thr3ads.net - Btrfs devel - NULL Pointer Dereference While Scrubbing [Jan 2012]

If this information is useful, please help other people find it:
Share via:

Mitch Harder

2012-Jan-03 17:35 UTC

NULL Pointer Dereference While Scrubbing

I''ve recently run into a kernel "NULL pointer dereference"
while
scrubbing a partition that had picked up error.

I''m running kernel 3.2.0-rc7.  I''d had a power outage, and
noticed an
error in a partition when running btrfsck after reboot:

# ./btrfsck /dev/sdb5
root 5 inode 19772 errors 400
found 3123032064 bytes used err is 1
total csum bytes: 2476808
total tree bytes: 586649600
total fs tree bytes: 554622976
btree space waste bytes: 145500448
file data blocks allocated: 2536382464
 referenced 5143969792
Btrfs Btrfs v0.19-dirty

I ran scrub (even though this partition is formated with single data
and metadata) to attempt to clear the error.  My system froze for
about 30 seconds (no HD activity, no mouse or keyboard movement), then
the scrub proceeded to run, but with the following errors in dmesg:

[ 3683.056829] ------------[ cut here ]------------
[ 3683.056848] WARNING: at lib/kref.c:34 kref_get+0x20/0x30()
[ 3683.056851] Hardware name:
[ 3683.056853] Modules linked in: nvidia(P) nvidia_agp i2c_nforce2
[ 3683.056861] Pid: 4349, comm: btrfs-readahead Tainted: P           O
3.2.0-rc7-git-local+ #1
[ 3683.056865] Call Trace:
[ 3683.056873]  [<c102ca5d>] warn_slowpath_common+0x6d/0xa0
[ 3683.056878]  [<c13acbc0>] ? kref_get+0x20/0x30
[ 3683.056882]  [<c13acbc0>] ? kref_get+0x20/0x30
[ 3683.056886]  [<c102caad>] warn_slowpath_null+0x1d/0x20
[ 3683.056889]  [<c13acbc0>] kref_get+0x20/0x30
[ 3683.056898]  [<c135b89d>] reada_pick_zone+0x11d/0x160
[ 3683.056903]  [<c135c491>] reada_start_machine_worker+0x201/0x2f0
[ 3683.056910]  [<c133a4f9>] worker_loop+0x89/0x370
[ 3683.056914]  [<c133a470>] ? btrfs_queue_worker+0x250/0x250
[ 3683.056919]  [<c10468f4>] kthread+0x74/0x80
[ 3683.056922]  [<c1046880>] ? kthread_worker_fn+0x110/0x110
[ 3683.056929]  [<c1766036>] kernel_thread_helper+0x6/0xd
[ 3683.056932] ---[ end trace f9c0e14dc17013ed ]---
[ 3683.056941] BUG: unable to handle kernel NULL pointer dereference at 000000e4
[ 3683.056947] IP: [<c13aeeb4>] radix_tree_delete+0x14/0x250
[ 3683.056953] *pde = 00000000
[ 3683.056956] Oops: 0000 [#1]
[ 3683.056960] Modules linked in: nvidia(P) nvidia_agp i2c_nforce2
[ 3683.056965]
[ 3683.056968] Pid: 4349, comm: btrfs-readahead Tainted: P        W  O
3.2.0-rc7-git-local+ #1    /MS-6570
[ 3683.056973] EIP: 0060:[<c13aeeb4>] EFLAGS: 00010282 CPU: 0
[ 3683.056977] EIP is at radix_tree_delete+0x14/0x250
[ 3683.056980] EAX: 000000e4 EBX: f4cdf300 ECX: 0002c000 EDX: 000000e4
[ 3683.056983] ESI: c135b650 EDI: f4e0c400 EBP: f0851ec4 ESP: f0851e70
[ 3683.056986]  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 3683.056990] Process btrfs-readahead (pid: 4349, ti=f0850000
task=f4f0a9a0 task.ti=f0850000)
[ 3683.056993] Stack:
[ 3683.056994]  00000022 0002c000 000000e4 c175dfe7 c18aaeb0 f0851e94
f0851e9c c102c9ea
[ 3683.057001]  c18aaeb0 c17013ed c18f8971 f0851ec4 c102ca6d c18a740e
c1aeb034 00000022
[ 3683.057007]  c13acbc0 c13acbc0 f4cdf300 c135b650 f4e0c400 f0851ed0
c135b66e f4cdf334
[ 3683.057008] Call Trace:
[ 3683.057008]  [<c175dfe7>] ? printk+0x18/0x1a
[ 3683.057008]  [<c102c9ea>] ? print_oops_end_marker+0x2a/0x30
[ 3683.057008]  [<c17013ed>] ? xdr_process_buf+0x1d/0x1e0
[ 3683.057008]  [<c102ca6d>] ? warn_slowpath_common+0x7d/0xa0
[ 3683.057008]  [<c13acbc0>] ? kref_get+0x20/0x30
[ 3683.057008]  [<c13acbc0>] ? kref_get+0x20/0x30
[ 3683.057008]  [<c135b650>] ? reada_peer_zones_set_lock+0x60/0x60
[ 3683.057008]  [<c135b66e>] reada_zone_release+0x1e/0x30
[ 3683.057008]  [<c13acb6c>] kref_put+0x2c/0x60
[ 3683.057008]  [<c135b7b3>] reada_pick_zone+0x33/0x160
[ 3683.057008]  [<c135c441>] reada_start_machine_worker+0x1b1/0x2f0
[ 3683.057008]  [<c133a4f9>] worker_loop+0x89/0x370
[ 3683.057008]  [<c133a470>] ? btrfs_queue_worker+0x250/0x250
[ 3683.057008]  [<c10468f4>] kthread+0x74/0x80
[ 3683.057008]  [<c1046880>] ? kthread_worker_fn+0x110/0x110
[ 3683.057008]  [<c1766036>] kernel_thread_helper+0x6/0xd
[ 3683.057008] Code: 45 e0 8b 5d d8 83 c0 01 89 03 8b 45 e4 8d 65 f4
5b 5e 5f 5d c3 66 90 55 89 e5 57 56 53 83 ec 48 89 55 b0 89 c2 8b 4d
b0 89 45 b4 <8b> 00 3b 0c 85 48 c1 9e c1 0f 87 9d 01 00 00 8b 5a 08 85
c0 89
[ 3683.057008] EIP: [<c13aeeb4>] radix_tree_delete+0x14/0x250 SS:ESP
0068:f0851e70
[ 3683.057008] CR2: 00000000000000e4
[ 3683.057149] ---[ end trace f9c0e14dc17013ee ]---
[ 3684.019436] checksum error at logical 24911872 on dev /dev/sdb5,
sector 48656: metadata leaf (level 0) in tree 5
[ 3684.019445] checksum error at logical 24911872 on dev /dev/sdb5,
sector 48656: metadata leaf (level 0) in tree 5
[ 3684.019451] btrfs: unable to fixup (regular) error at logical 24911872
[ 3684.675210] checksum error at logical 36139008 on dev /dev/sdb5,
sector 70584: metadata leaf (level 0) in tree 5
[ 3684.675219] checksum error at logical 36139008 on dev /dev/sdb5,
sector 70584: metadata leaf (level 0) in tree 5
[ 3684.675226] btrfs: unable to fixup (regular) error at logical 36139008
[ 3684.990958] checksum error at logical 43667456 on dev /dev/sdb5,
sector 85288: metadata leaf (level 0) in tree 5
[ 3684.990967] checksum error at logical 43667456 on dev /dev/sdb5,
sector 85288: metadata leaf (level 0) in tree 5
[ 3684.990973] btrfs: unable to fixup (regular) error at logical 43667456
[ 3685.206384] checksum error at logical 46813184 on dev /dev/sdb5,
sector 91432: metadata leaf (level 0) in tree 5
[ 3685.206393] checksum error at logical 46813184 on dev /dev/sdb5,
sector 91432: metadata leaf (level 0) in tree 5
[ 3685.206399] btrfs: unable to fixup (regular) error at logical 46813184
[ 3685.353048] checksum error at logical 49352704 on dev /dev/sdb5,
sector 96392: metadata leaf (level 0) in tree 5
[ 3685.353056] checksum error at logical 49352704 on dev /dev/sdb5,
sector 96392: metadata leaf (level 0) in tree 5
[ 3685.353062] btrfs: unable to fixup (regular) error at logical 49352704
[ 3685.892964] checksum error at logical 57888768 on dev /dev/sdb5,
sector 113064: metadata leaf (level 0) in tree 5
[ 3685.892973] checksum error at logical 57888768 on dev /dev/sdb5,
sector 113064: metadata leaf (level 0) in tree 5
[ 3685.892980] btrfs: unable to fixup (regular) error at logical 57888768
[ 3686.337182] checksum error at logical 65646592 on dev /dev/sdb5,
sector 128216: metadata leaf (level 0) in tree 5
[ 3686.337191] checksum error at logical 65646592 on dev /dev/sdb5,
sector 128216: metadata leaf (level 0) in tree 5
[ 3686.337197] btrfs: unable to fixup (regular) error at logical 65646592
[ 3686.700049] checksum error at logical 72007680 on dev /dev/sdb5,
sector 140640: metadata leaf (level 0) in tree 5
[ 3686.700058] checksum error at logical 72007680 on dev /dev/sdb5,
sector 140640: metadata leaf (level 0) in tree 5
[ 3686.700064] btrfs: unable to fixup (regular) error at logical 72007680
[ 3688.378882] checksum error at logical 103575552 on dev /dev/sdb5,
sector 202296: metadata leaf (level 0) in tree 5
[ 3688.378891] checksum error at logical 103575552 on dev /dev/sdb5,
sector 202296: metadata leaf (level 0) in tree 5
[ 3688.378898] btrfs: unable to fixup (regular) error at logical 103575552
[ 3690.011251] checksum error at logical 165928960 on dev /dev/sdb5,
sector 324080: metadata leaf (level 0) in tree 5
[ 3690.011260] checksum error at logical 165928960 on dev /dev/sdb5,
sector 324080: metadata leaf (level 0) in tree 5
[ 3690.011267] btrfs: unable to fixup (regular) error at logical 165928960
[ 3690.011529] checksum error at logical 165978112 on dev /dev/sdb5,
sector 324176: metadata leaf (level 0) in tree 5
[ 3690.011534] checksum error at logical 165978112 on dev /dev/sdb5,
sector 324176: metadata leaf (level 0) in tree 5
[ 3690.011540] btrfs: unable to fixup (regular) error at logical 165978112
[ 3690.011684] checksum error at logical 165998592 on dev /dev/sdb5,
sector 324216: metadata leaf (level 0) in tree 5
[ 3690.011689] checksum error at logical 165998592 on dev /dev/sdb5,
sector 324216: metadata leaf (level 0) in tree 5
[ 3690.011694] btrfs: unable to fixup (regular) error at logical 165998592
[ 3690.126322] checksum error at logical 169029632 on dev /dev/sdb5,
sector 330136: metadata leaf (level 0) in tree 5
[ 3690.126331] checksum error at logical 169029632 on dev /dev/sdb5,
sector 330136: metadata leaf (level 0) in tree 5
[ 3690.126338] btrfs: unable to fixup (regular) error at logical 169029632
[ 3690.126432] checksum error at logical 169033728 on dev /dev/sdb5,
sector 330144: metadata leaf (level 0) in tree 5
[ 3690.126438] checksum error at logical 169033728 on dev /dev/sdb5,
sector 330144: metadata leaf (level 0) in tree 5
[ 3690.126442] btrfs: unable to fixup (regular) error at logical 169033728
[ 3690.126502] checksum error at logical 169009152 on dev /dev/sdb5,
sector 330096: metadata leaf (level 0) in tree 5
[ 3690.126507] checksum error at logical 169009152 on dev /dev/sdb5,
sector 330096: metadata leaf (level 0) in tree 5
[ 3690.126512] btrfs: unable to fixup (regular) error at logical 169009152
[ 3690.126665] checksum error at logical 169058304 on dev /dev/sdb5,
sector 330192: metadata leaf (level 0) in tree 5
[ 3690.126670] checksum error at logical 169058304 on dev /dev/sdb5,
sector 330192: metadata leaf (level 0) in tree 5
[ 3690.126676] btrfs: unable to fixup (regular) error at logical 169058304
[ 3690.128027] checksum error at logical 169086976 on dev /dev/sdb5,
sector 330248: metadata leaf (level 0) in tree 5
[ 3690.128033] checksum error at logical 169086976 on dev /dev/sdb5,
sector 330248: metadata leaf (level 0) in tree 5
[ 3690.128038] btrfs: unable to fixup (regular) error at logical 169086976
[ 3690.128082] checksum error at logical 169095168 on dev /dev/sdb5,
sector 330264: metadata leaf (level 0) in tree 5
[ 3690.128087] checksum error at logical 169095168 on dev /dev/sdb5,
sector 330264: metadata leaf (level 0) in tree 5
[ 3690.128091] btrfs: unable to fixup (regular) error at logical 169095168
[ 3690.133167] checksum error at logical 169447424 on dev /dev/sdb5,
sector 330952: metadata leaf (level 0) in tree 5
[ 3690.133173] checksum error at logical 169447424 on dev /dev/sdb5,
sector 330952: metadata leaf (level 0) in tree 5
[ 3690.133179] btrfs: unable to fixup (regular) error at logical 169447424
[ 3746.413798] scrub_recheck_error: 30 callbacks suppressed
[ 3746.413816] checksum error at logical 2655461376 on dev /dev/sdb5,
sector 5186448: metadata leaf (level 0) in tree 5
[ 3746.413821] checksum error at logical 2655461376 on dev /dev/sdb5,
sector 5186448: metadata leaf (level 0) in tree 5
[ 3746.413827] scrub_fixup: 30 callbacks suppressed
[ 3746.413830] btrfs: unable to fixup (regular) error at logical 2655461376
[ 3746.414483] checksum error at logical 2655469568 on dev /dev/sdb5,
sector 5186464: metadata leaf (level 0) in tree 5
[ 3746.414488] checksum error at logical 2655469568 on dev /dev/sdb5,
sector 5186464: metadata leaf (level 0) in tree 5
[ 3746.414494] btrfs: unable to fixup (regular) error at logical 2655469568
[ 3751.381940] checksum error at logical 2752249856 on dev /dev/sdb5,
sector 5375488: metadata leaf (level 0) in tree 5
[ 3751.381949] checksum error at logical 2752249856 on dev /dev/sdb5,
sector 5375488: metadata leaf (level 0) in tree 5
[ 3751.381956] btrfs: unable to fixup (regular) error at logical 2752249856
[ 3751.412726] checksum error at logical 2752675840 on dev /dev/sdb5,
sector 5376320: metadata leaf (level 0) in tree 2
[ 3751.412732] checksum error at logical 2752675840 on dev /dev/sdb5,
sector 5376320: metadata leaf (level 0) in tree 2
[ 3751.412738] btrfs: unable to fixup (regular) error at logical 2752675840
[ 3751.443102] checksum error at logical 2753064960 on dev /dev/sdb5,
sector 5377080: metadata leaf (level 0) in tree 5
[ 3751.443108] checksum error at logical 2753064960 on dev /dev/sdb5,
sector 5377080: metadata leaf (level 0) in tree 5
[ 3751.443114] btrfs: unable to fixup (regular) error at logical 2753064960
[ 3751.456643] checksum error at logical 2753290240 on dev /dev/sdb5,
sector 5377520: metadata leaf (level 0) in tree 7
[ 3751.456649] checksum error at logical 2753290240 on dev /dev/sdb5,
sector 5377520: metadata leaf (level 0) in tree 7
[ 3751.456655] btrfs: unable to fixup (regular) error at logical 2753290240
[ 3751.554606] checksum error at logical 2754314240 on dev /dev/sdb5,
sector 5379520: metadata leaf (level 0) in tree 5
[ 3751.554614] checksum error at logical 2754314240 on dev /dev/sdb5,
sector 5379520: metadata leaf (level 0) in tree 5
[ 3751.554621] btrfs: unable to fixup (regular) error at logical 2754314240
[ 3751.557164] checksum error at logical 2754494464 on dev /dev/sdb5,
sector 5379872: metadata leaf (level 0) in tree 5
[ 3751.557170] checksum error at logical 2754494464 on dev /dev/sdb5,
sector 5379872: metadata leaf (level 0) in tree 5
[ 3751.557175] btrfs: unable to fixup (regular) error at logical 2754494464
[ 3751.557201] checksum error at logical 2754498560 on dev /dev/sdb5,
sector 5379880: metadata leaf (level 0) in tree 5
[ 3751.557206] checksum error at logical 2754498560 on dev /dev/sdb5,
sector 5379880: metadata leaf (level 0) in tree 5
[ 3751.557211] btrfs: unable to fixup (regular) error at logical 2754498560
[ 3751.557395] checksum error at logical 2754506752 on dev /dev/sdb5,
sector 5379896: metadata leaf (level 0) in tree 5
[ 3751.557401] checksum error at logical 2754506752 on dev /dev/sdb5,
sector 5379896: metadata leaf (level 0) in tree 5
[ 3751.557406] btrfs: unable to fixup (regular) error at logical 2754506752
[ 3751.557759] checksum error at logical 2754609152 on dev /dev/sdb5,
sector 5380096: metadata leaf (level 0) in tree 5
[ 3751.557764] checksum error at logical 2754609152 on dev /dev/sdb5,
sector 5380096: metadata leaf (level 0) in tree 5
[ 3751.557770] btrfs: unable to fixup (regular) error at logical 2754609152
[ 3751.618837] checksum error at logical 2755813376 on dev /dev/sdb5,
sector 5382448: metadata leaf (level 0) in tree 5
[ 3751.618845] checksum error at logical 2755813376 on dev /dev/sdb5,
sector 5382448: metadata leaf (level 0) in tree 5
[ 3751.618851] btrfs: unable to fixup (regular) error at logical 2755813376
[ 3751.647986] checksum error at logical 2756648960 on dev /dev/sdb5,
sector 5384080: metadata leaf (level 0) in tree 5
[ 3751.647993] checksum error at logical 2756648960 on dev /dev/sdb5,
sector 5384080: metadata leaf (level 0) in tree 5
[ 3751.647999] btrfs: unable to fixup (regular) error at logical 2756648960
[ 3751.835659] checksum error at logical 2761150464 on dev /dev/sdb5,
sector 5392872: metadata leaf (level 0) in tree 5
[ 3751.835668] checksum error at logical 2761150464 on dev /dev/sdb5,
sector 5392872: metadata leaf (level 0) in tree 5
[ 3751.835675] btrfs: unable to fixup (regular) error at logical 2761150464
[ 3765.083326] scrub_recheck_error: 33 callbacks suppressed
[ 3765.083344] checksum error at logical 3010654208 on dev /dev/sdb5,
sector 5880184: metadata leaf (level 0) in tree 5
[ 3765.083350] checksum error at logical 3010654208 on dev /dev/sdb5,
sector 5880184: metadata leaf (level 0) in tree 5
[ 3765.083356] scrub_fixup: 33 callbacks suppressed
[ 3765.083359] btrfs: unable to fixup (regular) error at logical 3010654208
[ 3768.289359] checksum error at logical 3055210496 on dev /dev/sdb5,
sector 5967208: metadata leaf (level 0) in tree 5
[ 3768.289368] checksum error at logical 3055210496 on dev /dev/sdb5,
sector 5967208: metadata leaf (level 0) in tree 5
[ 3768.289376] btrfs: unable to fixup (regular) error at logical 3055210496
[ 3768.301971] checksum error at logical 3055714304 on dev /dev/sdb5,
sector 5968192: metadata leaf (level 0) in tree 5
[ 3768.301978] checksum error at logical 3055714304 on dev /dev/sdb5,
sector 5968192: metadata leaf (level 0) in tree 5
[ 3768.301984] btrfs: unable to fixup (regular) error at logical 3055714304
[ 3769.060539] checksum error at logical 3069796352 on dev /dev/sdb5,
sector 5995696: metadata leaf (level 0) in tree 5
[ 3769.060548] checksum error at logical 3069796352 on dev /dev/sdb5,
sector 5995696: metadata leaf (level 0) in tree 5
[ 3769.060555] btrfs: unable to fixup (regular) error at logical 3069796352
[ 3770.123327] checksum error at logical 3082948608 on dev /dev/sdb5,
sector 6021384: metadata leaf (level 0) in tree 2
[ 3770.123336] checksum error at logical 3082948608 on dev /dev/sdb5,
sector 6021384: metadata leaf (level 0) in tree 2
[ 3770.123343] btrfs: unable to fixup (regular) error at logical 3082948608
[ 3771.175326] checksum error at logical 3095752704 on dev /dev/sdb5,
sector 6046392: metadata leaf (level 0) in tree 5
[ 3771.175335] checksum error at logical 3095752704 on dev /dev/sdb5,
sector 6046392: metadata leaf (level 0) in tree 5
[ 3771.175342] btrfs: unable to fixup (regular) error at logical 3095752704
[ 3771.188587] checksum error at logical 3096076288 on dev /dev/sdb5,
sector 6047024: metadata leaf (level 0) in tree 5
[ 3771.188595] checksum error at logical 3096076288 on dev /dev/sdb5,
sector 6047024: metadata leaf (level 0) in tree 5
[ 3771.188602] btrfs: unable to fixup (regular) error at logical 3096076288
[ 3771.189479] checksum error at logical 3096113152 on dev /dev/sdb5,
sector 6047096: metadata leaf (level 0) in tree 5
[ 3771.189485] checksum error at logical 3096113152 on dev /dev/sdb5,
sector 6047096: metadata leaf (level 0) in tree 5
[ 3771.189490] btrfs: unable to fixup (regular) error at logical 3096113152
[ 3771.189739] checksum error at logical 3096166400 on dev /dev/sdb5,
sector 6047200: metadata leaf (level 0) in tree 5
[ 3771.189745] checksum error at logical 3096166400 on dev /dev/sdb5,
sector 6047200: metadata leaf (level 0) in tree 5
[ 3771.189750] btrfs: unable to fixup (regular) error at logical 3096166400
[ 3771.190468] checksum error at logical 3096186880 on dev /dev/sdb5,
sector 6047240: metadata leaf (level 0) in tree 5
[ 3771.190473] checksum error at logical 3096186880 on dev /dev/sdb5,
sector 6047240: metadata leaf (level 0) in tree 5
[ 3771.190479] btrfs: unable to fixup (regular) error at logical 3096186880
[ 3793.715498] scrub_recheck_error: 17 callbacks suppressed
[ 3793.715515] checksum error at logical 4169457664 on dev /dev/sdb5,
sector 8143472: metadata leaf (level 0) in tree 5
[ 3793.715520] checksum error at logical 4169457664 on dev /dev/sdb5,
sector 8143472: metadata leaf (level 0) in tree 5
[ 3793.715526] scrub_fixup: 17 callbacks suppressed
[ 3793.715529] btrfs: unable to fixup (regular) error at logical 4169457664
[ 3793.715554] checksum error at logical 4169461760 on dev /dev/sdb5,
sector 8143480: metadata leaf (level 0) in tree 5
[ 3793.715559] checksum error at logical 4169461760 on dev /dev/sdb5,
sector 8143480: metadata leaf (level 0) in tree 5
[ 3793.715563] btrfs: unable to fixup (regular) error at logical 4169461760
[ 3793.805872] checksum error at logical 4171509760 on dev /dev/sdb5,
sector 8147480: metadata leaf (level 0) in tree 5
[ 3793.805880] checksum error at logical 4171509760 on dev /dev/sdb5,
sector 8147480: metadata leaf (level 0) in tree 5
[ 3793.805886] btrfs: unable to fixup (regular) error at logical 4171509760
[ 3793.805912] checksum error at logical 4171513856 on dev /dev/sdb5,
sector 8147488: metadata leaf (level 0) in tree 5
[ 3793.805917] checksum error at logical 4171513856 on dev /dev/sdb5,
sector 8147488: metadata leaf (level 0) in tree 5
[ 3793.806488] btrfs: unable to fixup (regular) error at logical 4171513856
[ 3793.809168] checksum error at logical 4171751424 on dev /dev/sdb5,
sector 8147952: metadata leaf (level 0) in tree 5
[ 3793.809173] checksum error at logical 4171751424 on dev /dev/sdb5,
sector 8147952: metadata leaf (level 0) in tree 5
[ 3793.809179] btrfs: unable to fixup (regular) error at logical 4171751424
[ 3793.810449] checksum error at logical 4171821056 on dev /dev/sdb5,
sector 8148088: metadata leaf (level 0) in tree 5
[ 3793.810455] checksum error at logical 4171821056 on dev /dev/sdb5,
sector 8148088: metadata leaf (level 0) in tree 5
[ 3793.810460] btrfs: unable to fixup (regular) error at logical 4171821056
[ 3793.845851] checksum error at logical 4172443648 on dev /dev/sdb5,
sector 8149304: metadata leaf (level 0) in tree 5
[ 3793.845858] checksum error at logical 4172443648 on dev /dev/sdb5,
sector 8149304: metadata leaf (level 0) in tree 5
[ 3793.845864] btrfs: unable to fixup (regular) error at logical 4172443648
[ 3793.846477] checksum error at logical 4172468224 on dev /dev/sdb5,
sector 8149352: metadata leaf (level 0) in tree 5
[ 3793.846482] checksum error at logical 4172468224 on dev /dev/sdb5,
sector 8149352: metadata leaf (level 0) in tree 5
[ 3793.846488] btrfs: unable to fixup (regular) error at logical 4172468224
[ 3793.846529] checksum error at logical 4172476416 on dev /dev/sdb5,
sector 8149368: metadata leaf (level 0) in tree 5
[ 3793.846534] checksum error at logical 4172476416 on dev /dev/sdb5,
sector 8149368: metadata leaf (level 0) in tree 5
[ 3793.846539] btrfs: unable to fixup (regular) error at logical 4172476416
[ 3793.858117] checksum error at logical 4172738560 on dev /dev/sdb5,
sector 8149880: metadata leaf (level 0) in tree 5
[ 3793.858123] checksum error at logical 4172738560 on dev /dev/sdb5,
sector 8149880: metadata leaf (level 0) in tree 5
[ 3793.858130] btrfs: unable to fixup (regular) error at logical 4172738560
[ 3798.869329] scrub_recheck_error: 39 callbacks suppressed
[ 3798.869348] checksum error at logical 4250955776 on dev /dev/sdb5,
sector 8302648: metadata leaf (level 0) in tree 5
[ 3798.869353] checksum error at logical 4250955776 on dev /dev/sdb5,
sector 8302648: metadata leaf (level 0) in tree 5
[ 3798.869359] scrub_fixup: 39 callbacks suppressed
[ 3798.869362] btrfs: unable to fixup (regular) error at logical 4250955776
[ 3809.626959] checksum error at logical 4611792896 on dev /dev/sdb5,
sector 9007408: metadata leaf (level 0) in tree 5
[ 3809.626968] checksum error at logical 4611792896 on dev /dev/sdb5,
sector 9007408: metadata leaf (level 0) in tree 5
[ 3809.626975] btrfs: unable to fixup (regular) error at logical 4611792896
[ 3812.056051] checksum error at logical 4688564224 on dev /dev/sdb5,
sector 9157352: metadata leaf (level 0) in tree 5
[ 3812.056060] checksum error at logical 4688564224 on dev /dev/sdb5,
sector 9157352: metadata leaf (level 0) in tree 5
[ 3812.056067] btrfs: unable to fixup (regular) error at logical 4688564224
[ 3812.082464] checksum error at logical 4689203200 on dev /dev/sdb5,
sector 9158600: metadata leaf (level 0) in tree 5
[ 3812.082470] checksum error at logical 4689203200 on dev /dev/sdb5,
sector 9158600: metadata leaf (level 0) in tree 5
[ 3812.082476] btrfs: unable to fixup (regular) error at logical 4689203200
[ 3861.356975] checksum error at logical 24911872 on dev /dev/sdb5,
sector 48656: metadata leaf (level 0) in tree 5
[ 3861.356984] checksum error at logical 24911872 on dev /dev/sdb5,
sector 48656: metadata leaf (level 0) in tree 5
[ 3861.356994] btrfs: unable to fixup (regular) error at logical 24911872
[ 3861.530708] checksum error at logical 36139008 on dev /dev/sdb5,
sector 70584: metadata leaf (level 0) in tree 5
[ 3861.530716] checksum error at logical 36139008 on dev /dev/sdb5,
sector 70584: metadata leaf (level 0) in tree 5
[ 3861.530726] btrfs: unable to fixup (regular) error at logical 36139008
[ 3861.646219] checksum error at logical 43667456 on dev /dev/sdb5,
sector 85288: metadata leaf (level 0) in tree 5
[ 3861.646228] checksum error at logical 43667456 on dev /dev/sdb5,
sector 85288: metadata leaf (level 0) in tree 5
[ 3861.646238] btrfs: unable to fixup (regular) error at logical 43667456
[ 3861.695751] checksum error at logical 46813184 on dev /dev/sdb5,
sector 91432: metadata leaf (level 0) in tree 5
[ 3861.695760] checksum error at logical 46813184 on dev /dev/sdb5,
sector 91432: metadata leaf (level 0) in tree 5
[ 3861.695770] btrfs: unable to fixup (regular) error at logical 46813184
[ 3861.733952] checksum error at logical 49352704 on dev /dev/sdb5,
sector 96392: metadata leaf (level 0) in tree 5
[ 3861.733961] checksum error at logical 49352704 on dev /dev/sdb5,
sector 96392: metadata leaf (level 0) in tree 5
[ 3861.733970] btrfs: unable to fixup (regular) error at logical 49352704
[ 3861.866820] checksum error at logical 57888768 on dev /dev/sdb5,
sector 113064: metadata leaf (level 0) in tree 5
[ 3861.866829] checksum error at logical 57888768 on dev /dev/sdb5,
sector 113064: metadata leaf (level 0) in tree 5
[ 3861.866838] btrfs: unable to fixup (regular) error at logical 57888768
[ 3862.003382] checksum error at logical 65646592 on dev /dev/sdb5,
sector 128216: metadata leaf (level 0) in tree 5
[ 3862.003391] checksum error at logical 65646592 on dev /dev/sdb5,
sector 128216: metadata leaf (level 0) in tree 5
[ 3862.003401] btrfs: unable to fixup (regular) error at logical 65646592
[ 3862.108576] checksum error at logical 72007680 on dev /dev/sdb5,
sector 140640: metadata leaf (level 0) in tree 5
[ 3862.108585] checksum error at logical 72007680 on dev /dev/sdb5,
sector 140640: metadata leaf (level 0) in tree 5
[ 3862.108595] btrfs: unable to fixup (regular) error at logical 72007680
[ 3862.614910] checksum error at logical 103575552 on dev /dev/sdb5,
sector 202296: metadata leaf (level 0) in tree 5
[ 3862.614919] checksum error at logical 103575552 on dev /dev/sdb5,
sector 202296: metadata leaf (level 0) in tree 5
[ 3862.614928] btrfs: unable to fixup (regular) error at logical 103575552
[ 3863.564788] checksum error at logical 165928960 on dev /dev/sdb5,
sector 324080: metadata leaf (level 0) in tree 5
[ 3863.564797] checksum error at logical 165928960 on dev /dev/sdb5,
sector 324080: metadata leaf (level 0) in tree 5
[ 3863.564807] btrfs: unable to fixup (regular) error at logical 165928960
[ 3894.931650] scrub_recheck_error: 39 callbacks suppressed
[ 3894.931668] checksum error at logical 2655461376 on dev /dev/sdb5,
sector 5186448: metadata leaf (level 0) in tree 5
[ 3894.931673] checksum error at logical 2655461376 on dev /dev/sdb5,
sector 5186448: metadata leaf (level 0) in tree 5
[ 3894.931683] scrub_fixup: 39 callbacks suppressed
[ 3894.931686] btrfs: unable to fixup (regular) error at logical 2655461376
[ 3894.931967] checksum error at logical 2655469568 on dev /dev/sdb5,
sector 5186464: metadata leaf (level 0) in tree 5
[ 3894.931972] checksum error at logical 2655469568 on dev /dev/sdb5,
sector 5186464: metadata leaf (level 0) in tree 5
[ 3894.931978] btrfs: unable to fixup (regular) error at logical 2655469568
[ 3896.415052] checksum error at logical 2752249856 on dev /dev/sdb5,
sector 5375488: metadata leaf (level 0) in tree 5
[ 3896.415061] checksum error at logical 2752249856 on dev /dev/sdb5,
sector 5375488: metadata leaf (level 0) in tree 5
[ 3896.415071] btrfs: unable to fixup (regular) error at logical 2752249856
[ 3896.421695] checksum error at logical 2752675840 on dev /dev/sdb5,
sector 5376320: metadata leaf (level 0) in tree 2
[ 3896.421701] checksum error at logical 2752675840 on dev /dev/sdb5,
sector 5376320: metadata leaf (level 0) in tree 2
[ 3896.421707] btrfs: unable to fixup (regular) error at logical 2752675840
[ 3896.427134] checksum error at logical 2753064960 on dev /dev/sdb5,
sector 5377080: metadata leaf (level 0) in tree 5
[ 3896.427140] checksum error at logical 2753064960 on dev /dev/sdb5,
sector 5377080: metadata leaf (level 0) in tree 5
[ 3896.427146] btrfs: unable to fixup (regular) error at logical 2753064960
[ 3896.431230] checksum error at logical 2753290240 on dev /dev/sdb5,
sector 5377520: metadata leaf (level 0) in tree 7
[ 3896.431236] checksum error at logical 2753290240 on dev /dev/sdb5,
sector 5377520: metadata leaf (level 0) in tree 7
[ 3896.431243] btrfs: unable to fixup (regular) error at logical 2753290240
[ 3896.447177] checksum error at logical 2754314240 on dev /dev/sdb5,
sector 5379520: metadata leaf (level 0) in tree 5
[ 3896.447185] checksum error at logical 2754314240 on dev /dev/sdb5,
sector 5379520: metadata leaf (level 0) in tree 5
[ 3896.447194] btrfs: unable to fixup (regular) error at logical 2754314240
[ 3896.449730] checksum error at logical 2754494464 on dev /dev/sdb5,
sector 5379872: metadata leaf (level 0) in tree 5
[ 3896.449736] checksum error at logical 2754494464 on dev /dev/sdb5,
sector 5379872: metadata leaf (level 0) in tree 5
[ 3896.449742] btrfs: unable to fixup (regular) error at logical 2754494464
[ 3896.449768] checksum error at logical 2754498560 on dev /dev/sdb5,
sector 5379880: metadata leaf (level 0) in tree 5
[ 3896.449773] checksum error at logical 2754498560 on dev /dev/sdb5,
sector 5379880: metadata leaf (level 0) in tree 5
[ 3896.449777] btrfs: unable to fixup (regular) error at logical 2754498560
[ 3896.449994] checksum error at logical 2754506752 on dev /dev/sdb5,
sector 5379896: metadata leaf (level 0) in tree 5
[ 3896.450000] checksum error at logical 2754506752 on dev /dev/sdb5,
sector 5379896: metadata leaf (level 0) in tree 5
[ 3896.450401] btrfs: unable to fixup (regular) error at logical 2754506752
[ 3900.116791] scrub_recheck_error: 37 callbacks suppressed
[ 3900.116809] checksum error at logical 3010654208 on dev /dev/sdb5,
sector 5880184: metadata leaf (level 0) in tree 5
[ 3900.116814] checksum error at logical 3010654208 on dev /dev/sdb5,
sector 5880184: metadata leaf (level 0) in tree 5
[ 3900.116893] scrub_fixup: 37 callbacks suppressed
[ 3900.116896] btrfs: unable to fixup (regular) error at logical 3010654208
[ 3900.806094] checksum error at logical 3055210496 on dev /dev/sdb5,
sector 5967208: metadata leaf (level 0) in tree 5
[ 3900.806103] checksum error at logical 3055210496 on dev /dev/sdb5,
sector 5967208: metadata leaf (level 0) in tree 5
[ 3900.806113] btrfs: unable to fixup (regular) error at logical 3055210496
[ 3900.813869] checksum error at logical 3055714304 on dev /dev/sdb5,
sector 5968192: metadata leaf (level 0) in tree 5
[ 3900.813875] checksum error at logical 3055714304 on dev /dev/sdb5,
sector 5968192: metadata leaf (level 0) in tree 5
[ 3900.813882] btrfs: unable to fixup (regular) error at logical 3055714304
[ 3901.031992] checksum error at logical 3069796352 on dev /dev/sdb5,
sector 5995696: metadata leaf (level 0) in tree 5
[ 3901.032001] checksum error at logical 3069796352 on dev /dev/sdb5,
sector 5995696: metadata leaf (level 0) in tree 5
[ 3901.032520] btrfs: unable to fixup (regular) error at logical 3069796352
[ 3901.238938] checksum error at logical 3082948608 on dev /dev/sdb5,
sector 6021384: metadata leaf (level 0) in tree 2
[ 3901.238947] checksum error at logical 3082948608 on dev /dev/sdb5,
sector 6021384: metadata leaf (level 0) in tree 2
[ 3901.238957] btrfs: unable to fixup (regular) error at logical 3082948608
[ 3901.434288] checksum error at logical 3095752704 on dev /dev/sdb5,
sector 6046392: metadata leaf (level 0) in tree 5
[ 3901.434297] checksum error at logical 3095752704 on dev /dev/sdb5,
sector 6046392: metadata leaf (level 0) in tree 5
[ 3901.434307] btrfs: unable to fixup (regular) error at logical 3095752704
[ 3901.438865] checksum error at logical 3096076288 on dev /dev/sdb5,
sector 6047024: metadata leaf (level 0) in tree 5
[ 3901.438870] checksum error at logical 3096076288 on dev /dev/sdb5,
sector 6047024: metadata leaf (level 0) in tree 5
[ 3901.438876] btrfs: unable to fixup (regular) error at logical 3096076288
[ 3901.439297] checksum error at logical 3096113152 on dev /dev/sdb5,
sector 6047096: metadata leaf (level 0) in tree 5
[ 3901.439303] checksum error at logical 3096113152 on dev /dev/sdb5,
sector 6047096: metadata leaf (level 0) in tree 5
[ 3901.439308] btrfs: unable to fixup (regular) error at logical 3096113152
[ 3901.440200] checksum error at logical 3096166400 on dev /dev/sdb5,
sector 6047200: metadata leaf (level 0) in tree 5
[ 3901.440275] checksum error at logical 3096166400 on dev /dev/sdb5,
sector 6047200: metadata leaf (level 0) in tree 5
[ 3901.440282] btrfs: unable to fixup (regular) error at logical 3096166400
[ 3901.440326] checksum error at logical 3096186880 on dev /dev/sdb5,
sector 6047240: metadata leaf (level 0) in tree 5
[ 3901.440331] checksum error at logical 3096186880 on dev /dev/sdb5,
sector 6047240: metadata leaf (level 0) in tree 5
[ 3901.440336] btrfs: unable to fixup (regular) error at logical 3096186880
[ 3913.771767] scrub_recheck_error: 17 callbacks suppressed
[ 3913.771784] checksum error at logical 4169457664 on dev /dev/sdb5,
sector 8143472: metadata leaf (level 0) in tree 5
[ 3913.771789] checksum error at logical 4169457664 on dev /dev/sdb5,
sector 8143472: metadata leaf (level 0) in tree 5
[ 3913.771796] scrub_fixup: 17 callbacks suppressed
[ 3913.771798] btrfs: unable to fixup (regular) error at logical 4169457664
[ 3913.771823] checksum error at logical 4169461760 on dev /dev/sdb5,
sector 8143480: metadata leaf (level 0) in tree 5
[ 3913.771828] checksum error at logical 4169461760 on dev /dev/sdb5,
sector 8143480: metadata leaf (level 0) in tree 5
[ 3913.771833] btrfs: unable to fixup (regular) error at logical 4169461760
[ 3913.803934] checksum error at logical 4171509760 on dev /dev/sdb5,
sector 8147480: metadata leaf (level 0) in tree 5
[ 3913.803941] checksum error at logical 4171509760 on dev /dev/sdb5,
sector 8147480: metadata leaf (level 0) in tree 5
[ 3913.803948] btrfs: unable to fixup (regular) error at logical 4171509760
[ 3913.803974] checksum error at logical 4171513856 on dev /dev/sdb5,
sector 8147488: metadata leaf (level 0) in tree 5
[ 3913.803979] checksum error at logical 4171513856 on dev /dev/sdb5,
sector 8147488: metadata leaf (level 0) in tree 5
[ 3913.803984] btrfs: unable to fixup (regular) error at logical 4171513856
[ 3913.807230] checksum error at logical 4171751424 on dev /dev/sdb5,
sector 8147952: metadata leaf (level 0) in tree 5
[ 3913.807236] checksum error at logical 4171751424 on dev /dev/sdb5,
sector 8147952: metadata leaf (level 0) in tree 5
[ 3913.807242] btrfs: unable to fixup (regular) error at logical 4171751424
[ 3913.808314] checksum error at logical 4171821056 on dev /dev/sdb5,
sector 8148088: metadata leaf (level 0) in tree 5
[ 3913.808390] checksum error at logical 4171821056 on dev /dev/sdb5,
sector 8148088: metadata leaf (level 0) in tree 5
[ 3913.808396] btrfs: unable to fixup (regular) error at logical 4171821056
[ 3913.817759] checksum error at logical 4172443648 on dev /dev/sdb5,
sector 8149304: metadata leaf (level 0) in tree 5
[ 3913.817765] checksum error at logical 4172443648 on dev /dev/sdb5,
sector 8149304: metadata leaf (level 0) in tree 5
[ 3913.817772] btrfs: unable to fixup (regular) error at logical 4172443648
[ 3913.818378] checksum error at logical 4172468224 on dev /dev/sdb5,
sector 8149352: metadata leaf (level 0) in tree 5
[ 3913.818384] checksum error at logical 4172468224 on dev /dev/sdb5,
sector 8149352: metadata leaf (level 0) in tree 5
[ 3913.818389] btrfs: unable to fixup (regular) error at logical 4172468224
[ 3913.818432] checksum error at logical 4172476416 on dev /dev/sdb5,
sector 8149368: metadata leaf (level 0) in tree 5
[ 3913.818438] checksum error at logical 4172476416 on dev /dev/sdb5,
sector 8149368: metadata leaf (level 0) in tree 5
[ 3913.818443] btrfs: unable to fixup (regular) error at logical 4172476416
[ 3913.822927] checksum error at logical 4172738560 on dev /dev/sdb5,
sector 8149880: metadata leaf (level 0) in tree 5
[ 3913.822933] checksum error at logical 4172738560 on dev /dev/sdb5,
sector 8149880: metadata leaf (level 0) in tree 5
[ 3913.822939] btrfs: unable to fixup (regular) error at logical 4172738560


The scrub output to the console was:# btrfs scrub start -B /mnt/gentoo/
scrub done for 75b9f12c-7f3a-4bb2-abe4-dc3da29558ed
	scrub started at Tue Jan  3 10:56:26 2012 and finished after 187 seconds
	total bytes scrubbed: 2.91GB with 352 errors
	error details: read=176 verify=176
	corrected errors: 0, uncorrectable errors: 176, unverified errors: 0
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Mitch Harder

2012-Jan-17 00:10 UTC

head link

Re: NULL Pointer Dereference While Scrubbing

On Tue, Jan 3, 2012 at 11:35 AM, Mitch Harder
<mitch.harder@sabayonlinux.org> wrote:> I''ve recently run into a kernel "NULL pointer
dereference" while
> scrubbing a partition that had picked up error.
>
I''m no longer getting the NULL pointer panic on this partition.

I''m running into a new BUG_ON() now resulting from a EFBIG error in
btrfs_add_system_chunk(...) (in fs/btrfs/volumes.c).

I''m not sure if it is still interesting to pursue this issue.  If I
could reproduce the NULL Pointer panic, it might be worth tracking
down.  But as it stands now, btrfs is handling the corruption as best
as it knows how.
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Mitch Harder

2012-Jan-17 16:35 UTC

head link

Re: NULL Pointer Dereference While Scrubbing

On Mon, Jan 16, 2012 at 6:10 PM, Mitch Harder
<mitch.harder@sabayonlinux.org> wrote:> On Tue, Jan 3, 2012 at 11:35 AM, Mitch Harder
> <mitch.harder@sabayonlinux.org> wrote:
>> I''ve recently run into a kernel "NULL pointer
dereference" while
>> scrubbing a partition that had picked up error.
>>
>
> I''m no longer getting the NULL pointer panic on this partition.
>
> I''m running into a new BUG_ON() now resulting from a EFBIG error
in
> btrfs_add_system_chunk(...) (in fs/btrfs/volumes.c).
>
> I''m not sure if it is still interesting to pursue this issue.  If
I
> could reproduce the NULL Pointer panic, it might be worth tracking
> down.  But as it stands now, btrfs is handling the corruption as best
> as it knows how.
I''ve been able to clear this BUG_ON() after applying Miao
Xie''s
"[PATCH] Btrfs: fix enospc error caused by wrong checks of the chunk"
on top of the rebased integration branch with a 3.2.1 kernel.

Btrfsck still shows the same inode errors 400 message, but I can
complete a balance of the filesystem without encountering a BUG_ON().
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Jan Schmidt

2012-Jan-17 16:41 UTC

head link

Re: NULL Pointer Dereference While Scrubbing

On 17.01.2012 17:35, Mitch Harder wrote:> I''ve been able to clear this BUG_ON() after applying Miao
Xie''s
> "[PATCH] Btrfs: fix enospc error caused by wrong checks of the
chunk"
> on top of the rebased integration branch with a 3.2.1 kernel.
> 
> Btrfsck still shows the same inode errors 400 message, but I can
> complete a balance of the filesystem without encountering a BUG_ON().
Did you also try to scrub the device again (which I thought that''s was
this thread is all about)?

However, I''m not sure whether it''s worth investigating any
further, as
the bug seems to be readahead-related which is presumably being replaced
soon.

-Jan
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Jan Schmidt

2012-Jan-17 16:42 UTC

head link

Re: NULL Pointer Dereference While Scrubbing

On 17.01.2012 17:41, Jan Schmidt wrote:> However, I''m not sure whether it''s worth investigating
any further, as
> the bug seems to be readahead-related which is presumably being replaced
> soon.
Ah, and it''s solved anyway, so scratch that :-)

-Jan
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Mitch Harder

2012-Jan-17 17:03 UTC

head link

Re: NULL Pointer Dereference While Scrubbing

On Tue, Jan 17, 2012 at 10:41 AM, Jan Schmidt <list.btrfs@jan-o-sch.net>
wrote:> On 17.01.2012 17:35, Mitch Harder wrote:
>> I''ve been able to clear this BUG_ON() after applying Miao
Xie''s
>> "[PATCH] Btrfs: fix enospc error caused by wrong checks of the
chunk"
>> on top of the rebased integration branch with a 3.2.1 kernel.
>>
>> Btrfsck still shows the same inode errors 400 message, but I can
>> complete a balance of the filesystem without encountering a BUG_ON().
>
> Did you also try to scrub the device again (which I thought that''s
was
> this thread is all about)?
>
> However, I''m not sure whether it''s worth investigating
any further, as
> the bug seems to be readahead-related which is presumably being replaced
> soon.
>
> -Jan
You''re correct about my original problem being with scrub.  I had lost
track of the multiple ways to make the partition BUG.

I''ve re-run scrub, and scrub now proceeds without error also, but it
still leaves the inode 400 error from btrfsck.

I am beginning to suspect that the partition had another inconsistency
that didn''t have anything to do the the btrfsck reported error, but
was causing btrfs to run into a BUG when running various operations on
the disk.

The current Scrub results are:

# btrfs scrub start -B /mnt/gentoo/
scrub done for 75b9f12c-7f3a-4bb2-abe4-dc3da29558ed
	scrub started at Tue Jan 17 10:52:26 2012 and finished after 57 seconds
	total bytes scrubbed: 2.91GB with 0 errors

Which still leaves the following btrfsck result:

# btrfsck /dev/sdb5
root 5 inode 19772 errors 400
found 3125092352 bytes used err is 1
total csum bytes: 2476744
total tree bytes: 588513280
total fs tree bytes: 554622976
btree space waste bytes: 146782986
file data blocks allocated: 2536579072
 referenced 5144166400
Btrfs Btrfs v0.19-dirty
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Jan Schmidt

2012-Jan-17 17:08 UTC

head link

Re: NULL Pointer Dereference While Scrubbing

On 17.01.2012 18:03, Mitch Harder wrote:> You''re correct about my original problem being with scrub.  I had
lost
> track of the multiple ways to make the partition BUG.
> 
> I''ve re-run scrub, and scrub now proceeds without error also, but
it
> still leaves the inode 400 error from btrfsck.
> 
> I am beginning to suspect that the partition had another inconsistency
> that didn''t have anything to do the the btrfsck reported error,
but
> was causing btrfs to run into a BUG when running various operations on
> the disk.
Sounds plausible.
> The current Scrub results are:
> 
> # btrfs scrub start -B /mnt/gentoo/
> scrub done for 75b9f12c-7f3a-4bb2-abe4-dc3da29558ed
> 	scrub started at Tue Jan 17 10:52:26 2012 and finished after 57 seconds
> 	total bytes scrubbed: 2.91GB with 0 errors
> 
> Which still leaves the following btrfsck result:
> 
> # btrfsck /dev/sdb5
> root 5 inode 19772 errors 400
> found 3125092352 bytes used err is 1
> total csum bytes: 2476744
> total tree bytes: 588513280
> total fs tree bytes: 554622976
> btree space waste bytes: 146782986
> file data blocks allocated: 2536579072
>  referenced 5144166400
> Btrfs Btrfs v0.19-dirty
Alright, that''s fine. Scrub isn''t expected to find those.
(I_ERR_FILE_NBYTES_WRONG)

-Jan
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Btrfs devel - Jan 2012 - NULL Pointer Dereference While Scrubbing

NULL Pointer Dereference While Scrubbing

Re: NULL Pointer Dereference While Scrubbing

Re: NULL Pointer Dereference While Scrubbing

Re: NULL Pointer Dereference While Scrubbing

Re: NULL Pointer Dereference While Scrubbing

Re: NULL Pointer Dereference While Scrubbing

Re: NULL Pointer Dereference While Scrubbing