http://oss.sgi.com/bugzilla/show_bug.cgi?id=906
Summary: Log corruption during mount.
Product: XFS
Version: unspecified
Platform: Other
OS/Version: Linux
Status: NEW
Severity: major
Priority: P3
Component: XFS kernel code
AssignedTo: xfs-masters@xxxxxxxxxxx
ReportedBy: unisist.roh@xxxxxxxxxxx
Estimated Hours: 0.0
Classification: Unclassified
Dear Members,
I'm using XFS based on STMicro SH4 based chip (STi7105).
and I have some issue on xfs log mounting.
1. chip : sh4 STi7105
2. HDD : 320GB USB HDD USB 2.0 port.
3. OS : Linux 2.6.23.17 + patch for fixing cache aliasing issue.
4. XFSProgs version : 3.1.1
mounting and repairing log in the below. This segmentation fault is caused by
the assert in xfs_alloc_increment function of xfs_alloc_btree.c file. The btree
level is equal to root level in the below code.
/*
* If we went off the root then we are seriously confused.
*/
ASSERT(lev < cur->bc_nlevels);
I want to know why and how this error can be happen. Would you please explain
this?
Thank you in advance.
===============================================================================
XFS mounting filesystem sdb3
Starting XFS recovery on filesystem: sdb3 (logdev: internal)
Unable to handle kernel NULL pointer dereference at virtual address 00000058
pc = 80830d8c
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: stsectoolfuse_ioctl(P) adf(P) asf(P) ath_hif_usb
embxloopback(P) embxmailbox(P) sec_nvram ath_htc_hst ath_dfs(P) embxshell(P)
sttkdma_ioctl(P) ath_rate_atheros(P) mme_host(P) embxshm(P) sttkdma_core(P)
stpti4_ioctl(P) stsectoolfuse_core(P) MHFSWRAPGPL_KERN ath_dev(P) xsr(P)
ath_hal(P) xsr_stl(P) stuart_core(P) MHFSWRAP_KERN(P) stsmart_core(P) wifitt(P)
umac stapi_core(P) CDIDVB_ST_REF(P)
Pid : 885, Comm: mount
PC is at xfs_alloc_increment+0x1ec/0x220
PC : 80830d8c SP : 8aeb5ad0 SR : 40008000 TEA : c15f3524 Tainted: P
R0 : 00000003 R1 : 00000040 R2 : 00000008 R3 : 000001ff
R4 : 8354c84c R5 : 00000001 R6 : 00000002 R7 : 00000001
R8 : 8354c894 R9 : 00000002 R10 : 8354c84c R11 : 8354c8ae
R12 : 00000000 R13 : 8aeb5a98 R14 : 8354c8b4
MACH: 00000000 MACL: 8aa92322 GBR : 004d2290 PR : 80830bd0
Call trace:
[<8082ea66>] xfs_free_ag_extent+0xe6/0x5c0
[<80a45f16>] __down_read+0x136/0x180
[<80830560>] xfs_free_extent+0x0/0xc0
[<808305e2>] xfs_free_extent+0x82/0xc0
[<80830560>] xfs_free_extent+0x0/0xc0
[<8087be00>] xfs_trans_log_efd_extent+0x0/0x60
[<8086eb1a>] xlog_recover_process_efi+0x25a/0x320
[<808706c8>] xlog_recover_process_efis+0x68/0xe0
[<8086e8c0>] xlog_recover_process_efi+0x0/0x320
[<8087ac20>] xfs_trans_next_ail+0x0/0x60
[<80870766>] xlog_recover_finish+0x26/0xe0
[<8087625c>] xfs_mountfs+0xc1c/0xe40
[<808876d2>] kmem_alloc+0x52/0x100
[<808877ec>] kmem_zalloc+0xc/0x40
[<808584c0>] xfs_fstrm_free_func+0x0/0xc0
[<8087f30a>] xfs_mount+0x3ca/0x420
[<80893318>] xfs_fs_fill_super+0x58/0x240
[<80774d20>] path_lookup+0x0/0x20
[<808ba576>] snprintf+0x16/0x40
[<80774d20>] path_lookup+0x0/0x20
[<807aab2e>] disk_name+0x8e/0xc0
[<80794f54>] sb_set_blocksize+0x14/0x40
[<8076ae32>] get_sb_bdev+0x152/0x1e0
[<807644a8>] __kmalloc+0x48/0x100
[<80892250>] xfs_fs_get_sb+0x10/0x20
[<808932c0>] xfs_fs_fill_super+0x0/0x240
[<8076a596>] vfs_kern_mount+0x36/0xc0
[<8076a66e>] do_kern_mount+0x2e/0xe0
[<80783390>] do_mount+0x130/0x6c0
[<80770900>] path_release+0x0/0x40
[<80712b3a>] enqueue_entity+0x9a/0x2a0
[<80712ee0>] sub_preempt_count+0x0/0xa0
[<80a45f16>] __down_read+0x136/0x180
[<80712a58>] dequeue_entity+0x58/0xa0
[<80712d66>] task_tick_fair+0x26/0x80
[<8070faa0>] do_page_fault+0x60/0x380
[<808b852e>] __up_read+0x4e/0xe0
[<8070e9ce>] fixup_exception+0xe/0x40
[<8070fb30>] do_page_fault+0xf0/0x380
[<80722b3a>] run_timer_softirq+0x1a/0x200
[<80763870>] kmem_cache_free+0x50/0xe0
[<8072c760>] __rcu_process_callbacks+0x60/0x2c0
[<8072c9ce>] rcu_process_callbacks+0xe/0x40
[<8071ea7a>] tasklet_action+0x7a/0xe0
[<8071e8e4>] __do_softirq+0x64/0x100
[<808bca60>] debug_smp_processor_id+0x0/0xc0
[<8071e8f6>] __do_softirq+0x76/0x100
[<8071e9e4>] do_softirq+0x64/0x80
[<80749020>] get_page_from_freelist+0x160/0x3e0
[<80748fc2>] get_page_from_freelist+0x102/0x3e0
[<8074980e>] __alloc_pages+0x6e/0x2e0
[<80749aa0>] __get_free_pages+0x20/0x60
[<80783986>] sys_mount+0x66/0xe0
[<80749740>] free_pages+0x0/0x60
[<807078f8>] syscall_call+0xa/0xe
[<80783920>] sys_mount+0x0/0xe0
Process: mount (pid: 885, stack limit = 8aeb4001)
Stack: (0x8aeb5ad0 to 0x8aeb6000)
5ac0: 8aeb5b14 00000000 8082ea66 83853400
5ae0: 8aeb5ae4 006bfa43 8adff680 8354c84c 8a5f8c78 00000000 00000002 00000000
5b00: 00020250 00000001 000000bc 004f8880 00000001 8a5ecc80 00000000 80a45f16
5b20: 80830560 808305e2 80830560 8087be00 000002f0 000001cc 8aeb5b4c 8a5f8c78
5b40: 00000000 000002f0 00000000 8a5f8c78 83853400 8adff680 83c37f78 00000000
5b60: 00000002 006bfa43 00000000 00000000 00000000 00000000 00000000 00000000
5b80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 8086eb1a
5ba0: 83c43e90 00000000 8a5f8c78 83c36edc 83c36ed4 0000001d 0000001c 00000007
5bc0: 00000006 ffffffe7 fffffff9 83c36ed0 02bc2417 00000000 00000002 00000000
5be0: 83c36e90 83853400 012814ea 01ffffff 00000003 00000002 04a053a7 00000000
5c00: 808706c8 8086e8c0 00001236 8087ac20 8aeb4000 8382631c 83853400 83c36e90
5c20: 00000001 80870766 8aeb5c90 83853440 8386ce20 838262e0 8382631c 00000000
5c40: 838262a0 8087625c 83853400 00000000 00000000 838536bc 00000002 00000000
5c60: 00000000 00000000 00000002 00000000 00000040 83fea8c0 25029d38 00000000
5c80: 00000000 00000000 00000001 00000000 808876d2 00000000 000002d0 00000058
5ca0: 00000001 808877ec 816f01e0 808584c0 1fef00fc dfdd5f0f 83853754 00000058
5cc0: 00000000 00000000 8a6acde0 8adffb00 8087f30a 816f01e0 83fea8c0 836ea000
5ce0: 8aeb5cc0 83853400 00000000 00000000 00000000 00000040 00000000 00000000
5d00: 80893318 80774d20 8adfd000 836ea000 83fea8c0 8ae55200 8adfd000 00000001
5d20: 00000002 8aeb5d93 0000000a ffffffff ffffffff 00000002 00000020 8aeb5d90
5d40: 8116028c ffffffff 80ab6bdc 808ba576 80774d20 8adfd000 816f0220 8aeb5d90
5d60: 8116028c 00000003 81160280 8aeb5d74 807aab2e 80794f54 8076ae32 816f0220
5d80: 8ae55200 816f01f8 00000001 8ae55200 33626473 00000000 00000001 00000000
5da0: 00000080 8381115c 807644a8 00000000 80892250 8a733000 8adfd000 00008000
5dc0: 8a4f7000 816f58a0 80b2b2e4 808932c0 816f58a0 8076a596 816f58a0 8076a66e
5de0: ffffffed 80b2b2e4 8adfd000 8a4f7000 00008000 80783390 00008000 00000000
5e00: 8a733000 80770900 00000000 00000000 80712b3a 8aeb5e30 83810e60 80712ee0
5e20: 8132d758 8132d3a8 80a45f16 83d718b4 83810e60 80712a58 8132d758 80712d66
5e40: 8070faa0 808b852e 8070e9ce 8aeb5f44 8070fb30 83810e60 000541a4 8aeb4000
5e60: 00000000 00000002 00000050 80722b3a 80763870 00000000 00000000 8072c760
5e80: 000000f0 8133335c 00000002 00000000 8072c9ce 813320e4 8071ea7a 813320e4
5ea0: 00000000 ffffff0f 8071e8e4 813320c0 808bca60 0000000a 8071e8f6 00000000
5ec0: 8133212c 8071e9e4 00008000 80749020 80748fc2 00000000 00000000 80b267bc
5ee0: 00000044 00000000 000200d0 80b26944 00000000 00000000 8074980e 80b26940
5f00: 80d330b8 816f57a0 83810e60 8ade8000 8aeb5f84 00000001 00000001 00000000
5f20: 00000080 8381115c 00000010 00000eb1 814abfa0 8a4f7000 000200d0 00008000
5f40: 80749aa0 00008000 00402c9c 00008000 7bc48eb1 8ade8000 80783986 00008000
5f60: 00402c9c 00008000 80749740 8ade8000 8aeb5f48 00000000 8adfd000 8a4f7000
5f80: 8a733000 8adfd000 807078f8 00000514 00000000 00000021 00000054 80783920
5fa0: 004d22c0 0044b4b4 ffffffff 00000015 7bc48eb1 7bc48ebb 004d3518 00008000
5fc0: 00008000 7bc48aa4 004d2298 004d22c0 004736cc 00402c9c 00008000 7bc489e0
5fe0: 0044b4bc 00423268 00008000 004d2290 00000000 0000004e 00000054 00000160
Segmentation fault
===============================================================================
===============================================================================
# xfs_repair -n /dev/sdb3
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- scan filesystem freespace and inode maps...
out-of-order bno btree record 416 (3934652 1) block 2/3
block (2,3934652-3934652) multiply claimed by bno space tree, state - 1
out-of-order bno btree record 417 (3938602 187) block 2/3
block (2,3938602-3938602) multiply claimed by bno space tree, state - 1
bno freespace btree block claimed (state 2), agno 2, bno 37902, suspect 0
cnt freespace btree block claimed (state 2), agno 2, bno 193058, suspect 0
block (2,924189-924189) multiply claimed by cnt space tree, state - 2
block (2,930675-930675) multiply claimed by cnt space tree, state - 2
block (2,930957-930957) multiply claimed by cnt space tree, state - 2
block (2,934623-934623) multiply claimed by cnt space tree, state - 2
block (2,934905-934905) multiply claimed by cnt space tree, state - 2
block (2,936315-936315) multiply claimed by cnt space tree, state - 2
block (2,936597-936597) multiply claimed by cnt space tree, state - 2
block (2,939135-939135) multiply claimed by cnt space tree, state - 2
block (2,939417-939417) multiply claimed by cnt space tree, state - 2
block (2,947595-947595) multiply claimed by cnt space tree, state - 2
block (2,948065-948065) multiply claimed by cnt space tree, state - 2
block (2,1028435-1028435) multiply claimed by cnt space tree, state - 2
block (2,1028906-1028906) multiply claimed by cnt space tree, state - 2
block (2,1031443-1031443) multiply claimed by cnt space tree, state - 2
out-of-order cnt btree record 238 (5971248 187) block 2/193054
out-of-order cnt btree record 239 (6003209 187) block 2/193054
out-of-order cnt btree record 240 (6100543 187) block 2/193054
out-of-order cnt btree record 241 (6192053 187) block 2/193054
out-of-order cnt btree record 242 (6237549 187) block 2/193054
out-of-order cnt btree record 243 (6292821 187) block 2/193054
out-of-order cnt btree record 244 (6388878 187) block 2/193054
cnt freespace btree block claimed (state 2), agno 2, bno 37955, suspect 0
agf_freeblks 12415209, counted 12444225 in ag 2
agi unlinked bucket 18 is 6331218 in ag 2 (inode=1080073042)
sb_ifree 162, counted 166
sb_fdblocks 69539078, counted 69568099
- found root inode chunk
Phase 3 - for each AG...
- scan (but don't clear) agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
- agno = 2
29560000: Badness in key lookup (length)
bp=(bno 313629760, len 16384 bytes) key=(bno 313629760, len 8192 bytes)
bmap rec out of order, inode 1080073043 entry 105 [o s c] [21592 71839253 188],
104 [19592 101671866 22184]
bad data fork in inode 1080073043
would have cleared inode 1080073043
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 0
- agno = 1
- agno = 2
entry "00000123" at block 0 offset 1104 in directory inode 1074348320
references free inode 1080073043
would clear inode number in entry at offset 1104...
bmap rec out of order, inode 1080073043 entry 105 [o s c] [21592 71839253 188],
104 [19592 101671866 22184]
bad data fork in inode 1080073043
would have cleared inode 1080073043
- agno = 3
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
- traversing filesystem ...
entry "00000123" in directory inode 1074348320 points to free inode 1080073043,
would junk entry
bad hash table for directory inode 1074348320 (no data entry): would rebuild
- traversal finished ...
- moving disconnected inodes to lost+found ...
disconnected inode 1080073042, would move to lost+found
Phase 7 - verify link counts...
would have reset inode 1080073042 nlinks from 0 to 1
No modify flag set, skipping filesystem flush and exiting.
===============================================================================
===============================================================================
# xfs_logprint -t /dev/sdb3
xfs_logprint:
data device: 0x813
log device: 0x813 daddr: 310464192 length: 303184
log tail: 303165 head: 303169 state: <DIRTY>
LOG REC AT LSN cycle 4 block 303165 (0x4, 0x4a03d)
============================================================================
TRANS: tid:0x83fa10ac type: #items:1 trans:0x0 q:0x434c08
EFD: cnt:1 total:1 a:0x42c6f8 len:52
EFD: #regs: 1 num_extents: 3 id: 0xffffffff81eaae90
LOG REC AT LSN cycle 4 block 303167 (0x4, 0x4a03f)
============================================================================
TRANS: tid:0x83fa1158 type:INACTIVE #items:3 trans:0x0 q:0x434c08
INO: cnt:2 total:2 a:0x42c6f8 len:52 a:0x42c760 len:96
INODE: #regs:2 ino:0x40609b52 flags:0x1 dsize:0
CORE inode:
BUF: cnt:2 total:2 a:0x42c7c8 len:28 a:0x42ca48 len:128
BUF: #regs:2 start blkno:0x157aba00 len:8 bmap size:2
flags:0x0
BUF DATA
EFI: cnt:1 total:1 a:0x42cad0 len:40
EFI: #regs:1 num_extents:2 id:0xffffffff8239e058
(s: 0x46bfa43, l: 752) (s: 0x46bfdef, l: 1128)
===============================================================================
Regards,
Ryan.
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