lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 11 Mar 2014 01:46:49 +0100 From: Jakub Kiciński <moorray3@...pl> To: Eric Dumazet <eric.dumazet@...il.com> Cc: netdev@...r.kernel.org, Fan Du <fan.du@...driver.com>, Steffen Klassert <steffen.klassert@...unet.com> Subject: Re: net-next: NULL pointer dereference on adding a net namespace and a system freeze On Mon, 10 Mar 2014 07:04:36 -0700, Eric Dumazet wrote: > On Mon, 2014-03-10 at 13:19 +0100, Jakub Kiciński wrote: > > > It helps with the flow_cache warning and BUG ("ip netns add" works) but > > machine still freezes after 5-10 minutes. I will try to revert > > ca925cf1534ebcec332c08719a7dee6ee1782ce4 and see if that solves it. > > I think the other issue is separate. It might be triggered by > conntracking change. I bisected the other issue to be caused/uncovered by: commit 1a1ccc96abb2ed9b8fbb71018e64b97324caef53 Author: Steffen Klassert <steffen.klassert@...unet.com> Date: Wed Feb 19 10:07:34 2014 +0100 xfrm: Remove caching of xfrm_policy_sk_bundles We currently cache socket policy bundles at xfrm_policy_sk_bundles. These cached bundles are never used. Instead we create and cache a new one whenever xfrm_lookup() is called on a socket policy. Most protocols cache the used routes to the socket, so let's remove the unused caching of socket policy bundles in xfrm. Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> Machine freezes after FLOW_HASH_RND_PERIOD (default 10 minutes). Now get this warning during boot: [ 31.664820] ------------[ cut here ]------------ [ 31.664824] WARNING: CPU: 2 PID: 3560 at /home/kuba/Development/Linux/net-next/lib/list_debug.c:33 __list_add+0xac/0xc0() [ 31.664826] list_add corruption. prev->next should be next (ffff880224579598), but was (null). (prev=ffff8802106140e8). [ 31.664827] Modules linked in: xt_CHECKSUM tun bridge stp llc ccm xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw ftdi_sio arc4 rt2800pci rt2800mmio rt2800lib crc_ccitt eeprom_93cx6 rt2x00pci kvm_amd rt2x00mmio rt2x00lib mac80211 kvm snd_ca0106 cfg80211 e1000e snd_ac97_codec ac97_bus microcode serio_raw ptp i2c_piix4 k10temp acpi_cpufreq pps_core wmi r8169 mii rfkill nfsd auth_rpcgss nfs_acl lockd binfmt_misc sunrpc usb_storage radeon drm_kms_helper ttm [ 31.664855] CPU: 2 PID: 3560 Comm: (t-daemon) Not tainted 3.14.0-rc2-1a1ccc96abb2ed9b8fbb71018e64b97324caef53+ #11 [ 31.664856] Hardware name: Gigabyte Technology Co., Ltd. GA-MA790XT-UD4P/GA-MA790XT-UD4P, BIOS F9b 08/17/2012 [ 31.664857] 0000000000000009 ffff8802242e7c70 ffffffff81627878 ffff8802242e7cb8 [ 31.664859] ffff8802242e7ca8 ffffffff8104a28d ffff880210610ea8 ffff880224579598 [ 31.664861] ffff8802106140e8 ffff880224578000 0000000000000000 ffff8802242e7d08 [ 31.664863] Call Trace: [ 31.664865] [<ffffffff81627878>] dump_stack+0x4d/0x66 [ 31.664867] [<ffffffff8104a28d>] warn_slowpath_common+0x7d/0xa0 [ 31.664869] [<ffffffff8104a2fc>] warn_slowpath_fmt+0x4c/0x50 [ 31.664871] [<ffffffff812fdd8c>] __list_add+0xac/0xc0 [ 31.664873] [<ffffffff81055d33>] __internal_add_timer+0x113/0x130 [ 31.664875] [<ffffffff81055f47>] internal_add_timer+0x17/0x40 [ 31.664876] [<ffffffff810587b2>] mod_timer+0x102/0x230 [ 31.664878] [<ffffffff810588f8>] add_timer+0x18/0x20 [ 31.664880] [<ffffffff81572204>] flow_cache_init+0x224/0x2b0 [ 31.664882] [<ffffffff815f7247>] xfrm_net_init+0x227/0x360 [ 31.664884] [<ffffffff815f7171>] ? xfrm_net_init+0x151/0x360 [ 31.664886] [<ffffffff81553131>] ops_init+0x41/0x150 [ 31.664888] [<ffffffff815532b3>] setup_net+0x73/0x110 [ 31.664890] [<ffffffff815537f2>] copy_net_ns+0x72/0x100 [ 31.664892] [<ffffffff81072619>] create_new_namespaces+0xf9/0x190 [ 31.664894] [<ffffffff81072891>] unshare_nsproxy_namespaces+0x61/0xa0 [ 31.664895] [<ffffffff81049949>] SyS_unshare+0x159/0x270 [ 31.664897] [<ffffffff81638092>] system_call_fastpath+0x16/0x1b -- kuba -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists