>diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
>index 67a21b2ef3e4..2fe0b85b693d 100644
>--- a/Documentation/kernel-parameters.txt
>+++ b/Documentation/kernel-parameters.txt
>@@ -1917,6 +1917,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
> improves system performance, but it may also
> expose users to several CPU vulnerabilities.
> Equivalent to: nopti [X86]
>+ nospectre_v1 [X86]
> nospectre_v2 [X86]
> spectre_v2_user=off [X86]
> spec_store_bypass_disable=off [X86]
>@@ -2215,6 +2216,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
> register save and restore. The kernel will only save
> legacy floating-point registers on task switch.
>
>+ nospectre_v1 [X86] Disable mitigations for Spectre Variant 1
>+ (bounds check bypass). With this option data leaks are
>+ possible in the system.
>+
> nospectre_v2 [X86] Disable all mitigations for the Spectre variant 2
> (indirect branch prediction) vulnerability. System may
> allow data leaks with this option, which is equivalent
>diff --git a/Documentation/siphash.txt b/Documentation/siphash.txt
>new file mode 100644
>index 000000000000..e8e6ddbbaab4
>--- /dev/null
>+++ b/Documentation/siphash.txt
>@@ -0,0 +1,100 @@
>+ SipHash - a short input PRF
>+-----------------------------------------------
>+Written by Jason A. Donenfeld <jason@...c4.com>
>+
>+SipHash is a cryptographically secure PRF -- a keyed hash function -- that
>+performs very well for short inputs, hence the name. It was designed by
>+cryptographers Daniel J. Bernstein and Jean-Philippe Aumasson. It is intended
>+as a replacement for some uses of: `jhash`, `md5_transform`, `sha_transform`,
>+and so forth.
>+
>+SipHash takes a secret key filled with randomly generated numbers and either
>+an input buffer or several input integers. It spits out an integer that is
>+indistinguishable from random. You may then use that integer as part of secure
>+sequence numbers, secure cookies, or mask it off for use in a hash table.
>+
>+1. Generating a key
>+
>+Keys should always be generated from a cryptographically secure source of
>+random numbers, either using get_random_bytes or get_random_once:
>+
>+siphash_key_t key;
>+get_random_bytes(&key, sizeof(key));
>+
>+If you're not deriving your key from here, you're doing it wrong.
>+
>+2. Using the functions
>+
>+There are two variants of the function, one that takes a list of integers, and
>+one that takes a buffer:
>+
>+u64 siphash(const void *data, size_t len, const siphash_key_t *key);
>+
>+And:
>+
>+u64 siphash_1u64(u64, const siphash_key_t *key);
>+u64 siphash_2u64(u64, u64, const siphash_key_t *key);
>+u64 siphash_3u64(u64, u64, u64, const siphash_key_t *key);
>+u64 siphash_4u64(u64, u64, u64, u64, const siphash_key_t *key);
>+u64 siphash_1u32(u32, const siphash_key_t *key);
>+u64 siphash_2u32(u32, u32, const siphash_key_t *key);
>+u64 siphash_3u32(u32, u32, u32, const siphash_key_t *key);
>+u64 siphash_4u32(u32, u32, u32, u32, const siphash_key_t *key);
>+
>+If you pass the generic siphash function something of a constant length, it
>+will constant fold at compile-time and automatically choose one of the
>+optimized functions.
>+
>+3. Hashtable key function usage:
>+
>+struct some_hashtable {
>+ DECLARE_HASHTABLE(hashtable, 8);
>+ siphash_key_t key;
>+};
>+
>+void init_hashtable(struct some_hashtable *table)
>+{
>+ get_random_bytes(&table->key, sizeof(table->key));
>+}
>+
>+static inline hlist_head *some_hashtable_bucket(struct some_hashtable *table, struct interesting_input *input)
>+{
>+ return &table->hashtable[siphash(input, sizeof(*input), &table->key) & (HASH_SIZE(table->hashtable) - 1)];
>+}
>+
>+You may then iterate like usual over the returned hash bucket.
>+
>+4. Security
>+
>+SipHash has a very high security margin, with its 128-bit key. So long as the
>+key is kept secret, it is impossible for an attacker to guess the outputs of
>+the function, even if being able to observe many outputs, since 2^128 outputs
>+is significant.
>+
>+Linux implements the "2-4" variant of SipHash.
>+
>+5. Struct-passing Pitfalls
>+
>+Often times the XuY functions will not be large enough, and instead you'll
>+want to pass a pre-filled struct to siphash. When doing this, it's important
>+to always ensure the struct has no padding holes. The easiest way to do this
>+is to simply arrange the members of the struct in descending order of size,
>+and to use offsetendof() instead of sizeof() for getting the size. For
>+performance reasons, if possible, it's probably a good thing to align the
>+struct to the right boundary. Here's an example:
>+
>+const struct {
>+ struct in6_addr saddr;
>+ u32 counter;
>+ u16 dport;
>+} __aligned(SIPHASH_ALIGNMENT) combined = {
>+ .saddr = *(struct in6_addr *)saddr,
>+ .counter = counter,
>+ .dport = dport
>+};
>+u64 h = siphash(&combined, offsetofend(typeof(combined), dport), &secret);
>+
>+6. Resources
>+
>+Read the SipHash paper if you're interested in learning more:
>+https://131002.net/siphash/siphash.pdf
>diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt
>index 1392b61d6ebe..3073ea800389 100644
>--- a/Documentation/usb/power-management.txt
>+++ b/Documentation/usb/power-management.txt
>@@ -345,11 +345,15 @@ autosuspend the interface's device. When the usage counter is = 0
> then the interface is considered to be idle, and the kernel may
> autosuspend the device.
>
>-Drivers need not be concerned about balancing changes to the usage
>-counter; the USB core will undo any remaining "get"s when a driver
>-is unbound from its interface. As a corollary, drivers must not call
>-any of the usb_autopm_* functions after their disconnect() routine has
>-returned.
>+Drivers must be careful to balance their overall changes to the usage
>+counter. Unbalanced "get"s will remain in effect when a driver is
>+unbound from its interface, preventing the device from going into
>+runtime suspend should the interface be bound to a driver again. On
>+the other hand, drivers are allowed to achieve this balance by calling
>+the usb_autopm_* functions even after their disconnect routine
>+has returned -- say from within a work-queue routine -- provided they
>+retain an active reference to the interface (via usb_get_intf and
>+usb_put_intf).
>
> Drivers using the async routines are responsible for their own
> synchronization and mutual exclusion.
>diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
>index e86da4377402..fcafeed97244 100644
>--- a/Documentation/virtual/kvm/api.txt
>+++ b/Documentation/virtual/kvm/api.txt
>@@ -13,7 +13,7 @@ of a virtual machine. The ioctls belong to three classes
>
> - VM ioctls: These query and set attributes that affect an entire virtual
> machine, for example memory layout. In addition a VM ioctl is used to
>- create virtual cpus (vcpus).
>+ create virtual cpus (vcpus) and devices.
>
> Only run VM ioctls from the same process (address space) that was used
> to create the VM.
>@@ -24,6 +24,11 @@ of a virtual machine. The ioctls belong to three classes
> Only run vcpu ioctls from the same thread that was used to create the
> vcpu.
>
>+ - device ioctls: These query and set attributes that control the operation
>+ of a single device.
>+
>+ device ioctls must be issued from the same process (address space) that
>+ was used to create the VM.
>
> 2. File descriptors
> -------------------
>@@ -32,10 +37,11 @@ The kvm API is centered around file descriptors. An initial
> open("/dev/kvm") obtains a handle to the kvm subsystem; this handle
> can be used to issue system ioctls. A KVM_CREATE_VM ioctl on this
> handle will create a VM file descriptor which can be used to issue VM
>-ioctls. A KVM_CREATE_VCPU ioctl on a VM fd will create a virtual cpu
>-and return a file descriptor pointing to it. Finally, ioctls on a vcpu
>-fd can be used to control the vcpu, including the important task of
>-actually running guest code.
>+ioctls. A KVM_CREATE_VCPU or KVM_CREATE_DEVICE ioctl on a VM fd will
>+create a virtual cpu or device and return a file descriptor pointing to
>+the new resource. Finally, ioctls on a vcpu or device fd can be used
>+to control the vcpu or device. For vcpus, this includes the important
>+task of actually running guest code.
>
> In general file descriptors can be migrated among processes by means
> of fork() and the SCM_RIGHTS facility of unix domain socket. These
>diff --git a/MAINTAINERS b/MAINTAINERS
>index b2a5243e9d0b..61dbb398b540 100644
>--- a/MAINTAINERS
>+++ b/MAINTAINERS
>@@ -8188,6 +8188,13 @@ F: arch/arm/mach-s3c24xx/mach-bast.c
> F: arch/arm/mach-s3c24xx/bast-ide.c
> F: arch/arm/mach-s3c24xx/bast-irq.c
>
>+SIPHASH PRF ROUTINES
>+M: Jason A. Donenfeld <Jason@...c4.com>
>+S: Maintained
>+F: lib/siphash.c
>+F: lib/test_siphash.c
>+F: include/linux/siphash.h
>+
> TI DAVINCI MACHINE SUPPORT
> M: Sekhar Nori <nsekhar@...com>
> M: Kevin Hilman <khilman@...prootsystems.com>
>diff --git a/Makefile b/Makefile
>index c2c6a3580e8a..e2d6e0b9f22d 100644
>--- a/Makefile
>+++ b/Makefile
>@@ -1,6 +1,6 @@
> VERSION = 3
> PATCHLEVEL = 16
>-SUBLEVEL = 71
>+SUBLEVEL = 72
> EXTRAVERSION =
> NAME = Museum of Fishiegoodies
>
>diff --git a/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
>index 50c7718cb84e..0214e1199a06 100644
>--- a/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
>+++ b/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
>@@ -302,6 +302,7 @@
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_enet>;
> phy-mode = "rgmii";
>+ phy-reset-duration = <10>; /* in msecs */
> phy-reset-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
> status = "disabled";
> };
>diff --git a/arch/arm/mach-imx/cpuidle-imx6q.c b/arch/arm/mach-imx/cpuidle-imx6q.c
>index 6bcae0479049..e338a6d23b77 100644
>--- a/arch/arm/mach-imx/cpuidle-imx6q.c
>+++ b/arch/arm/mach-imx/cpuidle-imx6q.c
>@@ -14,30 +14,23 @@
> #include "common.h"
> #include "cpuidle.h"
>
>-static atomic_t master = ATOMIC_INIT(0);
>-static DEFINE_SPINLOCK(master_lock);
>+static int num_idle_cpus = 0;
>+static DEFINE_SPINLOCK(cpuidle_lock);
>
> static int imx6q_enter_wait(struct cpuidle_device *dev,
> struct cpuidle_driver *drv, int index)
> {
>- if (atomic_inc_return(&master) == num_online_cpus()) {
>- /*
>- * With this lock, we prevent other cpu to exit and enter
>- * this function again and become the master.
>- */
>- if (!spin_trylock(&master_lock))
>- goto idle;
>+ spin_lock(&cpuidle_lock);
>+ if (++num_idle_cpus == num_online_cpus())
> imx6q_set_lpm(WAIT_UNCLOCKED);
>- cpu_do_idle();
>- imx6q_set_lpm(WAIT_CLOCKED);
>- spin_unlock(&master_lock);
>- goto done;
>- }
>+ spin_unlock(&cpuidle_lock);
>
>-idle:
> cpu_do_idle();
>-done:
>- atomic_dec(&master);
>+
>+ spin_lock(&cpuidle_lock);
>+ if (num_idle_cpus-- == num_online_cpus())
>+ imx6q_set_lpm(WAIT_CLOCKED);
>+ spin_unlock(&cpuidle_lock);
>
> return index;
> }
>diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
>index 37361502d63b..ff9987fd5fd0 100644
>--- a/arch/mips/kernel/scall64-o32.S
>+++ b/arch/mips/kernel/scall64-o32.S
>@@ -124,7 +124,7 @@ NESTED(handle_sys, PT_SIZE, sp)
> subu t1, v0, __NR_O32_Linux
> move a1, v0
> bnez t1, 1f /* __NR_syscall at offset 0 */
>- lw a1, PT_R4(sp) /* Arg1 for __NR_syscall case */
>+ ld a1, PT_R4(sp) /* Arg1 for __NR_syscall case */
> .set pop
>
> 1: jal syscall_trace_enter
>diff --git a/arch/powerpc/include/asm/vdso_datapage.h b/arch/powerpc/include/asm/vdso_datapage.h
>index b73a8199f161..1e0ee59c8276 100644
>--- a/arch/powerpc/include/asm/vdso_datapage.h
>+++ b/arch/powerpc/include/asm/vdso_datapage.h
>@@ -82,10 +82,10 @@ struct vdso_data {
> __u32 icache_block_size; /* L1 i-cache block size */
> __u32 dcache_log_block_size; /* L1 d-cache log block size */
> __u32 icache_log_block_size; /* L1 i-cache log block size */
>- __s32 wtom_clock_sec; /* Wall to monotonic clock */
>- __s32 wtom_clock_nsec;
>- struct timespec stamp_xtime; /* xtime as at tb_orig_stamp */
>- __u32 stamp_sec_fraction; /* fractional seconds of stamp_xtime */
>+ __u32 stamp_sec_fraction; /* fractional seconds of stamp_xtime */
>+ __s32 wtom_clock_nsec; /* Wall to monotonic clock nsec */
>+ __s64 wtom_clock_sec; /* Wall to monotonic clock sec */
>+ struct timespec stamp_xtime; /* xtime as at tb_orig_stamp */
> __u32 syscall_map_64[SYSCALL_MAP_SIZE]; /* map of syscalls */
> __u32 syscall_map_32[SYSCALL_MAP_SIZE]; /* map of syscalls */
> };
>diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
>index e7e8c4db2651..90d1d10eff05 100644
>--- a/arch/powerpc/kernel/signal_32.c
>+++ b/arch/powerpc/kernel/signal_32.c
>@@ -1274,6 +1274,9 @@ long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
> goto bad;
>
> if (MSR_TM_ACTIVE(msr_hi<<32)) {
>+ /* Trying to start TM on non TM system */
>+ if (!cpu_has_feature(CPU_FTR_TM))
>+ goto bad;
> /* We only recheckpoint on return if we're
> * transaction.
> */
>diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
>index 0bcae29336c0..5437dae4f12f 100644
>--- a/arch/powerpc/kernel/signal_64.c
>+++ b/arch/powerpc/kernel/signal_64.c
>@@ -702,6 +702,11 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
> if (MSR_TM_ACTIVE(msr)) {
> /* We recheckpoint on return. */
> struct ucontext __user *uc_transact;
>+
>+ /* Trying to start TM on non TM system */
>+ if (!cpu_has_feature(CPU_FTR_TM))
>+ goto badframe;
>+
> if (__get_user(uc_transact, &uc->uc_link))
> goto badframe;
> if (restore_tm_sigcontexts(regs, &uc->uc_mcontext,
>diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S
>index 6b2b69616e77..8bacb8721961 100644
>--- a/arch/powerpc/kernel/vdso32/gettimeofday.S
>+++ b/arch/powerpc/kernel/vdso32/gettimeofday.S
>@@ -98,7 +98,7 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
> * can be used, r7 contains NSEC_PER_SEC.
> */
>
>- lwz r5,WTOM_CLOCK_SEC(r9)
>+ lwz r5,(WTOM_CLOCK_SEC+LOPART)(r9)
> lwz r6,WTOM_CLOCK_NSEC(r9)
>
> /* We now have our offset in r5,r6. We create a fake dependency
>diff --git a/arch/powerpc/kernel/vdso64/gettimeofday.S b/arch/powerpc/kernel/vdso64/gettimeofday.S
>index 382021324883..6a6a8495bd55 100644
>--- a/arch/powerpc/kernel/vdso64/gettimeofday.S
>+++ b/arch/powerpc/kernel/vdso64/gettimeofday.S
>@@ -85,7 +85,7 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
> * At this point, r4,r5 contain our sec/nsec values.
> */
>
>- lwa r6,WTOM_CLOCK_SEC(r3)
>+ ld r6,WTOM_CLOCK_SEC(r3)
> lwa r9,WTOM_CLOCK_NSEC(r3)
>
> /* We now have our result in r6,r9. We create a fake dependency
>diff --git a/arch/x86/include/asm/calling.h b/arch/x86/include/asm/calling.h
>index cb4c73bfeb48..129e29721835 100644
>--- a/arch/x86/include/asm/calling.h
>+++ b/arch/x86/include/asm/calling.h
>@@ -47,6 +47,7 @@ For 32-bit we have the following conventions - kernel is built with
> */
>
> #include <asm/dwarf2.h>
>+#include <asm/cpufeatures.h>
>
> #ifdef CONFIG_X86_64
>
>@@ -195,6 +196,23 @@ For 32-bit we have the following conventions - kernel is built with
> .byte 0xf1
> .endm
>
>+/*
>+ * Mitigate Spectre v1 for conditional swapgs code paths.
>+ *
>+ * FENCE_SWAPGS_USER_ENTRY is used in the user entry swapgs code path, to
>+ * prevent a speculative swapgs when coming from kernel space.
>+ *
>+ * FENCE_SWAPGS_KERNEL_ENTRY is used in the kernel entry non-swapgs code path,
>+ * to prevent the swapgs from getting speculatively skipped when coming from
>+ * user space.
>+ */
>+.macro FENCE_SWAPGS_USER_ENTRY
>+ ALTERNATIVE "", "lfence", X86_FEATURE_FENCE_SWAPGS_USER
>+.endm
>+.macro FENCE_SWAPGS_KERNEL_ENTRY
>+ ALTERNATIVE "", "lfence", X86_FEATURE_FENCE_SWAPGS_KERNEL
>+.endm
>+
> #else /* CONFIG_X86_64 */
>
> /*
>diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
>index 99137cbe34b8..ba48ab887acf 100644
>--- a/arch/x86/include/asm/cpufeatures.h
>+++ b/arch/x86/include/asm/cpufeatures.h
>@@ -177,29 +177,33 @@
> #define X86_FEATURE_ARAT ( 7*32+ 1) /* Always Running APIC Timer */
> #define X86_FEATURE_CPB ( 7*32+ 2) /* AMD Core Performance Boost */
> #define X86_FEATURE_EPB ( 7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */
>-#define X86_FEATURE_XSAVEOPT ( 7*32+ 4) /* Optimized Xsave */
>+#define X86_FEATURE_INVPCID_SINGLE ( 7*32+4) /* Effectively INVPCID && CR4.PCIDE=1 */
> #define X86_FEATURE_PLN ( 7*32+ 5) /* Intel Power Limit Notification */
> #define X86_FEATURE_PTS ( 7*32+ 6) /* Intel Package Thermal Status */
> #define X86_FEATURE_DTHERM ( 7*32+ 7) /* Digital Thermal Sensor */
> #define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */
> #define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */
>-#define X86_FEATURE_INVPCID_SINGLE ( 7*32+10) /* Effectively INVPCID && CR4.PCIDE=1 */
>-#define X86_FEATURE_RSB_CTXSW ( 7*32+11) /* "" Fill RSB on context switches */
>-#define X86_FEATURE_USE_IBPB ( 7*32+12) /* "" Indirect Branch Prediction Barrier enabled */
>-#define X86_FEATURE_USE_IBRS_FW ( 7*32+13) /* "" Use IBRS during runtime firmware calls */
>-#define X86_FEATURE_SPEC_STORE_BYPASS_DISABLE ( 7*32+14) /* "" Disable Speculative Store Bypass. */
>-#define X86_FEATURE_LS_CFG_SSBD ( 7*32+15) /* "" AMD SSBD implementation */
>-#define X86_FEATURE_IBRS ( 7*32+16) /* Indirect Branch Restricted Speculation */
>-#define X86_FEATURE_IBPB ( 7*32+17) /* Indirect Branch Prediction Barrier */
>-#define X86_FEATURE_STIBP ( 7*32+18) /* Single Thread Indirect Branch Predictors */
>-#define X86_FEATURE_MSR_SPEC_CTRL ( 7*32+19) /* "" MSR SPEC_CTRL is implemented */
>-#define X86_FEATURE_SSBD ( 7*32+20) /* Speculative Store Bypass Disable */
>-#define X86_FEATURE_ZEN ( 7*32+21) /* "" CPU is AMD family 0x17 (Zen) */
>-#define X86_FEATURE_L1TF_PTEINV ( 7*32+22) /* "" L1TF workaround PTE inversion */
>-#define X86_FEATURE_IBRS_ENHANCED ( 7*32+23) /* Enhanced IBRS */
>-#define X86_FEATURE_RETPOLINE ( 7*32+29) /* "" Generic Retpoline mitigation for Spectre variant 2 */
>-#define X86_FEATURE_RETPOLINE_AMD ( 7*32+30) /* "" AMD Retpoline mitigation for Spectre variant 2 */
>-/* Because the ALTERNATIVE scheme is for members of the X86_FEATURE club... */
>+#define X86_FEATURE_FENCE_SWAPGS_USER ( 7*32+10) /* "" LFENCE in user entry SWAPGS path */
>+#define X86_FEATURE_FENCE_SWAPGS_KERNEL ( 7*32+11) /* "" LFENCE in kernel entry SWAPGS path */
>+#define X86_FEATURE_RETPOLINE ( 7*32+12) /* "" Generic Retpoline mitigation for Spectre variant 2 */
>+#define X86_FEATURE_RETPOLINE_AMD ( 7*32+13) /* "" AMD Retpoline mitigation for Spectre variant 2 */
>+
>+#define X86_FEATURE_XSAVEOPT ( 7*32+15) /* Optimized Xsave */
>+#define X86_FEATURE_MSR_SPEC_CTRL ( 7*32+16) /* "" MSR SPEC_CTRL is implemented */
>+#define X86_FEATURE_SSBD ( 7*32+17) /* Speculative Store Bypass Disable */
>+
>+#define X86_FEATURE_RSB_CTXSW ( 7*32+19) /* "" Fill RSB on context switches */
>+
>+#define X86_FEATURE_USE_IBPB ( 7*32+21) /* "" Indirect Branch Prediction Barrier enabled */
>+#define X86_FEATURE_USE_IBRS_FW ( 7*32+22) /* "" Use IBRS during runtime firmware calls */
>+#define X86_FEATURE_SPEC_STORE_BYPASS_DISABLE ( 7*32+23) /* "" Disable Speculative Store Bypass. */
>+#define X86_FEATURE_LS_CFG_SSBD ( 7*32+24) /* "" AMD SSBD implementation */
>+#define X86_FEATURE_IBRS ( 7*32+25) /* Indirect Branch Restricted Speculation */
>+#define X86_FEATURE_IBPB ( 7*32+26) /* Indirect Branch Prediction Barrier */
>+#define X86_FEATURE_STIBP ( 7*32+27) /* Single Thread Indirect Branch Predictors */
>+#define X86_FEATURE_ZEN ( 7*32+28) /* "" CPU is AMD family 0x17 (Zen) */
>+#define X86_FEATURE_L1TF_PTEINV ( 7*32+29) /* "" L1TF workaround PTE inversion */
>+#define X86_FEATURE_IBRS_ENHANCED ( 7*32+30) /* Enhanced IBRS */
> #define X86_FEATURE_KAISER ( 7*32+31) /* CONFIG_PAGE_TABLE_ISOLATION w/o nokaiser */
>
> /* Virtualization flags: Linux defined, word 8 */
>@@ -274,5 +278,6 @@
> #define X86_BUG_L1TF X86_BUG(9) /* CPU is affected by L1 Terminal Fault */
> #define X86_BUG_MDS X86_BUG(10) /* CPU is affected by Microarchitectural data sampling */
> #define X86_BUG_MSBDS_ONLY X86_BUG(11) /* CPU is only affected by the MSDBS variant of BUG_MDS */
>+#define X86_BUG_SWAPGS X86_BUG(12) /* CPU is affected by speculation through SWAPGS */
>
> #endif /* _ASM_X86_CPUFEATURES_H */
>diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
>index e9eae4fbdde2..92a9ba2595b3 100644
>--- a/arch/x86/include/asm/kvm_host.h
>+++ b/arch/x86/include/asm/kvm_host.h
>@@ -88,7 +88,7 @@ static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
> #define IOPL_SHIFT 12
>
> #define KVM_PERMILLE_MMU_PAGES 20
>-#define KVM_MIN_ALLOC_MMU_PAGES 64
>+#define KVM_MIN_ALLOC_MMU_PAGES 64UL
> #define KVM_MMU_HASH_SHIFT 10
> #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
> #define KVM_MIN_FREE_MMU_PAGES 5
>@@ -363,6 +363,7 @@ struct kvm_vcpu_arch {
> int mp_state;
> u64 ia32_misc_enable_msr;
> bool tpr_access_reporting;
>+ u64 arch_capabilities;
>
> /*
> * Paging state of the vcpu
>@@ -551,9 +552,9 @@ struct kvm_apic_map {
> };
>
> struct kvm_arch {
>- unsigned int n_used_mmu_pages;
>- unsigned int n_requested_mmu_pages;
>- unsigned int n_max_mmu_pages;
>+ unsigned long n_used_mmu_pages;
>+ unsigned long n_requested_mmu_pages;
>+ unsigned long n_max_mmu_pages;
> unsigned int indirect_shadow_pages;
> unsigned long mmu_valid_gen;
> struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
>@@ -809,8 +810,8 @@ void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
> gfn_t gfn_offset, unsigned long mask);
> void kvm_mmu_zap_all(struct kvm *kvm);
> void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm);
>-unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
>-void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
>+unsigned long kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
>+void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned long kvm_nr_mmu_pages);
>
> int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
>
>diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
>index da45f9fc1913..5876b28f9331 100644
>--- a/arch/x86/include/asm/xen/hypercall.h
>+++ b/arch/x86/include/asm/xen/hypercall.h
>@@ -215,6 +215,9 @@ privcmd_call(unsigned call,
> __HYPERCALL_DECLS;
> __HYPERCALL_5ARG(a1, a2, a3, a4, a5);
>
>+ if (call >= PAGE_SIZE / sizeof(hypercall_page[0]))
>+ return -EINVAL;
>+
> stac();
> asm volatile(CALL_NOSPEC
> : __HYPERCALL_5PARAM
>diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
>index e325029ff01a..f9e23ee19bcb 100644
>--- a/arch/x86/kernel/cpu/bugs.c
>+++ b/arch/x86/kernel/cpu/bugs.c
>@@ -30,6 +30,7 @@
> #include <asm/intel-family.h>
> #include <asm/e820.h>
>
>+static void __init spectre_v1_select_mitigation(void);
> static void __init spectre_v2_select_mitigation(void);
> static void __init ssb_select_mitigation(void);
> static void __init l1tf_select_mitigation(void);
>@@ -148,17 +149,11 @@ void __init check_bugs(void)
> if (boot_cpu_has(X86_FEATURE_STIBP))
> x86_spec_ctrl_mask |= SPEC_CTRL_STIBP;
>
>- /* Select the proper spectre mitigation before patching alternatives */
>+ /* Select the proper CPU mitigations before patching alternatives: */
>+ spectre_v1_select_mitigation();
> spectre_v2_select_mitigation();
>-
>- /*
>- * Select proper mitigation for any exposure to the Speculative Store
>- * Bypass vulnerability.
>- */
> ssb_select_mitigation();
>-
> l1tf_select_mitigation();
>-
> mds_select_mitigation();
>
> arch_smt_update();
>@@ -317,6 +312,98 @@ static int __init mds_cmdline(char *str)
> }
> early_param("mds", mds_cmdline);
>
>+#undef pr_fmt
>+#define pr_fmt(fmt) "Spectre V1 : " fmt
>+
>+enum spectre_v1_mitigation {
>+ SPECTRE_V1_MITIGATION_NONE,
>+ SPECTRE_V1_MITIGATION_AUTO,
>+};
>+
>+static enum spectre_v1_mitigation spectre_v1_mitigation =
>+ SPECTRE_V1_MITIGATION_AUTO;
>+
>+static const char * const spectre_v1_strings[] = {
>+ [SPECTRE_V1_MITIGATION_NONE] = "Vulnerable: __user pointer sanitization and usercopy barriers only; no swapgs barriers",
>+ [SPECTRE_V1_MITIGATION_AUTO] = "Mitigation: usercopy/swapgs barriers and __user pointer sanitization",
>+};
>+
>+/*
>+ * Does SMAP provide full mitigation against speculative kernel access to
>+ * userspace?
>+ */
>+static bool smap_works_speculatively(void)
>+{
>+ if (!boot_cpu_has(X86_FEATURE_SMAP))
>+ return false;
>+
>+ /*
>+ * On CPUs which are vulnerable to Meltdown, SMAP does not
>+ * prevent speculative access to user data in the L1 cache.
>+ * Consider SMAP to be non-functional as a mitigation on these
>+ * CPUs.
>+ */
>+ if (boot_cpu_has(X86_BUG_CPU_MELTDOWN))
>+ return false;
>+
>+ return true;
>+}
>+
>+static void __init spectre_v1_select_mitigation(void)
>+{
>+ if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V1) || cpu_mitigations_off()) {
>+ spectre_v1_mitigation = SPECTRE_V1_MITIGATION_NONE;
>+ return;
>+ }
>+
>+ if (spectre_v1_mitigation == SPECTRE_V1_MITIGATION_AUTO) {
>+ /*
>+ * With Spectre v1, a user can speculatively control either
>+ * path of a conditional swapgs with a user-controlled GS
>+ * value. The mitigation is to add lfences to both code paths.
>+ *
>+ * If FSGSBASE is enabled, the user can put a kernel address in
>+ * GS, in which case SMAP provides no protection.
>+ *
>+ * [ NOTE: Don't check for X86_FEATURE_FSGSBASE until the
>+ * FSGSBASE enablement patches have been merged. ]
>+ *
>+ * If FSGSBASE is disabled, the user can only put a user space
>+ * address in GS. That makes an attack harder, but still
>+ * possible if there's no SMAP protection.
>+ */
>+ if (!smap_works_speculatively()) {
>+ /*
>+ * Mitigation can be provided from SWAPGS itself or
>+ * PTI as the CR3 write in the Meltdown mitigation
>+ * is serializing.
>+ *
>+ * If neither is there, mitigate with an LFENCE to
>+ * stop speculation through swapgs.
>+ */
>+ if (boot_cpu_has_bug(X86_BUG_SWAPGS) &&
>+ !boot_cpu_has(X86_FEATURE_KAISER))
>+ setup_force_cpu_cap(X86_FEATURE_FENCE_SWAPGS_USER);
>+
>+ /*
>+ * Enable lfences in the kernel entry (non-swapgs)
>+ * paths, to prevent user entry from speculatively
>+ * skipping swapgs.
>+ */
>+ setup_force_cpu_cap(X86_FEATURE_FENCE_SWAPGS_KERNEL);
>+ }
>+ }
>+
>+ pr_info("%s\n", spectre_v1_strings[spectre_v1_mitigation]);
>+}
>+
>+static int __init nospectre_v1_cmdline(char *str)
>+{
>+ spectre_v1_mitigation = SPECTRE_V1_MITIGATION_NONE;
>+ return 0;
>+}
>+early_param("nospectre_v1", nospectre_v1_cmdline);
>+
> #undef pr_fmt
> #define pr_fmt(fmt) "Spectre V2 : " fmt
>
>@@ -1210,7 +1297,7 @@ static ssize_t cpu_show_common(struct device *dev, struct device_attribute *attr
> break;
>
> case X86_BUG_SPECTRE_V1:
>- return sprintf(buf, "Mitigation: __user pointer sanitization\n");
>+ return sprintf(buf, "%s\n", spectre_v1_strings[spectre_v1_mitigation]);
>
> case X86_BUG_SPECTRE_V2:
> return sprintf(buf, "%s%s%s%s%s%s\n", spectre_v2_strings[spectre_v2_enabled],
>diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
>index 9d4638d437de..337fcac8c8a0 100644
>--- a/arch/x86/kernel/cpu/common.c
>+++ b/arch/x86/kernel/cpu/common.c
>@@ -813,6 +813,7 @@ static void identify_cpu_without_cpuid(struct cpuinfo_x86 *c)
> #define NO_L1TF BIT(3)
> #define NO_MDS BIT(4)
> #define MSBDS_ONLY BIT(5)
>+#define NO_SWAPGS BIT(6)
>
> #define VULNWL(_vendor, _family, _model, _whitelist) \
> { X86_VENDOR_##_vendor, _family, _model, X86_FEATURE_ANY, _whitelist }
>@@ -836,29 +837,37 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = {
> VULNWL_INTEL(ATOM_BONNELL, NO_SPECULATION),
> VULNWL_INTEL(ATOM_BONNELL_MID, NO_SPECULATION),
>
>- VULNWL_INTEL(ATOM_SILVERMONT, NO_SSB | NO_L1TF | MSBDS_ONLY),
>- VULNWL_INTEL(ATOM_SILVERMONT_X, NO_SSB | NO_L1TF | MSBDS_ONLY),
>- VULNWL_INTEL(ATOM_SILVERMONT_MID, NO_SSB | NO_L1TF | MSBDS_ONLY),
>- VULNWL_INTEL(ATOM_AIRMONT, NO_SSB | NO_L1TF | MSBDS_ONLY),
>- VULNWL_INTEL(XEON_PHI_KNL, NO_SSB | NO_L1TF | MSBDS_ONLY),
>- VULNWL_INTEL(XEON_PHI_KNM, NO_SSB | NO_L1TF | MSBDS_ONLY),
>+ VULNWL_INTEL(ATOM_SILVERMONT, NO_SSB | NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>+ VULNWL_INTEL(ATOM_SILVERMONT_X, NO_SSB | NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>+ VULNWL_INTEL(ATOM_SILVERMONT_MID, NO_SSB | NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>+ VULNWL_INTEL(ATOM_AIRMONT, NO_SSB | NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>+ VULNWL_INTEL(XEON_PHI_KNL, NO_SSB | NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>+ VULNWL_INTEL(XEON_PHI_KNM, NO_SSB | NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>
> VULNWL_INTEL(CORE_YONAH, NO_SSB),
>
>- VULNWL_INTEL(ATOM_AIRMONT_MID, NO_L1TF | MSBDS_ONLY),
>+ VULNWL_INTEL(ATOM_AIRMONT_MID, NO_L1TF | MSBDS_ONLY | NO_SWAPGS),
>
>- VULNWL_INTEL(ATOM_GOLDMONT, NO_MDS | NO_L1TF),
>- VULNWL_INTEL(ATOM_GOLDMONT_X, NO_MDS | NO_L1TF),
>- VULNWL_INTEL(ATOM_GOLDMONT_PLUS, NO_MDS | NO_L1TF),
>+ VULNWL_INTEL(ATOM_GOLDMONT, NO_MDS | NO_L1TF | NO_SWAPGS),
>+ VULNWL_INTEL(ATOM_GOLDMONT_X, NO_MDS | NO_L1TF | NO_SWAPGS),
>+ VULNWL_INTEL(ATOM_GOLDMONT_PLUS, NO_MDS | NO_L1TF | NO_SWAPGS),
>+
>+ /*
>+ * Technically, swapgs isn't serializing on AMD (despite it previously
>+ * being documented as such in the APM). But according to AMD, %gs is
>+ * updated non-speculatively, and the issuing of %gs-relative memory
>+ * operands will be blocked until the %gs update completes, which is
>+ * good enough for our purposes.
>+ */
>
> /* AMD Family 0xf - 0x12 */
>- VULNWL_AMD(0x0f, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS),
>- VULNWL_AMD(0x10, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS),
>- VULNWL_AMD(0x11, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS),
>- VULNWL_AMD(0x12, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS),
>+ VULNWL_AMD(0x0f, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS),
>+ VULNWL_AMD(0x10, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS),
>+ VULNWL_AMD(0x11, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS),
>+ VULNWL_AMD(0x12, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS),
>
> /* FAMILY_ANY must be last, otherwise 0x0f - 0x12 matches won't work */
>- VULNWL_AMD(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS),
>+ VULNWL_AMD(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS | NO_SWAPGS),
> {}
> };
>
>@@ -895,6 +904,9 @@ static void __init cpu_set_bug_bits(struct cpuinfo_x86 *c)
> setup_force_cpu_bug(X86_BUG_MSBDS_ONLY);
> }
>
>+ if (!cpu_matches(NO_SWAPGS))
>+ setup_force_cpu_bug(X86_BUG_SWAPGS);
>+
> if (cpu_matches(NO_MELTDOWN))
> return;
>
>diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
>index 6e5feb342ee4..467069f38f21 100644
>--- a/arch/x86/kernel/entry_64.S
>+++ b/arch/x86/kernel/entry_64.S
>@@ -265,14 +265,19 @@ ENDPROC(native_usergs_sysret64)
> testl $3, CS-RBP(%rsi)
> je 1f
> SWAPGS
>+ FENCE_SWAPGS_USER_ENTRY
> SWITCH_KERNEL_CR3
>+ jmp 2f
>+1:
>+ FENCE_SWAPGS_KERNEL_ENTRY
>+2:
> /*
> * irq_count is used to check if a CPU is already on an interrupt stack
> * or not. While this is essentially redundant with preempt_count it is
> * a little cheaper to use a separate counter in the PDA (short of
> * moving irq_enter into assembly, which would be too much work)
> */
>-1: incl PER_CPU_VAR(irq_count)
>+ incl PER_CPU_VAR(irq_count)
> cmovzq PER_CPU_VAR(irq_stack_ptr),%rsp
> CFI_DEF_CFA_REGISTER rsi
>
>@@ -337,6 +342,13 @@ ENTRY(save_paranoid)
> movq %rax, %cr3
> 2:
> #endif
>+ /*
>+ * The above doesn't do an unconditional CR3 write, even in the PTI
>+ * case. So do an lfence to prevent GS speculation, regardless of
>+ * whether PTI is enabled.
>+ */
>+ FENCE_SWAPGS_KERNEL_ENTRY
>+
> ret
> CFI_ENDPROC
> END(save_paranoid)
>@@ -1445,10 +1457,27 @@ ENTRY(error_entry)
> */
> SWITCH_KERNEL_CR3
> testl $3,CS+8(%rsp)
>- je error_kernelspace
>-error_swapgs:
>+ jz .Lerror_kernelspace
>+
>+ /*
>+ * We entered from user mode or we're pretending to have entered
>+ * from user mode due to an IRET fault.
>+ */
> SWAPGS
>-error_sti:
>+ FENCE_SWAPGS_USER_ENTRY
>+
>+.Lerror_entry_from_usermode_after_swapgs:
>+ /*
>+ * We need to tell lockdep that IRQs are off. We can't do this until
>+ * we fix gsbase, and we should do it before enter_from_user_mode
>+ * (which can take locks).
>+ */
>+ TRACE_IRQS_OFF
>+ ret
>+
>+.Lerror_entry_done_lfence:
>+ FENCE_SWAPGS_KERNEL_ENTRY
>+.Lerror_entry_done:
> TRACE_IRQS_OFF
> ret
>
>@@ -1458,28 +1487,46 @@ ENTRY(error_entry)
> * truncated RIP for IRET exceptions returning to compat mode. Check
> * for these here too.
> */
>-error_kernelspace:
>+.Lerror_kernelspace:
> leaq native_irq_return_iret(%rip),%rcx
> cmpq %rcx,RIP+8(%rsp)
>- je error_bad_iret
>+ je .Lerror_bad_iret
> movl %ecx,%eax /* zero extend */
> cmpq %rax,RIP+8(%rsp)
>- je bstep_iret
>+ je .Lbstep_iret
> cmpq $gs_change,RIP+8(%rsp)
>- je error_swapgs
>- jmp error_sti
>+ jne .Lerror_entry_done_lfence
>+
>+ /*
>+ * hack: gs_change can fail with user gsbase. If this happens, fix up
>+ * gsbase and proceed. We'll fix up the exception and land in
>+ * gs_change's error handler with kernel gsbase.
>+ */
>+ SWAPGS
>+ FENCE_SWAPGS_USER_ENTRY
>+ jmp .Lerror_entry_done
>
>-bstep_iret:
>+.Lbstep_iret:
> /* Fix truncated RIP */
> movq %rcx,RIP+8(%rsp)
> /* fall through */
>
>-error_bad_iret:
>+.Lerror_bad_iret:
>+ /*
>+ * We came from an IRET to user mode, so we have user gsbase.
>+ * Switch to kernel gsbase:
>+ */
> SWAPGS
>+ FENCE_SWAPGS_USER_ENTRY
>+
>+ /*
>+ * Pretend that the exception came from user mode: set up pt_regs
>+ * as if we faulted immediately after IRET.
>+ */
> mov %rsp,%rdi
> call fixup_bad_iret
> mov %rax,%rsp
>- jmp error_sti
>+ jmp .Lerror_entry_from_usermode_after_swapgs
> CFI_ENDPROC
> END(error_entry)
>
>@@ -1579,6 +1626,7 @@ ENTRY(nmi)
> * to switch CR3 here.
> */
> cld
>+ FENCE_SWAPGS_USER_ENTRY
> movq %rsp, %rdx
> movq PER_CPU_VAR(kernel_stack), %rsp
> addq $KERNEL_STACK_OFFSET, %rsp
>@@ -1624,6 +1672,7 @@ ENTRY(nmi)
> movq %rax, %cr3
> 2:
> #endif
>+ FENCE_SWAPGS_KERNEL_ENTRY
> call do_nmi
>
> #ifdef CONFIG_PAGE_TABLE_ISOLATION
>diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
>index 608f18c62412..cb6657f35f41 100644
>--- a/arch/x86/kernel/kprobes/core.c
>+++ b/arch/x86/kernel/kprobes/core.c
>@@ -494,6 +494,7 @@ void arch_prepare_kretprobe(struct kretprobe_instance *ri, struct pt_regs *regs)
> unsigned long *sara = stack_addr(regs);
>
> ri->ret_addr = (kprobe_opcode_t *) *sara;
>+ ri->fp = sara;
>
> /* Replace the return addr with trampoline addr */
> *sara = (unsigned long) &kretprobe_trampoline;
>@@ -685,26 +686,48 @@ static void __used kretprobe_trampoline_holder(void)
> NOKPROBE_SYMBOL(kretprobe_trampoline_holder);
> NOKPROBE_SYMBOL(kretprobe_trampoline);
>
>+static struct kprobe kretprobe_kprobe = {
>+ .addr = (void *)kretprobe_trampoline,
>+};
>+
> /*
> * Called from kretprobe_trampoline
> */
> __visible __used void *trampoline_handler(struct pt_regs *regs)
> {
>+ struct kprobe_ctlblk *kcb;
> struct kretprobe_instance *ri = NULL;
> struct hlist_head *head, empty_rp;
> struct hlist_node *tmp;
> unsigned long flags, orig_ret_address = 0;
> unsigned long trampoline_address = (unsigned long)&kretprobe_trampoline;
> kprobe_opcode_t *correct_ret_addr = NULL;
>+ void *frame_pointer;
>+ bool skipped = false;
>+
>+ preempt_disable();
>+
>+ /*
>+ * Set a dummy kprobe for avoiding kretprobe recursion.
>+ * Since kretprobe never run in kprobe handler, kprobe must not
>+ * be running at this point.
>+ */
>+ kcb = get_kprobe_ctlblk();
>+ __this_cpu_write(current_kprobe, &kretprobe_kprobe);
>+ kcb->kprobe_status = KPROBE_HIT_ACTIVE;
>
> INIT_HLIST_HEAD(&empty_rp);
> kretprobe_hash_lock(current, &head, &flags);
> /* fixup registers */
> #ifdef CONFIG_X86_64
> regs->cs = __KERNEL_CS;
>+ /* On x86-64, we use pt_regs->sp for return address holder. */
>+ frame_pointer = ®s->sp;
> #else
> regs->cs = __KERNEL_CS | get_kernel_rpl();
> regs->gs = 0;
>+ /* On x86-32, we use pt_regs->flags for return address holder. */
>+ frame_pointer = ®s->flags;
> #endif
> regs->ip = trampoline_address;
> regs->orig_ax = ~0UL;
>@@ -726,8 +749,25 @@ __visible __used void *trampoline_handler(struct pt_regs *regs)
> if (ri->task != current)
> /* another task is sharing our hash bucket */
> continue;
>+ /*
>+ * Return probes must be pushed on this hash list correct
>+ * order (same as return order) so that it can be poped
>+ * correctly. However, if we find it is pushed it incorrect
>+ * order, this means we find a function which should not be
>+ * probed, because the wrong order entry is pushed on the
>+ * path of processing other kretprobe itself.
>+ */
>+ if (ri->fp != frame_pointer) {
>+ if (!skipped)
>+ pr_warn("kretprobe is stacked incorrectly. Trying to fixup.\n");
>+ skipped = true;
>+ continue;
>+ }
>
> orig_ret_address = (unsigned long)ri->ret_addr;
>+ if (skipped)
>+ pr_warn("%ps must be blacklisted because of incorrect kretprobe order\n",
>+ ri->rp->kp.addr);
>
> if (orig_ret_address != trampoline_address)
> /*
>@@ -745,14 +785,15 @@ __visible __used void *trampoline_handler(struct pt_regs *regs)
> if (ri->task != current)
> /* another task is sharing our hash bucket */
> continue;
>+ if (ri->fp != frame_pointer)
>+ continue;
>
> orig_ret_address = (unsigned long)ri->ret_addr;
> if (ri->rp && ri->rp->handler) {
> __this_cpu_write(current_kprobe, &ri->rp->kp);
>- get_kprobe_ctlblk()->kprobe_status = KPROBE_HIT_ACTIVE;
> ri->ret_addr = correct_ret_addr;
> ri->rp->handler(ri, regs);
>- __this_cpu_write(current_kprobe, NULL);
>+ __this_cpu_write(current_kprobe, &kretprobe_kprobe);
> }
>
> recycle_rp_inst(ri, &empty_rp);
>@@ -768,6 +809,9 @@ __visible __used void *trampoline_handler(struct pt_regs *regs)
>
> kretprobe_hash_unlock(current, &flags);
>
>+ __this_cpu_write(current_kprobe, NULL);
>+ preempt_enable();
>+
> hlist_for_each_entry_safe(ri, tmp, &empty_rp, hlist) {
> hlist_del(&ri->hlist);
> kfree(ri);
>diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
>index 074510b5ea77..feca78bf2a6b 100644
>--- a/arch/x86/kernel/process.c
>+++ b/arch/x86/kernel/process.c
>@@ -351,6 +351,8 @@ static __always_inline void __speculation_ctrl_update(unsigned long tifp,
> u64 msr = x86_spec_ctrl_base;
> bool updmsr = false;
>
>+ lockdep_assert_irqs_disabled();
>+
> /*
> * If TIF_SSBD is different, select the proper mitigation
> * method. Note that if SSBD mitigation is disabled or permanentely
>@@ -402,10 +404,12 @@ static unsigned long speculation_ctrl_update_tif(struct task_struct *tsk)
>
> void speculation_ctrl_update(unsigned long tif)
> {
>+ unsigned long flags;
>+
> /* Forced update. Make sure all relevant TIF flags are different */
>- preempt_disable();
>+ local_irq_save(flags);
> __speculation_ctrl_update(~tif, tif);
>- preempt_enable();
>+ local_irq_restore(flags);
> }
>
> /* Called from seccomp/prctl update */
>diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
>index 95cd58cdee99..6531ffcb174b 100644
>--- a/arch/x86/kvm/cpuid.c
>+++ b/arch/x86/kvm/cpuid.c
>@@ -395,6 +395,11 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
> entry->ebx |= F(TSC_ADJUST);
> entry->edx &= kvm_cpuid_7_0_edx_x86_features;
> cpuid_mask(&entry->edx, 10);
>+ /*
>+ * We emulate ARCH_CAPABILITIES in software even
>+ * if the host doesn't support it.
>+ */
>+ entry->edx |= F(ARCH_CAPABILITIES);
> } else {
> entry->ebx = 0;
> entry->edx = 0;
>diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
>index c81ccc0d8da0..886fb53b4604 100644
>--- a/arch/x86/kvm/mmu.c
>+++ b/arch/x86/kvm/mmu.c
>@@ -1492,7 +1492,7 @@ static int is_empty_shadow_page(u64 *spt)
> * aggregate version in order to make the slab shrinker
> * faster
> */
>-static inline void kvm_mod_used_mmu_pages(struct kvm *kvm, int nr)
>+static inline void kvm_mod_used_mmu_pages(struct kvm *kvm, unsigned long nr)
> {
> kvm->arch.n_used_mmu_pages += nr;
> percpu_counter_add(&kvm_total_used_mmu_pages, nr);
>@@ -2207,7 +2207,7 @@ static bool prepare_zap_oldest_mmu_page(struct kvm *kvm,
> * Changing the number of mmu pages allocated to the vm
> * Note: if goal_nr_mmu_pages is too small, you will get dead lock
> */
>-void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int goal_nr_mmu_pages)
>+void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned long goal_nr_mmu_pages)
> {
> LIST_HEAD(invalid_list);
>
>@@ -4505,10 +4505,10 @@ int kvm_mmu_module_init(void)
> /*
> * Caculate mmu pages needed for kvm.
> */
>-unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm)
>+unsigned long kvm_mmu_calculate_mmu_pages(struct kvm *kvm)
> {
>- unsigned int nr_mmu_pages;
>- unsigned int nr_pages = 0;
>+ unsigned long nr_mmu_pages;
>+ unsigned long nr_pages = 0;
> struct kvm_memslots *slots;
> struct kvm_memory_slot *memslot;
>
>@@ -4518,8 +4518,7 @@ unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm)
> nr_pages += memslot->npages;
>
> nr_mmu_pages = nr_pages * KVM_PERMILLE_MMU_PAGES / 1000;
>- nr_mmu_pages = max(nr_mmu_pages,
>- (unsigned int) KVM_MIN_ALLOC_MMU_PAGES);
>+ nr_mmu_pages = max(nr_mmu_pages, KVM_MIN_ALLOC_MMU_PAGES);
>
> return nr_mmu_pages;
> }
>diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
>index 58b2f51fdfdc..f3dc8f614512 100644
>--- a/arch/x86/kvm/mmu.h
>+++ b/arch/x86/kvm/mmu.h
>@@ -81,7 +81,7 @@ void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context,
> bool execonly);
> bool kvm_can_do_async_pf(struct kvm_vcpu *vcpu);
>
>-static inline unsigned int kvm_mmu_available_pages(struct kvm *kvm)
>+static inline unsigned long kvm_mmu_available_pages(struct kvm *kvm)
> {
> if (kvm->arch.n_max_mmu_pages > kvm->arch.n_used_mmu_pages)
> return kvm->arch.n_max_mmu_pages -
>diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
>index bd6b883f3075..00dd9ea13c22 100644
>--- a/arch/x86/kvm/vmx.c
>+++ b/arch/x86/kvm/vmx.c
>@@ -433,7 +433,6 @@ struct vcpu_vmx {
> u64 msr_guest_kernel_gs_base;
> #endif
>
>- u64 arch_capabilities;
> u64 spec_ctrl;
>
> u32 vm_entry_controls_shadow;
>@@ -2481,12 +2480,6 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
>
> msr_info->data = to_vmx(vcpu)->spec_ctrl;
> break;
>- case MSR_IA32_ARCH_CAPABILITIES:
>- if (!msr_info->host_initiated &&
>- !guest_cpuid_has_arch_capabilities(vcpu))
>- return 1;
>- msr_info->data = to_vmx(vcpu)->arch_capabilities;
>- break;
> case MSR_IA32_SYSENTER_CS:
> msr_info->data = vmcs_read32(GUEST_SYSENTER_CS);
> break;
>@@ -2636,11 +2629,6 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
> vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap, MSR_IA32_PRED_CMD,
> MSR_TYPE_W);
> break;
>- case MSR_IA32_ARCH_CAPABILITIES:
>- if (!msr_info->host_initiated)
>- return 1;
>- vmx->arch_capabilities = data;
>- break;
> case MSR_IA32_CR_PAT:
> if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) {
> if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data))
>@@ -4583,9 +4571,6 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
> ++vmx->nmsrs;
> }
>
>- if (boot_cpu_has(X86_FEATURE_ARCH_CAPABILITIES))
>- rdmsrl(MSR_IA32_ARCH_CAPABILITIES, vmx->arch_capabilities);
>-
> vm_exit_controls_init(vmx, vmcs_config.vmexit_ctrl);
>
> /* 22.2.1, 20.8.1 */
>diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
>index cab3ca9d3f03..2c0f1ea119d6 100644
>--- a/arch/x86/kvm/x86.c
>+++ b/arch/x86/kvm/x86.c
>@@ -2089,6 +2089,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
> case MSR_F15H_EX_CFG:
> break;
>
>+ case MSR_IA32_ARCH_CAPABILITIES:
>+ if (!msr_info->host_initiated)
>+ return 1;
>+ vcpu->arch.arch_capabilities = data;
>+ break;
> case MSR_EFER:
> return set_efer(vcpu, data);
> case MSR_K7_HWCR:
>@@ -2479,6 +2484,12 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
> case MSR_IA32_UCODE_REV:
> msr_info->data = 0x100000000ULL;
> break;
>+ case MSR_IA32_ARCH_CAPABILITIES:
>+ if (!msr_info->host_initiated &&
>+ !guest_cpuid_has_arch_capabilities(vcpu))
>+ return 1;
>+ msr_info->data = vcpu->arch.arch_capabilities;
>+ break;
> case MSR_MTRRcap:
> msr_info->data = 0x500 | KVM_NR_VAR_MTRR;
> break;
>@@ -3518,7 +3529,7 @@ static int kvm_vm_ioctl_set_identity_map_addr(struct kvm *kvm,
> }
>
> static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
>- u32 kvm_nr_mmu_pages)
>+ unsigned long kvm_nr_mmu_pages)
> {
> if (kvm_nr_mmu_pages < KVM_MIN_ALLOC_MMU_PAGES)
> return -EINVAL;
>@@ -3532,7 +3543,7 @@ static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
> return 0;
> }
>
>-static int kvm_vm_ioctl_get_nr_mmu_pages(struct kvm *kvm)
>+static unsigned long kvm_vm_ioctl_get_nr_mmu_pages(struct kvm *kvm)
> {
> return kvm->arch.n_max_mmu_pages;
> }
>@@ -6957,6 +6968,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
> {
> int r;
>
>+ if (boot_cpu_has(X86_FEATURE_ARCH_CAPABILITIES))
>+ rdmsrl(MSR_IA32_ARCH_CAPABILITIES,
>+ vcpu->arch.arch_capabilities);
> vcpu->arch.mtrr_state.have_fixed = 1;
> r = vcpu_load(vcpu);
> if (r)
>diff --git a/arch/xtensa/kernel/stacktrace.c b/arch/xtensa/kernel/stacktrace.c
>index 7d2c317bd98b..922525c0d25c 100644
>--- a/arch/xtensa/kernel/stacktrace.c
>+++ b/arch/xtensa/kernel/stacktrace.c
>@@ -107,10 +107,14 @@ static int return_address_cb(struct stackframe *frame, void *data)
> return 1;
> }
>
>+/*
>+ * level == 0 is for the return address from the caller of this function,
>+ * not from this function itself.
>+ */
> unsigned long return_address(unsigned level)
> {
> struct return_addr_data r = {
>- .skip = level + 1,
>+ .skip = level,
> };
> walk_stackframe(stack_pointer(NULL), return_address_cb, &r);
> return r.addr;
>diff --git a/block/bio.c b/block/bio.c
>index 4218dab2bb47..3163dac6735d 100644
>--- a/block/bio.c
>+++ b/block/bio.c
>@@ -1216,8 +1216,11 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
> }
> }
>
>- if (bio_add_pc_page(q, bio, page, bytes, offset) < bytes)
>+ if (bio_add_pc_page(q, bio, page, bytes, offset) < bytes) {
>+ if (!map_data)
>+ __free_page(page);
> break;
>+ }
>
> len -= bytes;
> offset = 0;
>diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c
>index f1ea8e56cd87..7abcfa6b055c 100644
>--- a/drivers/acpi/acpica/nsobject.c
>+++ b/drivers/acpi/acpica/nsobject.c
>@@ -222,6 +222,10 @@ void acpi_ns_detach_object(struct acpi_namespace_node *node)
> }
> }
>
>+ if (obj_desc->common.type == ACPI_TYPE_REGION) {
>+ acpi_ut_remove_address_range(obj_desc->region.space_id, node);
>+ }
>+
> /* Clear the Node entry in all cases */
>
> node->object = NULL;
>diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
>index df51673d6591..3999b8c6a09d 100644
>--- a/drivers/block/floppy.c
>+++ b/drivers/block/floppy.c
>@@ -2113,6 +2113,9 @@ static void setup_format_params(int track)
> raw_cmd->kernel_data = floppy_track_buffer;
> raw_cmd->length = 4 * F_SECT_PER_TRACK;
>
>+ if (!F_SECT_PER_TRACK)
>+ return;
>+
> /* allow for about 30ms for data transport per track */
> head_shift = (F_SECT_PER_TRACK + 5) / 6;
>
>@@ -3233,8 +3236,12 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
> int cnt;
>
> /* sanity checking for parameters. */
>- if (g->sect <= 0 ||
>- g->head <= 0 ||
>+ if ((int)g->sect <= 0 ||
>+ (int)g->head <= 0 ||
>+ /* check for overflow in max_sector */
>+ (int)(g->sect * g->head) <= 0 ||
>+ /* check for zero in F_SECT_PER_TRACK */
>+ (unsigned char)((g->sect << 2) >> FD_SIZECODE(g)) == 0 ||
> g->track <= 0 || g->track > UDP->tracks >> STRETCH(g) ||
> /* check if reserved bits are set */
> (g->stretch & ~(FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK)) != 0)
>@@ -3378,6 +3385,24 @@ static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
> return 0;
> }
>
>+static bool valid_floppy_drive_params(const short autodetect[8],
>+ int native_format)
>+{
>+ size_t floppy_type_size = ARRAY_SIZE(floppy_type);
>+ size_t i = 0;
>+
>+ for (i = 0; i < 8; ++i) {
>+ if (autodetect[i] < 0 ||
>+ autodetect[i] >= floppy_type_size)
>+ return false;
>+ }
>+
>+ if (native_format < 0 || native_format >= floppy_type_size)
>+ return false;
>+
>+ return true;
>+}
>+
> static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
> unsigned long param)
> {
>@@ -3504,6 +3529,9 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
> SUPBOUND(size, strlen((const char *)outparam) + 1);
> break;
> case FDSETDRVPRM:
>+ if (!valid_floppy_drive_params(inparam.dp.autodetect,
>+ inparam.dp.native_format))
>+ return -EINVAL;
> *UDP = inparam.dp;
> break;
> case FDGETDRVPRM:
>diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
>index ab3ea62e5dfc..f98a9207ec7e 100644
>--- a/drivers/block/xsysace.c
>+++ b/drivers/block/xsysace.c
>@@ -1062,6 +1062,8 @@ static int ace_setup(struct ace_device *ace)
> return 0;
>
> err_read:
>+ /* prevent double queue cleanup */
>+ ace->gd->queue = NULL;
> put_disk(ace->gd);
> err_alloc_disk:
> blk_cleanup_queue(ace->queue);
>diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c
>index 0bc8a6a6a148..353ed68db711 100644
>--- a/drivers/bluetooth/hci_ath.c
>+++ b/drivers/bluetooth/hci_ath.c
>@@ -112,6 +112,9 @@ static int ath_open(struct hci_uart *hu)
>
> BT_DBG("hu %p", hu);
>
>+ if (!hci_uart_has_flow_control(hu))
>+ return -EOPNOTSUPP;
>+
> ath = kzalloc(sizeof(*ath), GFP_KERNEL);
> if (!ath)
> return -ENOMEM;
>diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
>index e00f8f5b5c8e..9ad437053e22 100644
>--- a/drivers/bluetooth/hci_ldisc.c
>+++ b/drivers/bluetooth/hci_ldisc.c
>@@ -261,6 +261,15 @@ static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
> return 0;
> }
>
>+/* Check the underlying device or tty has flow control support */
>+bool hci_uart_has_flow_control(struct hci_uart *hu)
>+{
>+ if (hu->tty->driver->ops->tiocmget && hu->tty->driver->ops->tiocmset)
>+ return true;
>+
>+ return false;
>+}
>+
> /* ------ LDISC part ------ */
> /* hci_uart_tty_open
> *
>diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
>index 12df101ca942..58e0bb8c041b 100644
>--- a/drivers/bluetooth/hci_uart.h
>+++ b/drivers/bluetooth/hci_uart.h
>@@ -90,6 +90,7 @@ int hci_uart_register_proto(struct hci_uart_proto *p);
> int hci_uart_unregister_proto(struct hci_uart_proto *p);
> int hci_uart_tx_wakeup(struct hci_uart *hu);
> int hci_uart_init_ready(struct hci_uart *hu);
>+bool hci_uart_has_flow_control(struct hci_uart *hu);
>
> #ifdef CONFIG_BT_HCIUART_H4
> int h4_init(void);
>diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c
>index b2239d678d01..f2c092676e01 100644
>--- a/drivers/gpio/gpio-adnp.c
>+++ b/drivers/gpio/gpio-adnp.c
>@@ -140,8 +140,10 @@ static int adnp_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
> if (err < 0)
> goto out;
>
>- if (err & BIT(pos))
>- err = -EACCES;
>+ if (value & BIT(pos)) {
>+ err = -EPERM;
>+ goto out;
>+ }
>
> err = 0;
>
>diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
>index dbcea7941059..3837cbdaf100 100644
>--- a/drivers/iio/adc/ad_sigma_delta.c
>+++ b/drivers/iio/adc/ad_sigma_delta.c
>@@ -121,6 +121,7 @@ static int ad_sd_read_reg_raw(struct ad_sigma_delta *sigma_delta,
> if (sigma_delta->info->has_registers) {
> data[0] = reg << sigma_delta->info->addr_shift;
> data[0] |= sigma_delta->info->read_mask;
>+ data[0] |= sigma_delta->comm;
> spi_message_add_tail(&t[0], &m);
> }
> spi_message_add_tail(&t[1], &m);
>diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
>index 10d5ec213091..2f7ad2538cec 100644
>--- a/drivers/iio/adc/at91_adc.c
>+++ b/drivers/iio/adc/at91_adc.c
>@@ -702,23 +702,29 @@ static int at91_adc_read_raw(struct iio_dev *idev,
> ret = wait_event_interruptible_timeout(st->wq_data_avail,
> st->done,
> msecs_to_jiffies(1000));
>- if (ret == 0)
>- ret = -ETIMEDOUT;
>- if (ret < 0) {
>- mutex_unlock(&st->lock);
>- return ret;
>- }
>-
>- *val = st->last_value;
>
>+ /* Disable interrupts, regardless if adc conversion was
>+ * successful or not
>+ */
> at91_adc_writel(st, AT91_ADC_CHDR,
> AT91_ADC_CH(chan->channel));
> at91_adc_writel(st, AT91_ADC_IDR, BIT(chan->channel));
>
>- st->last_value = 0;
>- st->done = false;
>+ if (ret > 0) {
>+ /* a valid conversion took place */
>+ *val = st->last_value;
>+ st->last_value = 0;
>+ st->done = false;
>+ ret = IIO_VAL_INT;
>+ } else if (ret == 0) {
>+ /* conversion timeout */
>+ dev_err(&idev->dev, "ADC Channel %d timeout.\n",
>+ chan->channel);
>+ ret = -ETIMEDOUT;
>+ }
>+
> mutex_unlock(&st->lock);
>- return IIO_VAL_INT;
>+ return ret;
>
> case IIO_CHAN_INFO_SCALE:
> *val = st->vref_mv;
>diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
>index b4dde8315210..89f695a958e9 100644
>--- a/drivers/iio/dac/mcp4725.c
>+++ b/drivers/iio/dac/mcp4725.c
>@@ -86,6 +86,7 @@ static ssize_t mcp4725_store_eeprom(struct device *dev,
> return 0;
>
> inoutbuf[0] = 0x60; /* write EEPROM */
>+ inoutbuf[0] |= data->powerdown ? ((data->powerdown_mode + 1) << 1) : 0;
> inoutbuf[1] = data->dac_value >> 4;
> inoutbuf[2] = (data->dac_value & 0xf) << 4;
>
>diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
>index 7562531ebf0e..77b19ca8b763 100644
>--- a/drivers/iio/industrialio-buffer.c
>+++ b/drivers/iio/industrialio-buffer.c
>@@ -836,10 +836,8 @@ int iio_scan_mask_set(struct iio_dev *indio_dev,
> const unsigned long *mask;
> unsigned long *trialmask;
>
>- trialmask = kmalloc(sizeof(*trialmask)*
>- BITS_TO_LONGS(indio_dev->masklength),
>- GFP_KERNEL);
>-
>+ trialmask = kcalloc(BITS_TO_LONGS(indio_dev->masklength),
>+ sizeof(*trialmask), GFP_KERNEL);
> if (trialmask == NULL)
> return -ENOMEM;
> if (!indio_dev->masklength) {
>diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
>index 4d1b400ed260..5ea56edcdf42 100644
>--- a/drivers/iio/industrialio-core.c
>+++ b/drivers/iio/industrialio-core.c
>@@ -1195,12 +1195,12 @@ EXPORT_SYMBOL(iio_device_register);
> **/
> void iio_device_unregister(struct iio_dev *indio_dev)
> {
>- mutex_lock(&indio_dev->info_exist_lock);
>-
> device_del(&indio_dev->dev);
>
> if (indio_dev->chrdev.dev)
> cdev_del(&indio_dev->chrdev);
>+
>+ mutex_lock(&indio_dev->info_exist_lock);
> iio_device_unregister_debugfs(indio_dev);
>
> iio_disable_all_buffers(indio_dev);
>diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
>index 0eb141c41416..fb60229bf191 100644
>--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
>+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
>@@ -579,8 +579,8 @@ void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev)
> unsigned long flags;
>
> for (i = 0 ; i < dev->num_ports; i++) {
>- cancel_delayed_work(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work);
> det = &sriov->alias_guid.ports_guid[i];
>+ cancel_delayed_work_sync(&det->alias_guid_work);
> spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags);
> while (!list_empty(&det->cb_list)) {
> cb_ctx = list_entry(det->cb_list.next,
>diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c
>index fe1ab5067b5d..cf3af3a3297a 100644
>--- a/drivers/input/tablet/gtco.c
>+++ b/drivers/input/tablet/gtco.c
>@@ -78,6 +78,7 @@ Scott Hill shill@...ocalcomp.com
>
> /* Max size of a single report */
> #define REPORT_MAX_SIZE 10
>+#define MAX_COLLECTION_LEVELS 10
>
>
> /* Bitmask whether pen is in range */
>@@ -224,8 +225,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
> char maintype = 'x';
> char globtype[12];
> int indent = 0;
>- char indentstr[10] = "";
>-
>+ char indentstr[MAX_COLLECTION_LEVELS + 1] = { 0 };
>
> dev_dbg(ddev, "======>>>>>>PARSE<<<<<<======\n");
>
>@@ -351,6 +351,13 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
> case TAG_MAIN_COL_START:
> maintype = 'S';
>
>+ if (indent == MAX_COLLECTION_LEVELS) {
>+ dev_err(ddev, "Collection level %d would exceed limit of %d\n",
>+ indent + 1,
>+ MAX_COLLECTION_LEVELS);
>+ break;
>+ }
>+
> if (data == 0) {
> dev_dbg(ddev, "======>>>>>> Physical\n");
> strcpy(globtype, "Physical");
>@@ -370,8 +377,15 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
> break;
>
> case TAG_MAIN_COL_END:
>- dev_dbg(ddev, "<<<<<<======\n");
> maintype = 'E';
>+
>+ if (indent == 0) {
>+ dev_err(ddev, "Collection level already at zero\n");
>+ break;
>+ }
>+
>+ dev_dbg(ddev, "<<<<<<======\n");
>+
> indent--;
> for (x = 0; x < indent; x++)
> indentstr[x] = '-';
>diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
>index 48b726f4ad48..006f4f9a3170 100644
>--- a/drivers/iommu/amd_iommu_init.c
>+++ b/drivers/iommu/amd_iommu_init.c
>@@ -293,7 +293,7 @@ static void iommu_write_l2(struct amd_iommu *iommu, u8 address, u32 val)
> static void iommu_set_exclusion_range(struct amd_iommu *iommu)
> {
> u64 start = iommu->exclusion_start & PAGE_MASK;
>- u64 limit = (start + iommu->exclusion_length) & PAGE_MASK;
>+ u64 limit = (start + iommu->exclusion_length - 1) & PAGE_MASK;
> u64 entry;
>
> if (!iommu->exclusion_start)
>diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
>index b60eb1cca150..c2a44d2ca5b6 100644
>--- a/drivers/iommu/intel-iommu.c
>+++ b/drivers/iommu/intel-iommu.c
>@@ -1394,6 +1394,9 @@ static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
> u32 pmen;
> unsigned long flags;
>
>+ if (!cap_plmr(iommu->cap) && !cap_phmr(iommu->cap))
>+ return;
>+
> raw_spin_lock_irqsave(&iommu->register_lock, flags);
> pmen = readl(iommu->reg + DMAR_PMEN_REG);
> pmen &= ~DMA_PMEN_EPM;
>diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
>index f5f1837dfa5b..b010f9600d87 100644
>--- a/drivers/md/dm-table.c
>+++ b/drivers/md/dm-table.c
>@@ -1432,6 +1432,36 @@ static bool dm_table_supports_write_same(struct dm_table *t)
> return true;
> }
>
>+static int device_requires_stable_pages(struct dm_target *ti,
>+ struct dm_dev *dev, sector_t start,
>+ sector_t len, void *data)
>+{
>+ struct request_queue *q = bdev_get_queue(dev->bdev);
>+
>+ return q && bdi_cap_stable_pages_required(&q->backing_dev_info);
>+}
>+
>+/*
>+ * If any underlying device requires stable pages, a table must require
>+ * them as well. Only targets that support iterate_devices are considered:
>+ * don't want error, zero, etc to require stable pages.
>+ */
>+static bool dm_table_requires_stable_pages(struct dm_table *t)
>+{
>+ struct dm_target *ti;
>+ unsigned i;
>+
>+ for (i = 0; i < dm_table_get_num_targets(t); i++) {
>+ ti = dm_table_get_target(t, i);
>+
>+ if (ti->type->iterate_devices &&
>+ ti->type->iterate_devices(ti, device_requires_stable_pages, NULL))
>+ return true;
>+ }
>+
>+ return false;
>+}
>+
> void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
> struct queue_limits *limits)
> {
>@@ -1473,6 +1503,15 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
>
> dm_table_set_integrity(t);
>
>+ /*
>+ * Some devices don't use blk_integrity but still want stable pages
>+ * because they do their own checksumming.
>+ */
>+ if (dm_table_requires_stable_pages(t))
>+ q->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
>+ else
>+ q->backing_dev_info.capabilities &= ~BDI_CAP_STABLE_WRITES;
>+
> /*
> * Determine whether or not this queue's I/O timings contribute
> * to the entropy pool, Only request-based targets use this.
>diff --git a/drivers/md/dm.c b/drivers/md/dm.c
>index 043ad8d8d700..30ae713aecf8 100644
>--- a/drivers/md/dm.c
>+++ b/drivers/md/dm.c
>@@ -756,6 +756,15 @@ static void dec_pending(struct dm_io *io, int error)
> }
> }
>
>+static void disable_discard(struct mapped_device *md)
>+{
>+ struct queue_limits *limits = dm_get_queue_limits(md);
>+
>+ /* device doesn't really support DISCARD, disable it */
>+ limits->max_discard_sectors = 0;
>+ queue_flag_clear(QUEUE_FLAG_DISCARD, md->queue);
>+}
>+
> static void disable_write_same(struct mapped_device *md)
> {
> struct queue_limits *limits = dm_get_queue_limits(md);
>@@ -792,9 +801,14 @@ static void clone_endio(struct bio *bio, int error)
> }
> }
>
>- if (unlikely(r == -EREMOTEIO && (bio->bi_rw & REQ_WRITE_SAME) &&
>- !bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors))
>- disable_write_same(md);
>+ if (unlikely(r == -EREMOTEIO)) {
>+ if (bio->bi_rw & REQ_DISCARD &&
>+ !bdev_get_queue(bio->bi_bdev)->limits.max_discard_sectors)
>+ disable_discard(md);
>+ else if (bio->bi_rw & REQ_WRITE_SAME &&
>+ !bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors)
>+ disable_write_same(md);
>+ }
>
> free_tio(md, tio);
> dec_pending(io, error);
>@@ -996,9 +1010,14 @@ static void dm_done(struct request *clone, int error, bool mapped)
> r = rq_end_io(tio->ti, clone, error, &tio->info);
> }
>
>- if (unlikely(r == -EREMOTEIO && (clone->cmd_flags & REQ_WRITE_SAME) &&
>- !clone->q->limits.max_write_same_sectors))
>- disable_write_same(tio->md);
>+ if (unlikely(r == -EREMOTEIO)) {
>+ if (clone->cmd_flags & REQ_DISCARD &&
>+ !clone->q->limits.max_discard_sectors)
>+ disable_discard(tio->md);
>+ else if (clone->cmd_flags & REQ_WRITE_SAME &&
>+ !clone->q->limits.max_write_same_sectors)
>+ disable_write_same(tio->md);
>+ }
>
> if (r <= 0)
> /* The target wants to complete the I/O */
>diff --git a/drivers/media/usb/tlg2300/pd-common.h b/drivers/media/usb/tlg2300/pd-common.h
>index 9e23ad32d2fe..562a58886ca2 100644
>--- a/drivers/media/usb/tlg2300/pd-common.h
>+++ b/drivers/media/usb/tlg2300/pd-common.h
>@@ -257,7 +257,7 @@ void set_debug_mode(struct video_device *vfd, int debug_mode);
> #else
> #define in_hibernation(pd) (0)
> #endif
>-#define get_pm_count(p) (atomic_read(&(p)->interface->pm_usage_cnt))
>+#define get_pm_count(p) (atomic_read(&(p)->interface->dev.power.usage_count))
>
> #define log(a, ...) printk(KERN_DEBUG "\t[ %s : %.3d ] "a"\n", \
> __func__, __LINE__, ## __VA_ARGS__)
>diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
>index 92303daf44dc..40047a2f4696 100644
>--- a/drivers/mtd/chips/cfi_cmdset_0002.c
>+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
>@@ -1538,7 +1538,11 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
> continue;
> }
>
>- if (time_after(jiffies, timeo) && !chip_ready(map, adr))
>+ /*
>+ * We check "time_after" and "!chip_good" before checking "chip_good" to avoid
>+ * the failure due to scheduling.
>+ */
>+ if (time_after(jiffies, timeo) && !chip_good(map, adr, datum))
> break;
>
> if (chip_good(map, adr, datum)) {
>diff --git a/drivers/net/ethernet/3com/3c515.c b/drivers/net/ethernet/3com/3c515.c
>index 94c656f5a05d..d4552e2c7189 100644
>--- a/drivers/net/ethernet/3com/3c515.c
>+++ b/drivers/net/ethernet/3com/3c515.c
>@@ -1524,7 +1524,7 @@ static void update_stats(int ioaddr, struct net_device *dev)
> static void set_rx_mode(struct net_device *dev)
> {
> int ioaddr = dev->base_addr;
>- short new_mode;
>+ unsigned short new_mode;
>
> if (dev->flags & IFF_PROMISC) {
> if (corkscrew_debug > 3)
>diff --git a/drivers/net/ethernet/8390/mac8390.c b/drivers/net/ethernet/8390/mac8390.c
>index 90e825e8abfe..02beb18942d2 100644
>--- a/drivers/net/ethernet/8390/mac8390.c
>+++ b/drivers/net/ethernet/8390/mac8390.c
>@@ -153,11 +153,6 @@ static void dayna_block_input(struct net_device *dev, int count,
> static void dayna_block_output(struct net_device *dev, int count,
> const unsigned char *buf, int start_page);
>
>-#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
>-#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
>-
>-#define memcmp_withio(a, b, c) memcmp((a), (void *)(b), (c))
>-
> /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
> static void slow_sane_get_8390_hdr(struct net_device *dev,
> struct e8390_pkt_hdr *hdr, int ring_page);
>@@ -244,19 +239,26 @@ static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
>
> static enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
> {
>- unsigned long outdata = 0xA5A0B5B0;
>- unsigned long indata = 0x00000000;
>+ u32 outdata = 0xA5A0B5B0;
>+ u32 indata = 0;
>+
> /* Try writing 32 bits */
>- memcpy_toio(membase, &outdata, 4);
>- /* Now compare them */
>- if (memcmp_withio(&outdata, membase, 4) == 0)
>+ nubus_writel(outdata, membase);
>+ /* Now read it back */
>+ indata = nubus_readl(membase);
>+ if (outdata == indata)
> return ACCESS_32;
>+
>+ outdata = 0xC5C0D5D0;
>+ indata = 0;
>+
> /* Write 16 bit output */
> word_memcpy_tocard(membase, &outdata, 4);
> /* Now read it back */
> word_memcpy_fromcard(&indata, membase, 4);
> if (outdata == indata)
> return ACCESS_16;
>+
> return ACCESS_UNKNOWN;
> }
>
>@@ -742,7 +744,7 @@ static void sane_get_8390_hdr(struct net_device *dev,
> struct e8390_pkt_hdr *hdr, int ring_page)
> {
> unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
>- memcpy_fromio(hdr, dev->mem_start + hdr_start, 4);
>+ memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4);
> /* Fix endianness */
> hdr->count = swab16(hdr->count);
> }
>@@ -756,13 +758,16 @@ static void sane_block_input(struct net_device *dev, int count,
> if (xfer_start + count > ei_status.rmem_end) {
> /* We must wrap the input move. */
> int semi_count = ei_status.rmem_end - xfer_start;
>- memcpy_fromio(skb->data, dev->mem_start + xfer_base,
>+ memcpy_fromio(skb->data,
>+ (void __iomem *)dev->mem_start + xfer_base,
> semi_count);
> count -= semi_count;
>- memcpy_fromio(skb->data + semi_count, ei_status.rmem_start,
>- count);
>+ memcpy_fromio(skb->data + semi_count,
>+ (void __iomem *)ei_status.rmem_start, count);
> } else {
>- memcpy_fromio(skb->data, dev->mem_start + xfer_base, count);
>+ memcpy_fromio(skb->data,
>+ (void __iomem *)dev->mem_start + xfer_base,
>+ count);
> }
> }
>
>@@ -771,7 +776,7 @@ static void sane_block_output(struct net_device *dev, int count,
> {
> long shmem = (start_page - WD_START_PG)<<8;
>
>- memcpy_toio(dev->mem_start + shmem, buf, count);
>+ memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count);
> }
>
> /* dayna block input/output */
>diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c
>index 4332ebbd7162..39f4b38fd068 100644
>--- a/drivers/net/ethernet/neterion/vxge/vxge-config.c
>+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c
>@@ -2381,6 +2381,7 @@ static void *__vxge_hw_blockpool_malloc(struct __vxge_hw_device *devh, u32 size,
> vxge_os_dma_free(devh->pdev, memblock,
> &dma_object->acc_handle);
> status = VXGE_HW_ERR_OUT_OF_MEMORY;
>+ memblock = NULL;
> goto exit;
> }
>
>diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
>index 47eba38ae526..75cc676a3239 100644
>--- a/drivers/net/macvtap.c
>+++ b/drivers/net/macvtap.c
>@@ -16,7 +16,6 @@
> #include <linux/idr.h>
> #include <linux/fs.h>
>
>-#include <net/ipv6.h>
> #include <net/net_namespace.h>
> #include <net/rtnetlink.h>
> #include <net/sock.h>
>@@ -571,8 +570,6 @@ static int macvtap_skb_from_vnet_hdr(struct sk_buff *skb,
> break;
> case VIRTIO_NET_HDR_GSO_UDP:
> gso_type = SKB_GSO_UDP;
>- if (skb->protocol == htons(ETH_P_IPV6))
>- ipv6_proxy_select_ident(skb);
> break;
> default:
> return -EINVAL;
>diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
>index 7a6d2f8c5201..77fcb1bd81bc 100644
>--- a/drivers/net/phy/phy_device.c
>+++ b/drivers/net/phy/phy_device.c
>@@ -1072,7 +1072,10 @@ int genphy_soft_reset(struct phy_device *phydev)
> {
> int ret;
>
>- ret = phy_write(phydev, MII_BMCR, BMCR_RESET);
>+ ret = phy_read(phydev, MII_BMCR);
>+ if (ret < 0)
>+ return ret;
>+ ret = phy_write(phydev, MII_BMCR, ret | BMCR_RESET);
> if (ret < 0)
> return ret;
>
>diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
>index 5dd0fe1635b9..a97b20773508 100644
>--- a/drivers/net/ppp/pptp.c
>+++ b/drivers/net/ppp/pptp.c
>@@ -284,7 +284,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
> nf_reset(skb);
>
> skb->ip_summed = CHECKSUM_NONE;
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(sock_net(sk), skb, NULL);
> ip_send_check(iph);
>
> ip_local_out(skb);
>diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
>index b52eabc168a0..f8234b5439f5 100644
>--- a/drivers/net/slip/slhc.c
>+++ b/drivers/net/slip/slhc.c
>@@ -153,7 +153,7 @@ slhc_init(int rslots, int tslots)
> void
> slhc_free(struct slcompress *comp)
> {
>- if ( comp == NULLSLCOMPR )
>+ if ( IS_ERR_OR_NULL(comp) )
> return;
>
> if ( comp->tstate != NULLSLSTATE )
>diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
>index d6511041c766..8d408cd7c170 100644
>--- a/drivers/net/team/team.c
>+++ b/drivers/net/team/team.c
>@@ -1116,6 +1116,12 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
> return -EINVAL;
> }
>
>+ if (netdev_has_upper_dev(dev, port_dev)) {
>+ netdev_err(dev, "Device %s is already an upper device of the team interface\n",
>+ portname);
>+ return -EBUSY;
>+ }
>+
> if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
> vlan_uses_dev(dev)) {
> netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
>diff --git a/drivers/net/tun.c b/drivers/net/tun.c
>index 48ac45f26fa3..1bbcb278e6df 100644
>--- a/drivers/net/tun.c
>+++ b/drivers/net/tun.c
>@@ -65,7 +65,6 @@
> #include <linux/nsproxy.h>
> #include <linux/virtio_net.h>
> #include <linux/rcupdate.h>
>-#include <net/ipv6.h>
> #include <net/net_namespace.h>
> #include <net/netns/generic.h>
> #include <net/rtnetlink.h>
>@@ -1143,8 +1142,6 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
> break;
> }
>
>- skb_reset_network_header(skb);
>-
> if (gso.gso_type != VIRTIO_NET_HDR_GSO_NONE) {
> pr_debug("GSO!\n");
> switch (gso.gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
>@@ -1156,8 +1153,6 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
> break;
> case VIRTIO_NET_HDR_GSO_UDP:
> skb_shinfo(skb)->gso_type = SKB_GSO_UDP;
>- if (skb->protocol == htons(ETH_P_IPV6))
>- ipv6_proxy_select_ident(skb);
> break;
> default:
> tun->dev->stats.rx_frame_errors++;
>@@ -1187,6 +1182,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
> skb_shinfo(skb)->tx_flags |= SKBTX_SHARED_FRAG;
> }
>
>+ skb_reset_network_header(skb);
> skb_probe_transport_header(skb, 0);
>
> rxhash = skb_get_hash(skb);
>diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
>index d13f25cd70d5..91aebb03841e 100644
>--- a/drivers/net/wireless/rt2x00/rt2x00.h
>+++ b/drivers/net/wireless/rt2x00/rt2x00.h
>@@ -666,7 +666,6 @@ enum rt2x00_state_flags {
> CONFIG_CHANNEL_HT40,
> CONFIG_POWERSAVING,
> CONFIG_HT_DISABLED,
>- CONFIG_QOS_DISABLED,
>
> /*
> * Mark we currently are sequentially reading TX_STA_FIFO register
>diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
>index 004dff9b962d..e7c152dd0bef 100644
>--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
>+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
>@@ -682,18 +682,8 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
> rt2x00dev->intf_associated--;
>
> rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
>-
>- clear_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags);
> }
>
>- /*
>- * Check for access point which do not support 802.11e . We have to
>- * generate data frames sequence number in S/W for such AP, because
>- * of H/W bug.
>- */
>- if (changes & BSS_CHANGED_QOS && !bss_conf->qos)
>- set_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags);
>-
> /*
> * When the erp information has changed, we should perform
> * additional configuration steps. For all other changes we are done.
>diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
>index 22d49d575d3f..8705092a052e 100644
>--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
>+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
>@@ -201,15 +201,18 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev,
> if (!test_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags)) {
> /*
> * rt2800 has a H/W (or F/W) bug, device incorrectly increase
>- * seqno on retransmited data (non-QOS) frames. To workaround
>- * the problem let's generate seqno in software if QOS is
>- * disabled.
>+ * seqno on retransmitted data (non-QOS) and management frames.
>+ * To workaround the problem let's generate seqno in software.
>+ * Except for beacons which are transmitted periodically by H/W
>+ * hence hardware has to assign seqno for them.
> */
>- if (test_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags))
>- __clear_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
>- else
>+ if (ieee80211_is_beacon(hdr->frame_control)) {
>+ __set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
> /* H/W will generate sequence number */
> return;
>+ }
>+
>+ __clear_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
> }
>
> /*
>diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
>index f5d1f51101cf..57cc4e7d2bbc 100644
>--- a/drivers/pci/quirks.c
>+++ b/drivers/pci/quirks.c
>@@ -3514,6 +3514,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
> /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
> DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
> quirk_dma_func1_alias);
>+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
>+ quirk_dma_func1_alias);
> /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
> DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
> quirk_dma_func1_alias);
>diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
>index 21a6f6d76bbb..3a62c049696e 100644
>--- a/drivers/s390/scsi/zfcp_erp.c
>+++ b/drivers/s390/scsi/zfcp_erp.c
>@@ -652,6 +652,20 @@ static void zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action)
> add_timer(&erp_action->timer);
> }
>
>+void zfcp_erp_port_forced_reopen_all(struct zfcp_adapter *adapter,
>+ int clear, char *dbftag)
>+{
>+ unsigned long flags;
>+ struct zfcp_port *port;
>+
>+ write_lock_irqsave(&adapter->erp_lock, flags);
>+ read_lock(&adapter->port_list_lock);
>+ list_for_each_entry(port, &adapter->port_list, list)
>+ _zfcp_erp_port_forced_reopen(port, clear, dbftag);
>+ read_unlock(&adapter->port_list_lock);
>+ write_unlock_irqrestore(&adapter->erp_lock, flags);
>+}
>+
> static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter,
> int clear, char *id)
> {
>@@ -1313,6 +1327,9 @@ static void zfcp_erp_try_rport_unblock(struct zfcp_port *port)
> struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev);
> int lun_status;
>
>+ if (sdev->sdev_state == SDEV_DEL ||
>+ sdev->sdev_state == SDEV_CANCEL)
>+ continue;
> if (zsdev->port != port)
> continue;
> /* LUN under port of interest */
>diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
>index c5023d6811a8..cfe2a3b2d3b2 100644
>--- a/drivers/s390/scsi/zfcp_ext.h
>+++ b/drivers/s390/scsi/zfcp_ext.h
>@@ -68,6 +68,8 @@ extern void zfcp_erp_clear_port_status(struct zfcp_port *, u32);
> extern int zfcp_erp_port_reopen(struct zfcp_port *, int, char *);
> extern void zfcp_erp_port_shutdown(struct zfcp_port *, int, char *);
> extern void zfcp_erp_port_forced_reopen(struct zfcp_port *, int, char *);
>+extern void zfcp_erp_port_forced_reopen_all(struct zfcp_adapter *adapter,
>+ int clear, char *dbftag);
> extern void zfcp_erp_set_lun_status(struct scsi_device *, u32);
> extern void zfcp_erp_clear_lun_status(struct scsi_device *, u32);
> extern void zfcp_erp_lun_reopen(struct scsi_device *, int, char *);
>diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
>index f213786fe96c..9e9f0ad00bef 100644
>--- a/drivers/s390/scsi/zfcp_scsi.c
>+++ b/drivers/s390/scsi/zfcp_scsi.c
>@@ -347,6 +347,10 @@ static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
> struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
> int ret = SUCCESS, fc_ret;
>
>+ if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
>+ zfcp_erp_port_forced_reopen_all(adapter, 0, "schrh_p");
>+ zfcp_erp_wait(adapter);
>+ }
> zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
> zfcp_erp_wait(adapter);
> fc_ret = fc_block_scsi_eh(scpnt);
>diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
>index 7d5d66edae87..65826111d996 100644
>--- a/drivers/scsi/libsas/sas_expander.c
>+++ b/drivers/scsi/libsas/sas_expander.c
>@@ -47,17 +47,16 @@ static void smp_task_timedout(unsigned long _task)
> unsigned long flags;
>
> spin_lock_irqsave(&task->task_state_lock, flags);
>- if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
>+ if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
> task->task_state_flags |= SAS_TASK_STATE_ABORTED;
>+ complete(&task->slow_task->completion);
>+ }
> spin_unlock_irqrestore(&task->task_state_lock, flags);
>-
>- complete(&task->slow_task->completion);
> }
>
> static void smp_task_done(struct sas_task *task)
> {
>- if (!del_timer(&task->slow_task->timer))
>- return;
>+ del_timer(&task->slow_task->timer);
> complete(&task->slow_task->completion);
> }
>
>diff --git a/drivers/staging/comedi/drivers/vmk80xx.c b/drivers/staging/comedi/drivers/vmk80xx.c
>index 0adf3cffddb0..87b6e1aa107a 100644
>--- a/drivers/staging/comedi/drivers/vmk80xx.c
>+++ b/drivers/staging/comedi/drivers/vmk80xx.c
>@@ -757,10 +757,8 @@ static int vmk80xx_alloc_usb_buffers(struct comedi_device *dev)
>
> size = le16_to_cpu(devpriv->ep_tx->wMaxPacketSize);
> devpriv->usb_tx_buf = kzalloc(size, GFP_KERNEL);
>- if (!devpriv->usb_tx_buf) {
>- kfree(devpriv->usb_rx_buf);
>+ if (!devpriv->usb_tx_buf)
> return -ENOMEM;
>- }
>
> return 0;
> }
>@@ -872,6 +870,8 @@ static int vmk80xx_auto_attach(struct comedi_device *dev,
>
> devpriv->model = boardinfo->model;
>
>+ sema_init(&devpriv->limit_sem, 8);
>+
> ret = vmk80xx_find_usb_endpoints(dev);
> if (ret)
> return ret;
>@@ -880,8 +880,6 @@ static int vmk80xx_auto_attach(struct comedi_device *dev,
> if (ret)
> return ret;
>
>- sema_init(&devpriv->limit_sem, 8);
>-
> usb_set_intfdata(intf, devpriv);
>
> if (devpriv->model == VMK8061_MODEL) {
>diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c
>index bcfdb650c2c5..c318e263c1bb 100644
>--- a/drivers/staging/iio/meter/ade7854.c
>+++ b/drivers/staging/iio/meter/ade7854.c
>@@ -269,7 +269,7 @@ static IIO_DEV_ATTR_VPEAK(S_IWUSR | S_IRUGO,
> static IIO_DEV_ATTR_IPEAK(S_IWUSR | S_IRUGO,
> ade7854_read_32bit,
> ade7854_write_32bit,
>- ADE7854_VPEAK);
>+ ADE7854_IPEAK);
> static IIO_DEV_ATTR_APHCAL(S_IWUSR | S_IRUGO,
> ade7854_read_16bit,
> ade7854_write_16bit,
>diff --git a/drivers/staging/rtl8712/rtl8712_cmd.c b/drivers/staging/rtl8712/rtl8712_cmd.c
>index 8ca7d7e68dca..2a0225900d89 100644
>--- a/drivers/staging/rtl8712/rtl8712_cmd.c
>+++ b/drivers/staging/rtl8712/rtl8712_cmd.c
>@@ -155,19 +155,11 @@ static u8 write_macreg_hdl(struct _adapter *padapter, u8 *pbuf)
>
> static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
> {
>- u32 val;
>- void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
> struct readBB_parm *prdbbparm;
> struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
>
> prdbbparm = (struct readBB_parm *)pcmd->parmbuf;
>- if (pcmd->rsp && pcmd->rspsz > 0)
>- memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);
>- pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
>- if (pcmd_callback == NULL)
>- r8712_free_cmd_obj(pcmd);
>- else
>- pcmd_callback(padapter, pcmd);
>+ r8712_free_cmd_obj(pcmd);
> return H2C_SUCCESS;
> }
>
>diff --git a/drivers/staging/rtl8712/rtl8712_cmd.h b/drivers/staging/rtl8712/rtl8712_cmd.h
>index 039ab3e97172..efa2fc98907f 100644
>--- a/drivers/staging/rtl8712/rtl8712_cmd.h
>+++ b/drivers/staging/rtl8712/rtl8712_cmd.h
>@@ -152,7 +152,7 @@ enum rtl8712_h2c_cmd {
> static struct _cmd_callback cmd_callback[] = {
> {GEN_CMD_CODE(_Read_MACREG), NULL}, /*0*/
> {GEN_CMD_CODE(_Write_MACREG), NULL},
>- {GEN_CMD_CODE(_Read_BBREG), &r8712_getbbrfreg_cmdrsp_callback},
>+ {GEN_CMD_CODE(_Read_BBREG), NULL},
> {GEN_CMD_CODE(_Write_BBREG), NULL},
> {GEN_CMD_CODE(_Read_RFREG), &r8712_getbbrfreg_cmdrsp_callback},
> {GEN_CMD_CODE(_Write_RFREG), NULL}, /*5*/
>diff --git a/drivers/staging/speakup/speakup_soft.c b/drivers/staging/speakup/speakup_soft.c
>index 9ed726509261..c5bf6b1aa80e 100644
>--- a/drivers/staging/speakup/speakup_soft.c
>+++ b/drivers/staging/speakup/speakup_soft.c
>@@ -213,10 +213,13 @@ static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
> DEFINE_WAIT(wait);
>
> spin_lock_irqsave(&speakup_info.spinlock, flags);
>+ synth_soft.alive = 1;
> while (1) {
> prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE);
>- if (!synth_buffer_empty() || speakup_info.flushing)
>- break;
>+ if (synth_current() == &synth_soft) {
>+ if (!synth_buffer_empty() || speakup_info.flushing)
>+ break;
>+ }
> spin_unlock_irqrestore(&speakup_info.spinlock, flags);
> if (fp->f_flags & O_NONBLOCK) {
> finish_wait(&speakup_event, &wait);
>@@ -234,6 +237,8 @@ static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
> cp = buf;
> init = get_initstring();
> while (chars_sent < count) {
>+ if (synth_current() != &synth_soft)
>+ break;
> if (speakup_info.flushing) {
> speakup_info.flushing = 0;
> ch = '\x18';
>@@ -286,7 +291,8 @@ static unsigned int softsynth_poll(struct file *fp,
> poll_wait(fp, &speakup_event, wait);
>
> spin_lock_irqsave(&speakup_info.spinlock, flags);
>- if (!synth_buffer_empty() || speakup_info.flushing)
>+ if (synth_current() == &synth_soft &&
>+ (!synth_buffer_empty() || speakup_info.flushing))
> ret = POLLIN | POLLRDNORM;
> spin_unlock_irqrestore(&speakup_info.spinlock, flags);
> return ret;
>diff --git a/drivers/staging/speakup/spk_priv.h b/drivers/staging/speakup/spk_priv.h
>index 637ba6760ec0..b669021455dd 100644
>--- a/drivers/staging/speakup/spk_priv.h
>+++ b/drivers/staging/speakup/spk_priv.h
>@@ -72,6 +72,7 @@ extern int synth_request_region(u_long, u_long);
> extern int synth_release_region(u_long, u_long);
> extern int synth_add(struct spk_synth *in_synth);
> extern void synth_remove(struct spk_synth *in_synth);
>+struct spk_synth *synth_current(void);
>
> extern struct speakup_info_t speakup_info;
>
>diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c
>index 172cf62b1aaf..1219089af4b5 100644
>--- a/drivers/staging/speakup/synth.c
>+++ b/drivers/staging/speakup/synth.c
>@@ -475,4 +475,10 @@ void synth_remove(struct spk_synth *in_synth)
> }
> EXPORT_SYMBOL_GPL(synth_remove);
>
>+struct spk_synth *synth_current(void)
>+{
>+ return synth;
>+}
>+EXPORT_SYMBOL_GPL(synth_current);
>+
> short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC|B_SYM };
>diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/staging/usbip/stub_rx.c
>index 2ed1118d3d8b..7f10bc79a719 100644
>--- a/drivers/staging/usbip/stub_rx.c
>+++ b/drivers/staging/usbip/stub_rx.c
>@@ -375,16 +375,10 @@ static int get_pipe(struct stub_device *sdev, struct usbip_header *pdu)
> }
>
> if (usb_endpoint_xfer_isoc(epd)) {
>- /* validate packet size and number of packets */
>- unsigned int maxp, packets, bytes;
>-
>- maxp = usb_endpoint_maxp(epd);
>- maxp *= usb_endpoint_maxp_mult(epd);
>- bytes = pdu->u.cmd_submit.transfer_buffer_length;
>- packets = DIV_ROUND_UP(bytes, maxp);
>-
>+ /* validate number of packets */
> if (pdu->u.cmd_submit.number_of_packets < 0 ||
>- pdu->u.cmd_submit.number_of_packets > packets) {
>+ pdu->u.cmd_submit.number_of_packets >
>+ USBIP_MAX_ISO_PACKETS) {
> dev_err(&sdev->udev->dev,
> "CMD_SUBMIT: isoc invalid num packets %d\n",
> pdu->u.cmd_submit.number_of_packets);
>diff --git a/drivers/staging/usbip/usbip_common.h b/drivers/staging/usbip/usbip_common.h
>index 58787c49fb68..8b358911563b 100644
>--- a/drivers/staging/usbip/usbip_common.h
>+++ b/drivers/staging/usbip/usbip_common.h
>@@ -134,6 +134,13 @@ extern struct device_attribute dev_attr_usbip_debug;
> #define USBIP_DIR_OUT 0x00
> #define USBIP_DIR_IN 0x01
>
>+/*
>+ * Arbitrary limit for the maximum number of isochronous packets in an URB,
>+ * compare for example the uhci_submit_isochronous function in
>+ * drivers/usb/host/uhci-q.c
>+ */
>+#define USBIP_MAX_ISO_PACKETS 1024
>+
> /**
> * struct usbip_header_basic - data pertinent to every request
> * @command: the usbip request type
>diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
>index bc1c68c926bd..d8676716467b 100644
>--- a/drivers/tty/serial/atmel_serial.c
>+++ b/drivers/tty/serial/atmel_serial.c
>@@ -1045,6 +1045,10 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
> sg_dma_len(&atmel_port->sg_rx)/2,
> DMA_DEV_TO_MEM,
> DMA_PREP_INTERRUPT);
>+ if (!desc) {
>+ dev_err(port->dev, "Preparing DMA cyclic failed\n");
>+ goto chan_err;
>+ }
> desc->callback = atmel_complete_rx_dma;
> desc->callback_param = port;
> atmel_port->desc_rx = desc;
>diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
>index ba285cd45b59..8ccab7cf437c 100644
>--- a/drivers/tty/serial/max310x.c
>+++ b/drivers/tty/serial/max310x.c
>@@ -1324,6 +1324,8 @@ static int max310x_spi_probe(struct spi_device *spi)
> if (spi->dev.of_node) {
> const struct of_device_id *of_id =
> of_match_device(max310x_dt_ids, &spi->dev);
>+ if (!of_id)
>+ return -ENODEV;
>
> devtype = (struct max310x_devtype *)of_id->data;
> } else {
>diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
>index 8f6d6b5a2eeb..acacce37ec66 100644
>--- a/drivers/tty/serial/mxs-auart.c
>+++ b/drivers/tty/serial/mxs-auart.c
>@@ -1075,6 +1075,10 @@ static int mxs_auart_probe(struct platform_device *pdev)
>
> s->port.mapbase = r->start;
> s->port.membase = ioremap(r->start, resource_size(r));
>+ if (!s->port.membase) {
>+ ret = -ENOMEM;
>+ goto out_free_clk;
>+ }
> s->port.ops = &mxs_auart_ops;
> s->port.iotype = UPIO_MEM;
> s->port.fifosize = MXS_AUART_FIFO_SIZE;
>diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
>index e2224213111c..0dc1d1ac4a9a 100644
>--- a/drivers/tty/serial/sh-sci.c
>+++ b/drivers/tty/serial/sh-sci.c
>@@ -633,19 +633,9 @@ static void sci_transmit_chars(struct uart_port *port)
>
> if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
> uart_write_wakeup(port);
>- if (uart_circ_empty(xmit)) {
>+ if (uart_circ_empty(xmit))
> sci_stop_tx(port);
>- } else {
>- ctrl = serial_port_in(port, SCSCR);
>-
>- if (port->type != PORT_SCI) {
>- serial_port_in(port, SCxSR); /* Dummy read */
>- serial_port_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
>- }
>
>- ctrl |= SCSCR_TIE;
>- serial_port_out(port, SCSCR, ctrl);
>- }
> }
>
> /* On SH3, SCIF may read end-of-break as a space->mark char */
>diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
>index d002c23af6f4..71dfbff5839d 100644
>--- a/drivers/usb/core/driver.c
>+++ b/drivers/usb/core/driver.c
>@@ -483,11 +483,6 @@ static int usb_unbind_interface(struct device *dev)
> pm_runtime_disable(dev);
> pm_runtime_set_suspended(dev);
>
>- /* Undo any residual pm_autopm_get_interface_* calls */
>- for (r = atomic_read(&intf->pm_usage_cnt); r > 0; --r)
>- usb_autopm_put_interface_no_suspend(intf);
>- atomic_set(&intf->pm_usage_cnt, 0);
>-
> if (!error)
> usb_autosuspend_device(udev);
>
>@@ -1638,7 +1633,6 @@ void usb_autopm_put_interface(struct usb_interface *intf)
> int status;
>
> usb_mark_last_busy(udev);
>- atomic_dec(&intf->pm_usage_cnt);
> status = pm_runtime_put_sync(&intf->dev);
> dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
> __func__, atomic_read(&intf->dev.power.usage_count),
>@@ -1667,7 +1661,6 @@ void usb_autopm_put_interface_async(struct usb_interface *intf)
> int status;
>
> usb_mark_last_busy(udev);
>- atomic_dec(&intf->pm_usage_cnt);
> status = pm_runtime_put(&intf->dev);
> dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
> __func__, atomic_read(&intf->dev.power.usage_count),
>@@ -1689,7 +1682,6 @@ void usb_autopm_put_interface_no_suspend(struct usb_interface *intf)
> struct usb_device *udev = interface_to_usbdev(intf);
>
> usb_mark_last_busy(udev);
>- atomic_dec(&intf->pm_usage_cnt);
> pm_runtime_put_noidle(&intf->dev);
> }
> EXPORT_SYMBOL_GPL(usb_autopm_put_interface_no_suspend);
>@@ -1720,8 +1712,6 @@ int usb_autopm_get_interface(struct usb_interface *intf)
> status = pm_runtime_get_sync(&intf->dev);
> if (status < 0)
> pm_runtime_put_sync(&intf->dev);
>- else
>- atomic_inc(&intf->pm_usage_cnt);
> dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
> __func__, atomic_read(&intf->dev.power.usage_count),
> status);
>@@ -1755,8 +1745,6 @@ int usb_autopm_get_interface_async(struct usb_interface *intf)
> status = pm_runtime_get(&intf->dev);
> if (status < 0 && status != -EINPROGRESS)
> pm_runtime_put_noidle(&intf->dev);
>- else
>- atomic_inc(&intf->pm_usage_cnt);
> dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
> __func__, atomic_read(&intf->dev.power.usage_count),
> status);
>@@ -1780,7 +1768,6 @@ void usb_autopm_get_interface_no_resume(struct usb_interface *intf)
> struct usb_device *udev = interface_to_usbdev(intf);
>
> usb_mark_last_busy(udev);
>- atomic_inc(&intf->pm_usage_cnt);
> pm_runtime_get_noresume(&intf->dev);
> }
> EXPORT_SYMBOL_GPL(usb_autopm_get_interface_no_resume);
>diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
>index 6af648c307b7..f7019c7e9bc5 100644
>--- a/drivers/usb/core/message.c
>+++ b/drivers/usb/core/message.c
>@@ -822,9 +822,11 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
>
> if (dev->state == USB_STATE_SUSPENDED)
> return -EHOSTUNREACH;
>- if (size <= 0 || !buf || !index)
>+ if (size <= 0 || !buf)
> return -EINVAL;
> buf[0] = 0;
>+ if (index <= 0 || index >= 256)
>+ return -EINVAL;
> tbuf = kmalloc(256, GFP_NOIO);
> if (!tbuf)
> return -ENOMEM;
>diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
>index fd697bba07ff..dc3270e48dfb 100644
>--- a/drivers/usb/host/xhci-hub.c
>+++ b/drivers/usb/host/xhci-hub.c
>@@ -1199,20 +1199,25 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
> port_index = max_ports;
> while (port_index--) {
> u32 t1, t2;
>-
>+ int retries = 10;
>+retry:
> t1 = readl(port_array[port_index]);
> t2 = xhci_port_state_to_neutral(t1);
> portsc_buf[port_index] = 0;
>
>- /* Bail out if a USB3 port has a new device in link training */
>- if ((hcd->speed >= HCD_USB3) &&
>+ /*
>+ * Give a USB3 port in link training time to finish, but don't
>+ * prevent suspend as port might be stuck
>+ */
>+ if ((hcd->speed >= HCD_USB3) && retries-- &&
> (t1 & PORT_PLS_MASK) == XDEV_POLLING) {
>- bus_state->bus_suspended = 0;
> spin_unlock_irqrestore(&xhci->lock, flags);
>- xhci_dbg(xhci, "Bus suspend bailout, port in polling\n");
>- return -EBUSY;
>+ msleep(XHCI_PORT_POLLING_LFPS_TIME);
>+ spin_lock_irqsave(&xhci->lock, flags);
>+ xhci_dbg(xhci, "port %d polling in bus suspend, waiting\n",
>+ port_index);
>+ goto retry;
> }
>-
> /* suspend ports in U0, or bail out for new connect changes */
> if ((t1 & PORT_PE) && (t1 & PORT_PLS_MASK) == XDEV_U0) {
> if ((t1 & PORT_CSC) && wake_enabled) {
>diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
>index feb702516470..bd191fbfdf40 100644
>--- a/drivers/usb/host/xhci.h
>+++ b/drivers/usb/host/xhci.h
>@@ -413,6 +413,14 @@ struct xhci_op_regs {
> */
> #define XHCI_DEFAULT_BESL 4
>
>+/*
>+ * USB3 specification define a 360ms tPollingLFPSTiemout for USB3 ports
>+ * to complete link training. usually link trainig completes much faster
>+ * so check status 10 times with 36ms sleep in places we need to wait for
>+ * polling to complete.
>+ */
>+#define XHCI_PORT_POLLING_LFPS_TIME 36
>+
> /**
> * struct xhci_intr_reg - Interrupt Register Set
> * @irq_pending: IMAN - Interrupt Management Register. Used to enable
>diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c
>index 3114c8d061e9..1c9d08157708 100644
>--- a/drivers/usb/misc/yurex.c
>+++ b/drivers/usb/misc/yurex.c
>@@ -332,6 +332,7 @@ static void yurex_disconnect(struct usb_interface *interface)
> usb_deregister_dev(interface, &yurex_class);
>
> /* prevent more I/O from starting */
>+ usb_poison_urb(dev->urb);
> mutex_lock(&dev->io_mutex);
> dev->interface = NULL;
> mutex_unlock(&dev->io_mutex);
>diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
>index b60dac48587c..3e22dd294879 100644
>--- a/drivers/usb/serial/cp210x.c
>+++ b/drivers/usb/serial/cp210x.c
>@@ -76,6 +76,7 @@ static const struct usb_device_id id_table[] = {
> { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */
> { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */
> { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */
>+ { USB_DEVICE(0x10C4, 0x8056) }, /* Lorenz Messtechnik devices */
> { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
> { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */
> { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
>diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
>index aa2bec8687fd..3f89153bc122 100644
>--- a/drivers/usb/serial/ftdi_sio.c
>+++ b/drivers/usb/serial/ftdi_sio.c
>@@ -617,6 +617,8 @@ static const struct usb_device_id id_table_combined[] = {
> .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
> { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID),
> .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
>+ { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLX_PLUS_PID) },
>+ { USB_DEVICE(FTDI_VID, FTDI_NT_ORION_IO_PID) },
> { USB_DEVICE(FTDI_VID, FTDI_SYNAPSE_SS200_PID) },
> { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX_PID) },
> { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2_PID) },
>diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
>index ecc2424eb8e0..5258cec99219 100644
>--- a/drivers/usb/serial/ftdi_sio_ids.h
>+++ b/drivers/usb/serial/ftdi_sio_ids.h
>@@ -566,7 +566,9 @@
> /*
> * NovaTech product ids (FTDI_VID)
> */
>-#define FTDI_NT_ORIONLXM_PID 0x7c90 /* OrionLXm Substation Automation Platform */
>+#define FTDI_NT_ORIONLXM_PID 0x7c90 /* OrionLXm Substation Automation Platform */
>+#define FTDI_NT_ORIONLX_PLUS_PID 0x7c91 /* OrionLX+ Substation Automation Platform */
>+#define FTDI_NT_ORION_IO_PID 0x7c92 /* Orion I/O */
>
> /*
> * Synapse Wireless product ids (FTDI_VID)
>diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
>index 56c4f6d074ca..454898c4a137 100644
>--- a/drivers/usb/serial/mos7720.c
>+++ b/drivers/usb/serial/mos7720.c
>@@ -362,8 +362,6 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport,
> if (!urbtrack)
> return -ENOMEM;
>
>- kref_get(&mos_parport->ref_count);
>- urbtrack->mos_parport = mos_parport;
> urbtrack->urb = usb_alloc_urb(0, GFP_ATOMIC);
> if (!urbtrack->urb) {
> kfree(urbtrack);
>@@ -384,6 +382,8 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport,
> usb_sndctrlpipe(usbdev, 0),
> (unsigned char *)urbtrack->setup,
> NULL, 0, async_complete, urbtrack);
>+ kref_get(&mos_parport->ref_count);
>+ urbtrack->mos_parport = mos_parport;
> kref_init(&urbtrack->ref_count);
> INIT_LIST_HEAD(&urbtrack->urblist_entry);
>
>diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
>index 281be56d5648..56bfef517f68 100644
>--- a/drivers/usb/storage/realtek_cr.c
>+++ b/drivers/usb/storage/realtek_cr.c
>@@ -767,18 +767,16 @@ static void rts51x_suspend_timer_fn(unsigned long data)
> break;
> case RTS51X_STAT_IDLE:
> case RTS51X_STAT_SS:
>- usb_stor_dbg(us, "RTS51X_STAT_SS, intf->pm_usage_cnt:%d, power.usage:%d\n",
>- atomic_read(&us->pusb_intf->pm_usage_cnt),
>+ usb_stor_dbg(us, "RTS51X_STAT_SS, power.usage:%d\n",
> atomic_read(&us->pusb_intf->dev.power.usage_count));
>
>- if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
>+ if (atomic_read(&us->pusb_intf->dev.power.usage_count) > 0) {
> usb_stor_dbg(us, "Ready to enter SS state\n");
> rts51x_set_stat(chip, RTS51X_STAT_SS);
> /* ignore mass storage interface's children */
> pm_suspend_ignore_children(&us->pusb_intf->dev, true);
> usb_autopm_put_interface_async(us->pusb_intf);
>- usb_stor_dbg(us, "RTS51X_STAT_SS 01, intf->pm_usage_cnt:%d, power.usage:%d\n",
>- atomic_read(&us->pusb_intf->pm_usage_cnt),
>+ usb_stor_dbg(us, "RTS51X_STAT_SS 01, power.usage:%d\n",
> atomic_read(&us->pusb_intf->dev.power.usage_count));
> }
> break;
>@@ -811,11 +809,10 @@ static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
> int ret;
>
> if (working_scsi(srb)) {
>- usb_stor_dbg(us, "working scsi, intf->pm_usage_cnt:%d, power.usage:%d\n",
>- atomic_read(&us->pusb_intf->pm_usage_cnt),
>+ usb_stor_dbg(us, "working scsi, power.usage:%d\n",
> atomic_read(&us->pusb_intf->dev.power.usage_count));
>
>- if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
>+ if (atomic_read(&us->pusb_intf->dev.power.usage_count) <= 0) {
> ret = usb_autopm_get_interface(us->pusb_intf);
> usb_stor_dbg(us, "working scsi, ret=%d\n", ret);
> }
>diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
>index f544cfaa0a10..3f16c299263f 100644
>--- a/drivers/vhost/net.c
>+++ b/drivers/vhost/net.c
>@@ -39,6 +39,12 @@ MODULE_PARM_DESC(experimental_zcopytx, "Enable Zero Copy TX;"
> * Using this limit prevents one virtqueue from starving others. */
> #define VHOST_NET_WEIGHT 0x80000
>
>+/* Max number of packets transferred before requeueing the job.
>+ * Using this limit prevents one virtqueue from starving others with small
>+ * pkts.
>+ */
>+#define VHOST_NET_PKT_WEIGHT 256
>+
> /* MAX number of TX used buffers for outstanding zerocopy */
> #define VHOST_MAX_PEND 128
> #define VHOST_GOODCOPY_LEN 256
>@@ -351,6 +357,7 @@ static void handle_tx(struct vhost_net *net)
> struct socket *sock;
> struct vhost_net_ubuf_ref *uninitialized_var(ubufs);
> bool zcopy, zcopy_used;
>+ int sent_pkts = 0;
>
> mutex_lock(&vq->mutex);
> sock = vq->private_data;
>@@ -362,7 +369,7 @@ static void handle_tx(struct vhost_net *net)
> hdr_size = nvq->vhost_hlen;
> zcopy = nvq->ubufs;
>
>- for (;;) {
>+ do {
> /* Release DMAs done buffers first */
> if (zcopy)
> vhost_zerocopy_signal_used(net, vq);
>@@ -450,11 +457,7 @@ static void handle_tx(struct vhost_net *net)
> vhost_zerocopy_signal_used(net, vq);
> total_len += len;
> vhost_net_tx_packet(net);
>- if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
>- vhost_poll_queue(&vq->poll);
>- break;
>- }
>- }
>+ } while (likely(!vhost_exceeds_weight(vq, ++sent_pkts, total_len)));
> out:
> mutex_unlock(&vq->mutex);
> }
>@@ -575,6 +578,7 @@ static void handle_rx(struct vhost_net *net)
> size_t vhost_hlen, sock_hlen;
> size_t vhost_len, sock_len;
> struct socket *sock;
>+ int recv_pkts = 0;
>
> mutex_lock(&vq->mutex);
> sock = vq->private_data;
>@@ -589,7 +593,10 @@ static void handle_rx(struct vhost_net *net)
> vq->log : NULL;
> mergeable = vhost_has_feature(vq, VIRTIO_NET_F_MRG_RXBUF);
>
>- while ((sock_len = peek_head_len(sock->sk))) {
>+ do {
>+ sock_len = peek_head_len(sock->sk);
>+ if (!sock_len)
>+ break;
> sock_len += sock_hlen;
> vhost_len = sock_len + vhost_hlen;
> headcount = get_rx_bufs(vq, vq->heads, vhost_len,
>@@ -659,11 +666,8 @@ static void handle_rx(struct vhost_net *net)
> if (unlikely(vq_log))
> vhost_log_write(vq, vq_log, log, vhost_len);
> total_len += vhost_len;
>- if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
>- vhost_poll_queue(&vq->poll);
>- break;
>- }
>- }
>+ } while (likely(!vhost_exceeds_weight(vq, ++recv_pkts, total_len)));
>+
> out:
> mutex_unlock(&vq->mutex);
> }
>@@ -732,7 +736,8 @@ static int vhost_net_open(struct inode *inode, struct file *f)
> n->vqs[i].vhost_hlen = 0;
> n->vqs[i].sock_hlen = 0;
> }
>- vhost_dev_init(dev, vqs, VHOST_NET_VQ_MAX);
>+ vhost_dev_init(dev, vqs, VHOST_NET_VQ_MAX,
>+ VHOST_NET_PKT_WEIGHT, VHOST_NET_WEIGHT);
>
> vhost_poll_init(n->poll + VHOST_NET_VQ_TX, handle_tx_net, POLLOUT, dev);
> vhost_poll_init(n->poll + VHOST_NET_VQ_RX, handle_rx_net, POLLIN, dev);
>diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
>index 0dfb3fd6e836..498de4bfcd60 100644
>--- a/drivers/vhost/scsi.c
>+++ b/drivers/vhost/scsi.c
>@@ -60,6 +60,12 @@
> #define TCM_VHOST_PREALLOC_UPAGES 2048
> #define TCM_VHOST_PREALLOC_PROT_SGLS 512
>
>+/* Max number of requests before requeueing the job.
>+ * Using this limit prevents one virtqueue from starving others with
>+ * request.
>+ */
>+#define VHOST_SCSI_WEIGHT 256
>+
> struct vhost_scsi_inflight {
> /* Wait for the flush operation to finish */
> struct completion comp;
>@@ -992,7 +998,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
> u64 tag;
> u32 exp_data_len, data_first, data_num, data_direction, prot_first;
> unsigned out, in, i;
>- int head, ret, data_niov, prot_niov, prot_bytes;
>+ int head, ret, data_niov, prot_niov, prot_bytes, c = 0;
> size_t req_size;
> u16 lun;
> u8 *target, *lunp, task_attr;
>@@ -1010,7 +1016,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
>
> vhost_disable_notify(&vs->dev, vq);
>
>- for (;;) {
>+ do {
> head = vhost_get_vq_desc(vq, vq->iov,
> ARRAY_SIZE(vq->iov), &out, &in,
> NULL, NULL);
>@@ -1213,7 +1219,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
> */
> INIT_WORK(&cmd->work, tcm_vhost_submission_work);
> queue_work(tcm_vhost_workqueue, &cmd->work);
>- }
>+ } while (likely(!vhost_exceeds_weight(vq, ++c, 0)));
>
> mutex_unlock(&vq->mutex);
> return;
>@@ -1576,7 +1582,8 @@ static int vhost_scsi_open(struct inode *inode, struct file *f)
> vqs[i] = &vs->vqs[i].vq;
> vs->vqs[i].vq.handle_kick = vhost_scsi_handle_kick;
> }
>- vhost_dev_init(&vs->dev, vqs, VHOST_SCSI_MAX_VQ);
>+ vhost_dev_init(&vs->dev, vqs, VHOST_SCSI_MAX_VQ,
>+ VHOST_SCSI_WEIGHT, 0);
>
> tcm_vhost_init_inflight(vs, NULL);
>
>diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
>index 337e1d04871f..48507ef0542a 100644
>--- a/drivers/vhost/vhost.c
>+++ b/drivers/vhost/vhost.c
>@@ -292,8 +292,24 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
> vhost_vq_free_iovecs(dev->vqs[i]);
> }
>
>+bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
>+ int pkts, int total_len)
>+{
>+ struct vhost_dev *dev = vq->dev;
>+
>+ if ((dev->byte_weight && total_len >= dev->byte_weight) ||
>+ pkts >= dev->weight) {
>+ vhost_poll_queue(&vq->poll);
>+ return true;
>+ }
>+
>+ return false;
>+}
>+EXPORT_SYMBOL_GPL(vhost_exceeds_weight);
>+
> void vhost_dev_init(struct vhost_dev *dev,
>- struct vhost_virtqueue **vqs, int nvqs)
>+ struct vhost_virtqueue **vqs, int nvqs,
>+ int weight, int byte_weight)
> {
> struct vhost_virtqueue *vq;
> int i;
>@@ -308,6 +324,8 @@ void vhost_dev_init(struct vhost_dev *dev,
> spin_lock_init(&dev->work_lock);
> INIT_LIST_HEAD(&dev->work_list);
> dev->worker = NULL;
>+ dev->weight = weight;
>+ dev->byte_weight = byte_weight;
>
> for (i = 0; i < dev->nvqs; ++i) {
> vq = dev->vqs[i];
>diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
>index 3eda654b8f5a..6c4c8aade233 100644
>--- a/drivers/vhost/vhost.h
>+++ b/drivers/vhost/vhost.h
>@@ -123,9 +123,13 @@ struct vhost_dev {
> spinlock_t work_lock;
> struct list_head work_list;
> struct task_struct *worker;
>+ int weight;
>+ int byte_weight;
> };
>
>-void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs);
>+bool vhost_exceeds_weight(struct vhost_virtqueue *vq, int pkts, int total_len);
>+void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs,
>+ int nvqs, int weight, int byte_weight);
> long vhost_dev_set_owner(struct vhost_dev *dev);
> bool vhost_dev_has_owner(struct vhost_dev *dev);
> long vhost_dev_check_owner(struct vhost_dev *);
>diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
>index 176b88fa694c..ed420aa9216b 100644
>--- a/drivers/w1/masters/ds2490.c
>+++ b/drivers/w1/masters/ds2490.c
>@@ -1041,15 +1041,15 @@ static int ds_probe(struct usb_interface *intf,
> /* alternative 3, 1ms interrupt (greatly speeds search), 64 byte bulk */
> alt = 3;
> err = usb_set_interface(dev->udev,
>- intf->altsetting[alt].desc.bInterfaceNumber, alt);
>+ intf->cur_altsetting->desc.bInterfaceNumber, alt);
> if (err) {
> dev_err(&dev->udev->dev, "Failed to set alternative setting %d "
> "for %d interface: err=%d.\n", alt,
>- intf->altsetting[alt].desc.bInterfaceNumber, err);
>+ intf->cur_altsetting->desc.bInterfaceNumber, err);
> goto err_out_clear;
> }
>
>- iface_desc = &intf->altsetting[alt];
>+ iface_desc = intf->cur_altsetting;
> if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
> printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints);
> err = -EINVAL;
>diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
>index 8db7abb6ef5a..cdb055207753 100644
>--- a/drivers/xen/balloon.c
>+++ b/drivers/xen/balloon.c
>@@ -502,8 +502,15 @@ static void balloon_process(struct work_struct *work)
> state = reserve_additional_memory(credit);
> }
>
>- if (credit < 0)
>- state = decrease_reservation(-credit, GFP_BALLOON);
>+ if (credit < 0) {
>+ long n_pages;
>+
>+ n_pages = min(-credit, si_mem_available());
>+ state = decrease_reservation(n_pages, GFP_BALLOON);
>+ if (state == BP_DONE && n_pages != -credit &&
>+ n_pages < totalreserve_pages)
>+ state = BP_EAGAIN;
>+ }
>
> state = update_schedule(state);
>
>@@ -561,6 +568,9 @@ int alloc_xenballooned_pages(int nr_pages, struct page **pages, bool highmem)
> enum bp_state st;
> if (page)
> balloon_append(page);
>+ if (si_mem_available() < nr_pages)
>+ return -ENOMEM;
>+
> st = decrease_reservation(nr_pages - pgno,
> highmem ? GFP_HIGHUSER : GFP_USER);
> if (st != BP_DONE)
>@@ -692,7 +702,7 @@ static int __init balloon_init(void)
> balloon_stats.schedule_delay = 1;
> balloon_stats.max_schedule_delay = 32;
> balloon_stats.retry_count = 1;
>- balloon_stats.max_retry_count = RETRY_UNLIMITED;
>+ balloon_stats.max_retry_count = 4;
>
> #ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
> balloon_stats.hotplug_pages = 0;
>diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
>index c2e930ec2888..696db173e26f 100644
>--- a/fs/afs/fsclient.c
>+++ b/fs/afs/fsclient.c
>@@ -1382,8 +1382,8 @@ static int afs_fs_setattr_size64(struct afs_server *server, struct key *key,
>
> xdr_encode_AFS_StoreStatus(&bp, attr);
>
>- *bp++ = 0; /* position of start of write */
>- *bp++ = 0;
>+ *bp++ = htonl(attr->ia_size >> 32); /* position of start of write */
>+ *bp++ = htonl((u32) attr->ia_size);
> *bp++ = 0; /* size of write */
> *bp++ = 0;
> *bp++ = htonl(attr->ia_size >> 32); /* new file length */
>@@ -1433,7 +1433,7 @@ static int afs_fs_setattr_size(struct afs_server *server, struct key *key,
>
> xdr_encode_AFS_StoreStatus(&bp, attr);
>
>- *bp++ = 0; /* position of start of write */
>+ *bp++ = htonl(attr->ia_size); /* position of start of write */
> *bp++ = 0; /* size of write */
> *bp++ = htonl(attr->ia_size); /* new file length */
>
>diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
>index 6db91cdbd92d..6a02cb3e5650 100644
>--- a/fs/btrfs/compression.c
>+++ b/fs/btrfs/compression.c
>@@ -42,6 +42,8 @@
> #include "extent_io.h"
> #include "extent_map.h"
>
>+static const char* const btrfs_compress_types[] = { "", "zlib", "lzo" };
>+
> struct compressed_bio {
> /* number of bios pending for this compressed extent */
> atomic_t pending_bios;
>@@ -81,6 +83,22 @@ struct compressed_bio {
> u32 sums;
> };
>
>+bool btrfs_compress_is_valid_type(const char *str, size_t len)
>+{
>+ int i;
>+
>+ for (i = 1; i < ARRAY_SIZE(btrfs_compress_types); i++) {
>+ size_t comp_len = strlen(btrfs_compress_types[i]);
>+
>+ if (len < comp_len)
>+ continue;
>+
>+ if (!strncmp(btrfs_compress_types[i], str, comp_len))
>+ return true;
>+ }
>+ return false;
>+}
>+
> static int btrfs_decompress_biovec(int type, struct page **pages_in,
> u64 disk_start, struct bio_vec *bvec,
> int vcnt, size_t srclen);
>diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
>index d181f70caae0..5f15b34d88f7 100644
>--- a/fs/btrfs/compression.h
>+++ b/fs/btrfs/compression.h
>@@ -80,4 +80,5 @@ struct btrfs_compress_op {
> extern struct btrfs_compress_op btrfs_zlib_compress;
> extern struct btrfs_compress_op btrfs_lzo_compress;
>
>+bool btrfs_compress_is_valid_type(const char *str, size_t len);
> #endif
>diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
>index 129b1dd28527..8b041d83533a 100644
>--- a/fs/btrfs/props.c
>+++ b/fs/btrfs/props.c
>@@ -22,6 +22,7 @@
> #include "hash.h"
> #include "transaction.h"
> #include "xattr.h"
>+#include "compression.h"
>
> #define BTRFS_PROP_HANDLERS_HT_BITS 8
> static DEFINE_HASHTABLE(prop_handlers_ht, BTRFS_PROP_HANDLERS_HT_BITS);
>@@ -378,9 +379,7 @@ int btrfs_subvol_inherit_props(struct btrfs_trans_handle *trans,
>
> static int prop_compression_validate(const char *value, size_t len)
> {
>- if (!strncmp("lzo", value, len))
>- return 0;
>- else if (!strncmp("zlib", value, len))
>+ if (btrfs_compress_is_valid_type(value, len))
> return 0;
>
> return -EINVAL;
>diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
>index 5e2005030f54..bdda508cc85d 100644
>--- a/fs/ceph/dir.c
>+++ b/fs/ceph/dir.c
>@@ -1327,6 +1327,7 @@ void ceph_dentry_lru_del(struct dentry *dn)
> unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)
> {
> struct ceph_inode_info *dci = ceph_inode(dir);
>+ unsigned hash;
>
> switch (dci->i_dir_layout.dl_dir_hash) {
> case 0: /* for backward compat */
>@@ -1334,8 +1335,11 @@ unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)
> return dn->d_name.hash;
>
> default:
>- return ceph_str_hash(dci->i_dir_layout.dl_dir_hash,
>+ spin_lock(&dn->d_lock);
>+ hash = ceph_str_hash(dci->i_dir_layout.dl_dir_hash,
> dn->d_name.name, dn->d_name.len);
>+ spin_unlock(&dn->d_lock);
>+ return hash;
> }
> }
>
>diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
>index 23f5cb1ee904..ff85c3129e9d 100644
>--- a/fs/cifs/cifsglob.h
>+++ b/fs/cifs/cifsglob.h
>@@ -1092,6 +1092,7 @@ cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file)
> }
>
> struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file);
>+void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr);
> void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
>
> #define CIFS_CACHE_READ_FLG 1
>@@ -1579,6 +1580,7 @@ GLOBAL_EXTERN spinlock_t gidsidlock;
> #endif /* CONFIG_CIFS_ACL */
>
> void cifs_oplock_break(struct work_struct *work);
>+void cifs_queue_oplock_break(struct cifsFileInfo *cfile);
>
> extern const struct slow_work_ops cifs_oplock_break_ops;
> extern struct workqueue_struct *cifsiod_wq;
>diff --git a/fs/cifs/file.c b/fs/cifs/file.c
>index 4b8870f889e3..9b3d28b79329 100644
>--- a/fs/cifs/file.c
>+++ b/fs/cifs/file.c
>@@ -359,12 +359,30 @@ cifsFileInfo_get(struct cifsFileInfo *cifs_file)
> return cifs_file;
> }
>
>-/*
>- * Release a reference on the file private data. This may involve closing
>- * the filehandle out on the server. Must be called without holding
>- * tcon->open_file_lock and cifs_file->file_info_lock.
>+/**
>+ * cifsFileInfo_put - release a reference of file priv data
>+ *
>+ * Always potentially wait for oplock handler. See _cifsFileInfo_put().
> */
> void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
>+{
>+ _cifsFileInfo_put(cifs_file, true);
>+}
>+
>+/**
>+ * _cifsFileInfo_put - release a reference of file priv data
>+ *
>+ * This may involve closing the filehandle @cifs_file out on the
>+ * server. Must be called without holding tcon->open_file_lock and
>+ * cifs_file->file_info_lock.
>+ *
>+ * If @wait_for_oplock_handler is true and we are releasing the last
>+ * reference, wait for any running oplock break handler of the file
>+ * and cancel any pending one. If calling this function from the
>+ * oplock break handler, you need to pass false.
>+ *
>+ */
>+void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_handler)
> {
> struct inode *inode = cifs_file->dentry->d_inode;
> struct cifs_tcon *tcon = tlink_tcon(cifs_file->tlink);
>@@ -412,7 +430,8 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
>
> spin_unlock(&tcon->open_file_lock);
>
>- oplock_break_cancelled = cancel_work_sync(&cifs_file->oplock_break);
>+ oplock_break_cancelled = wait_oplock_handler ?
>+ cancel_work_sync(&cifs_file->oplock_break) : false;
>
> if (!tcon->need_reconnect && !cifs_file->invalidHandle) {
> struct TCP_Server_Info *server = tcon->ses->server;
>@@ -3701,6 +3720,7 @@ void cifs_oplock_break(struct work_struct *work)
> cinode);
> cifs_dbg(FYI, "Oplock release rc = %d\n", rc);
> }
>+ _cifsFileInfo_put(cfile, false /* do not wait for ourself */);
> cifs_done_oplock_break(cinode);
> }
>
>diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
>index 09ca7c978700..f681091ec3db 100644
>--- a/fs/cifs/inode.c
>+++ b/fs/cifs/inode.c
>@@ -1627,6 +1627,10 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
> if (rc == 0 || rc != -EBUSY)
> goto do_rename_exit;
>
>+ /* Don't fall back to using SMB on SMB 2+ mount */
>+ if (server->vals->protocol_id != 0)
>+ goto do_rename_exit;
>+
> /* open-file renames don't work across directories */
> if (to_dentry->d_parent != from_dentry->d_parent)
> goto do_rename_exit;
>diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
>index f03fecafc5d5..debc26b95cd7 100644
>--- a/fs/cifs/misc.c
>+++ b/fs/cifs/misc.c
>@@ -477,8 +477,7 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
> CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
> &pCifsInode->flags);
>
>- queue_work(cifsoplockd_wq,
>- &netfile->oplock_break);
>+ cifs_queue_oplock_break(netfile);
> netfile->oplock_break_cancelled = false;
>
> spin_unlock(&tcon->open_file_lock);
>@@ -610,6 +609,28 @@ void cifs_put_writer(struct cifsInodeInfo *cinode)
> spin_unlock(&cinode->writers_lock);
> }
>
>+/**
>+ * cifs_queue_oplock_break - queue the oplock break handler for cfile
>+ *
>+ * This function is called from the demultiplex thread when it
>+ * receives an oplock break for @cfile.
>+ *
>+ * Assumes the tcon->open_file_lock is held.
>+ * Assumes cfile->file_info_lock is NOT held.
>+ */
>+void cifs_queue_oplock_break(struct cifsFileInfo *cfile)
>+{
>+ /*
>+ * Bump the handle refcount now while we hold the
>+ * open_file_lock to enforce the validity of it for the oplock
>+ * break handler. The matching put is done at the end of the
>+ * handler.
>+ */
>+ cifsFileInfo_get(cfile);
>+
>+ queue_work(cifsoplockd_wq, &cfile->oplock_break);
>+}
>+
> void cifs_done_oplock_break(struct cifsInodeInfo *cinode)
> {
> clear_bit(CIFS_INODE_PENDING_OPLOCK_BREAK, &cinode->flags);
>diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
>index 1485ab8c2d65..f80fcc6921ee 100644
>--- a/fs/cifs/smb2misc.c
>+++ b/fs/cifs/smb2misc.c
>@@ -458,7 +458,7 @@ smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp,
> clear_bit(CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
> &cinode->flags);
>
>- queue_work(cifsoplockd_wq, &cfile->oplock_break);
>+ cifs_queue_oplock_break(cfile);
> kfree(lw);
> return true;
> }
>@@ -602,8 +602,8 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
> CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
> &cinode->flags);
> spin_unlock(&cfile->file_info_lock);
>- queue_work(cifsoplockd_wq,
>- &cfile->oplock_break);
>+
>+ cifs_queue_oplock_break(cfile);
>
> spin_unlock(&tcon->open_file_lock);
> spin_unlock(&cifs_tcp_ses_lock);
>diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
>index 376ccd96127f..d95a547cf94e 100644
>--- a/fs/cifs/smb2ops.c
>+++ b/fs/cifs/smb2ops.c
>@@ -906,6 +906,8 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
>
> rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
>
>+ if (!rc)
>+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
> if (!rc || !err_buf) {
> kfree(utf16_path);
> return -ENOENT;
>diff --git a/fs/ext4/file.c b/fs/ext4/file.c
>index 40c86790109e..201f683bea89 100644
>--- a/fs/ext4/file.c
>+++ b/fs/ext4/file.c
>@@ -79,7 +79,7 @@ ext4_unaligned_aio(struct inode *inode, struct iov_iter *from, loff_t pos)
> struct super_block *sb = inode->i_sb;
> int blockmask = sb->s_blocksize - 1;
>
>- if (pos >= i_size_read(inode))
>+ if (pos >= ALIGN(i_size_read(inode), sb->s_blocksize))
> return 0;
>
> if ((pos | iov_iter_alignment(from)) & blockmask)
>diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
>index 80c3f1ed1afa..63597cd0265c 100644
>--- a/fs/ext4/resize.c
>+++ b/fs/ext4/resize.c
>@@ -908,11 +908,18 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
> memcpy(n_group_desc, o_group_desc,
> EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
> n_group_desc[gdb_num] = gdb_bh;
>+
>+ BUFFER_TRACE(gdb_bh, "get_write_access");
>+ err = ext4_journal_get_write_access(handle, gdb_bh);
>+ if (err) {
>+ kvfree(n_group_desc);
>+ brelse(gdb_bh);
>+ return err;
>+ }
>+
> EXT4_SB(sb)->s_group_desc = n_group_desc;
> EXT4_SB(sb)->s_gdb_count++;
> ext4_kvfree(o_group_desc);
>- BUFFER_TRACE(gdb_bh, "get_write_access");
>- err = ext4_journal_get_write_access(handle, gdb_bh);
> return err;
> }
>
>diff --git a/fs/lockd/host.c b/fs/lockd/host.c
>index b31117c12102..6f12147a2fea 100644
>--- a/fs/lockd/host.c
>+++ b/fs/lockd/host.c
>@@ -288,12 +288,11 @@ void nlmclnt_release_host(struct nlm_host *host)
>
> WARN_ON_ONCE(host->h_server);
>
>- if (atomic_dec_and_test(&host->h_count)) {
>+ if (atomic_dec_and_mutex_lock(&host->h_count, &nlm_host_mutex)) {
> WARN_ON_ONCE(!list_empty(&host->h_lockowners));
> WARN_ON_ONCE(!list_empty(&host->h_granted));
> WARN_ON_ONCE(!list_empty(&host->h_reclaim));
>
>- mutex_lock(&nlm_host_mutex);
> nlm_destroy_host_locked(host);
> mutex_unlock(&nlm_host_mutex);
> }
>diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
>index 7445af0b1aa3..a0bc66039269 100644
>--- a/fs/proc/meminfo.c
>+++ b/fs/proc/meminfo.c
>@@ -27,10 +27,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
> struct vmalloc_info vmi;
> long cached;
> long available;
>- unsigned long pagecache;
>- unsigned long wmark_low = 0;
> unsigned long pages[NR_LRU_LISTS];
>- struct zone *zone;
> int lru;
>
> /*
>@@ -51,36 +48,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
> for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
> pages[lru] = global_page_state(NR_LRU_BASE + lru);
>
>- for_each_zone(zone)
>- wmark_low += zone->watermark[WMARK_LOW];
>-
>- /*
>- * Estimate the amount of memory available for userspace allocations,
>- * without causing swapping.
>- *
>- * Free memory cannot be taken below the low watermark, before the
>- * system starts swapping.
>- */
>- available = i.freeram - wmark_low;
>-
>- /*
>- * Not all the page cache can be freed, otherwise the system will
>- * start swapping. Assume at least half of the page cache, or the
>- * low watermark worth of cache, needs to stay.
>- */
>- pagecache = pages[LRU_ACTIVE_FILE] + pages[LRU_INACTIVE_FILE];
>- pagecache -= min(pagecache / 2, wmark_low);
>- available += pagecache;
>-
>- /*
>- * Part of the reclaimable slab consists of items that are in use,
>- * and cannot be freed. Cap this estimate at the low watermark.
>- */
>- available += global_page_state(NR_SLAB_RECLAIMABLE) -
>- min(global_page_state(NR_SLAB_RECLAIMABLE) / 2, wmark_low);
>-
>- if (available < 0)
>- available = 0;
>+ available = si_mem_available();
>
> /*
> * Tagged format, for easy grepping and expansion.
>diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
>index bfb8e8d588b8..eb7067de78db 100644
>--- a/fs/proc/proc_sysctl.c
>+++ b/fs/proc/proc_sysctl.c
>@@ -1550,8 +1550,11 @@ static void drop_sysctl_table(struct ctl_table_header *header)
> if (--header->nreg)
> return;
>
>- put_links(header);
>- start_unregistering(header);
>+ if (parent) {
>+ put_links(header);
>+ start_unregistering(header);
>+ }
>+
> if (!--header->count)
> kfree_rcu(header, rcu);
>
>diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c
>index 8a9657d7f7c6..8df2632a2966 100644
>--- a/fs/udf/truncate.c
>+++ b/fs/udf/truncate.c
>@@ -261,6 +261,9 @@ void udf_truncate_extents(struct inode *inode)
> epos.block = eloc;
> epos.bh = udf_tread(sb,
> udf_get_lb_pblock(sb, &eloc, 0));
>+ /* Error reading indirect block? */
>+ if (!epos.bh)
>+ return;
> if (elen)
> indirect_ext_len =
> (elen + sb->s_blocksize - 1) >>
>diff --git a/fs/ufs/util.h b/fs/ufs/util.h
>index 3f9463f8cf2f..f877d5cadd98 100644
>--- a/fs/ufs/util.h
>+++ b/fs/ufs/util.h
>@@ -228,7 +228,7 @@ ufs_get_inode_gid(struct super_block *sb, struct ufs_inode *inode)
> case UFS_UID_44BSD:
> return fs32_to_cpu(sb, inode->ui_u3.ui_44.ui_gid);
> case UFS_UID_EFT:
>- if (inode->ui_u1.oldids.ui_suid == 0xFFFF)
>+ if (inode->ui_u1.oldids.ui_sgid == 0xFFFF)
> return fs32_to_cpu(sb, inode->ui_u3.ui_sun.ui_gid);
> /* Fall through */
> default:
>diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
>index 8c0ff78ff45a..83fac3e091c2 100644
>--- a/include/linux/kprobes.h
>+++ b/include/linux/kprobes.h
>@@ -197,6 +197,7 @@ struct kretprobe_instance {
> struct kretprobe *rp;
> kprobe_opcode_t *ret_addr;
> struct task_struct *task;
>+ void *fp;
> char data[0];
> };
>
>diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
>index 64c7425afbce..f2bca5a77851 100644
>--- a/include/linux/lockdep.h
>+++ b/include/linux/lockdep.h
>@@ -525,9 +525,24 @@ do { \
> lock_acquire(&(lock)->dep_map, 0, 0, 1, 1, NULL, _THIS_IP_); \
> lock_release(&(lock)->dep_map, 0, _THIS_IP_); \
> } while (0)
>+
>+#define lockdep_assert_irqs_enabled() do { \
>+ WARN_ONCE(debug_locks && !current->lockdep_recursion && \
>+ !current->hardirqs_enabled, \
>+ "IRQs not enabled as expected\n"); \
>+ } while (0)
>+
>+#define lockdep_assert_irqs_disabled() do { \
>+ WARN_ONCE(debug_locks && !current->lockdep_recursion && \
>+ current->hardirqs_enabled, \
>+ "IRQs not disabled as expected\n"); \
>+ } while (0)
>+
> #else
> # define might_lock(lock) do { } while (0)
> # define might_lock_read(lock) do { } while (0)
>+# define lockdep_assert_irqs_enabled() do { } while (0)
>+# define lockdep_assert_irqs_disabled() do { } while (0)
> #endif
>
> #ifdef CONFIG_PROVE_RCU
>diff --git a/include/linux/mm.h b/include/linux/mm.h
>index a576467cd4a5..e67e12641b63 100644
>--- a/include/linux/mm.h
>+++ b/include/linux/mm.h
>@@ -1699,6 +1699,7 @@ extern int __meminit init_per_zone_wmark_min(void);
> extern void mem_init(void);
> extern void __init mmap_init(void);
> extern void show_mem(unsigned int flags);
>+extern long si_mem_available(void);
> extern void si_meminfo(struct sysinfo * val);
> extern void si_meminfo_node(struct sysinfo *val, int nid);
>
>diff --git a/include/linux/siphash.h b/include/linux/siphash.h
>new file mode 100644
>index 000000000000..c8c7ae2e687b
>--- /dev/null
>+++ b/include/linux/siphash.h
>@@ -0,0 +1,90 @@
>+/* Copyright (C) 2016 Jason A. Donenfeld <Jason@...c4.com>. All Rights Reserved.
>+ *
>+ * This file is provided under a dual BSD/GPLv2 license.
>+ *
>+ * SipHash: a fast short-input PRF
>+ * https://131002.net/siphash/
>+ *
>+ * This implementation is specifically for SipHash2-4.
>+ */
>+
>+#ifndef _LINUX_SIPHASH_H
>+#define _LINUX_SIPHASH_H
>+
>+#include <linux/types.h>
>+#include <linux/kernel.h>
>+
>+#define SIPHASH_ALIGNMENT __alignof__(u64)
>+typedef struct {
>+ u64 key[2];
>+} siphash_key_t;
>+
>+static inline bool siphash_key_is_zero(const siphash_key_t *key)
>+{
>+ return !(key->key[0] | key->key[1]);
>+}
>+
>+u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key);
>+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
>+u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key);
>+#endif
>+
>+u64 siphash_1u64(const u64 a, const siphash_key_t *key);
>+u64 siphash_2u64(const u64 a, const u64 b, const siphash_key_t *key);
>+u64 siphash_3u64(const u64 a, const u64 b, const u64 c,
>+ const siphash_key_t *key);
>+u64 siphash_4u64(const u64 a, const u64 b, const u64 c, const u64 d,
>+ const siphash_key_t *key);
>+u64 siphash_1u32(const u32 a, const siphash_key_t *key);
>+u64 siphash_3u32(const u32 a, const u32 b, const u32 c,
>+ const siphash_key_t *key);
>+
>+static inline u64 siphash_2u32(const u32 a, const u32 b,
>+ const siphash_key_t *key)
>+{
>+ return siphash_1u64((u64)b << 32 | a, key);
>+}
>+static inline u64 siphash_4u32(const u32 a, const u32 b, const u32 c,
>+ const u32 d, const siphash_key_t *key)
>+{
>+ return siphash_2u64((u64)b << 32 | a, (u64)d << 32 | c, key);
>+}
>+
>+
>+static inline u64 ___siphash_aligned(const __le64 *data, size_t len,
>+ const siphash_key_t *key)
>+{
>+ if (__builtin_constant_p(len) && len == 4)
>+ return siphash_1u32(le32_to_cpup((const __le32 *)data), key);
>+ if (__builtin_constant_p(len) && len == 8)
>+ return siphash_1u64(le64_to_cpu(data[0]), key);
>+ if (__builtin_constant_p(len) && len == 16)
>+ return siphash_2u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
>+ key);
>+ if (__builtin_constant_p(len) && len == 24)
>+ return siphash_3u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
>+ le64_to_cpu(data[2]), key);
>+ if (__builtin_constant_p(len) && len == 32)
>+ return siphash_4u64(le64_to_cpu(data[0]), le64_to_cpu(data[1]),
>+ le64_to_cpu(data[2]), le64_to_cpu(data[3]),
>+ key);
>+ return __siphash_aligned(data, len, key);
>+}
>+
>+/**
>+ * siphash - compute 64-bit siphash PRF value
>+ * @data: buffer to hash
>+ * @size: size of @data
>+ * @key: the siphash key
>+ */
>+static inline u64 siphash(const void *data, size_t len,
>+ const siphash_key_t *key)
>+{
>+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
>+ if (!IS_ALIGNED((unsigned long)data, SIPHASH_ALIGNMENT))
>+ return __siphash_unaligned(data, len, key);
>+#endif
>+ return ___siphash_aligned(data, len, key);
>+}
>+
>+#endif /* _LINUX_SIPHASH_H */
>diff --git a/include/linux/string.h b/include/linux/string.h
>index dd71dd08a840..85491dd76903 100644
>--- a/include/linux/string.h
>+++ b/include/linux/string.h
>@@ -113,6 +113,9 @@ extern void * memscan(void *,int,__kernel_size_t);
> #ifndef __HAVE_ARCH_MEMCMP
> extern int memcmp(const void *,const void *,__kernel_size_t);
> #endif
>+#ifndef __HAVE_ARCH_BCMP
>+extern int bcmp(const void *,const void *,__kernel_size_t);
>+#endif
> #ifndef __HAVE_ARCH_MEMCHR
> extern void * memchr(const void *,int,__kernel_size_t);
> #endif
>diff --git a/include/linux/usb.h b/include/linux/usb.h
>index a53e036b2252..64a39f02a5f6 100644
>--- a/include/linux/usb.h
>+++ b/include/linux/usb.h
>@@ -125,7 +125,6 @@ enum usb_interface_condition {
> * @dev: driver model's view of this device
> * @usb_dev: if an interface is bound to the USB major, this will point
> * to the sysfs representation for that device.
>- * @pm_usage_cnt: PM usage counter for this interface
> * @reset_ws: Used for scheduling resets from atomic context.
> * @reset_running: set to 1 if the interface is currently running a
> * queued reset so that usb_cancel_queued_reset() doesn't try to
>@@ -186,7 +185,6 @@ struct usb_interface {
>
> struct device dev; /* interface specific device info */
> struct device *usb_dev;
>- atomic_t pm_usage_cnt; /* usage counter for autosuspend */
> struct work_struct reset_ws; /* for resets in atomic context */
> };
> #define to_usb_interface(d) container_of(d, struct usb_interface, dev)
>diff --git a/include/net/ip.h b/include/net/ip.h
>index 27dd9826e05d..8ec53320c902 100644
>--- a/include/net/ip.h
>+++ b/include/net/ip.h
>@@ -319,9 +319,10 @@ static inline unsigned int ip_skb_dst_mtu(const struct sk_buff *skb)
> }
>
> u32 ip_idents_reserve(u32 hash, int segs);
>-void __ip_select_ident(struct iphdr *iph, int segs);
>+void __ip_select_ident(struct net *net, struct iphdr *iph, int segs);
>
>-static inline void ip_select_ident_segs(struct sk_buff *skb, struct sock *sk, int segs)
>+static inline void ip_select_ident_segs(struct net *net, struct sk_buff *skb,
>+ struct sock *sk, int segs)
> {
> struct iphdr *iph = ip_hdr(skb);
>
>@@ -338,13 +339,14 @@ static inline void ip_select_ident_segs(struct sk_buff *skb, struct sock *sk, in
> iph->id = 0;
> }
> } else {
>- __ip_select_ident(iph, segs);
>+ __ip_select_ident(net, iph, segs);
> }
> }
>
>-static inline void ip_select_ident(struct sk_buff *skb, struct sock *sk)
>+static inline void ip_select_ident(struct net *net, struct sk_buff *skb,
>+ struct sock *sk)
> {
>- ip_select_ident_segs(skb, sk, 1);
>+ ip_select_ident_segs(net, skb, sk, 1);
> }
>
> static inline __wsum inet_compute_pseudo(struct sk_buff *skb, int proto)
>diff --git a/include/net/ipv6.h b/include/net/ipv6.h
>index c30ba46ef2f0..c4e455f4bfe6 100644
>--- a/include/net/ipv6.h
>+++ b/include/net/ipv6.h
>@@ -688,7 +688,9 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add
> return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
> }
>
>-void ipv6_proxy_select_ident(struct sk_buff *skb);
>+void ipv6_select_ident(struct net *net, struct frag_hdr *fhdr,
>+ struct rt6_info *rt);
>+void ipv6_proxy_select_ident(struct net *net, struct sk_buff *skb);
>
> int ip6_dst_hoplimit(struct dst_entry *dst);
>
>diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
>index 5c53572b5f0d..3b66e31a7819 100644
>--- a/include/net/netfilter/nf_conntrack.h
>+++ b/include/net/netfilter/nf_conntrack.h
>@@ -289,6 +289,8 @@ void init_nf_conntrack_hash_rnd(void);
>
> void nf_conntrack_tmpl_insert(struct net *net, struct nf_conn *tmpl);
>
>+u32 nf_ct_get_id(const struct nf_conn *ct);
>+
> #define NF_CT_STAT_INC(net, count) __this_cpu_inc((net)->ct.stat->count)
> #define NF_CT_STAT_INC_ATOMIC(net, count) this_cpu_inc((net)->ct.stat->count)
>
>diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
>index 80a1c572b9a0..213f53d4f6b2 100644
>--- a/include/net/netns/ipv4.h
>+++ b/include/net/netns/ipv4.h
>@@ -7,6 +7,7 @@
>
> #include <linux/uidgid.h>
> #include <net/inet_frag.h>
>+#include <linux/siphash.h>
>
> struct tcpm_hash_bucket;
> struct ctl_table_header;
>@@ -98,5 +99,6 @@ struct netns_ipv4 {
> #endif
> #endif
> atomic_t rt_genid;
>+ siphash_key_t ip_id_key;
> };
> #endif
>diff --git a/include/net/sctp/checksum.h b/include/net/sctp/checksum.h
>index 32ee65a30aff..1c6e6c0766ca 100644
>--- a/include/net/sctp/checksum.h
>+++ b/include/net/sctp/checksum.h
>@@ -61,7 +61,7 @@ static inline __wsum sctp_csum_combine(__wsum csum, __wsum csum2,
> static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
> unsigned int offset)
> {
>- struct sctphdr *sh = sctp_hdr(skb);
>+ struct sctphdr *sh = (struct sctphdr *)(skb->data + offset);
> const struct skb_checksum_ops ops = {
> .update = sctp_csum_update,
> .combine = sctp_csum_combine,
>diff --git a/kernel/events/core.c b/kernel/events/core.c
>index e8be52939ed1..3beed0ea98d9 100644
>--- a/kernel/events/core.c
>+++ b/kernel/events/core.c
>@@ -5445,6 +5445,7 @@ static void perf_event_mmap_output(struct perf_event *event,
> struct perf_output_handle handle;
> struct perf_sample_data sample;
> int size = mmap_event->event_id.header.size;
>+ u32 type = mmap_event->event_id.header.type;
> int ret;
>
> if (!perf_event_mmap_match(event, data))
>@@ -5488,6 +5489,7 @@ static void perf_event_mmap_output(struct perf_event *event,
> perf_output_end(&handle);
> out:
> mmap_event->event_id.header.size = size;
>+ mmap_event->event_id.header.type = type;
> }
>
> static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
>diff --git a/kernel/futex.c b/kernel/futex.c
>index 0ee2f54d74fb..99679c0040cc 100644
>--- a/kernel/futex.c
>+++ b/kernel/futex.c
>@@ -2909,6 +2909,10 @@ int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi)
> {
> u32 uval, uninitialized_var(nval), mval;
>
>+ /* Futex address must be 32bit aligned */
>+ if ((((unsigned long)uaddr) % sizeof(*uaddr)) != 0)
>+ return -1;
>+
> retry:
> if (get_user(uval, uaddr))
> return -1;
>diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
>index 328410652be6..f967ff776e5b 100644
>--- a/kernel/sched/fair.c
>+++ b/kernel/sched/fair.c
>@@ -1503,6 +1503,10 @@ static u64 numa_get_avg_runtime(struct task_struct *p, u64 *period)
> if (p->last_task_numa_placement) {
> delta = runtime - p->last_sum_exec_runtime;
> *period = now - p->last_task_numa_placement;
>+
>+ /* Avoid time going backwards, prevent potential divide error: */
>+ if (unlikely((s64)*period < 0))
>+ *period = 0;
> } else {
> delta = p->se.avg.runnable_avg_sum;
> *period = p->se.avg.runnable_avg_period;
>@@ -3704,6 +3708,8 @@ static enum hrtimer_restart sched_cfs_slack_timer(struct hrtimer *timer)
> return HRTIMER_NORESTART;
> }
>
>+extern const u64 max_cfs_quota_period;
>+
> static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
> {
> struct cfs_bandwidth *cfs_b =
>@@ -3711,6 +3717,7 @@ static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
> ktime_t now;
> int overrun;
> int idle = 0;
>+ int count = 0;
>
> raw_spin_lock(&cfs_b->lock);
> for (;;) {
>@@ -3720,6 +3727,28 @@ static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
> if (!overrun)
> break;
>
>+ if (++count > 3) {
>+ u64 new, old = ktime_to_ns(cfs_b->period);
>+
>+ new = (old * 147) / 128; /* ~115% */
>+ new = min(new, max_cfs_quota_period);
>+
>+ cfs_b->period = ns_to_ktime(new);
>+
>+ /* since max is 1s, this is limited to 1e9^2, which fits in u64 */
>+ cfs_b->quota *= new;
>+ cfs_b->quota = div64_u64(cfs_b->quota, old);
>+
>+ pr_warn_ratelimited(
>+ "cfs_period_timer[cpu%d]: period too short, scaling up (new cfs_period_us %lld, cfs_quota_us = %lld)\n",
>+ smp_processor_id(),
>+ div_u64(new, NSEC_PER_USEC),
>+ div_u64(cfs_b->quota, NSEC_PER_USEC));
>+
>+ /* reset count so we don't come right back in here */
>+ count = 0;
>+ }
>+
> idle = do_sched_cfs_period_timer(cfs_b, overrun);
> }
> raw_spin_unlock(&cfs_b->lock);
>@@ -5487,10 +5516,10 @@ static void update_cfs_rq_h_load(struct cfs_rq *cfs_rq)
> if (cfs_rq->last_h_load_update == now)
> return;
>
>- cfs_rq->h_load_next = NULL;
>+ ACCESS_ONCE(cfs_rq->h_load_next) = NULL;
> for_each_sched_entity(se) {
> cfs_rq = cfs_rq_of(se);
>- cfs_rq->h_load_next = se;
>+ ACCESS_ONCE(cfs_rq->h_load_next) = se;
> if (cfs_rq->last_h_load_update == now)
> break;
> }
>@@ -5500,7 +5529,7 @@ static void update_cfs_rq_h_load(struct cfs_rq *cfs_rq)
> cfs_rq->last_h_load_update = now;
> }
>
>- while ((se = cfs_rq->h_load_next) != NULL) {
>+ while ((se = ACCESS_ONCE(cfs_rq->h_load_next)) != NULL) {
> load = cfs_rq->h_load;
> load = div64_ul(load * se->avg.load_avg_contrib,
> cfs_rq->runnable_load_avg + 1);
>diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
>index 8ee705e1d472..c59d43d54d32 100644
>--- a/kernel/trace/ftrace.c
>+++ b/kernel/trace/ftrace.c
>@@ -32,6 +32,7 @@
> #include <linux/list.h>
> #include <linux/hash.h>
> #include <linux/rcupdate.h>
>+#include <linux/kprobes.h>
>
> #include <trace/events/sched.h>
>
>@@ -4508,7 +4509,7 @@ static struct ftrace_ops control_ops = {
> INIT_OPS_HASH(control_ops)
> };
>
>-static inline void
>+static nokprobe_inline void
> __ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
> struct ftrace_ops *ignored, struct pt_regs *regs)
> {
>@@ -4561,11 +4562,13 @@ static void ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
> {
> __ftrace_ops_list_func(ip, parent_ip, NULL, regs);
> }
>+NOKPROBE_SYMBOL(ftrace_ops_list_func);
> #else
> static void ftrace_ops_no_ops(unsigned long ip, unsigned long parent_ip)
> {
> __ftrace_ops_list_func(ip, parent_ip, NULL, NULL);
> }
>+NOKPROBE_SYMBOL(ftrace_ops_no_ops);
> #endif
>
> static void clear_ftrace_swapper(void)
>diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
>index 107e8ce1a87e..89d99ccb1617 100644
>--- a/kernel/trace/ring_buffer.c
>+++ b/kernel/trace/ring_buffer.c
>@@ -729,7 +729,7 @@ u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu)
>
> preempt_disable_notrace();
> time = rb_time_stamp(buffer);
>- preempt_enable_no_resched_notrace();
>+ preempt_enable_notrace();
>
> return time;
> }
>diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
>index 7a638aa3545b..3678fc124dc1 100644
>--- a/lib/Kconfig.debug
>+++ b/lib/Kconfig.debug
>@@ -1550,6 +1550,16 @@ config TEST_STRING_HELPERS
> config TEST_KSTRTOX
> tristate "Test kstrto*() family of functions at runtime"
>
>+config TEST_HASH
>+ tristate "Perform selftest on hash functions"
>+ default n
>+ help
>+ Enable this option to test the kernel's siphash (<linux/siphash.h>)
>+ hash functions on boot (or module load).
>+
>+ This is intended to help people writing architecture-specific
>+ optimized versions. If unsure, say N.
>+
> endmenu # runtime tests
>
> config PROVIDE_OHCI1394_DMA_INIT
>diff --git a/lib/Makefile b/lib/Makefile
>index ba967a19edba..31a4389ff179 100644
>--- a/lib/Makefile
>+++ b/lib/Makefile
>@@ -26,10 +26,11 @@ obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
> bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \
> gcd.o lcm.o list_sort.o uuid.o flex_array.o iovec.o clz_ctz.o \
> bsearch.o find_last_bit.o find_next_bit.o llist.o memweight.o kfifo.o \
>- percpu-refcount.o percpu_ida.o hash.o
>+ percpu-refcount.o percpu_ida.o hash.o siphash.o
> obj-y += string_helpers.o
> obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
> obj-y += kstrtox.o
>+obj-$(CONFIG_TEST_HASH) += test_siphash.o
> obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
> obj-$(CONFIG_TEST_MODULE) += test_module.o
> obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
>diff --git a/lib/siphash.c b/lib/siphash.c
>new file mode 100644
>index 000000000000..c43cf406e71b
>--- /dev/null
>+++ b/lib/siphash.c
>@@ -0,0 +1,232 @@
>+/* Copyright (C) 2016 Jason A. Donenfeld <Jason@...c4.com>. All Rights Reserved.
>+ *
>+ * This file is provided under a dual BSD/GPLv2 license.
>+ *
>+ * SipHash: a fast short-input PRF
>+ * https://131002.net/siphash/
>+ *
>+ * This implementation is specifically for SipHash2-4.
>+ */
>+
>+#include <linux/siphash.h>
>+#include <asm/unaligned.h>
>+
>+#if defined(CONFIG_DCACHE_WORD_ACCESS) && BITS_PER_LONG == 64
>+#include <linux/dcache.h>
>+#include <asm/word-at-a-time.h>
>+#endif
>+
>+#define SIPROUND \
>+ do { \
>+ v0 += v1; v1 = rol64(v1, 13); v1 ^= v0; v0 = rol64(v0, 32); \
>+ v2 += v3; v3 = rol64(v3, 16); v3 ^= v2; \
>+ v0 += v3; v3 = rol64(v3, 21); v3 ^= v0; \
>+ v2 += v1; v1 = rol64(v1, 17); v1 ^= v2; v2 = rol64(v2, 32); \
>+ } while (0)
>+
>+#define PREAMBLE(len) \
>+ u64 v0 = 0x736f6d6570736575ULL; \
>+ u64 v1 = 0x646f72616e646f6dULL; \
>+ u64 v2 = 0x6c7967656e657261ULL; \
>+ u64 v3 = 0x7465646279746573ULL; \
>+ u64 b = ((u64)(len)) << 56; \
>+ v3 ^= key->key[1]; \
>+ v2 ^= key->key[0]; \
>+ v1 ^= key->key[1]; \
>+ v0 ^= key->key[0];
>+
>+#define POSTAMBLE \
>+ v3 ^= b; \
>+ SIPROUND; \
>+ SIPROUND; \
>+ v0 ^= b; \
>+ v2 ^= 0xff; \
>+ SIPROUND; \
>+ SIPROUND; \
>+ SIPROUND; \
>+ SIPROUND; \
>+ return (v0 ^ v1) ^ (v2 ^ v3);
>+
>+u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key)
>+{
>+ const u8 *end = data + len - (len % sizeof(u64));
>+ const u8 left = len & (sizeof(u64) - 1);
>+ u64 m;
>+ PREAMBLE(len)
>+ for (; data != end; data += sizeof(u64)) {
>+ m = le64_to_cpup(data);
>+ v3 ^= m;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= m;
>+ }
>+#if defined(CONFIG_DCACHE_WORD_ACCESS) && BITS_PER_LONG == 64
>+ if (left)
>+ b |= le64_to_cpu((__force __le64)(load_unaligned_zeropad(data) &
>+ bytemask_from_count(left)));
>+#else
>+ switch (left) {
>+ case 7: b |= ((u64)end[6]) << 48;
>+ case 6: b |= ((u64)end[5]) << 40;
>+ case 5: b |= ((u64)end[4]) << 32;
>+ case 4: b |= le32_to_cpup(data); break;
>+ case 3: b |= ((u64)end[2]) << 16;
>+ case 2: b |= le16_to_cpup(data); break;
>+ case 1: b |= end[0];
>+ }
>+#endif
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(__siphash_aligned);
>+
>+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
>+u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key)
>+{
>+ const u8 *end = data + len - (len % sizeof(u64));
>+ const u8 left = len & (sizeof(u64) - 1);
>+ u64 m;
>+ PREAMBLE(len)
>+ for (; data != end; data += sizeof(u64)) {
>+ m = get_unaligned_le64(data);
>+ v3 ^= m;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= m;
>+ }
>+#if defined(CONFIG_DCACHE_WORD_ACCESS) && BITS_PER_LONG == 64
>+ if (left)
>+ b |= le64_to_cpu((__force __le64)(load_unaligned_zeropad(data) &
>+ bytemask_from_count(left)));
>+#else
>+ switch (left) {
>+ case 7: b |= ((u64)end[6]) << 48;
>+ case 6: b |= ((u64)end[5]) << 40;
>+ case 5: b |= ((u64)end[4]) << 32;
>+ case 4: b |= get_unaligned_le32(end); break;
>+ case 3: b |= ((u64)end[2]) << 16;
>+ case 2: b |= get_unaligned_le16(end); break;
>+ case 1: b |= end[0];
>+ }
>+#endif
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(__siphash_unaligned);
>+#endif
>+
>+/**
>+ * siphash_1u64 - compute 64-bit siphash PRF value of a u64
>+ * @first: first u64
>+ * @key: the siphash key
>+ */
>+u64 siphash_1u64(const u64 first, const siphash_key_t *key)
>+{
>+ PREAMBLE(8)
>+ v3 ^= first;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= first;
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(siphash_1u64);
>+
>+/**
>+ * siphash_2u64 - compute 64-bit siphash PRF value of 2 u64
>+ * @first: first u64
>+ * @second: second u64
>+ * @key: the siphash key
>+ */
>+u64 siphash_2u64(const u64 first, const u64 second, const siphash_key_t *key)
>+{
>+ PREAMBLE(16)
>+ v3 ^= first;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= first;
>+ v3 ^= second;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= second;
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(siphash_2u64);
>+
>+/**
>+ * siphash_3u64 - compute 64-bit siphash PRF value of 3 u64
>+ * @first: first u64
>+ * @second: second u64
>+ * @third: third u64
>+ * @key: the siphash key
>+ */
>+u64 siphash_3u64(const u64 first, const u64 second, const u64 third,
>+ const siphash_key_t *key)
>+{
>+ PREAMBLE(24)
>+ v3 ^= first;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= first;
>+ v3 ^= second;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= second;
>+ v3 ^= third;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= third;
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(siphash_3u64);
>+
>+/**
>+ * siphash_4u64 - compute 64-bit siphash PRF value of 4 u64
>+ * @first: first u64
>+ * @second: second u64
>+ * @third: third u64
>+ * @forth: forth u64
>+ * @key: the siphash key
>+ */
>+u64 siphash_4u64(const u64 first, const u64 second, const u64 third,
>+ const u64 forth, const siphash_key_t *key)
>+{
>+ PREAMBLE(32)
>+ v3 ^= first;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= first;
>+ v3 ^= second;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= second;
>+ v3 ^= third;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= third;
>+ v3 ^= forth;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= forth;
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(siphash_4u64);
>+
>+u64 siphash_1u32(const u32 first, const siphash_key_t *key)
>+{
>+ PREAMBLE(4)
>+ b |= first;
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(siphash_1u32);
>+
>+u64 siphash_3u32(const u32 first, const u32 second, const u32 third,
>+ const siphash_key_t *key)
>+{
>+ u64 combined = (u64)second << 32 | first;
>+ PREAMBLE(12)
>+ v3 ^= combined;
>+ SIPROUND;
>+ SIPROUND;
>+ v0 ^= combined;
>+ b |= third;
>+ POSTAMBLE
>+}
>+EXPORT_SYMBOL(siphash_3u32);
>diff --git a/lib/string.c b/lib/string.c
>index 80e8bdb60538..94928426f511 100644
>--- a/lib/string.c
>+++ b/lib/string.c
>@@ -776,6 +776,26 @@ __visible int memcmp(const void *cs, const void *ct, size_t count)
> EXPORT_SYMBOL(memcmp);
> #endif
>
>+#ifndef __HAVE_ARCH_BCMP
>+/**
>+ * bcmp - returns 0 if and only if the buffers have identical contents.
>+ * @a: pointer to first buffer.
>+ * @b: pointer to second buffer.
>+ * @len: size of buffers.
>+ *
>+ * The sign or magnitude of a non-zero return value has no particular
>+ * meaning, and architectures may implement their own more efficient bcmp(). So
>+ * while this particular implementation is a simple (tail) call to memcmp, do
>+ * not rely on anything but whether the return value is zero or non-zero.
>+ */
>+#undef bcmp
>+int bcmp(const void *a, const void *b, size_t len)
>+{
>+ return memcmp(a, b, len);
>+}
>+EXPORT_SYMBOL(bcmp);
>+#endif
>+
> #ifndef __HAVE_ARCH_MEMSCAN
> /**
> * memscan - Find a character in an area of memory.
>diff --git a/lib/test_siphash.c b/lib/test_siphash.c
>new file mode 100644
>index 000000000000..d972acfc15e4
>--- /dev/null
>+++ b/lib/test_siphash.c
>@@ -0,0 +1,131 @@
>+/* Test cases for siphash.c
>+ *
>+ * Copyright (C) 2016 Jason A. Donenfeld <Jason@...c4.com>. All Rights Reserved.
>+ *
>+ * This file is provided under a dual BSD/GPLv2 license.
>+ *
>+ * SipHash: a fast short-input PRF
>+ * https://131002.net/siphash/
>+ *
>+ * This implementation is specifically for SipHash2-4.
>+ */
>+
>+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>+
>+#include <linux/siphash.h>
>+#include <linux/kernel.h>
>+#include <linux/string.h>
>+#include <linux/errno.h>
>+#include <linux/module.h>
>+
>+/* Test vectors taken from official reference source available at:
>+ * https://131002.net/siphash/siphash24.c
>+ */
>+
>+static const siphash_key_t test_key_siphash =
>+ {{ 0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL }};
>+
>+static const u64 test_vectors_siphash[64] = {
>+ 0x726fdb47dd0e0e31ULL, 0x74f839c593dc67fdULL, 0x0d6c8009d9a94f5aULL,
>+ 0x85676696d7fb7e2dULL, 0xcf2794e0277187b7ULL, 0x18765564cd99a68dULL,
>+ 0xcbc9466e58fee3ceULL, 0xab0200f58b01d137ULL, 0x93f5f5799a932462ULL,
>+ 0x9e0082df0ba9e4b0ULL, 0x7a5dbbc594ddb9f3ULL, 0xf4b32f46226bada7ULL,
>+ 0x751e8fbc860ee5fbULL, 0x14ea5627c0843d90ULL, 0xf723ca908e7af2eeULL,
>+ 0xa129ca6149be45e5ULL, 0x3f2acc7f57c29bdbULL, 0x699ae9f52cbe4794ULL,
>+ 0x4bc1b3f0968dd39cULL, 0xbb6dc91da77961bdULL, 0xbed65cf21aa2ee98ULL,
>+ 0xd0f2cbb02e3b67c7ULL, 0x93536795e3a33e88ULL, 0xa80c038ccd5ccec8ULL,
>+ 0xb8ad50c6f649af94ULL, 0xbce192de8a85b8eaULL, 0x17d835b85bbb15f3ULL,
>+ 0x2f2e6163076bcfadULL, 0xde4daaaca71dc9a5ULL, 0xa6a2506687956571ULL,
>+ 0xad87a3535c49ef28ULL, 0x32d892fad841c342ULL, 0x7127512f72f27cceULL,
>+ 0xa7f32346f95978e3ULL, 0x12e0b01abb051238ULL, 0x15e034d40fa197aeULL,
>+ 0x314dffbe0815a3b4ULL, 0x027990f029623981ULL, 0xcadcd4e59ef40c4dULL,
>+ 0x9abfd8766a33735cULL, 0x0e3ea96b5304a7d0ULL, 0xad0c42d6fc585992ULL,
>+ 0x187306c89bc215a9ULL, 0xd4a60abcf3792b95ULL, 0xf935451de4f21df2ULL,
>+ 0xa9538f0419755787ULL, 0xdb9acddff56ca510ULL, 0xd06c98cd5c0975ebULL,
>+ 0xe612a3cb9ecba951ULL, 0xc766e62cfcadaf96ULL, 0xee64435a9752fe72ULL,
>+ 0xa192d576b245165aULL, 0x0a8787bf8ecb74b2ULL, 0x81b3e73d20b49b6fULL,
>+ 0x7fa8220ba3b2eceaULL, 0x245731c13ca42499ULL, 0xb78dbfaf3a8d83bdULL,
>+ 0xea1ad565322a1a0bULL, 0x60e61c23a3795013ULL, 0x6606d7e446282b93ULL,
>+ 0x6ca4ecb15c5f91e1ULL, 0x9f626da15c9625f3ULL, 0xe51b38608ef25f57ULL,
>+ 0x958a324ceb064572ULL
>+};
>+
>+static int __init siphash_test_init(void)
>+{
>+ u8 in[64] __aligned(SIPHASH_ALIGNMENT);
>+ u8 in_unaligned[65] __aligned(SIPHASH_ALIGNMENT);
>+ u8 i;
>+ int ret = 0;
>+
>+ for (i = 0; i < 64; ++i) {
>+ in[i] = i;
>+ in_unaligned[i + 1] = i;
>+ if (siphash(in, i, &test_key_siphash) !=
>+ test_vectors_siphash[i]) {
>+ pr_info("siphash self-test aligned %u: FAIL\n", i + 1);
>+ ret = -EINVAL;
>+ }
>+ if (siphash(in_unaligned + 1, i, &test_key_siphash) !=
>+ test_vectors_siphash[i]) {
>+ pr_info("siphash self-test unaligned %u: FAIL\n", i + 1);
>+ ret = -EINVAL;
>+ }
>+ }
>+ if (siphash_1u64(0x0706050403020100ULL, &test_key_siphash) !=
>+ test_vectors_siphash[8]) {
>+ pr_info("siphash self-test 1u64: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_2u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
>+ &test_key_siphash) != test_vectors_siphash[16]) {
>+ pr_info("siphash self-test 2u64: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_3u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
>+ 0x1716151413121110ULL, &test_key_siphash) !=
>+ test_vectors_siphash[24]) {
>+ pr_info("siphash self-test 3u64: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_4u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
>+ 0x1716151413121110ULL, 0x1f1e1d1c1b1a1918ULL,
>+ &test_key_siphash) != test_vectors_siphash[32]) {
>+ pr_info("siphash self-test 4u64: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_1u32(0x03020100U, &test_key_siphash) !=
>+ test_vectors_siphash[4]) {
>+ pr_info("siphash self-test 1u32: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_2u32(0x03020100U, 0x07060504U, &test_key_siphash) !=
>+ test_vectors_siphash[8]) {
>+ pr_info("siphash self-test 2u32: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_3u32(0x03020100U, 0x07060504U,
>+ 0x0b0a0908U, &test_key_siphash) !=
>+ test_vectors_siphash[12]) {
>+ pr_info("siphash self-test 3u32: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (siphash_4u32(0x03020100U, 0x07060504U,
>+ 0x0b0a0908U, 0x0f0e0d0cU, &test_key_siphash) !=
>+ test_vectors_siphash[16]) {
>+ pr_info("siphash self-test 4u32: FAIL\n");
>+ ret = -EINVAL;
>+ }
>+ if (!ret)
>+ pr_info("self-tests: pass\n");
>+ return ret;
>+}
>+
>+static void __exit siphash_test_exit(void)
>+{
>+}
>+
>+module_init(siphash_test_init);
>+module_exit(siphash_test_exit);
>+
>+MODULE_AUTHOR("Jason A. Donenfeld <Jason@...c4.com>");
>+MODULE_LICENSE("Dual BSD/GPL");
>diff --git a/mm/page_alloc.c b/mm/page_alloc.c
>index 7a783dc67305..b491f75f7491 100644
>--- a/mm/page_alloc.c
>+++ b/mm/page_alloc.c
>@@ -3072,6 +3072,49 @@ static inline void show_node(struct zone *zone)
> printk("Node %d ", zone_to_nid(zone));
> }
>
>+long si_mem_available(void)
>+{
>+ long available;
>+ unsigned long pagecache;
>+ unsigned long wmark_low = 0;
>+ unsigned long pages[NR_LRU_LISTS];
>+ struct zone *zone;
>+ int lru;
>+
>+ for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
>+ pages[lru] = global_page_state(NR_LRU_BASE + lru);
>+
>+ for_each_zone(zone)
>+ wmark_low += zone->watermark[WMARK_LOW];
>+
>+ /*
>+ * Estimate the amount of memory available for userspace allocations,
>+ * without causing swapping.
>+ */
>+ available = global_page_state(NR_FREE_PAGES) - totalreserve_pages;
>+
>+ /*
>+ * Not all the page cache can be freed, otherwise the system will
>+ * start swapping. Assume at least half of the page cache, or the
>+ * low watermark worth of cache, needs to stay.
>+ */
>+ pagecache = pages[LRU_ACTIVE_FILE] + pages[LRU_INACTIVE_FILE];
>+ pagecache -= min(pagecache / 2, wmark_low);
>+ available += pagecache;
>+
>+ /*
>+ * Part of the reclaimable slab consists of items that are in use,
>+ * and cannot be freed. Cap this estimate at the low watermark.
>+ */
>+ available += global_page_state(NR_SLAB_RECLAIMABLE) -
>+ min(global_page_state(NR_SLAB_RECLAIMABLE) / 2, wmark_low);
>+
>+ if (available < 0)
>+ available = 0;
>+ return available;
>+}
>+EXPORT_SYMBOL_GPL(si_mem_available);
>+
> void si_meminfo(struct sysinfo *val)
> {
> val->totalram = totalram_pages;
>diff --git a/mm/vmstat.c b/mm/vmstat.c
>index ae3c911843fa..8272a99dce41 100644
>--- a/mm/vmstat.c
>+++ b/mm/vmstat.c
>@@ -861,13 +861,8 @@ const char * const vmstat_text[] = {
> "thp_zero_page_alloc_failed",
> #endif
> #ifdef CONFIG_DEBUG_TLBFLUSH
>-#ifdef CONFIG_SMP
> "nr_tlb_remote_flush",
> "nr_tlb_remote_flush_received",
>-#else
>- "", /* nr_tlb_remote_flush */
>- "", /* nr_tlb_remote_flush_received */
>-#endif /* CONFIG_SMP */
> "nr_tlb_local_flush_all",
> "nr_tlb_local_flush_one",
> #endif /* CONFIG_DEBUG_TLBFLUSH */
>diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
>index 335401d6351c..2a1611e65904 100644
>--- a/net/batman-adv/bridge_loop_avoidance.c
>+++ b/net/batman-adv/bridge_loop_avoidance.c
>@@ -677,6 +677,8 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
> const uint8_t *mac, const unsigned short vid)
> {
> struct batadv_bla_claim search_claim, *claim;
>+ struct batadv_bla_claim *claim_removed_entry;
>+ struct hlist_node *claim_removed_node;
>
> ether_addr_copy(search_claim.addr, mac);
> search_claim.vid = vid;
>@@ -687,10 +689,18 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
> batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
> mac, BATADV_PRINT_VID(vid));
>
>- batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
>- batadv_choose_claim, claim);
>- batadv_claim_free_ref(claim); /* reference from the hash is gone */
>+ claim_removed_node = batadv_hash_remove(bat_priv->bla.claim_hash,
>+ batadv_compare_claim,
>+ batadv_choose_claim, claim);
>+ if (!claim_removed_node)
>+ goto free_claim;
>
>+ /* reference from the hash is gone */
>+ claim_removed_entry = hlist_entry(claim_removed_node,
>+ struct batadv_bla_claim, hash_entry);
>+ batadv_claim_free_ref(claim_removed_entry);
>+
>+free_claim:
> /* don't need the reference from hash_find() anymore */
> batadv_claim_free_ref(claim);
> }
>diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
>index c9ac7d948a21..422d54f6a243 100644
>--- a/net/batman-adv/translation-table.c
>+++ b/net/batman-adv/translation-table.c
>@@ -483,14 +483,26 @@ static void batadv_tt_global_free(struct batadv_priv *bat_priv,
> struct batadv_tt_global_entry *tt_global,
> const char *message)
> {
>+ struct batadv_tt_global_entry *tt_removed_entry;
>+ struct hlist_node *tt_removed_node;
>+
> batadv_dbg(BATADV_DBG_TT, bat_priv,
> "Deleting global tt entry %pM (vid: %d): %s\n",
> tt_global->common.addr,
> BATADV_PRINT_VID(tt_global->common.vid), message);
>
>- batadv_hash_remove(bat_priv->tt.global_hash, batadv_compare_tt,
>- batadv_choose_tt, &tt_global->common);
>- batadv_tt_global_entry_free_ref(tt_global);
>+ tt_removed_node = batadv_hash_remove(bat_priv->tt.global_hash,
>+ batadv_compare_tt,
>+ batadv_choose_tt,
>+ &tt_global->common);
>+ if (!tt_removed_node)
>+ return;
>+
>+ /* drop reference of remove hash entry */
>+ tt_removed_entry = hlist_entry(tt_removed_node,
>+ struct batadv_tt_global_entry,
>+ common.hash_entry);
>+ batadv_tt_global_entry_free_ref(tt_removed_entry);
> }
>
> /**
>@@ -1021,9 +1033,10 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
> const uint8_t *addr, unsigned short vid,
> const char *message, bool roaming)
> {
>+ struct batadv_tt_local_entry *tt_removed_entry;
> struct batadv_tt_local_entry *tt_local_entry;
> uint16_t flags, curr_flags = BATADV_NO_FLAGS;
>- void *tt_entry_exists;
>+ struct hlist_node *tt_removed_node;
>
> tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid);
> if (!tt_local_entry)
>@@ -1052,15 +1065,18 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
> */
> batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
>
>- tt_entry_exists = batadv_hash_remove(bat_priv->tt.local_hash,
>+ tt_removed_node = batadv_hash_remove(bat_priv->tt.local_hash,
> batadv_compare_tt,
> batadv_choose_tt,
> &tt_local_entry->common);
>- if (!tt_entry_exists)
>+ if (!tt_removed_node)
> goto out;
>
>- /* extra call to free the local tt entry */
>- batadv_tt_local_entry_free_ref(tt_local_entry);
>+ /* drop reference of remove hash entry */
>+ tt_removed_entry = hlist_entry(tt_removed_node,
>+ struct batadv_tt_local_entry,
>+ common.hash_entry);
>+ batadv_tt_local_entry_free_ref(tt_removed_entry);
>
> out:
> if (tt_local_entry)
>diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
>index 3c594185de36..7725dd99fdc6 100644
>--- a/net/bridge/br_multicast.c
>+++ b/net/bridge/br_multicast.c
>@@ -2036,7 +2036,8 @@ static void br_multicast_start_querier(struct net_bridge *br,
>
> __br_multicast_open(br, query);
>
>- list_for_each_entry(port, &br->port_list, list) {
>+ rcu_read_lock();
>+ list_for_each_entry_rcu(port, &br->port_list, list) {
> if (port->state == BR_STATE_DISABLED ||
> port->state == BR_STATE_BLOCKING)
> continue;
>@@ -2048,6 +2049,7 @@ static void br_multicast_start_querier(struct net_bridge *br,
> br_multicast_enable(&port->ip6_own_query);
> #endif
> }
>+ rcu_read_unlock();
> }
>
> int br_multicast_toggle(struct net_bridge *br, unsigned long val)
>diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
>index 2cf4e30ac41a..7ddb8b322556 100644
>--- a/net/bridge/br_netfilter.c
>+++ b/net/bridge/br_netfilter.c
>@@ -659,6 +659,8 @@ static unsigned int br_nf_pre_routing_ipv6(const struct nf_hook_ops *ops,
> return NF_DROP;
>
> skb->protocol = htons(ETH_P_IPV6);
>+ skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
>+
> NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, skb, skb->dev, NULL,
> br_nf_pre_routing_finish_ipv6);
>
>@@ -715,6 +717,7 @@ static unsigned int br_nf_pre_routing(const struct nf_hook_ops *ops,
> return NF_DROP;
> store_orig_dstaddr(skb);
> skb->protocol = htons(ETH_P_IP);
>+ skb->transport_header = skb->network_header + ip_hdr(skb)->ihl * 4;
>
> NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, skb, skb->dev, NULL,
> br_nf_pre_routing_finish);
>diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
>index 2df71bc7959d..75929f9bd4e6 100644
>--- a/net/bridge/netfilter/ebtables.c
>+++ b/net/bridge/netfilter/ebtables.c
>@@ -2011,7 +2011,8 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
> if (match_kern)
> match_kern->match_size = ret;
>
>- if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
>+ /* rule should have no remaining data after target */
>+ if (type == EBT_COMPAT_TARGET && size_left)
> return -EINVAL;
>
> match32 = (struct compat_ebt_entry_mwt *) buf;
>diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
>index cd332d0fa930..7550d098e3b7 100644
>--- a/net/core/net-sysfs.c
>+++ b/net/core/net-sysfs.c
>@@ -788,6 +788,8 @@ static int rx_queue_add_kobject(struct net_device *net, int index)
> if (error)
> return error;
>
>+ dev_hold(queue->dev);
>+
> if (net->sysfs_rx_queue_group) {
> error = sysfs_create_group(kobj, net->sysfs_rx_queue_group);
> if (error) {
>@@ -797,7 +799,6 @@ static int rx_queue_add_kobject(struct net_device *net, int index)
> }
>
> kobject_uevent(kobj, KOBJ_ADD);
>- dev_hold(queue->dev);
>
> return error;
> }
>@@ -1146,6 +1147,8 @@ static int netdev_queue_add_kobject(struct net_device *net, int index)
> if (error)
> return error;
>
>+ dev_hold(queue->dev);
>+
> #ifdef CONFIG_BQL
> error = sysfs_create_group(kobj, &dql_group);
> if (error) {
>@@ -1155,7 +1158,6 @@ static int netdev_queue_add_kobject(struct net_device *net, int index)
> #endif
>
> kobject_uevent(kobj, KOBJ_ADD);
>- dev_hold(queue->dev);
>
> return 0;
> }
>diff --git a/net/dccp/feat.c b/net/dccp/feat.c
>index 9733ddbc96cb..fa99d53f29e5 100644
>--- a/net/dccp/feat.c
>+++ b/net/dccp/feat.c
>@@ -738,7 +738,12 @@ static int __feat_register_sp(struct list_head *fn, u8 feat, u8 is_local,
> if (dccp_feat_clone_sp_val(&fval, sp_val, sp_len))
> return -ENOMEM;
>
>- return dccp_feat_push_change(fn, feat, is_local, mandatory, &fval);
>+ if (dccp_feat_push_change(fn, feat, is_local, mandatory, &fval)) {
>+ kfree(fval.sp.vec);
>+ return -ENOMEM;
>+ }
>+
>+ return 0;
> }
>
> /**
>diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
>index 30455bf91b18..c3ed865d262f 100644
>--- a/net/dccp/ipv6.c
>+++ b/net/dccp/ipv6.c
>@@ -491,8 +491,8 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
> newnp->ipv6_mc_list = NULL;
> newnp->ipv6_ac_list = NULL;
> newnp->ipv6_fl_list = NULL;
>- newnp->mcast_oif = inet6_iif(skb);
>- newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
>+ newnp->mcast_oif = inet_iif(skb);
>+ newnp->mcast_hops = ip_hdr(skb)->ttl;
>
> /*
> * No need to charge this sock to the relevant IPv6 refcnt debug socks count
>diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
>index 48444c4c3c51..680ce5f4fb65 100644
>--- a/net/ipv4/igmp.c
>+++ b/net/ipv4/igmp.c
>@@ -395,7 +395,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, unsigned int mtu)
>
> pip->protocol = IPPROTO_IGMP;
> pip->tot_len = 0; /* filled in later */
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(net, skb, NULL);
> ((u8 *)&pip[1])[0] = IPOPT_RA;
> ((u8 *)&pip[1])[1] = 4;
> ((u8 *)&pip[1])[2] = 0;
>@@ -739,7 +739,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
> iph->daddr = dst;
> iph->saddr = fl4.saddr;
> iph->protocol = IPPROTO_IGMP;
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(net, skb, NULL);
> ((u8 *)&iph[1])[0] = IPOPT_RA;
> ((u8 *)&iph[1])[1] = 4;
> ((u8 *)&iph[1])[2] = 0;
>diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
>index 109eddf0248a..2a05dfc9a35e 100644
>--- a/net/ipv4/ip_output.c
>+++ b/net/ipv4/ip_output.c
>@@ -150,7 +150,7 @@ int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
> iph->daddr = (opt && opt->opt.srr ? opt->opt.faddr : daddr);
> iph->saddr = saddr;
> iph->protocol = sk->sk_protocol;
>- ip_select_ident(skb, sk);
>+ ip_select_ident(sock_net(sk), skb, sk);
>
> if (opt && opt->opt.optlen) {
> iph->ihl += opt->opt.optlen>>2;
>@@ -432,7 +432,8 @@ int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl)
> ip_options_build(skb, &inet_opt->opt, inet->inet_daddr, rt, 0);
> }
>
>- ip_select_ident_segs(skb, sk, skb_shinfo(skb)->gso_segs ?: 1);
>+ ip_select_ident_segs(sock_net(sk), skb, sk,
>+ skb_shinfo(skb)->gso_segs ?: 1);
>
> /* TODO : should we use skb->sk here instead of sk ? */
> skb->priority = sk->sk_priority;
>@@ -1385,7 +1386,7 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
> iph->ttl = ttl;
> iph->protocol = sk->sk_protocol;
> ip_copy_addrs(iph, fl4);
>- ip_select_ident(skb, sk);
>+ ip_select_ident(net, skb, sk);
>
> if (opt) {
> iph->ihl += opt->optlen>>2;
>diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
>index 88c386cf7d85..ce63ab21b6cd 100644
>--- a/net/ipv4/ip_tunnel_core.c
>+++ b/net/ipv4/ip_tunnel_core.c
>@@ -74,7 +74,8 @@ int iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
> iph->daddr = dst;
> iph->saddr = src;
> iph->ttl = ttl;
>- __ip_select_ident(iph, skb_shinfo(skb)->gso_segs ?: 1);
>+ __ip_select_ident(dev_net(rt->dst.dev), iph,
>+ skb_shinfo(skb)->gso_segs ?: 1);
>
> err = ip_local_out_sk(sk, skb);
> if (unlikely(net_xmit_eval(err)))
>diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
>index 643ec0bb80a5..5859c0f5bd41 100644
>--- a/net/ipv4/ipmr.c
>+++ b/net/ipv4/ipmr.c
>@@ -1647,7 +1647,8 @@ static struct notifier_block ip_mr_notifier = {
> * important for multicast video.
> */
>
>-static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
>+static void ip_encap(struct net *net, struct sk_buff *skb,
>+ __be32 saddr, __be32 daddr)
> {
> struct iphdr *iph;
> const struct iphdr *old_iph = ip_hdr(skb);
>@@ -1666,7 +1667,7 @@ static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
> iph->protocol = IPPROTO_IPIP;
> iph->ihl = 5;
> iph->tot_len = htons(skb->len);
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(net, skb, NULL);
> ip_send_check(iph);
>
> memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
>@@ -1763,7 +1764,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
> * What do we do with netfilter? -- RR
> */
> if (vif->flags & VIFF_TUNNEL) {
>- ip_encap(skb, vif->local, vif->remote);
>+ ip_encap(net, skb, vif->local, vif->remote);
> /* FIXME: extra output firewall step used to be here. --RR */
> vif->dev->stats.tx_packets++;
> vif->dev->stats.tx_bytes += skb->len;
>diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
>index e43a585abb35..04700c745ca0 100644
>--- a/net/ipv4/raw.c
>+++ b/net/ipv4/raw.c
>@@ -399,7 +399,7 @@ static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4,
> iph->check = 0;
> iph->tot_len = htons(length);
> if (!iph->id)
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(net, skb, NULL);
>
> iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
> }
>diff --git a/net/ipv4/route.c b/net/ipv4/route.c
>index 660848116761..858596c80e0e 100644
>--- a/net/ipv4/route.c
>+++ b/net/ipv4/route.c
>@@ -484,19 +484,19 @@ u32 ip_idents_reserve(u32 hash, int segs)
> }
> EXPORT_SYMBOL(ip_idents_reserve);
>
>-void __ip_select_ident(struct iphdr *iph, int segs)
>+void __ip_select_ident(struct net *net, struct iphdr *iph, int segs)
> {
>- static u32 ip_idents_hashrnd __read_mostly;
>- static u32 ip_idents_hashrnd_extra __read_mostly;
> u32 hash, id;
>
>- net_get_random_once(&ip_idents_hashrnd, sizeof(ip_idents_hashrnd));
>- net_get_random_once(&ip_idents_hashrnd_extra, sizeof(ip_idents_hashrnd_extra));
>+ /* Note the following code is not safe, but this is okay. */
>+ if (unlikely(siphash_key_is_zero(&net->ipv4.ip_id_key)))
>+ get_random_bytes(&net->ipv4.ip_id_key,
>+ sizeof(net->ipv4.ip_id_key));
>
>- hash = jhash_3words((__force u32)iph->daddr,
>+ hash = siphash_3u32((__force u32)iph->daddr,
> (__force u32)iph->saddr,
>- iph->protocol ^ ip_idents_hashrnd_extra,
>- ip_idents_hashrnd);
>+ iph->protocol,
>+ &net->ipv4.ip_id_key);
> id = ip_idents_reserve(hash, segs);
> iph->id = htons(id);
> }
>diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
>index 91771a7c802f..35feda676464 100644
>--- a/net/ipv4/xfrm4_mode_tunnel.c
>+++ b/net/ipv4/xfrm4_mode_tunnel.c
>@@ -63,7 +63,7 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
>
> top_iph->saddr = x->props.saddr.a4;
> top_iph->daddr = x->id.daddr.a4;
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(dev_net(dst->dev), skb, NULL);
>
> return 0;
> }
>diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
>index 3a4c1f93023a..1b99e1406186 100644
>--- a/net/ipv4/xfrm4_policy.c
>+++ b/net/ipv4/xfrm4_policy.c
>@@ -103,7 +103,8 @@ static void
> _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
> {
> const struct iphdr *iph = ip_hdr(skb);
>- u8 *xprth = skb_network_header(skb) + iph->ihl * 4;
>+ int ihl = iph->ihl;
>+ u8 *xprth = skb_network_header(skb) + ihl * 4;
> struct flowi4 *fl4 = &fl->u.ip4;
> int oif = 0;
>
>@@ -114,6 +115,11 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
> fl4->flowi4_mark = skb->mark;
> fl4->flowi4_oif = reverse ? skb->skb_iif : oif;
>
>+ fl4->flowi4_proto = iph->protocol;
>+ fl4->daddr = reverse ? iph->saddr : iph->daddr;
>+ fl4->saddr = reverse ? iph->daddr : iph->saddr;
>+ fl4->flowi4_tos = iph->tos;
>+
> if (!ip_is_fragment(iph)) {
> switch (iph->protocol) {
> case IPPROTO_UDP:
>@@ -123,7 +129,10 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
> case IPPROTO_DCCP:
> if (xprth + 4 < skb->data ||
> pskb_may_pull(skb, xprth + 4 - skb->data)) {
>- __be16 *ports = (__be16 *)xprth;
>+ __be16 *ports;
>+
>+ xprth = skb_network_header(skb) + ihl * 4;
>+ ports = (__be16 *)xprth;
>
> fl4->fl4_sport = ports[!!reverse];
> fl4->fl4_dport = ports[!reverse];
>@@ -131,8 +140,12 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
> break;
>
> case IPPROTO_ICMP:
>- if (pskb_may_pull(skb, xprth + 2 - skb->data)) {
>- u8 *icmp = xprth;
>+ if (xprth + 2 < skb->data ||
>+ pskb_may_pull(skb, xprth + 2 - skb->data)) {
>+ u8 *icmp;
>+
>+ xprth = skb_network_header(skb) + ihl * 4;
>+ icmp = xprth;
>
> fl4->fl4_icmp_type = icmp[0];
> fl4->fl4_icmp_code = icmp[1];
>@@ -140,33 +153,50 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
> break;
>
> case IPPROTO_ESP:
>- if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
>- __be32 *ehdr = (__be32 *)xprth;
>+ if (xprth + 4 < skb->data ||
>+ pskb_may_pull(skb, xprth + 4 - skb->data)) {
>+ __be32 *ehdr;
>+
>+ xprth = skb_network_header(skb) + ihl * 4;
>+ ehdr = (__be32 *)xprth;
>
> fl4->fl4_ipsec_spi = ehdr[0];
> }
> break;
>
> case IPPROTO_AH:
>- if (pskb_may_pull(skb, xprth + 8 - skb->data)) {
>- __be32 *ah_hdr = (__be32 *)xprth;
>+ if (xprth + 8 < skb->data ||
>+ pskb_may_pull(skb, xprth + 8 - skb->data)) {
>+ __be32 *ah_hdr;
>+
>+ xprth = skb_network_header(skb) + ihl * 4;
>+ ah_hdr = (__be32 *)xprth;
>
> fl4->fl4_ipsec_spi = ah_hdr[1];
> }
> break;
>
> case IPPROTO_COMP:
>- if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
>- __be16 *ipcomp_hdr = (__be16 *)xprth;
>+ if (xprth + 4 < skb->data ||
>+ pskb_may_pull(skb, xprth + 4 - skb->data)) {
>+ __be16 *ipcomp_hdr;
>+
>+ xprth = skb_network_header(skb) + ihl * 4;
>+ ipcomp_hdr = (__be16 *)xprth;
>
> fl4->fl4_ipsec_spi = htonl(ntohs(ipcomp_hdr[1]));
> }
> break;
>
> case IPPROTO_GRE:
>- if (pskb_may_pull(skb, xprth + 12 - skb->data)) {
>- __be16 *greflags = (__be16 *)xprth;
>- __be32 *gre_hdr = (__be32 *)xprth;
>+ if (xprth + 12 < skb->data ||
>+ pskb_may_pull(skb, xprth + 12 - skb->data)) {
>+ __be16 *greflags;
>+ __be32 *gre_hdr;
>+
>+ xprth = skb_network_header(skb) + ihl * 4;
>+ greflags = (__be16 *)xprth;
>+ gre_hdr = (__be32 *)xprth;
>
> if (greflags[0] & GRE_KEY) {
> if (greflags[0] & GRE_CSUM)
>@@ -181,10 +211,6 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
> break;
> }
> }
>- fl4->flowi4_proto = iph->protocol;
>- fl4->daddr = reverse ? iph->saddr : iph->daddr;
>- fl4->saddr = reverse ? iph->daddr : iph->saddr;
>- fl4->flowi4_tos = iph->tos;
> }
>
> static inline int xfrm4_garbage_collect(struct dst_ops *ops)
>diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
>index f40ba684d69b..d8e8008aa7a4 100644
>--- a/net/ipv6/ip6_flowlabel.c
>+++ b/net/ipv6/ip6_flowlabel.c
>@@ -94,16 +94,22 @@ static struct ip6_flowlabel *fl_lookup(struct net *net, __be32 label)
> return fl;
> }
>
>+static void fl_free_rcu(struct rcu_head *head)
>+{
>+ struct ip6_flowlabel *fl = container_of(head, struct ip6_flowlabel, rcu);
>+
>+ if (fl->share == IPV6_FL_S_PROCESS)
>+ put_pid(fl->owner.pid);
>+ release_net(fl->fl_net);
>+ kfree(fl->opt);
>+ kfree(fl);
>+}
>+
>
> static void fl_free(struct ip6_flowlabel *fl)
> {
>- if (fl) {
>- if (fl->share == IPV6_FL_S_PROCESS)
>- put_pid(fl->owner.pid);
>- release_net(fl->fl_net);
>- kfree(fl->opt);
>- kfree_rcu(fl, rcu);
>- }
>+ if (fl)
>+ call_rcu(&fl->rcu, fl_free_rcu);
> }
>
> static void fl_release(struct ip6_flowlabel *fl)
>@@ -630,9 +636,9 @@ int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen)
> if (fl1->share == IPV6_FL_S_EXCL ||
> fl1->share != fl->share ||
> ((fl1->share == IPV6_FL_S_PROCESS) &&
>- (fl1->owner.pid == fl->owner.pid)) ||
>+ (fl1->owner.pid != fl->owner.pid)) ||
> ((fl1->share == IPV6_FL_S_USER) &&
>- uid_eq(fl1->owner.uid, fl->owner.uid)))
>+ !uid_eq(fl1->owner.uid, fl->owner.uid)))
> goto release;
>
> err = -ENOMEM;
>diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
>index bb98cde51476..1e68db035daf 100644
>--- a/net/ipv6/ip6_output.c
>+++ b/net/ipv6/ip6_output.c
>@@ -538,23 +538,6 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
> skb_copy_secmark(to, from);
> }
>
>-static void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
>-{
>- static u32 ip6_idents_hashrnd __read_mostly;
>- static u32 ip6_idents_hashrnd_extra __read_mostly;
>- u32 hash, id;
>-
>- net_get_random_once(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
>- net_get_random_once(&ip6_idents_hashrnd_extra, sizeof(ip6_idents_hashrnd_extra));
>-
>- hash = __ipv6_addr_jhash(&rt->rt6i_dst.addr, ip6_idents_hashrnd);
>- hash = __ipv6_addr_jhash(&rt->rt6i_src.addr, hash);
>- hash = jhash_1word(hash, ip6_idents_hashrnd_extra);
>-
>- id = ip_idents_reserve(hash, 1);
>- fhdr->identification = htonl(id);
>-}
>-
> int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
> {
> struct sk_buff *frag;
>@@ -649,7 +632,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
> skb_reset_network_header(skb);
> memcpy(skb_network_header(skb), tmp_hdr, hlen);
>
>- ipv6_select_ident(fh, rt);
>+ ipv6_select_ident(net, fh, rt);
> fh->nexthdr = nexthdr;
> fh->reserved = 0;
> fh->frag_off = htons(IP6_MF);
>@@ -802,7 +785,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
> fh->nexthdr = nexthdr;
> fh->reserved = 0;
> if (!frag_id) {
>- ipv6_select_ident(fh, rt);
>+ ipv6_select_ident(net, fh, rt);
> frag_id = fh->identification;
> } else
> fh->identification = frag_id;
>@@ -1096,7 +1079,7 @@ static inline int ip6_ufo_append_data(struct sock *sk,
> skb_shinfo(skb)->gso_size = (mtu - fragheaderlen -
> sizeof(struct frag_hdr)) & ~7;
> skb_shinfo(skb)->gso_type = SKB_GSO_UDP;
>- ipv6_select_ident(&fhdr, rt);
>+ ipv6_select_ident(sock_net(sk), &fhdr, rt);
> skb_shinfo(skb)->ip6_frag_id = fhdr.identification;
>
> append:
>diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
>index 42978998534c..5733b05558a5 100644
>--- a/net/ipv6/ip6mr.c
>+++ b/net/ipv6/ip6mr.c
>@@ -1662,6 +1662,10 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
> struct net *net = sock_net(sk);
> struct mr6_table *mrt;
>
>+ if (sk->sk_type != SOCK_RAW ||
>+ inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
>+ return -EOPNOTSUPP;
>+
> mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
> if (mrt == NULL)
> return -ENOENT;
>@@ -1673,9 +1677,6 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
>
> switch (optname) {
> case MRT6_INIT:
>- if (sk->sk_type != SOCK_RAW ||
>- inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
>- return -EOPNOTSUPP;
> if (optlen < sizeof(int))
> return -EINVAL;
>
>@@ -1812,6 +1813,10 @@ int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval,
> struct net *net = sock_net(sk);
> struct mr6_table *mrt;
>
>+ if (sk->sk_type != SOCK_RAW ||
>+ inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
>+ return -EOPNOTSUPP;
>+
> mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
> if (mrt == NULL)
> return -ENOENT;
>diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
>index e32c1ff35f78..a8274abad231 100644
>--- a/net/ipv6/output_core.c
>+++ b/net/ipv6/output_core.c
>@@ -9,6 +9,36 @@
> #include <net/addrconf.h>
> #include <net/secure_seq.h>
>
>+static u32 __ipv6_select_ident(struct net *net,
>+ struct in6_addr *dst, struct in6_addr *src)
>+{
>+ const struct {
>+ struct in6_addr dst;
>+ struct in6_addr src;
>+ } __aligned(SIPHASH_ALIGNMENT) combined = {
>+ .dst = *dst,
>+ .src = *src,
>+ };
>+ u32 hash, id;
>+
>+ /* Note the following code is not safe, but this is okay. */
>+ if (unlikely(siphash_key_is_zero(&net->ipv4.ip_id_key)))
>+ get_random_bytes(&net->ipv4.ip_id_key,
>+ sizeof(net->ipv4.ip_id_key));
>+
>+ hash = siphash(&combined, sizeof(combined), &net->ipv4.ip_id_key);
>+
>+ /* Treat id of 0 as unset and if we get 0 back from ip_idents_reserve,
>+ * set the hight order instead thus minimizing possible future
>+ * collisions.
>+ */
>+ id = ip_idents_reserve(hash, 1);
>+ if (unlikely(!id))
>+ id = 1 << 31;
>+
>+ return id;
>+}
>+
> /* This function exists only for tap drivers that must support broken
> * clients requesting UFO without specifying an IPv6 fragment ID.
> *
>@@ -17,12 +47,11 @@
> *
> * The network header must be set before calling this.
> */
>-void ipv6_proxy_select_ident(struct sk_buff *skb)
>+void ipv6_proxy_select_ident(struct net *net, struct sk_buff *skb)
> {
>- static u32 ip6_proxy_idents_hashrnd __read_mostly;
> struct in6_addr buf[2];
> struct in6_addr *addrs;
>- u32 hash, id;
>+ u32 id;
>
> addrs = skb_header_pointer(skb,
> skb_network_offset(skb) +
>@@ -31,17 +60,21 @@ void ipv6_proxy_select_ident(struct sk_buff *skb)
> if (!addrs)
> return;
>
>- net_get_random_once(&ip6_proxy_idents_hashrnd,
>- sizeof(ip6_proxy_idents_hashrnd));
>-
>- hash = __ipv6_addr_jhash(&addrs[1], ip6_proxy_idents_hashrnd);
>- hash = __ipv6_addr_jhash(&addrs[0], hash);
>-
>- id = ip_idents_reserve(hash, 1);
>+ id = __ipv6_select_ident(net, &addrs[1], &addrs[0]);
> skb_shinfo(skb)->ip6_frag_id = htonl(id);
> }
> EXPORT_SYMBOL_GPL(ipv6_proxy_select_ident);
>
>+void ipv6_select_ident(struct net *net, struct frag_hdr *fhdr,
>+ struct rt6_info *rt)
>+{
>+ u32 id;
>+
>+ id = __ipv6_select_ident(net, &rt->rt6i_dst.addr, &rt->rt6i_src.addr);
>+ fhdr->identification = htonl(id);
>+}
>+EXPORT_SYMBOL(ipv6_select_ident);
>+
> int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
> {
> unsigned int offset = sizeof(struct ipv6hdr);
>diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
>index 70a0f92cbbc0..4370371e0aa6 100644
>--- a/net/ipv6/tcp_ipv6.c
>+++ b/net/ipv6/tcp_ipv6.c
>@@ -1183,11 +1183,11 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
> newnp->ipv6_fl_list = NULL;
> newnp->pktoptions = NULL;
> newnp->opt = NULL;
>- newnp->mcast_oif = inet6_iif(skb);
>- newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
>- newnp->rcv_flowinfo = ip6_flowinfo(ipv6_hdr(skb));
>+ newnp->mcast_oif = inet_iif(skb);
>+ newnp->mcast_hops = ip_hdr(skb)->ttl;
>+ newnp->rcv_flowinfo = 0;
> if (np->repflow)
>- newnp->flow_label = ip6_flowlabel(ipv6_hdr(skb));
>+ newnp->flow_label = 0;
>
> /*
> * No need to charge this sock to the relevant IPv6 refcnt debug socks count
>diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
>index fa9ea1a72f99..28d02353743f 100644
>--- a/net/ipv6/udp_offload.c
>+++ b/net/ipv6/udp_offload.c
>@@ -75,6 +75,10 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
>
> skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
>
>+ /* Set the IPv6 fragment id if not set yet */
>+ if (!skb_shinfo(skb)->ip6_frag_id)
>+ ipv6_proxy_select_ident(dev_net(skb->dev), skb);
>+
> segs = NULL;
> goto out;
> }
>@@ -120,6 +124,8 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
> fptr = (struct frag_hdr *)(skb_network_header(skb) + unfrag_ip6hlen);
> fptr->nexthdr = nexthdr;
> fptr->reserved = 0;
>+ if (!skb_shinfo(skb)->ip6_frag_id)
>+ ipv6_proxy_select_ident(dev_net(skb->dev), skb);
> fptr->identification = skb_shinfo(skb)->ip6_frag_id;
>
> /* Fragment the skb. ipv6 header and the remaining fields of the
>diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
>index 1c66465a42dd..f1491b0004cd 100644
>--- a/net/ipv6/xfrm6_tunnel.c
>+++ b/net/ipv6/xfrm6_tunnel.c
>@@ -390,6 +390,10 @@ static void __exit xfrm6_tunnel_fini(void)
> xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6);
> xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
> unregister_pernet_subsys(&xfrm6_tunnel_net_ops);
>+ /* Someone maybe has gotten the xfrm6_tunnel_spi.
>+ * So need to wait it.
>+ */
>+ rcu_barrier();
> kmem_cache_destroy(xfrm6_tunnel_spi_kmem);
> }
>
>diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
>index 661252aeb7e0..c8b5c8c355b4 100644
>--- a/net/l2tp/l2tp_core.c
>+++ b/net/l2tp/l2tp_core.c
>@@ -217,8 +217,8 @@ struct l2tp_tunnel *l2tp_tunnel_get(const struct net *net, u32 tunnel_id)
>
> rcu_read_lock_bh();
> list_for_each_entry_rcu(tunnel, &pn->l2tp_tunnel_list, list) {
>- if (tunnel->tunnel_id == tunnel_id) {
>- l2tp_tunnel_inc_refcount(tunnel);
>+ if (tunnel->tunnel_id == tunnel_id &&
>+ atomic_inc_not_zero(&tunnel->ref_count)) {
> rcu_read_unlock_bh();
>
> return tunnel;
>@@ -238,8 +238,8 @@ struct l2tp_tunnel *l2tp_tunnel_get_nth(const struct net *net, int nth)
>
> rcu_read_lock_bh();
> list_for_each_entry_rcu(tunnel, &pn->l2tp_tunnel_list, list) {
>- if (++count > nth) {
>- l2tp_tunnel_inc_refcount(tunnel);
>+ if (++count > nth &&
>+ atomic_inc_not_zero(&tunnel->ref_count)) {
> rcu_read_unlock_bh();
> return tunnel;
> }
>@@ -997,7 +997,7 @@ int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
> {
> struct l2tp_tunnel *tunnel;
>
>- tunnel = l2tp_tunnel(sk);
>+ tunnel = rcu_dereference_sk_user_data(sk);
> if (tunnel == NULL)
> goto pass_up;
>
>diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
>index 1ab5e1a51c98..607d8fdd5e68 100644
>--- a/net/mac80211/debugfs_netdev.c
>+++ b/net/mac80211/debugfs_netdev.c
>@@ -735,7 +735,7 @@ void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
>
> dir = sdata->vif.debugfs_dir;
>
>- if (!dir)
>+ if (IS_ERR_OR_NULL(dir))
> return;
>
> sprintf(buf, "netdev:%s", sdata->name);
>diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
>index 7abd786d9d89..44fa945ed6b4 100644
>--- a/net/netfilter/ipvs/ip_vs_xmit.c
>+++ b/net/netfilter/ipvs/ip_vs_xmit.c
>@@ -813,7 +813,8 @@ int
> ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
> struct ip_vs_protocol *pp, struct ip_vs_iphdr *ipvsh)
> {
>- struct netns_ipvs *ipvs = net_ipvs(skb_net(skb));
>+ struct net *net = skb_net(skb);
>+ struct netns_ipvs *ipvs = net_ipvs(net);
> struct rtable *rt; /* Route to the other host */
> __be32 saddr; /* Source for tunnel */
> struct net_device *tdev; /* Device to other host */
>@@ -882,7 +883,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
> iph->daddr = cp->daddr.ip;
> iph->saddr = saddr;
> iph->ttl = old_iph->ttl;
>- ip_select_ident(skb, NULL);
>+ ip_select_ident(net, skb, NULL);
>
> /* Another hack: avoid icmp_send in ip_fragment */
> skb->ignore_df = 1;
>diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
>index cdd47388723b..170681b21d25 100644
>--- a/net/netfilter/nf_conntrack_core.c
>+++ b/net/netfilter/nf_conntrack_core.c
>@@ -23,6 +23,7 @@
> #include <linux/slab.h>
> #include <linux/random.h>
> #include <linux/jhash.h>
>+#include <linux/siphash.h>
> #include <linux/err.h>
> #include <linux/percpu.h>
> #include <linux/moduleparam.h>
>@@ -52,6 +53,7 @@
> #include <net/netfilter/nf_nat.h>
> #include <net/netfilter/nf_nat_core.h>
> #include <net/netfilter/nf_nat_helper.h>
>+#include <net/netns/hash.h>
>
> #define NF_CONNTRACK_VERSION "0.5.0"
>
>@@ -232,6 +234,40 @@ nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
> }
> EXPORT_SYMBOL_GPL(nf_ct_invert_tuple);
>
>+/* Generate a almost-unique pseudo-id for a given conntrack.
>+ *
>+ * intentionally doesn't re-use any of the seeds used for hash
>+ * table location, we assume id gets exposed to userspace.
>+ *
>+ * Following nf_conn items do not change throughout lifetime
>+ * of the nf_conn after it has been committed to main hash table:
>+ *
>+ * 1. nf_conn address
>+ * 2. nf_conn->ext address
>+ * 3. nf_conn->master address (normally NULL)
>+ * 4. tuple
>+ * 5. the associated net namespace
>+ */
>+u32 nf_ct_get_id(const struct nf_conn *ct)
>+{
>+ static __read_mostly siphash_key_t ct_id_seed;
>+ unsigned long a, b, c, d;
>+
>+ net_get_random_once(&ct_id_seed, sizeof(ct_id_seed));
>+
>+ a = (unsigned long)ct;
>+ b = (unsigned long)ct->master ^ net_hash_mix(nf_ct_net(ct));
>+ c = (unsigned long)ct->ext;
>+ d = (unsigned long)siphash(&ct->tuplehash, sizeof(ct->tuplehash),
>+ &ct_id_seed);
>+#ifdef CONFIG_64BIT
>+ return siphash_4u64((u64)a, (u64)b, (u64)c, (u64)d, &ct_id_seed);
>+#else
>+ return siphash_4u32((u32)a, (u32)b, (u32)c, (u32)d, &ct_id_seed);
>+#endif
>+}
>+EXPORT_SYMBOL_GPL(nf_ct_get_id);
>+
> static void
> clean_from_lists(struct nf_conn *ct)
> {
>diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
>index faa736bae869..b9bf8b0f4ec1 100644
>--- a/net/netfilter/nf_conntrack_netlink.c
>+++ b/net/netfilter/nf_conntrack_netlink.c
>@@ -29,6 +29,7 @@
> #include <linux/spinlock.h>
> #include <linux/interrupt.h>
> #include <linux/slab.h>
>+#include <linux/siphash.h>
>
> #include <linux/netfilter.h>
> #include <net/netlink.h>
>@@ -435,7 +436,9 @@ ctnetlink_dump_ct_seq_adj(struct sk_buff *skb, const struct nf_conn *ct)
> static inline int
> ctnetlink_dump_id(struct sk_buff *skb, const struct nf_conn *ct)
> {
>- if (nla_put_be32(skb, CTA_ID, htonl((unsigned long)ct)))
>+ __be32 id = (__force __be32)nf_ct_get_id(ct);
>+
>+ if (nla_put_be32(skb, CTA_ID, id))
> goto nla_put_failure;
> return 0;
>
>@@ -1047,8 +1050,9 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb,
> ct = nf_ct_tuplehash_to_ctrack(h);
>
> if (cda[CTA_ID]) {
>- u_int32_t id = ntohl(nla_get_be32(cda[CTA_ID]));
>- if (id != (u32)(unsigned long)ct) {
>+ __be32 id = nla_get_be32(cda[CTA_ID]);
>+
>+ if (id != (__force __be32)nf_ct_get_id(ct)) {
> nf_ct_put(ct);
> return -ENOENT;
> }
>@@ -2321,6 +2325,25 @@ ctnetlink_exp_dump_mask(struct sk_buff *skb,
>
> static const union nf_inet_addr any_addr;
>
>+static __be32 nf_expect_get_id(const struct nf_conntrack_expect *exp)
>+{
>+ static __read_mostly siphash_key_t exp_id_seed;
>+ unsigned long a, b, c, d;
>+
>+ net_get_random_once(&exp_id_seed, sizeof(exp_id_seed));
>+
>+ a = (unsigned long)exp;
>+ b = (unsigned long)exp->helper;
>+ c = (unsigned long)exp->master;
>+ d = (unsigned long)siphash(&exp->tuple, sizeof(exp->tuple), &exp_id_seed);
>+
>+#ifdef CONFIG_64BIT
>+ return (__force __be32)siphash_4u64((u64)a, (u64)b, (u64)c, (u64)d, &exp_id_seed);
>+#else
>+ return (__force __be32)siphash_4u32((u32)a, (u32)b, (u32)c, (u32)d, &exp_id_seed);
>+#endif
>+}
>+
> static int
> ctnetlink_exp_dump_expect(struct sk_buff *skb,
> const struct nf_conntrack_expect *exp)
>@@ -2368,7 +2391,7 @@ ctnetlink_exp_dump_expect(struct sk_buff *skb,
> }
> #endif
> if (nla_put_be32(skb, CTA_EXPECT_TIMEOUT, htonl(timeout)) ||
>- nla_put_be32(skb, CTA_EXPECT_ID, htonl((unsigned long)exp)) ||
>+ nla_put_be32(skb, CTA_EXPECT_ID, nf_expect_get_id(exp)) ||
> nla_put_be32(skb, CTA_EXPECT_FLAGS, htonl(exp->flags)) ||
> nla_put_be32(skb, CTA_EXPECT_CLASS, htonl(exp->class)))
> goto nla_put_failure;
>@@ -2664,7 +2687,8 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
>
> if (cda[CTA_EXPECT_ID]) {
> __be32 id = nla_get_be32(cda[CTA_EXPECT_ID]);
>- if (ntohl(id) != (u32)(unsigned long)exp) {
>+
>+ if (id != nf_expect_get_id(exp)) {
> nf_ct_expect_put(exp);
> return -ENOENT;
> }
>diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
>index 20a844788443..0777d98d3dec 100644
>--- a/net/packet/af_packet.c
>+++ b/net/packet/af_packet.c
>@@ -2278,8 +2278,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
> void *ph;
> DECLARE_SOCKADDR(struct sockaddr_ll *, saddr, msg->msg_name);
> bool need_wait = !(msg->msg_flags & MSG_DONTWAIT);
>+ unsigned char *addr = NULL;
> int tp_len, size_max;
>- unsigned char *addr;
> int len_sum = 0;
> int status = TP_STATUS_AVAILABLE;
> int hlen, tlen;
>@@ -2289,7 +2289,6 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
> if (likely(saddr == NULL)) {
> dev = packet_cached_dev_get(po);
> proto = po->num;
>- addr = NULL;
> } else {
> err = -EINVAL;
> if (msg->msg_namelen < sizeof(struct sockaddr_ll))
>@@ -2299,10 +2298,13 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
> sll_addr)))
> goto out;
> proto = saddr->sll_protocol;
>- addr = saddr->sll_halen ? saddr->sll_addr : NULL;
> dev = dev_get_by_index(sock_net(&po->sk), saddr->sll_ifindex);
>- if (addr && dev && saddr->sll_halen < dev->addr_len)
>- goto out_put;
>+ if (po->sk.sk_socket->type == SOCK_DGRAM) {
>+ if (dev && msg->msg_namelen < dev->addr_len +
>+ offsetof(struct sockaddr_ll, sll_addr))
>+ goto out_put;
>+ addr = saddr->sll_addr;
>+ }
> }
>
> err = -ENXIO;
>@@ -2435,7 +2437,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
> struct sk_buff *skb;
> struct net_device *dev;
> __be16 proto;
>- unsigned char *addr;
>+ unsigned char *addr = NULL;
> int err, reserve = 0;
> struct virtio_net_hdr vnet_hdr = { 0 };
> int offset = 0;
>@@ -2453,7 +2455,6 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
> if (likely(saddr == NULL)) {
> dev = packet_cached_dev_get(po);
> proto = po->num;
>- addr = NULL;
> } else {
> err = -EINVAL;
> if (msg->msg_namelen < sizeof(struct sockaddr_ll))
>@@ -2461,10 +2462,13 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
> if (msg->msg_namelen < (saddr->sll_halen + offsetof(struct sockaddr_ll, sll_addr)))
> goto out;
> proto = saddr->sll_protocol;
>- addr = saddr->sll_halen ? saddr->sll_addr : NULL;
> dev = dev_get_by_index(sock_net(sk), saddr->sll_ifindex);
>- if (addr && dev && saddr->sll_halen < dev->addr_len)
>- goto out_unlock;
>+ if (sock->type == SOCK_DGRAM) {
>+ if (dev && msg->msg_namelen < dev->addr_len +
>+ offsetof(struct sockaddr_ll, sll_addr))
>+ goto out_unlock;
>+ addr = saddr->sll_addr;
>+ }
> }
>
> err = -ENXIO;
>@@ -3027,19 +3031,28 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
> sock_recv_ts_and_drops(msg, sk, skb);
>
> if (msg->msg_name) {
>+ int copy_len;
>+
> /* If the address length field is there to be filled
> * in, we fill it in now.
> */
> if (sock->type == SOCK_PACKET) {
> __sockaddr_check_size(sizeof(struct sockaddr_pkt));
> msg->msg_namelen = sizeof(struct sockaddr_pkt);
>+ copy_len = msg->msg_namelen;
> } else {
> struct sockaddr_ll *sll = &PACKET_SKB_CB(skb)->sa.ll;
> msg->msg_namelen = sll->sll_halen +
> offsetof(struct sockaddr_ll, sll_addr);
>+ copy_len = msg->msg_namelen;
>+ if (msg->msg_namelen < sizeof(struct sockaddr_ll)) {
>+ memset(msg->msg_name +
>+ offsetof(struct sockaddr_ll, sll_addr),
>+ 0, sizeof(sll->sll_addr));
>+ msg->msg_namelen = sizeof(struct sockaddr_ll);
>+ }
> }
>- memcpy(msg->msg_name, &PACKET_SKB_CB(skb)->sa,
>- msg->msg_namelen);
>+ memcpy(msg->msg_name, &PACKET_SKB_CB(skb)->sa, copy_len);
> }
>
> if (pkt_sk(sk)->auxdata) {
>diff --git a/net/rose/rose_loopback.c b/net/rose/rose_loopback.c
>index 344456206b70..d5199b25b821 100644
>--- a/net/rose/rose_loopback.c
>+++ b/net/rose/rose_loopback.c
>@@ -16,15 +16,19 @@
> #include <linux/init.h>
>
> static struct sk_buff_head loopback_queue;
>+#define ROSE_LOOPBACK_LIMIT 1000
> static struct timer_list loopback_timer;
>
> static void rose_set_loopback_timer(void);
>+static void rose_loopback_timer(unsigned long);
>
> void rose_loopback_init(void)
> {
> skb_queue_head_init(&loopback_queue);
>
> init_timer(&loopback_timer);
>+ loopback_timer.data = 0;
>+ loopback_timer.function = &rose_loopback_timer;
> }
>
> static int rose_loopback_running(void)
>@@ -34,33 +38,27 @@ static int rose_loopback_running(void)
>
> int rose_loopback_queue(struct sk_buff *skb, struct rose_neigh *neigh)
> {
>- struct sk_buff *skbn;
>-
>- skbn = skb_clone(skb, GFP_ATOMIC);
>+ struct sk_buff *skbn = NULL;
>
>- kfree_skb(skb);
>+ if (skb_queue_len(&loopback_queue) < ROSE_LOOPBACK_LIMIT)
>+ skbn = skb_clone(skb, GFP_ATOMIC);
>
>- if (skbn != NULL) {
>+ if (skbn) {
>+ consume_skb(skb);
> skb_queue_tail(&loopback_queue, skbn);
>
> if (!rose_loopback_running())
> rose_set_loopback_timer();
>+ } else {
>+ kfree_skb(skb);
> }
>
> return 1;
> }
>
>-static void rose_loopback_timer(unsigned long);
>-
> static void rose_set_loopback_timer(void)
> {
>- del_timer(&loopback_timer);
>-
>- loopback_timer.data = 0;
>- loopback_timer.function = &rose_loopback_timer;
>- loopback_timer.expires = jiffies + 10;
>-
>- add_timer(&loopback_timer);
>+ mod_timer(&loopback_timer, jiffies + 10);
> }
>
> static void rose_loopback_timer(unsigned long param)
>@@ -71,8 +69,12 @@ static void rose_loopback_timer(unsigned long param)
> struct sock *sk;
> unsigned short frametype;
> unsigned int lci_i, lci_o;
>+ int count;
>
>- while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
>+ for (count = 0; count < ROSE_LOOPBACK_LIMIT; count++) {
>+ skb = skb_dequeue(&loopback_queue);
>+ if (!skb)
>+ return;
> if (skb->len < ROSE_MIN_LEN) {
> kfree_skb(skb);
> continue;
>@@ -109,6 +111,8 @@ static void rose_loopback_timer(unsigned long param)
> kfree_skb(skb);
> }
> }
>+ if (!skb_queue_empty(&loopback_queue))
>+ mod_timer(&loopback_timer, jiffies + 1);
> }
>
> void __exit rose_loopback_clear(void)
>diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
>index cdfa7f4c0a59..4a5598a42cd6 100644
>--- a/net/sunrpc/cache.c
>+++ b/net/sunrpc/cache.c
>@@ -50,6 +50,7 @@ static void cache_init(struct cache_head *h)
> h->last_refresh = now;
> }
>
>+static inline int cache_is_valid(struct cache_head *h);
> static void cache_fresh_locked(struct cache_head *head, time_t expiry);
> static void cache_fresh_unlocked(struct cache_head *head,
> struct cache_detail *detail);
>@@ -98,6 +99,8 @@ struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
> *hp = tmp->next;
> tmp->next = NULL;
> detail->entries --;
>+ if (cache_is_valid(tmp) == -EAGAIN)
>+ set_bit(CACHE_NEGATIVE, &tmp->flags);
> cache_fresh_locked(tmp, 0);
> freeme = tmp;
> break;
>diff --git a/net/tipc/sysctl.c b/net/tipc/sysctl.c
>index f3fef93325a8..a4125b069833 100644
>--- a/net/tipc/sysctl.c
>+++ b/net/tipc/sysctl.c
>@@ -37,6 +37,7 @@
>
> #include <linux/sysctl.h>
>
>+static int one = 1;
> static struct ctl_table_header *tipc_ctl_hdr;
>
> static struct ctl_table tipc_table[] = {
>@@ -45,7 +46,8 @@ static struct ctl_table tipc_table[] = {
> .data = &sysctl_tipc_rmem,
> .maxlen = sizeof(sysctl_tipc_rmem),
> .mode = 0644,
>- .proc_handler = proc_dointvec,
>+ .proc_handler = proc_dointvec_minmax,
>+ .extra1 = &one,
> },
> {}
> };
>diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
>index 62fbbdc58566..b0f84a040f32 100644
>--- a/net/xfrm/xfrm_user.c
>+++ b/net/xfrm/xfrm_user.c
>@@ -1255,7 +1255,7 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
> ret = verify_policy_dir(p->dir);
> if (ret)
> return ret;
>- if (p->index && ((p->index & XFRM_POLICY_MAX) != p->dir))
>+ if (p->index && (xfrm_policy_id2dir(p->index) != p->dir))
> return -EINVAL;
>
> return 0;
>diff --git a/security/device_cgroup.c b/security/device_cgroup.c
>index d9d69e6930ed..8fee5f7be4f1 100644
>--- a/security/device_cgroup.c
>+++ b/security/device_cgroup.c
>@@ -568,7 +568,7 @@ static int propagate_exception(struct dev_cgroup *devcg_root,
> devcg->behavior == DEVCG_DEFAULT_ALLOW) {
> rc = dev_exception_add(devcg, ex);
> if (rc)
>- break;
>+ return rc;
> } else {
> /*
> * in the other possible cases:
>diff --git a/sound/core/init.c b/sound/core/init.c
>index 7bdfd19e24a8..e0d04b91d561 100644
>--- a/sound/core/init.c
>+++ b/sound/core/init.c
>@@ -389,14 +389,7 @@ int snd_card_disconnect(struct snd_card *card)
> card->shutdown = 1;
> spin_unlock(&card->files_lock);
>
>- /* phase 1: disable fops (user space) operations for ALSA API */
>- mutex_lock(&snd_card_mutex);
>- snd_cards[card->number] = NULL;
>- clear_bit(card->number, snd_cards_lock);
>- mutex_unlock(&snd_card_mutex);
>-
>- /* phase 2: replace file->f_op with special dummy operations */
>-
>+ /* replace file->f_op with special dummy operations */
> spin_lock(&card->files_lock);
> list_for_each_entry(mfile, &card->files_list, list) {
> /* it's critical part, use endless loop */
>@@ -412,7 +405,7 @@ int snd_card_disconnect(struct snd_card *card)
> }
> spin_unlock(&card->files_lock);
>
>- /* phase 3: notify all connected devices about disconnection */
>+ /* notify all connected devices about disconnection */
> /* at this point, they cannot respond to any calls except release() */
>
> #if IS_ENABLED(CONFIG_SND_MIXER_OSS)
>@@ -430,6 +423,13 @@ int snd_card_disconnect(struct snd_card *card)
> device_del(&card->card_dev);
> card->registered = false;
> }
>+
>+ /* disable fops (user space) operations for ALSA API */
>+ mutex_lock(&snd_card_mutex);
>+ snd_cards[card->number] = NULL;
>+ clear_bit(card->number, snd_cards_lock);
>+ mutex_unlock(&snd_card_mutex);
>+
> #ifdef CONFIG_PM
> wake_up(&card->power_sleep);
> #endif
>diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
>index 41bae2baea71..f853b62befa1 100644
>--- a/sound/core/oss/pcm_oss.c
>+++ b/sound/core/oss/pcm_oss.c
>@@ -951,6 +951,28 @@ static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
> oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
> params_channels(params) / 8;
>
>+ err = snd_pcm_oss_period_size(substream, params, sparams);
>+ if (err < 0)
>+ goto failure;
>+
>+ n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size);
>+ err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL);
>+ if (err < 0)
>+ goto failure;
>+
>+ err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS,
>+ runtime->oss.periods, NULL);
>+ if (err < 0)
>+ goto failure;
>+
>+ snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
>+
>+ err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams);
>+ if (err < 0) {
>+ pcm_dbg(substream->pcm, "HW_PARAMS failed: %i\n", err);
>+ goto failure;
>+ }
>+
> #ifdef CONFIG_SND_PCM_OSS_PLUGINS
> snd_pcm_oss_plugin_clear(substream);
> if (!direct) {
>@@ -985,27 +1007,6 @@ static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
> }
> #endif
>
>- err = snd_pcm_oss_period_size(substream, params, sparams);
>- if (err < 0)
>- goto failure;
>-
>- n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size);
>- err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL);
>- if (err < 0)
>- goto failure;
>-
>- err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS,
>- runtime->oss.periods, NULL);
>- if (err < 0)
>- goto failure;
>-
>- snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
>-
>- if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) {
>- pcm_dbg(substream->pcm, "HW_PARAMS failed: %i\n", err);
>- goto failure;
>- }
>-
> memset(sw_params, 0, sizeof(*sw_params));
> if (runtime->oss.trigger) {
> sw_params->start_threshold = 1;
>diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
>index 7c407ab2d82a..a0ee065a9f8c 100644
>--- a/sound/core/pcm_native.c
>+++ b/sound/core/pcm_native.c
>@@ -1063,8 +1063,15 @@ static int snd_pcm_pause(struct snd_pcm_substream *substream, int push)
> static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state)
> {
> struct snd_pcm_runtime *runtime = substream->runtime;
>- if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED)
>+ switch (runtime->status->state) {
>+ case SNDRV_PCM_STATE_SUSPENDED:
> return -EBUSY;
>+ /* unresumable PCM state; return -EBUSY for skipping suspend */
>+ case SNDRV_PCM_STATE_OPEN:
>+ case SNDRV_PCM_STATE_SETUP:
>+ case SNDRV_PCM_STATE_DISCONNECTED:
>+ return -EBUSY;
>+ }
> runtime->trigger_master = substream;
> return 0;
> }
>diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
>index 2bd5b8524181..09e05c0b59a1 100644
>--- a/sound/core/rawmidi.c
>+++ b/sound/core/rawmidi.c
>@@ -29,6 +29,7 @@
> #include <linux/mutex.h>
> #include <linux/module.h>
> #include <linux/delay.h>
>+#include <linux/nospec.h>
> #include <sound/rawmidi.h>
> #include <sound/info.h>
> #include <sound/control.h>
>@@ -601,6 +602,7 @@ static int __snd_rawmidi_info_select(struct snd_card *card,
> return -ENXIO;
> if (info->stream < 0 || info->stream > 1)
> return -EINVAL;
>+ info->stream = array_index_nospec(info->stream, 2);
> pstr = &rmidi->streams[info->stream];
> if (pstr->substream_count == 0)
> return -ENOENT;
>diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c
>index 8bf5335d953b..6ab2de7695d8 100644
>--- a/sound/core/seq/oss/seq_oss_synth.c
>+++ b/sound/core/seq/oss/seq_oss_synth.c
>@@ -617,13 +617,14 @@ int
> snd_seq_oss_synth_make_info(struct seq_oss_devinfo *dp, int dev, struct synth_info *inf)
> {
> struct seq_oss_synth *rec;
>+ struct seq_oss_synthinfo *info = get_synthinfo_nospec(dp, dev);
>
>- if (dev < 0 || dev >= dp->max_synthdev)
>+ if (!info)
> return -ENXIO;
>
>- if (dp->synths[dev].is_midi) {
>+ if (info->is_midi) {
> struct midi_info minf;
>- snd_seq_oss_midi_make_info(dp, dp->synths[dev].midi_mapped, &minf);
>+ snd_seq_oss_midi_make_info(dp, info->midi_mapped, &minf);
> inf->synth_type = SYNTH_TYPE_MIDI;
> inf->synth_subtype = 0;
> inf->nr_voices = 16;
>diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
>index 60fb2c708d75..f6396e012a0f 100644
>--- a/sound/core/seq/seq_clientmgr.c
>+++ b/sound/core/seq/seq_clientmgr.c
>@@ -1249,7 +1249,7 @@ static int snd_seq_ioctl_set_client_info(struct snd_seq_client *client,
>
> /* fill the info fields */
> if (client_info.name[0])
>- strlcpy(client->name, client_info.name, sizeof(client->name));
>+ strscpy(client->name, client_info.name, sizeof(client->name));
>
> client->filter = client_info.filter;
> client->event_lost = client_info.event_lost;
>@@ -1564,7 +1564,7 @@ static int snd_seq_ioctl_create_queue(struct snd_seq_client *client,
> /* set queue name */
> if (! info.name[0])
> snprintf(info.name, sizeof(info.name), "Queue-%d", q->queue);
>- strlcpy(q->name, info.name, sizeof(q->name));
>+ strscpy(q->name, info.name, sizeof(q->name));
> queuefree(q);
>
> if (copy_to_user(arg, &info, sizeof(info)))
>@@ -1642,7 +1642,7 @@ static int snd_seq_ioctl_set_queue_info(struct snd_seq_client *client,
> queuefree(q);
> return -EPERM;
> }
>- strlcpy(q->name, info.name, sizeof(q->name));
>+ strscpy(q->name, info.name, sizeof(q->name));
> queuefree(q);
>
> return 0;
>diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
>index 95b2df232d71..383aaaebad6c 100644
>--- a/tools/lib/traceevent/event-parse.c
>+++ b/tools/lib/traceevent/event-parse.c
>@@ -2065,7 +2065,7 @@ eval_type_str(unsigned long long val, const char *type, int pointer)
> return val & 0xffffffff;
>
> if (strcmp(type, "u64") == 0 ||
>- strcmp(type, "s64"))
>+ strcmp(type, "s64") == 0)
> return val;
>
> if (strcmp(type, "s8") == 0)
>diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c
>index c81bd9a31db7..fd3a453a21cf 100644
>--- a/tools/perf/tests/evsel-tp-sched.c
>+++ b/tools/perf/tests/evsel-tp-sched.c
>@@ -77,5 +77,6 @@ int test__perf_evsel__tp_sched_test(void)
> if (perf_evsel__test_field(evsel, "target_cpu", 4, true))
> ret = -1;
>
>+ perf_evsel__delete(evsel);
> return ret;
> }
>diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
>index ad0c85a63c80..cc0b4c5f5c72 100644
>--- a/virt/kvm/kvm_main.c
>+++ b/virt/kvm/kvm_main.c
>@@ -2240,6 +2240,9 @@ static long kvm_device_ioctl(struct file *filp, unsigned int ioctl,
> {
> struct kvm_device *dev = filp->private_data;
>
>+ if (dev->kvm->mm != current->mm)
>+ return -EIO;
>+
> switch (ioctl) {
> case KVM_SET_DEVICE_ATTR:
> return kvm_device_ioctl_attr(dev, dev->ops->set_attr, arg);
>
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