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xfs_efi_item slab corruption. (v3.9-10936-g51a26ae)

To: Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>
Subject: xfs_efi_item slab corruption. (v3.9-10936-g51a26ae)
From: Dave Jones <davej@xxxxxxxxxx>
Date: Tue, 7 May 2013 09:37:07 -0400
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
Mail-followup-to: Dave Jones <davej@xxxxxxxxxx>, Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
User-agent: Mutt/1.5.21 (2010-09-15)
started compiling a kernel, and then...

[  172.233200] 
=============================================================================
[  172.233205] BUG xfs_efi_item (Not tainted): Poison overwritten
[  172.233207] 
-----------------------------------------------------------------------------

[  172.233210] Disabling lock debugging due to kernel taint
[  172.233213] INFO: 0xffff8800aaac4ea8-0xffff8800aaac4ea8. First byte 0x6a 
instead of 0x6b
[  172.233235] INFO: Allocated in kmem_zone_alloc+0x67/0xf0 [xfs] age=29290 
cpu=1 pid=1357
[  172.233239]  __slab_alloc+0x468/0x52c
[  172.233243]  kmem_cache_alloc+0x2b4/0x320
[  172.233256]  kmem_zone_alloc+0x67/0xf0 [xfs]
[  172.233269]  kmem_zone_zalloc+0x14/0x40 [xfs]
[  172.233287]  xfs_efi_init+0x41/0xa0 [xfs]
[  172.233305]  xfs_trans_get_efi+0x58/0x90 [xfs]
[  172.233320]  xfs_bmap_finish+0x76/0x1b0 [xfs]
[  172.233338]  xfs_itruncate_extents+0x2cd/0x610 [xfs]
[  172.233353]  xfs_inactive+0x401/0x530 [xfs]
[  172.233367]  xfs_fs_evict_inode+0x8c/0x1b0 [xfs]
[  172.233370]  evict+0xa3/0x1a0
[  172.233372]  iput+0xf5/0x180
[  172.233374]  dput+0x208/0x2f0
[  172.233378]  SYSC_renameat+0x3be/0x430
[  172.233380]  SyS_renameat+0xe/0x10
[  172.233383]  SyS_rename+0x1b/0x20
[  172.233399] INFO: Freed in xfs_efi_item_free+0x21/0x40 [xfs] age=27303 cpu=1 
pid=177
[  172.233402]  __slab_free+0x41/0x39f
[  172.233405]  kmem_cache_free+0x326/0x370
[  172.233420]  xfs_efi_item_free+0x21/0x40 [xfs]
[  172.233435]  __xfs_efi_release+0x4e/0x60 [xfs]
[  172.233449]  xfs_efi_release+0x50/0x70 [xfs]
[  172.233463]  xfs_efd_item_committed+0x22/0x40 [xfs]
[  172.233479]  xfs_trans_committed_bulk+0xcf/0x290 [xfs]
[  172.233494]  xlog_cil_committed+0x37/0x110 [xfs]
[  172.233510]  xlog_state_do_callback+0x1b8/0x3f0 [xfs]
[  172.233525]  xlog_state_done_syncing+0xf2/0x110 [xfs]
[  172.233539]  xlog_iodone+0x87/0x110 [xfs]
[  172.233550]  xfs_buf_iodone_work+0x5e/0xd0 [xfs]
[  172.233554]  process_one_work+0x211/0x700
[  172.233556]  worker_thread+0x11d/0x3a0
[  172.233559]  kthread+0xed/0x100
[  172.233562]  ret_from_fork+0x7c/0xb0
[  172.233565] INFO: Slab 0xffffea0002aab100 objects=22 used=22 fp=0x          
(null) flags=0x20000000004080
[  172.233567] INFO: Object 0xffff8800aaac4e38 @offset=3640 
fp=0xffff8800aaac7058

[  172.233570] Bytes b4 ffff8800aaac4e28: 07 a2 fd ff 00 00 00 00 5a 5a 5a 5a 
5a 5a 5a 5a  ........ZZZZZZZZ
[  172.233573] Object ffff8800aaac4e38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233575] Object ffff8800aaac4e48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233577] Object ffff8800aaac4e58: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233579] Object ffff8800aaac4e68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233581] Object ffff8800aaac4e78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233583] Object ffff8800aaac4e88: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233586] Object ffff8800aaac4e98: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233588] Object ffff8800aaac4ea8: 6a 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  jkkkkkkkkkkkkkkk
[  172.233590] Object ffff8800aaac4eb8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233592] Object ffff8800aaac4ec8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233594] Object ffff8800aaac4ed8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233597] Object ffff8800aaac4ee8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233599] Object ffff8800aaac4ef8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233601] Object ffff8800aaac4f08: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233603] Object ffff8800aaac4f18: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233605] Object ffff8800aaac4f28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233608] Object ffff8800aaac4f38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233610] Object ffff8800aaac4f48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233612] Object ffff8800aaac4f58: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233614] Object ffff8800aaac4f68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233616] Object ffff8800aaac4f78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233618] Object ffff8800aaac4f88: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233620] Object ffff8800aaac4f98: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233622] Object ffff8800aaac4fa8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b 6b  kkkkkkkkkkkkkkkk
[  172.233625] Object ffff8800aaac4fb8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 
6b 6b a5  kkkkkkkkkkkkkkk.
[  172.233627] Redzone ffff8800aaac4fc8: bb bb bb bb bb bb bb bb                
          ........
[  172.233629] Padding ffff8800aaac5108: 5a 5a 5a 5a 5a 5a 5a 5a                
          ZZZZZZZZ
[  172.233632] CPU: 1 PID: 1658 Comm: gcc Tainted: G    B        3.9.0+ #1 
[loadavg: 0.68 0.43 0.17 4/333 1660]
[  172.233636] Hardware name: LENOVO 2356JK8/2356JK8, BIOS G7ET92WW (2.52 ) 
02/18/2013
[  172.233638]  ffffea0002aab100 ffff8800a4b03918 ffffffff815f5588 
ffff8800a4b03968
[  172.233644]  ffffffff81185944 0000000000000008 ffff880000000001 
ffffffff81078016
[  172.233648]  ffff8800aaac4ea8 ffff8800aaac4ea9 ffff880115937cc0 
000000000000006b
[  172.233653] Call Trace:
[  172.233658]  [<ffffffff815f5588>] dump_stack+0x19/0x1b
[  172.233662]  [<ffffffff81185944>] print_trailer+0x154/0x210
[  172.233666]  [<ffffffff81078016>] ? 
perf_trace_sched_process_template+0xe6/0x100
[  172.233669]  [<ffffffff81185b3f>] check_bytes_and_report+0xcf/0x110
[  172.233673]  [<ffffffff81187037>] check_object+0x1e7/0x260
[  172.233676]  [<ffffffff811864f7>] ? check_slab+0x87/0x130
[  172.233691]  [<ffffffffa0543fa7>] ? kmem_zone_alloc+0x67/0xf0 [xfs]
[  172.233694]  [<ffffffff815f2ea3>] alloc_debug_processing+0x76/0x118
[  172.233697]  [<ffffffff815f3b8d>] __slab_alloc+0x468/0x52c
[  172.233716]  [<ffffffffa0592787>] ? xfs_iext_bno_to_ext+0x97/0x180 [xfs]
[  172.233731]  [<ffffffffa0543fa7>] ? kmem_zone_alloc+0x67/0xf0 [xfs]
[  172.233735]  [<ffffffff8118a754>] kmem_cache_alloc+0x2b4/0x320
[  172.233748]  [<ffffffffa0543fa7>] ? kmem_zone_alloc+0x67/0xf0 [xfs]
[  172.233762]  [<ffffffffa0543fa7>] kmem_zone_alloc+0x67/0xf0 [xfs]
[  172.233776]  [<ffffffffa0544044>] kmem_zone_zalloc+0x14/0x40 [xfs]
[  172.233792]  [<ffffffffa05ae031>] xfs_efi_init+0x41/0xa0 [xfs]
[  172.233809]  [<ffffffffa05b32b8>] xfs_trans_get_efi+0x58/0x90 [xfs]
[  172.233825]  [<ffffffffa055a0a6>] xfs_bmap_finish+0x76/0x1b0 [xfs]
[  172.233844]  [<ffffffffa058ef0d>] xfs_itruncate_extents+0x2cd/0x610 [xfs]
[  172.233859]  [<ffffffffa0540e41>] xfs_inactive+0x401/0x530 [xfs]
[  172.233874]  [<ffffffffa053dbec>] xfs_fs_evict_inode+0x8c/0x1b0 [xfs]
[  172.233877]  [<ffffffff811c1033>] evict+0xa3/0x1a0
[  172.233880]  [<ffffffff811c19c5>] iput+0xf5/0x180
[  172.233883]  [<ffffffff811bcf18>] dput+0x208/0x2f0
[  172.233887]  [<ffffffff811b43ae>] SYSC_renameat+0x3be/0x430
[  172.233892]  [<ffffffff810ad32e>] ? lock_release_holdtime.part.30+0xee/0x170
[  172.233895]  [<ffffffff8107c18d>] ? get_parent_ip+0xd/0x50
[  172.233899]  [<ffffffff810afe7d>] ? trace_hardirqs_on+0xd/0x10
[  172.233904]  [<ffffffff8100e358>] ? syscall_trace_enter+0x18/0x230
[  172.233907]  [<ffffffff811b67fe>] SyS_renameat+0xe/0x10
[  172.233911]  [<ffffffff811b681b>] SyS_rename+0x1b/0x20
[  172.233914]  [<ffffffff816051d4>] tracesys+0xdd/0xe2
[  172.233917] FIX xfs_efi_item: Restoring 
0xffff8800aaac4ea8-0xffff8800aaac4ea8=0x6b
[  172.233919] FIX xfs_efi_item: Marking all objects used

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