Hi, I woke up to my machine being crashed during the night; it complained about the CPU being hung, but looking a bit closer in the CPU backtraces, it seems that one of them had oopsed. I only have parts of this (it's salvaged from the serial console), but hopefully it will help someone track it down: [80844.094803] NMI backtrace for cpu 10 [80844.098596] CPU: 10 PID: 0 Comm: swapper/10 Tainted: G D 3.13.0-rc3 #1 [80844.106397] Hardware name: Supermicro X8DTL/X8DTL, BIOS 2.1a 12/30/2011 [80844.113744] task: ffff880623cec470 ti: ffff880623cf8000 task.ti: ffff880623cf8000 [80844.121639] RIP: 0010:[<ffffffff811eb256>] [<ffffffff811eb256>] intel_idle+0xa9/0xcd [80844.129913] RSP: 0018:ffff880623cf9df8 EFLAGS: 00000046 [80844.135439] RAX: 0000000000000010 RBX: 0000000000000004 RCX: 0000000000000001 [80844.142785] RDX: 0000000000000000 RSI: ffff880623cf9fd8 RDI: ffffffff817644f8 [80844.150131] RBP: ffff880623cf9e28 R08: 0000000000000008 R09: 00000000000003df [80844.157471] R10: 0000000000001255 R11: 0000000000001255 R12: 0000000000000003 [80844.164819] R13: 0000000000000010 R14: 0000000000000002 R15: 000000000000000a [80844.172165] FS: 0000000000000000(0000) GS:ffff880627340000(0000) knlGS:0000000000000000 [80844.180663] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [80844.186619] CR2: 00007fac73f82000 CR3: 00000000015d3000 CR4: 00000000000007e0 [80844.193964] Stack: [80844.196184] ffff880623cf9e28 0000000a8108293e ffff880627358d00 ffffffff81605890 [80844.204079] 0000497bd7b9735d ffffffff81605770 ffff880623cf9e88 ffffffff812c3664 [80844.211971] 0000000000000003 ffffffff81605770 0000000000000000 00000000000e5afa [80844.219874] Call Trace: [80844.222531] [<ffffffff812c3664>] cpuidle_enter_state+0x3a/0xac [80844.228656] [<ffffffff812c37d1>] cpuidle_idle_call+0xfb/0x1a0 [80844.234702] [<ffffffff8100916e>] arch_cpu_idle+0x9/0x18 [80844.24020x64/0x66 [80844.474220] [<ffffffff8106b247>] ? put_prev_task_fair+0x7f/0x2a8 [80844.480524] [<ffffffff81069ebb>] ? update_curr+0x81/0x130 [80844.486219] [<ffffffff811bf5cb>] ? number.isra.1+0x128/0x238 [80844.492181] [<ffffffff813acaa7>] do_page_fault+0x9/0xb [80844.497618] [<ffffffff813a9ee2>] page_fault+0x22/0x30 [80844.502963] [<ffffffff81059eb8>] ? kthread_data+0xc/0x11 [80844.508576] [<ffffffff810554bd>] ? wq_worker_sleeping+0xe/0x85 [80844.514703] [<ffffffff813a61bd>] __schedule+0x154/0x8eb [80844.520231] [<ffffffff811a505b>] ? put_io_context+0x5c/0x82 [80844.526104] [<ffffffff810fc245>] ? kmem_cache_free+0xe9/0x127 [80844.532150] [<ffffffff811a505b>] ? put_io_context+0x5c/0x82 [80844.538019] [<ffffffff811a512e>] ? put_io_context_active+0x99/0xa2 [80844.544494] [<ffffffff813a69f4>] schedule+0x6a/0x6c [80844.549668] [<ffffffff81041fcb>] do_exit+0x869/0x8c5 [80844.554938] [<ffffffff813aa859>] oops_end+0x7c/0x81 [80844.560114] [<ffffffff81004a32>] die+0x55/0x5f [80844.564856] [<ffffffff813aa42d>] do_general_protection+0x91/0x139 [80844.571244] [<ffffffff813a9e82>] general_protection+0x22/0x30 [80844.577294] [<ffffffffa02d87d4>] ? metadata_ll_load_ie+0x10/0x21 [dm_persistent_data] [80844.585615] [<ffffffffa02d8ed4>] ? sm_ll_lookup_bitmap+0x2e/0x7d [dm_persistent_data] [80844.593953] [<ffffffff813a859b>] ? mutex_unlock+0x9/0xb [80844.599479] [<ffffffffa02cd0f7>] ? dm_bufio_unlock+0x9/0xb [dm_bufio] [80844.606225] [<ffffffffa02d9c18>] sm_metadata_count_is_more_than[80845.321353] ffff880623d09e28 0000000e8108293e ffff8806273d8d00 ffffffff816058e8 [80845.329238] 0000497c8ed44ca6 ffffffff81605770 ffff880623d09e88 ffffffff812c3664 [80845.337132] 0000000000000004 ffffffff81605770 0000000000000000 00000000000e838a [80845.345033] Call Trace: [80845.347692] [<ffffffff812c3664>] cpuidle_enter_state+0x3a/0xac [80845.353816] [<ffffffff812c37d1>] cpuidle_idle_call+0xfb/0x1a0 [80845.359863] [<ffffffff8100916e>] arch_cpu_idle+0x9/0x18 [80845.365385] [<ffffffff8107982f>] cpu_startup_entry+0x117/0x1c8 [80845.371517] [<ffffffff8107971e>] ? cpu_startup_entry+0x6/0x1c8 [80845.377647] [<ffffffff81023597>] start_secondary+0x1b2/0x1b7 [80845.383608] Code: 86 38 e0 ff ff a8 08 75 22 48 8d 41 10 31 d2 48 89 d1 0f 01 c8 0f ae f0 48 8b 86 38 e0 ff ff a8 08 75 08 b1 01 4c 89 e8 0f 01 c9 <85> 1d ac a8 41 00 75 0e 48 8d 75 dc bf 05 00 00 00 e8 b9 c6 e9 /* Steinar */ -- Homepage: http://www.sesse.net/ -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
