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Date: Tue, 10 Oct 2017 20:13:25 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Wei Wang <weiwan@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
Martin KaFai Lau <kafai@...com>,
Eric Dumazet <edumazet@...gle.com>,
LKML <linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [lkp-robot] [ipv6] a94b9367e0:
BUG:using_smp_processor_id()in_preemptible
FYI, we noticed the following commit (built with gcc-4.9):
commit: a94b9367e044ba672c9f4105eb1516ff6ff4948a ("ipv6: grab rt->rt6i_ref before allocating pcpu rt")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+--------------------------------------------+------------+------------+
| | 2b760fcf5c | a94b9367e0 |
+--------------------------------------------+------------+------------+
| boot_successes | 8 | 4 |
| boot_failures | 0 | 4 |
| BUG:using_smp_processor_id()in_preemptible | 0 | 4 |
+--------------------------------------------+------------+------------+
[ 28.927206] BUG: using smp_processor_id() in preemptible [00000000] code: odhcpd/1011
[ 28.928424] caller is debug_smp_processor_id+0x17/0x19
[ 28.929085] CPU: 1 PID: 1011 Comm: odhcpd Not tainted 4.14.0-rc3-00908-ga94b936 #1
[ 28.930196] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 28.931421] Call Trace:
[ 28.931765] dump_stack+0x85/0xbe
[ 28.932244] check_preemption_disabled+0xdb/0xed
[ 28.932845] debug_smp_processor_id+0x17/0x19
[ 28.933421] ip6_pol_route+0x541/0x607
[ 28.933993] ip6_pol_route_output+0x11/0x13
[ 28.934547] fib6_rule_action+0xbf/0x1ff
[ 28.935088] ? ip6_pol_route_input+0x17/0x17
[ 28.935725] fib_rules_lookup+0x18e/0x245
[ 28.936255] ? fib_rules_lookup+0x18e/0x245
[ 28.936819] ? ip6_pol_route_input+0x17/0x17
[ 28.937404] fib6_rule_lookup+0x5a/0xe9
[ 28.937944] ? ip6_pol_route_input+0x17/0x17
[ 28.938579] ip6_route_output_flags+0xd0/0xdc
[ 28.939147] ip6_dst_lookup_tail+0x57/0x1aa
[ 28.939748] ip6_dst_lookup_flow+0x33/0x73
[ 28.940347] ip6_datagram_dst_update+0x25b/0x4c2
[ 28.940947] ? save_stack_trace+0x16/0x18
[ 28.941697] __ip6_datagram_connect+0x218/0x2ba
[ 28.942286] ? __ip6_datagram_connect+0x218/0x2ba
[ 28.942897] ? __local_bh_enable_ip+0x87/0xa8
[ 28.943471] ? lock_sock_nested+0x42/0x90
[ 28.944080] ip6_datagram_connect+0x26/0x3a
[ 28.944634] ip6_datagram_connect_v6_only+0x14/0x16
[ 28.945296] inet_dgram_connect+0x4a/0x64
[ 28.945815] SyS_connect+0x7e/0xbf
[ 28.946373] ? __might_fault+0x79/0x7f
[ 28.946934] compat_SyS_socketcall+0x113/0x219
[ 28.947797] ? do_int80_syscall_32+0x22/0x1c1
[ 28.948438] ? trace_hardirqs_on_caller+0x174/0x190
[ 28.949063] do_int80_syscall_32+0x74/0x1c1
[ 28.949664] entry_INT80_compat+0x32/0x50
[ 28.950269] RIP: 0023:0xf7ef2384
[ 28.950735] RSP: 002b:00000000ffa89318 EFLAGS: 00000296 ORIG_RAX: 0000000000000066
[ 28.951736] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000ffa89328
[ 28.952670] RDX: 00000000f7f38000 RSI: 00000000ffa89328 RDI: 00000000ffa89440
[ 28.953572] RBP: 00000000ffa89388 R08: 0000000000000000 R09: 0000000000000000
[ 28.954538] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 28.955533] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Elapsed time: 30
initrds=(
/osimage/openwrt/openwrt-i386-2016-03-16.cgz
/lkp/scheduled/vm-lkp-nex04-openwrt-ia32-27/boot-1-openwrt-i386-2016-03-16.cgz-a94b9367e044ba672c9f4105eb1516ff6ff4948a-20171009-12855-139piyy-0.cgz
/lkp/lkp/lkp-i386.cgz
)
cat "${initrds[@]}" > /fs/sdb1/initrd-vm-lkp-nex04-openwrt-ia32-27
kvm=(
qemu-system-x86_64
-enable-kvm
-kernel /pkg/linux/x86_64-randconfig-h0-10091308/gcc-4.9/a94b9367e044ba672c9f4105eb1516ff6ff4948a/vmlinuz-4.14.0-rc3-00908-ga94b936
-initrd /fs/sdb1/initrd-vm-lkp-nex04-openwrt-ia32-27
-m 512
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0,hostfwd=tcp::23296-:22
-boot order=nc
-no-reboot
-watchdog i6300esb
-watchdog-action debug
-rtc base=localtime
-pidfile /dev/shm/kboot/pid-vm-lkp-nex04-openwrt-ia32-27
-serial file:/dev/shm/kboot/vm-lkp-nex04-openwrt-ia32-27/serial
-serial file:/dev/shm/kboot/vm-lkp-nex04-openwrt-ia32-27/kmsg
-daemonize
-display none
-monitor null
)
append=(
ip=::::vm-lkp-nex04-openwrt-ia32-27::dhcp
root=/dev/ram0
user=lkp
job=/lkp/scheduled/vm-lkp-nex04-openwrt-ia32-27/boot-1-openwrt-i386-2016-03-16.cgz-a94b9367e044ba672c9f4105eb1516ff6ff4948a-20171009-12855-139piyy-0.yaml
ARCH=x86_64
kconfig=x86_64-randconfig-h0-10091308
branch=linux-devel/devel-spot-201710090350
commit=a94b9367e044ba672c9f4105eb1516ff6ff4948a
BOOT_IMAGE=/pkg/linux/x86_64-randconfig-h0-10091308/gcc-4.9/a94b9367e044ba672c9f4105eb1516ff6ff4948a/vmlinuz-4.14.0-rc3-00908-ga94b936
max_uptime=600
RESULT_ROOT=/result/boot/1/vm-lkp-nex04-openwrt-ia32/openwrt-i386-2016-03-16.cgz/x86_64-randconfig-h0-10091308/gcc-4.9/a94b9367e044ba672c9f4105eb1516ff6ff4948a/0
LKP_SERVER=inn
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
View attachment "config-4.14.0-rc3-00908-ga94b936" of type "text/plain" (131158 bytes)
View attachment "job-script" of type "text/plain" (4082 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (16312 bytes)
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