Cody P Schafer
2014-Feb-24 23:20 UTC
3.10.25: BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 in btrfs code
With suspicious OOM occurring before hand. I don't see anything that appears to change the btrfs code around this in later stable versions, but I haven't reproduced it their either. # uname -a Linux pizza 3.10.25-gentoo #4 SMP Sat Feb 15 14:37:40 PST 2014 x86_64 Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz GenuineIntel GNU/Linux ---- Trimmed Bug (full log attached) ---- Feb 24 02:41:46 [kernel] [734542.767957] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 Feb 24 02:41:46 [kernel] [734542.768006] IP: [<ffffffff81290b55>] submit_one_bio+0x35/0xa0 Feb 24 02:41:46 [kernel] [734542.768041] PGD 213821067 PUD 211a95067 PMD 0 Feb 24 02:41:46 [kernel] [734542.768069] Oops: 0000 [#1] SMP [...] Feb 24 02:41:46 [kernel] [734542.768827] CPU: 2 PID: 9834 Comm: firefox Not tainted 3.10.25-gentoo #4 Feb 24 02:41:46 [kernel] [734542.768860] Hardware name: LENOVO 4282A34/4282A34, BIOS 8BET44WW (1.24 ) 05/13/2011 Feb 24 02:41:46 [kernel] [734542.768897] task: ffff88020fe1c320 ti: ffff8802138e6000 task.ti: ffff8802138e6000 Feb 24 02:41:46 [kernel] [734542.768935] RIP: 0010:[<ffffffff81290b55>] [<ffffffff81290b55>] submit_one_bio+0x35/0xa0 Feb 24 02:41:46 [kernel] [734542.768979] RSP: 0018:ffff8802138e78d8 EFLAGS: 00010202 Feb 24 02:41:46 [kernel] [734542.769009] RAX: ffff880210c29090 RBX: ffff88020eea69d0 RCX: 0000000000020001 Feb 24 02:41:46 [kernel] [734542.769050] RDX: 0000000000000000 RSI: 0000000000001b3c RDI: 0000000000000000 Feb 24 02:41:46 [kernel] [734542.769090] RBP: ffff8802138e78e8 R08: 0000000000000000 R09: ffffea00035d3e00 Feb 24 02:41:46 [kernel] [734542.769129] R10: 0000000000000000 R11: 0000000fbbd08000 R12: 0000000000001000 Feb 24 02:41:46 [kernel] [734542.769168] R13: ffff88020eea69d0 R14: 0000000007dde840 R15: ffff8801f88ce440 Feb 24 02:41:46 [kernel] [734542.769207] FS: 00007ffd98901740(0000) GS:ffff88021e280000(0000) knlGS:0000000000000000 Feb 24 02:41:46 [kernel] [734542.769250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 24 02:41:46 [kernel] [734542.769282] CR2: 0000000000000030 CR3: 0000000211425000 CR4: 00000000000407e0 Feb 24 02:41:46 [kernel] [734542.769321] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Feb 24 02:41:46 [kernel] [734542.769359] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Feb 24 02:41:46 [kernel] [734542.769398] Stack: Feb 24 02:41:46 [kernel] [734542.769411] ffff8802138e7a98 0000000000001000 ffff8802138e7948 ffffffff81293bf2 Feb 24 02:41:46 [kernel] [734542.769459] ffff8801f88ce500 0000000000000001 0000000000000000 ffffea00035d3e80 Feb 24 02:41:46 [kernel] [734542.769506] 0000000001b61fff 0000000000001000 0000000001b61fff 0000000007dde840 Feb 24 02:41:46 [kernel] [734542.769557] Call Trace: Feb 24 02:41:46 [kernel] [734542.769577] [<ffffffff81293bf2>] submit_extent_page.isra.42+0xa2/0x1f0 Feb 24 02:41:46 [kernel] [734542.769619] [<ffffffff81294aeb>] __extent_read_full_page+0x29b/0x650 Feb 24 02:41:46 [kernel] [734542.769660] [<ffffffff81294060>] ? repair_eb_io_failure+0xb0/0xb0 Feb 24 02:41:46 [kernel] [734542.769700] [<ffffffff8127c710>] ? btrfs_fiemap+0x60/0x60 Feb 24 02:41:46 [kernel] [734542.769732] [<ffffffff8127c710>] ? btrfs_fiemap+0x60/0x60 Feb 24 02:41:46 [kernel] [734542.769763] [<ffffffff8127c710>] ? btrfs_fiemap+0x60/0x60 Feb 24 02:41:46 [kernel] [734542.769799] [<ffffffff81295d9d>] extent_readpages+0x12d/0x210 Feb 24 02:41:46 [kernel] [734542.769837] [<ffffffff8127b4ca>] btrfs_readpages+0x1a/0x20 Feb 24 02:41:46 [kernel] [734542.769875] [<ffffffff811135f7>] __do_page_cache_readahead+0x1c7/0x280 Feb 24 02:41:46 [kernel] [734542.769953] [<ffffffff8110b3a1>] filemap_fault+0x391/0x440 Feb 24 02:41:46 [kernel] [734542.769990] [<ffffffff81129735>] __do_fault+0x65/0x490 Feb 24 02:41:46 [kernel] [734542.770026] [<ffffffff8112c373>] handle_pte_fault+0x83/0x7d0 Feb 24 02:41:46 [kernel] [734542.770065] [<ffffffff8112df31>] handle_mm_fault+0x221/0x320 Feb 24 02:41:46 [kernel] [734542.770103] [<ffffffff8102ea56>] __do_page_fault+0x156/0x4c0 Feb 24 02:41:46 [kernel] [734542.770142] [<ffffffff811537c5>] ? SyS_newstat+0x25/0x30 Feb 24 02:41:46 [kernel] [734542.770178] [<ffffffff8102ede9>] do_page_fault+0x9/0x10 Feb 24 02:41:46 [kernel] [734542.770211] [<ffffffff817d3932>] page_fault+0x22/0x30 Feb 24 02:41:46 [kernel] [734542.770243] Code: 28 48 89 f3 4c 8b 56 48 48 83 e8 01 48 c1 e0 04 48 03 46 58 4c 8b 08 44 8b 40 0c 49 8b 71 10 48 c7 43 48 00 00 Feb 24 02:41:46 [kernel] [734542.770452] RIP [<ffffffff81290b55>] submit_one_bio+0x35/0xa0 Feb 24 02:41:46 [kernel] [734542.770491] RSP <ffff8802138e78d8> Feb 24 02:41:46 [kernel] [734542.770515] CR2: 0000000000000030 Feb 24 02:41:46 [kernel] [734542.785375] ---[ end trace c7535431d18e43ff ]---