We are seeing following errors on two of our nodes which brings the node
to freeze.
Node 1:
May 8 11:19:05 kernel: [89019.043852] Pid: 15145, comm: python Tainted: GB
2.6.32-344-ec2 #46-Ubuntu
May 8 11:19:05 kernel: [89019.043852] Call Trace:
May 8 11:19:05 kernel: [89019.043852] [810b2d90] bad_page+0xd0/0x130
May 8 11:19:05 kernel: [89019.043852] [810b5964]
free_hot_cold_page+0x2a4/0x300
May 8 11:19:05 kernel: [89019.043852] [810b5a11]
__pagevec_free+0x51/0xb0
May 8 11:19:05 kernel: [89019.043852] [8101d472] ?
___pte_free_tlb+0x22/0x90
May 8 11:19:05 kernel: [89019.043852] [810b853c]
release_pages+0x22c/0x280
May 8 11:19:05 kernel: [89019.043852] [810de6e4]
free_pages_and_swap_cache+0xb4/0xe0
May 8 11:19:05 kernel: [89019.043852] [810d40bf]
unmap_region+0x14f/0x170
May 8 11:19:05 kernel: [89019.043852] [810d46c5]
do_munmap+0x295/0x3b0
May 8 11:19:05 kernel: [89019.043852] [810d4831]
sys_munmap+0x51/0x80
May 8 11:19:05 kernel: [89019.043852] [81009bb8]
system_call_fastpath+0x16/0x1b
May 8 11:19:05 kernel: [89019.043852] [81009b50] ?
system_call+0x0/0x52
Node 2:
May 8 07:58:42 kernel: [1986597.770228] CPU 7
May 8 07:58:42 kernel: [1986597.770231] Modules linked in: ipv6
May 8 07:58:42 kernel: [1986597.770237] Pid: 25928, comm: python Not tainted
2.6.32-344-ec2 #46-Ubuntu
May 8 07:58:42 kernel: [1986597.770240] RIP: e030:[810b521f]
[810b521f] free_pcppages_bulk+0x17f/0x360
May 8 07:58:42 kernel: [1986597.770251] RSP: e02b:8800bd85fa38 EFLAGS:
00010002
May 8 07:58:42 kernel: [1986597.770254] RAX: dead00200200 RBX:
0001 RCX: 816af2c0
May 8 07:58:42 kernel: [1986597.770257] RDX: 816af2f0 RSI:
0030 RDI: 816b0fc0
May 8 07:58:42 kernel: [1986597.770259] RBP: 8800bd85faa8 R08:
880006fbe970 R09: 40020068
May 8 07:58:42 kernel: [1986597.770262] R10: R11:
dead00200200 R12: 880004cff8f0
May 8 07:58:42 kernel: [1986597.770264] R13: 880004cff918 R14:
816aef00 R15: dead00100100
May 8 07:58:42 kernel: [1986597.770272] FS: 7f9c5ffef700()
GS:880002ccd000() knlGS:
May 8 07:58:42 kernel: [1986597.770275] CS: e033 DS: ES: CR0:
80050033
May 8 07:58:42 kernel: [1986597.770278] CR2: 7f604762b000 CR3:
580b7000 CR4: 2660
May 8 07:58:42 kernel: [1986597.770281] DR0: DR1:
DR2:
May 8 07:58:42 kernel: [1986597.770284] DR3: DR6:
0ff0 DR7: 0400
May 8 07:58:42 kernel: [1986597.770287] Process python (pid: 25928, threadinfo
8800bd85e000, task 8800bdbec0c0)
May 8 07:58:42 kernel: [1986597.770291] 816b0f40 00020026
816af2f0 0030
May 8 07:58:42 kernel: [1986597.770296] 0 816af2f8 0007
816af2c0 0001e033
May 8 07:58:42 kernel: [1986597.770301] 0 0246 03c0
2600 0001
May 8 07:58:42 kernel: [1986597.770312] [810b5929]
free_hot_cold_page+0x269/0x300
May 8 07:58:42 kernel: [1986597.770316] [810b5a98]
free_hot_page+0x28/0x60
May 8 07:58:42 kernel: [1986597.770319] [810b8106]
put_page+0x46/0x170
May 8 07:58:42 kernel: [1986597.770325] [813ff6d4]
skb_release_data+0x74/0xd0
May 8 07:58:42 kernel: [1986597.770328] [813ff1d9]
__kfree_skb+0x19/0xa0
May 8 07:58:42 kernel: [1986597.770332] [81446d3d]
tcp_recvmsg+0x72d/0xac0
May 8 07:58:42 kernel: [1986597.770338] [8100892c] ?
__switch_to+0x2ec/0x780
May 8 07:58:42 kernel: [1986597.770341] [813fa574]
sock_common_recvmsg+0x34/0x50
May 8 07:58:42 kernel: [1986597.770345] [813fa169]
sock_aio_read+0x149/0x150
May 8 07:58:42 kernel: [1986597.770349] [810ee592]
do_sync_read+0xf2/0x130
May 8 07:58:42 kernel: [1986597.770355] [8105a3f0] ?
autoremove_wake_function+0x0/0x40
May 8 07:58:42 kernel: [1986597.770359] [814afd03] ?
thread_return+0x4e/0x42b
May 8 07:58:42 kernel: [1986597.770365] [812dd951] ?
security_file_permission+0x11/0x20
May 8 07:58:42 kernel: [1986597.770368] [810ef011]
vfs_read+0x181/0x1a0
May 8 07:58:42 kernel: [1986597.770371] [810ef07c]
sys_read+0x4c/0x80
May 8 07:58:42 kernel: [1986597.770374] [81009bb8]
system_call_fastpath+0x16/0x1b
May 8 07:58:42 kernel: [1986597.770377] [81009b50] ?
system_call+0x0/0x52
May 8 07:58:42 kernel: [1986597.770429] RSP 8800bd85fa38
May 8 07:58:42 kernel: [1986597.770447] ---[ end trace c65215bb68b9f489 ]---
Are these because of the same bug?
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https://bugs.launchpad.net/bugs/1052275
