kernel OOPS in MM(?)

[Evgenii Lepikhin]

Hi,

We need help to understand the source of the problem and may be to create a bugreport. Here is crash report:

Mar 10 04:03:51 l28 kernel: [2075560.434445] BUG: unable to handle kernel paging request at 0000000040008021
Mar 10 04:03:51 l28 kernel: [2075560.434669] IP: [<ffffffff810ee519>] __kmalloc+0x69/0x100
Mar 10 04:03:51 l28 kernel: [2075560.434800] PGD b7e462067 PUD 0 
Mar 10 04:03:51 l28 kernel: [2075560.434913] Oops: 0000 [#1] SMP 
Mar 10 04:03:51 l28 kernel: [2075560.435044] Modules linked in: tcm_loop iscsi_target_mod target_core_pscsi target_core_file target_core_iblock target_core_mod ipt_NETFLOW(O) configfs iscsi_tcp libis
csi_tcp libiscsi scsi_transport_iscsi fuse [last unloaded: ipfw_mod]
Mar 10 04:03:51 l28 kernel: [2075560.435539] CPU: 4 PID: 27141 Comm: rm Tainted: G           O 3.12.51-jl-2015-12-25 #1
Mar 10 04:03:51 l28 kernel: [2075560.435734] Hardware name: Intel Corporation S2600IP ........../S2600IP, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
Mar 10 04:03:51 l28 kernel: [2075560.435939] task: ffff880e622ccba0 ti: ffff880eeb008000 task.ti: ffff880eeb008000
Mar 10 04:03:51 l28 kernel: [2075560.436131] RIP: 0010:[<ffffffff810ee519>]  [<ffffffff810ee519>] __kmalloc+0x69/0x100
Mar 10 04:03:51 l28 kernel: [2075560.436333] RSP: 0018:ffff880eeb009b38  EFLAGS: 00010282
Mar 10 04:03:51 l28 kernel: [2075560.436439] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000a8a73dc2
Mar 10 04:03:51 l28 kernel: [2075560.436632] RDX: 00000000a8a73dc1 RSI: 0000000000000000 RDI: 0000000000013500
Mar 10 04:03:51 l28 kernel: [2075560.438248] RBP: ffff880eeb009b58 R08: ffff88103fc13500 R09: ffffffff811a0267
Mar 10 04:03:51 l28 kernel: [2075560.438446] R10: ffff880eeb009d84 R11: 0000000000000000 R12: ffff88081f803a00
Mar 10 04:03:51 l28 kernel: [2075560.438656] R13: 0000000040008021 R14: 0000000000000250 R15: ffff880250e833b0
Mar 10 04:03:51 l28 kernel: [2075560.438851] FS:  00007fe2316dd700(0000) GS:ffff88103fc00000(0000) knlGS:0000000000000000
Mar 10 04:03:51 l28 kernel: [2075560.439045] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Mar 10 04:03:51 l28 kernel: [2075560.439152] CR2: 0000000040008021 CR3: 0000000a20736000 CR4: 00000000000407e0
Mar 10 04:03:51 l28 kernel: [2075560.439343] Stack:
Mar 10 04:03:51 l28 kernel: [2075560.439439]  0000000000000000 0000000000000250 0000000000000060 0000000000000000
Mar 10 04:03:51 l28 kernel: [2075560.439663]  ffff880eeb009b88 ffffffff811a0267 ffff881015fb7fe0 0000000000000060
Mar 10 04:03:51 l28 kernel: [2075560.439898]  ffff880250e83490 0000000000000000 ffff880eeb009ba8 ffffffff811a02f8
Mar 10 04:03:51 l28 kernel: [2075560.440153] Call Trace:
Mar 10 04:03:51 l28 kernel: [2075560.440257]  [<ffffffff811a0267>] kmem_alloc+0x67/0xe0
Mar 10 04:03:51 l28 kernel: [2075560.440365]  [<ffffffff811a02f8>] kmem_zalloc+0x18/0x40
Mar 10 04:03:51 l28 kernel: [2075560.440473]  [<ffffffff811e0523>] xfs_log_commit_cil+0x373/0x4c0
Mar 10 04:03:51 l28 kernel: [2075560.440585]  [<ffffffff811aab00>] ? xfs_bmap_search_multi_extents+0xe0/0x110
Mar 10 04:03:51 l28 kernel: [2075560.440783]  [<ffffffff8119fb6c>] xfs_trans_commit+0x6c/0x250
Mar 10 04:03:51 l28 kernel: [2075560.440899]  [<ffffffff811875d7>] xfs_bmap_finish+0xb7/0x1a0
Mar 10 04:03:51 l28 kernel: [2075560.441017]  [<ffffffff811cedd3>] xfs_itruncate_extents+0xe3/0x200
Mar 10 04:03:51 l28 kernel: [2075560.441131]  [<ffffffff811cf60c>] xfs_inactive+0x27c/0x3a0
Mar 10 04:03:51 l28 kernel: [2075560.441275]  [<ffffffff8105d010>] ? wake_atomic_t_function+0x40/0x40
Mar 10 04:03:51 l28 kernel: [2075560.441386]  [<ffffffff8119c033>] xfs_fs_evict_inode+0x73/0x80
Mar 10 04:03:51 l28 kernel: [2075560.441498]  [<ffffffff811107aa>] evict+0xaa/0x1b0
Mar 10 04:03:51 l28 kernel: [2075560.441604]  [<ffffffff81110ed3>] iput+0x103/0x1a0
Mar 10 04:03:51 l28 kernel: [2075560.441713]  [<ffffffff81104e0f>] do_unlinkat+0x1cf/0x240
Mar 10 04:03:51 l28 kernel: [2075560.441823]  [<ffffffff810fc585>] ? SyS_newfstatat+0x25/0x30
Mar 10 04:03:51 l28 kernel: [2075560.441932]  [<ffffffff8110727d>] SyS_unlinkat+0x1d/0x40
Mar 10 04:03:51 l28 kernel: [2075560.442044]  [<ffffffff8148d8c2>] system_call_fastpath+0x16/0x1b
Mar 10 04:03:51 l28 kernel: [2075560.442155] Code: 65 4c 03 04 25 48 bc 00 00 49 8b 50 08 4d 8b 28 49 8b 40 10 4d 85 ed 74 6b 48 85 c0 74 66 49 63 44 24 20 48 8d 4a 01 49 8b 3c 24 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 bd 49 
Mar 10 04:03:51 l28 kernel: [2075560.442904] RIP  [<ffffffff810ee519>] __kmalloc+0x69/0x100
Mar 10 04:03:51 l28 kernel: [2075560.443020]  RSP <ffff880eeb009b38>
Mar 10 04:03:51 l28 kernel: [2075560.443122] CR2: 0000000040008021
Mar 10 04:03:51 l28 kernel: [2075560.443809] ---[ end trace 92cd2d4bad1896f4 ]---

Kernel 3.12.51. Gdb listing:

(gdb) list *(__kmalloc+0x69)
0xffffffff810ee519 is in __kmalloc (mm/slub.c:260).
[...]
258     static inline void *get_freepointer(struct kmem_cache *s, void *object)
259     {
260             return *(void **)(object + s->offset);
261     }

What whould be the next step? Thank you.


-- 
UNIX/Ocaml engineer at 1Gb.ru. Telegram: johnlepikhin