Hello On my HP Compaq dc5800 with Ubuntu 13.04 and their 3.8.0-19-lowlatency kernel, I've got quite some kernel traces in the syslog. You can find them below or at http://pastebin.com/bLXPBX67 (to avoid line breaks…).
These kernel traces all begin with: WARNING: at fs/btrfs/free-space-cache.c:921 __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]() Most of the time, it starts with: Call Trace: [<ffffffff8105a8df>] warn_slowpath_common+0x7f/0xc0 But once, I also had: Call Trace: [<ffffffff81138e59>] warn_alloc_failed+0xe9/0x140 It happens most of the time, when I copied something on a btrfs. But it also happened right now, when the system was basically idle. The fs is on a "normal" SATA disk (ie. no SSD or usb or such). I created the btrfs on the linux 3.8.0-19-lowlatency kernel with: a@ewzw032:~$ btrfs version Btrfs v0.20-rc1 Line 921 of free-space-cache.c (-> http://pastebin.com/yNQMPG3P) is the WARN_ON(1) in this block: /* Make sure we can fit our crcs into the first page */ if (io_ctl.check_crcs && (io_ctl.num_pages * sizeof(u32)) >= PAGE_CACHE_SIZE) { WARN_ON(1); goto out_nospc; } Well - what can be done about it? Here are my kernel traces: Apr 29 12:59:31 ewzw032 kernel: [ 6275.016478] ------------[ cut here ]------------ Apr 29 12:59:31 ewzw032 kernel: [ 6275.016507] WARNING: at fs/btrfs/free-space-cache.c:921 __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]() Apr 29 12:59:31 ewzw032 kernel: [ 6275.016509] Hardware name: HP Compaq dc5800 Microtower Apr 29 12:59:31 ewzw032 kernel: [ 6275.016510] Modules linked in: arc4 md4 parport_pc ppdev bnep rfcomm bluetooth nls_utf8 cifs fscache ext2 snd_hda_codec_analog snd_hda_intel snd_hda_codec coretemp tpm_infineon snd_hwdep snd_pcm snd_page_alloc dm_multipath snd_seq_midi snd_seq_midi_event snd_rawmidi kvm_intel kvm snd_seq snd_seq_device snd_timer scsi_dh snd psmouse soundcore gpio_ich hp_wmi sparse_keymap serio_raw lpc_ich mei wmi microcode tpm_tis nvidia(POF) mac_hid lp parport btrfs zlib_deflate libcrc32c hid_generic usbhid hid usb_storage floppy e1000e Apr 29 12:59:31 ewzw032 kernel: [ 6275.016537] Pid: 4608, comm: btrfs-transacti Tainted: PF W O 3.8.0-19-lowlatency #13-Ubuntu Apr 29 12:59:31 ewzw032 kernel: [ 6275.016538] Call Trace: Apr 29 12:59:31 ewzw032 kernel: [ 6275.016544] [<ffffffff8105a8df>] warn_slowpath_common+0x7f/0xc0 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016546] [<ffffffff8105a93a>] warn_slowpath_null+0x1a/0x20 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016556] [<ffffffffa0107c29>] __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016559] [<ffffffff81096c40>] ? set_next_entity+0x80/0x90 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016570] [<ffffffffa0107fa5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016579] [<ffffffffa00bcc07>] btrfs_write_dirty_block_groups+0x527/0x620 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016588] [<ffffffffa012ed52>] commit_cowonly_roots+0x15a/0x22c [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016598] [<ffffffffa00cc4ec>] btrfs_commit_transaction+0x62c/0xb00 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016601] [<ffffffff81080070>] ? finish_wait+0x80/0x80 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016610] [<ffffffffa00c54cd>] transaction_kthread+0x1ad/0x230 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016620] [<ffffffffa00c5320>] ? write_dev_flush.part.107+0xc0/0xc0 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016622] [<ffffffff8107f890>] kthread+0xc0/0xd0 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016624] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016628] [<ffffffff816dfdec>] ret_from_fork+0x7c/0xb0 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016629] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016631] ---[ end trace 3afa1c596d559b57 ]--- Apr 29 13:05:18 ewzw032 kernel: [ 6621.268618] ------------[ cut here ]------------ Apr 29 13:05:18 ewzw032 kernel: [ 6621.268648] WARNING: at fs/btrfs/free-space-cache.c:921 __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]() Apr 29 13:05:18 ewzw032 kernel: [ 6621.268650] Hardware name: HP Compaq dc5800 Microtower Apr 29 13:05:18 ewzw032 kernel: [ 6621.268651] Modules linked in: arc4 md4 parport_pc ppdev bnep rfcomm bluetooth nls_utf8 cifs fscache ext2 snd_hda_codec_analog snd_hda_intel snd_hda_codec coretemp tpm_infineon snd_hwdep snd_pcm snd_page_alloc dm_multipath snd_seq_midi snd_seq_midi_event snd_rawmidi kvm_intel kvm snd_seq snd_seq_device snd_timer scsi_dh snd psmouse soundcore gpio_ich hp_wmi sparse_keymap serio_raw lpc_ich mei wmi microcode tpm_tis nvidia(POF) mac_hid lp parport btrfs zlib_deflate libcrc32c hid_generic usbhid hid usb_storage floppy e1000e Apr 29 13:05:18 ewzw032 kernel: [ 6621.268678] Pid: 4608, comm: btrfs-transacti Tainted: PF W O 3.8.0-19-lowlatency #13-Ubuntu Apr 29 13:05:18 ewzw032 kernel: [ 6621.268679] Call Trace: Apr 29 13:05:18 ewzw032 kernel: [ 6621.268685] [<ffffffff8105a8df>] warn_slowpath_common+0x7f/0xc0 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268687] [<ffffffff8105a93a>] warn_slowpath_null+0x1a/0x20 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268698] [<ffffffffa0107c29>] __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268708] [<ffffffffa00c713d>] ? btrfs_buffer_uptodate+0x6d/0x80 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268711] [<ffffffff81096c40>] ? set_next_entity+0x80/0x90 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268721] [<ffffffffa0107fa5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268731] [<ffffffffa00bcc07>] btrfs_write_dirty_block_groups+0x527/0x620 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268739] [<ffffffffa012ed52>] commit_cowonly_roots+0x15a/0x22c [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268749] [<ffffffffa00cc4ec>] btrfs_commit_transaction+0x62c/0xb00 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268752] [<ffffffff81080070>] ? finish_wait+0x80/0x80 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268761] [<ffffffffa00c54cd>] transaction_kthread+0x1ad/0x230 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268771] [<ffffffffa00c5320>] ? write_dev_flush.part.107+0xc0/0xc0 [btrfs] Apr 29 13:05:18 ewzw032 kernel: [ 6621.268773] [<ffffffff8107f890>] kthread+0xc0/0xd0 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268775] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268778] [<ffffffff816dfdec>] ret_from_fork+0x7c/0xb0 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268780] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 13:05:18 ewzw032 kernel: [ 6621.268781] ---[ end trace 3afa1c596d559b62 ]--- Apr 29 13:05:55 ewzw032 kernel: [ 6658.063049] ------------[ cut here ]------------ Apr 29 17:29:59 ewzw032 kernel: [22502.923913] ------------[ cut here ]------------ Apr 29 17:29:59 ewzw032 kernel: [22502.923956] WARNING: at fs/btrfs/free-space-cache.c:921 __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]() Apr 29 17:29:59 ewzw032 kernel: [22502.923957] Hardware name: HP Compaq dc5800 Microtower Apr 29 17:29:59 ewzw032 kernel: [22502.923958] Modules linked in: arc4 md4 parport_pc ppdev bnep rfcomm bluetooth nls_utf8 cifs fscache ext2 snd_hda_codec_analog snd_hda_intel snd_hda_codec coretemp tpm_infineon snd_hwdep snd_pcm snd_page_alloc dm_multipath snd_seq_midi snd_seq_midi_event snd_rawmidi kvm_intel kvm snd_seq snd_seq_device snd_timer scsi_dh snd psmouse soundcore gpio_ich hp_wmi sparse_keymap serio_raw lpc_ich mei wmi microcode tpm_tis nvidia(POF) mac_hid lp parport btrfs zlib_deflate libcrc32c hid_generic usbhid hid usb_storage floppy e1000e Apr 29 17:29:59 ewzw032 kernel: [22502.923987] Pid: 13579, comm: btrfs-transacti Tainted: PF W O 3.8.0-19-lowlatency #13-Ubuntu Apr 29 17:29:59 ewzw032 kernel: [22502.923988] Call Trace: Apr 29 17:29:59 ewzw032 kernel: [22502.923999] [<ffffffff8105a8df>] warn_slowpath_common+0x7f/0xc0 Apr 29 17:29:59 ewzw032 kernel: [22502.924013] [<ffffffff8105a93a>] warn_slowpath_null+0x1a/0x20 Apr 29 17:29:59 ewzw032 kernel: [22502.924024] [<ffffffffa0107c29>] __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924027] [<ffffffff810979bc>] ? update_curr+0xec/0x1a0 Apr 29 17:29:59 ewzw032 kernel: [22502.924029] [<ffffffff8109d2ee>] ? dequeue_pushable_task+0x2e/0x70 Apr 29 17:29:59 ewzw032 kernel: [22502.924040] [<ffffffffa0107fa5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924050] [<ffffffffa00bcc07>] btrfs_write_dirty_block_groups+0x527/0x620 [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924059] [<ffffffffa012ed52>] commit_cowonly_roots+0x15a/0x22c [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924069] [<ffffffffa00cc4ec>] btrfs_commit_transaction+0x62c/0xb00 [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924072] [<ffffffff81080070>] ? finish_wait+0x80/0x80 Apr 29 17:29:59 ewzw032 kernel: [22502.924082] [<ffffffffa00c54cd>] transaction_kthread+0x1ad/0x230 [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924091] [<ffffffffa00c5320>] ? write_dev_flush.part.107+0xc0/0xc0 [btrfs] Apr 29 17:29:59 ewzw032 kernel: [22502.924093] [<ffffffff8107f890>] kthread+0xc0/0xd0 Apr 29 17:29:59 ewzw032 kernel: [22502.924095] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 17:29:59 ewzw032 kernel: [22502.924099] [<ffffffff816dfdec>] ret_from_fork+0x7c/0xb0 Apr 29 17:29:59 ewzw032 kernel: [22502.924101] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 17:29:59 ewzw032 kernel: [22502.924261] ---[ end trace 3afa1c596d559b6b ]--- Apr 29 17:30:45 ewzw032 kernel: [22548.083953] btrfs-transacti: page allocation failure: order:5, mode:0x10c050 Apr 29 17:30:45 ewzw032 kernel: [22548.083958] Pid: 13579, comm: btrfs-transacti Tainted: PF W O 3.8.0-19-lowlatency #13-Ubuntu Apr 29 17:30:45 ewzw032 kernel: [22548.083960] Call Trace: Apr 29 17:30:45 ewzw032 kernel: [22548.083968] [<ffffffff81138e59>] warn_alloc_failed+0xe9/0x140 Apr 29 17:30:45 ewzw032 kernel: [22548.083970] [<ffffffff8113b6e6>] ? drain_local_pages+0x16/0x20 Apr 29 17:30:45 ewzw032 kernel: [22548.083974] [<ffffffff810bc82d>] ? on_each_cpu_mask+0x8d/0xb0 Apr 29 17:30:45 ewzw032 kernel: [22548.083976] [<ffffffff8113cd5c>] __alloc_pages_nodemask+0x70c/0x950 Apr 29 17:30:45 ewzw032 kernel: [22548.083979] [<ffffffff811787d8>] alloc_pages_current+0xb8/0x180 Apr 29 17:30:45 ewzw032 kernel: [22548.083981] [<ffffffff81137fce>] __get_free_pages+0xe/0x50 Apr 29 17:30:45 ewzw032 kernel: [22548.083984] [<ffffffff811807d9>] kmalloc_order_trace+0x39/0xf0 Apr 29 17:30:45 ewzw032 kernel: [22548.083986] [<ffffffff81182fc4>] __kmalloc+0x184/0x190 Apr 29 17:30:45 ewzw032 kernel: [22548.084004] [<ffffffffa0106fa1>] io_ctl_init+0x91/0x140 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084032] [<ffffffffa01075de>] __btrfs_write_out_cache+0x6e/0x9a0 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084035] [<ffffffff81096c40>] ? set_next_entity+0x80/0x90 Apr 29 17:30:45 ewzw032 kernel: [22548.084045] [<ffffffffa0107fa5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084055] [<ffffffffa00bcc07>] btrfs_write_dirty_block_groups+0x527/0x620 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084064] [<ffffffffa012ed52>] commit_cowonly_roots+0x15a/0x22c [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084074] [<ffffffffa00cc4ec>] btrfs_commit_transaction+0x62c/0xb00 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084077] [<ffffffff81080070>] ? finish_wait+0x80/0x80 Apr 29 17:30:45 ewzw032 kernel: [22548.084086] [<ffffffffa00c54cd>] transaction_kthread+0x1ad/0x230 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084096] [<ffffffffa00c5320>] ? write_dev_flush.part.107+0xc0/0xc0 [btrfs] Apr 29 17:30:45 ewzw032 kernel: [22548.084098] [<ffffffff8107f890>] kthread+0xc0/0xd0 Apr 29 17:30:45 ewzw032 kernel: [22548.084103] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 17:30:45 ewzw032 kernel: [22548.084106] [<ffffffff816dfdec>] ret_from_fork+0x7c/0xb0 Apr 29 17:30:45 ewzw032 kernel: [22548.084108] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 29 17:30:45 ewzw032 kernel: [22548.084301] Mem-Info: Apr 29 17:30:45 ewzw032 kernel: [22548.084303] Node 0 DMA per-cpu: Apr 29 17:30:45 ewzw032 kernel: [22548.084305] CPU 0: hi: 0, btch: 1 usd: 0 Apr 29 17:30:45 ewzw032 kernel: [22548.084307] CPU 1: hi: 0, btch: 1 usd: 0 Apr 29 17:30:45 ewzw032 kernel: [22548.084308] Node 0 DMA32 per-cpu: Apr 29 17:30:45 ewzw032 kernel: [22548.084309] CPU 0: hi: 186, btch: 31 usd: 0 Apr 29 17:30:45 ewzw032 kernel: [22548.084311] CPU 1: hi: 186, btch: 31 usd: 0 Apr 29 17:30:45 ewzw032 kernel: [22548.084311] Node 0 Normal per-cpu: Apr 29 17:30:45 ewzw032 kernel: [22548.084313] CPU 0: hi: 186, btch: 31 usd: 0 Apr 29 17:30:45 ewzw032 kernel: [22548.084314] CPU 1: hi: 186, btch: 31 usd: 166 Apr 29 17:30:45 ewzw032 kernel: [22548.084317] active_anon:733665 inactive_anon:281330 isolated_anon:0 Apr 29 17:30:45 ewzw032 kernel: [22548.084317] active_file:238672 inactive_file:562643 isolated_file:0 Apr 29 17:30:45 ewzw032 kernel: [22548.084317] unevictable:8 dirty:17770 writeback:48555 unstable:0 Apr 29 17:30:45 ewzw032 kernel: [22548.084317] free:49760 slab_reclaimable:25129 slab_unreclaimable:14172 Apr 29 17:30:45 ewzw032 kernel: [22548.084317] mapped:52305 shmem:6399 pagetables:18147 bounce:0 Apr 29 17:30:45 ewzw032 kernel: [22548.084317] free_cma:0 Apr 29 17:30:45 ewzw032 kernel: [22548.084320] Node 0 DMA free:15900kB min:128kB low:160kB high:192kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15652kB managed:15908kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes Apr 29 17:30:45 ewzw032 kernel: [22548.084324] lowmem_reserve[]: 0 3496 7969 7969 Apr 29 17:30:45 ewzw032 kernel: [22548.084327] Node 0 DMA32 free:99044kB min:29592kB low:36988kB high:44388kB active_anon:478348kB inactive_anon:501448kB active_file:499548kB inactive_file:1787932kB unevictable:16kB isolated(anon):0kB isolated(file):0kB present:3580096kB managed:3539248kB mlocked:16kB dirty:20784kB writeback:5060kB mapped:68704kB shmem:6976kB slab_reclaimable:29648kB slab_unreclaimable:9508kB kernel_stack:696kB pagetables:10948kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Apr 29 17:30:45 ewzw032 kernel: [22548.084332] lowmem_reserve[]: 0 0 4473 4473 Apr 29 17:30:45 ewzw032 kernel: [22548.084334] Node 0 Normal free:84212kB min:37860kB low:47324kB high:56788kB active_anon:2456312kB inactive_anon:623872kB active_file:455140kB inactive_file:462640kB unevictable:16kB isolated(anon):0kB isolated(file):0kB present:4580352kB managed:4520784kB mlocked:16kB dirty:50296kB writeback:189160kB mapped:140516kB shmem:18620kB slab_reclaimable:70868kB slab_unreclaimable:47172kB kernel_stack:6384kB pagetables:61640kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:28 all_unreclaimable? no Apr 29 17:30:45 ewzw032 kernel: [22548.084339] lowmem_reserve[]: 0 0 0 0 Apr 29 17:30:45 ewzw032 kernel: [22548.084341] Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096kB (M) = 15900kB Apr 29 17:30:45 ewzw032 kernel: [22548.084351] Node 0 DMA32: 7768*4kB (UEM) 4055*8kB (UEM) 1990*16kB (UM) 2*32kB (R) 0*64kB 1*128kB (R) 0*256kB 1*512kB (R) 1*1024kB (R) 1*2048kB (R) 0*4096kB = 99128kB Apr 29 17:30:45 ewzw032 kernel: [22548.084361] Node 0 Normal: 6110*4kB (UEM) 6160*8kB (UEM) 402*16kB (UEM) 11*32kB (UE) 0*64kB 1*128kB (R) 1*256kB (R) 1*512kB (R) 1*1024kB (R) 1*2048kB (R) 0*4096kB = 84472kB Apr 29 17:30:45 ewzw032 kernel: [22548.084371] 807776 total pagecache pages Apr 29 17:30:45 ewzw032 kernel: [22548.084372] 102 pages in swap cache Apr 29 17:30:45 ewzw032 kernel: [22548.084374] Swap cache stats: add 7253, delete 7151, find 482/495 Apr 29 17:30:45 ewzw032 kernel: [22548.084375] Free swap = 10068048kB Apr 29 17:30:45 ewzw032 kernel: [22548.084376] Total swap = 10096632kB Apr 29 17:30:45 ewzw032 kernel: [22548.114584] 2080752 pages RAM Apr 29 17:30:45 ewzw032 kernel: [22548.114586] 129680 pages reserved Apr 29 17:30:45 ewzw032 kernel: [22548.114587] 1156729 pages shared Apr 29 17:30:45 ewzw032 kernel: [22548.114588] 1386865 pages non-shared Apr 29 17:31:39 ewzw032 kernel: [22602.788543] device fsid 10fd7c6c-59df-47db-8659-577dd8ff1fd8 devid 1 transid 953 /dev/dm-6 Apr 29 17:31:47 ewzw032 kernel: [22610.323304] btrfs: new size for /dev/dm-6 is 64424509440 Apr 30 08:07:05 ewzw032 kernel: [75128.655594] ------------[ cut here ]------------ Apr 30 08:07:05 ewzw032 kernel: [75128.655623] WARNING: at fs/btrfs/free-space-cache.c:921 __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]() Apr 30 08:07:05 ewzw032 kernel: [75128.655625] Hardware name: HP Compaq dc5800 Microtower Apr 30 08:07:05 ewzw032 kernel: [75128.655626] Modules linked in: arc4 md4 parport_pc ppdev bnep rfcomm bluetooth nls_utf8 cifs fscache ext2 snd_hda_codec_analog snd_hda_intel snd_hda_codec coretemp tpm_infineon snd_hwdep snd_pcm snd_page_alloc dm_multipath snd_seq_midi snd_seq_midi_event snd_rawmidi kvm_intel kvm snd_seq snd_seq_device snd_timer scsi_dh snd psmouse soundcore gpio_ich hp_wmi sparse_keymap serio_raw lpc_ich mei wmi microcode tpm_tis nvidia(POF) mac_hid lp parport btrfs zlib_deflate libcrc32c hid_generic usbhid hid usb_storage floppy e1000e Apr 30 08:07:05 ewzw032 kernel: [75128.655652] Pid: 13579, comm: btrfs-transacti Tainted: PF W O 3.8.0-19-lowlatency #13-Ubuntu Apr 30 08:07:05 ewzw032 kernel: [75128.655654] Call Trace: Apr 30 08:07:05 ewzw032 kernel: [75128.655659] [<ffffffff8105a8df>] warn_slowpath_common+0x7f/0xc0 Apr 30 08:07:05 ewzw032 kernel: [75128.655662] [<ffffffff8105a93a>] warn_slowpath_null+0x1a/0x20 Apr 30 08:07:05 ewzw032 kernel: [75128.655672] [<ffffffffa0107c29>] __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655675] [<ffffffff81096c40>] ? set_next_entity+0x80/0x90 Apr 30 08:07:05 ewzw032 kernel: [75128.655686] [<ffffffffa0107fa5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655695] [<ffffffffa00bcc07>] btrfs_write_dirty_block_groups+0x527/0x620 [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655704] [<ffffffffa012ed52>] commit_cowonly_roots+0x15a/0x22c [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655715] [<ffffffffa00cc4ec>] btrfs_commit_transaction+0x62c/0xb00 [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655717] [<ffffffff81080070>] ? finish_wait+0x80/0x80 Apr 30 08:07:05 ewzw032 kernel: [75128.655727] [<ffffffffa00c54cd>] transaction_kthread+0x1ad/0x230 [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655736] [<ffffffffa00c5320>] ? write_dev_flush.part.107+0xc0/0xc0 [btrfs] Apr 30 08:07:05 ewzw032 kernel: [75128.655738] [<ffffffff8107f890>] kthread+0xc0/0xd0 Apr 30 08:07:05 ewzw032 kernel: [75128.655740] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 30 08:07:05 ewzw032 kernel: [75128.655743] [<ffffffff816dfdec>] ret_from_fork+0x7c/0xb0 Apr 30 08:07:05 ewzw032 kernel: [75128.655745] [<ffffffff8107f7d0>] ? kthread_create_on_node+0x120/0x120 Apr 30 08:07:05 ewzw032 kernel: [75128.655747] ---[ end trace 3afa1c596d559b6d ]--- Thanks a lot, Alexander -- => Google+ => http://plus.skwar.me <== => Chat (Jabber/Google Talk) => a.sk...@gmail.com <== -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
