100321 – General protection fault (stalls the machine) with jbd2 and raid456

Bug 100321 - General protection fault (stalls the machine) with jbd2 and raid456

Summary: General protection fault (stalls the machine) with jbd2 and raid456

Status:	NEW

Alias:	None

Product:	File System
Classification:	Unclassified
Component:	ext4 (show other bugs)
Hardware:	IA-64 Linux

Importance:	P1 blocking
Assignee:	fs_ext4@kernel-bugs.osdl.org

URL:
Keywords:

Depends on:
Blocks:

Reported:	2015-06-22 18:36 UTC by Jouni Karvo
Modified:	2016-02-18 15:37 UTC (History)
CC List:	3 users (show)

See Also:
Kernel Version:	Linux xpc 4.1.0-rc8 #2 SMP Sun Jun 21 11:16:21 EEST 2015 x86_64 x86_64 x86_64 GNU/Linux
Subsystem:
Regression:	No
Bisected commit-id:

Attachments
kernel log for another crash from today (84.52 KB, text/x-log) 2015-06-22 19:55 UTC, Jouni Karvo	Details
Add an attachment (proposed patch, testcase, etc.)

Description Jouni Karvo 2015-06-22 18:36:30 UTC

I have 5 sata disks running as raid6, on which lvm, on which server partitions and home partition.  Root partition is on separate raid1

From boot it takes from two hours to two days until the whole machine crashes.  This is the kern.log excerpt from the last crash this evening.

I am running 4.1-rc8 at the moment:

Linux xpc 4.1.0-rc8 #2 SMP Sun Jun 21 11:16:21 EEST 2015 x86_64 x86_64 x86_64 GNU/Linux

Jun 22 20:55:34 xpc kernel: [26361.124389] general protection fault: 0000 [#1] SMP 
Jun 22 20:55:34 xpc kernel: [26361.124408] Modules linked in: usblp binfmt_misc cfg80211 sp2 si2157 si2168 i2c_mux cx25840 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi joydev eeepc_wmi asus_wmi sparse_keymap mxm_wmi intel_rapl iosf_mbi x86_pkg_temp_thermal cx23885 intel_powerclamp kvm_intel altera_ci tda18271 altera_stapl kvm videobuf2_dvb tveeprom cx2341x snd_hda_intel dvb_core snd_hda_controller hid_logitech_hidpp rc_core i915 videobuf2_dma_sg crct10dif_pclmul snd_hda_codec videobuf2_memops crc32_pclmul videobuf2_core ghash_clmulni_intel snd_hda_core v4l2_common snd_hwdep aesni_intel videodev snd_seq_midi aes_x86_64 snd_seq_midi_event lrw media gf128mul snd_rawmidi snd_pcm glue_helper snd_seq ablk_helper drm_kms_helper cryptd snd_seq_device serio_raw snd_timer drm snd mei_me i2c_algo_bit soundcore mei lpc_ich shpchp mac_hid video wmi nfsd auth_rpcgss nfs_acl lockd grace sunrpc nct6775 hwmon_vid coretemp parport_pc ppdev lp parport autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 hid_logitech_dj raid0 e1000e usbhid ahci multipath ptp hid libahci psmouse pps_core linear
Jun 22 20:55:34 xpc kernel: [26361.124689] CPU: 6 PID: 797 Comm: jbd2/dm-1-8 Not tainted 4.1.0-rc8 #2
Jun 22 20:55:34 xpc kernel: [26361.124702] Hardware name: ASUS All Series/MAXIMUS VI EXTREME, BIOS 1603 08/15/2014
Jun 22 20:55:34 xpc kernel: [26361.124718] task: ffff8801b66e2840 ti: ffff8801b60a8000 task.ti: ffff8801b60a8000
Jun 22 20:55:34 xpc kernel: [26361.124732] RIP: 0010:[<ffffffffc0181490>]  [<ffffffffc0181490>] __find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.124754] RSP: 0018:ffff8801b60ab988  EFLAGS: 00010002
Jun 22 20:55:34 xpc kernel: [26361.124765] RAX: 0001880035c19000 RBX: 0000000000000000 RCX: 0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124779] RDX: 0000000000000b98 RSI: 000000000248cb98 RDI: ffff880035c07400
Jun 22 20:55:34 xpc kernel: [26361.124793] RBP: ffff8801b60ab9a8 R08: 0000000000000000 R09: 0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124807] R10: 0000000000000398 R11: 0000000000000003 R12: 000000000248cb98
Jun 22 20:55:34 xpc kernel: [26361.124820] R13: ffff880035c07400 R14: ffff880035c07414 R15: ffff880035c07400
Jun 22 20:55:34 xpc kernel: [26361.124834] FS:  0000000000000000(0000) GS:ffff8801bfb80000(0000) knlGS:0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124849] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun 22 20:55:34 xpc kernel: [26361.124860] CR2: 0000000000708470 CR3: 0000000001c0d000 CR4: 00000000001407e0
Jun 22 20:55:34 xpc kernel: [26361.124874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jun 22 20:55:34 xpc kernel: [26361.124887] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jun 22 20:55:34 xpc kernel: [26361.124900] Stack:
Jun 22 20:55:34 xpc kernel: [26361.125844]  0000000000000000 0000000000000000 0000000000000003 ffff88019d63cb20
Jun 22 20:55:34 xpc kernel: [26361.126788]  ffff8801b60aba78 ffffffffc018836d ffff8801b8253250 0000000000000246
Jun 22 20:55:34 xpc kernel: [26361.127752]  ffff8801b60aba30 ffff880035c0740c ffff8801b60aba30 0000000000000003
Jun 22 20:55:34 xpc kernel: [26361.128699] Call Trace:
Jun 22 20:55:34 xpc kernel: [26361.129636]  [<ffffffffc018836d>] get_active_stripe+0x12d/0x7e0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.130576]  [<ffffffff810bc097>] ? prepare_to_wait+0x57/0x90
Jun 22 20:55:34 xpc kernel: [26361.131534]  [<ffffffffc018e00d>] make_request+0x19d/0xda0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.132479]  [<ffffffff8165e6cb>] ? __split_and_process_bio+0x2fb/0x3f0
Jun 22 20:55:34 xpc kernel: [26361.133410]  [<ffffffff810bc3b0>] ? wait_woken+0x90/0x90
Jun 22 20:55:34 xpc kernel: [26361.134332]  [<ffffffff8164bbfc>] md_make_request+0xdc/0x220
Jun 22 20:55:34 xpc kernel: [26361.135254]  [<ffffffff8165e83a>] ? dm_make_request+0x7a/0xd0
Jun 22 20:55:34 xpc kernel: [26361.136174]  [<ffffffff81386580>] generic_make_request+0xc0/0x110
Jun 22 20:55:34 xpc kernel: [26361.137073]  [<ffffffff81386648>] submit_bio+0x78/0x180
Jun 22 20:55:34 xpc kernel: [26361.137965]  [<ffffffff812df62b>] ? jbd2_journal_write_metadata_buffer+0x2cb/0x390
Jun 22 20:55:34 xpc kernel: [26361.138857]  [<ffffffff81233d3c>] _submit_bh+0x11c/0x190
Jun 22 20:55:34 xpc kernel: [26361.139748]  [<ffffffff81233dc0>] submit_bh+0x10/0x20
Jun 22 20:55:34 xpc kernel: [26361.140621]  [<ffffffff812d7481>] jbd2_journal_commit_transaction+0x7e1/0x1820
Jun 22 20:55:34 xpc kernel: [26361.141504]  [<ffffffff8101ddd9>] ? sched_clock+0x9/0x10
Jun 22 20:55:34 xpc kernel: [26361.142381]  [<ffffffff810e50ef>] ? try_to_del_timer_sync+0x4f/0x70
Jun 22 20:55:34 xpc kernel: [26361.143249]  [<ffffffff812dbe4b>] kjournald2+0xbb/0x250
Jun 22 20:55:34 xpc kernel: [26361.144110]  [<ffffffff810bc3b0>] ? wait_woken+0x90/0x90
Jun 22 20:55:34 xpc kernel: [26361.144957]  [<ffffffff812dbd90>] ? commit_timeout+0x10/0x10
Jun 22 20:55:34 xpc kernel: [26361.145799]  [<ffffffff81098c49>] kthread+0xc9/0xe0
Jun 22 20:55:34 xpc kernel: [26361.146634]  [<ffffffff81098b80>] ? kthread_create_on_node+0x180/0x180
Jun 22 20:55:34 xpc kernel: [26361.147470]  [<ffffffff817e2de2>] ret_from_fork+0x42/0x70
Jun 22 20:55:34 xpc kernel: [26361.148283]  [<ffffffff81098b80>] ? kthread_create_on_node+0x180/0x180
Jun 22 20:55:34 xpc kernel: [26361.149094] Code: 55 48 89 e5 41 55 41 54 53 49 89 fd 49 89 f4 89 d3 48 83 ec 08 f6 05 39 1b 01 00 04 75 5e 49 8b 45 00 4c 89 e2 81 e2 f8 0f 00 00 <48> 8b 04 02 48 85 c0 75 2d 31 db f6 05 f0 1a 01 00 04 75 57 48 
Jun 22 20:55:34 xpc kernel: [26361.149989] RIP  [<ffffffffc0181490>] __find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:34 xpc kernel: [26361.150833]  RSP <ffff8801b60ab988>
Jun 22 20:55:34 xpc kernel: [26361.156521] ---[ end trace c430f52499aa3b3a ]---
Jun 22 20:55:36 xpc kernel: [26363.223855] general protection fault: 0000 [#2] SMP 
Jun 22 20:55:36 xpc kernel: [26363.225306] Modules linked in: usblp binfmt_misc cfg80211 sp2 si2157 si2168 i2c_mux cx25840 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi joydev eeepc_wmi asus_wmi sparse_keymap mxm_wmi intel_rapl iosf_mbi x86_pkg_temp_thermal cx23885 intel_powerclamp kvm_intel altera_ci tda18271 altera_stapl kvm videobuf2_dvb tveeprom cx2341x snd_hda_intel dvb_core snd_hda_controller hid_logitech_hidpp rc_core i915 videobuf2_dma_sg crct10dif_pclmul snd_hda_codec videobuf2_memops crc32_pclmul videobuf2_core ghash_clmulni_intel snd_hda_core v4l2_common snd_hwdep aesni_intel videodev snd_seq_midi aes_x86_64 snd_seq_midi_event lrw media gf128mul snd_rawmidi snd_pcm glue_helper snd_seq ablk_helper drm_kms_helper cryptd snd_seq_device serio_raw snd_timer drm snd mei_me i2c_algo_bit soundcore mei lpc_ich shpchp mac_hid video wmi nfsd auth_rpcgss nfs_acl lockd grace sunrpc nct6775 hwmon_vid coretemp parport_pc ppdev lp parport autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 hid_logitech_dj raid0 e1000e usbhid ahci multipath ptp hid libahci psmouse pps_core linear
Jun 22 20:55:36 xpc kernel: [26363.233599] CPU: 5 PID: 22633 Comm: kworker/u16:1 Tainted: G      D         4.1.0-rc8 #2
Jun 22 20:55:36 xpc kernel: [26363.235288] Hardware name: ASUS All Series/MAXIMUS VI EXTREME, BIOS 1603 08/15/2014
Jun 22 20:55:36 xpc kernel: [26363.236982] Workqueue: writeback bdi_writeback_workfn (flush-252:1)
Jun 22 20:55:36 xpc kernel: [26363.238665] task: ffff880020984670 ti: ffff880071bfc000 task.ti: ffff880071bfc000
Jun 22 20:55:36 xpc kernel: [26363.240340] RIP: 0010:[<ffffffffc0181490>]  [<ffffffffc0181490>] __find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.242027] RSP: 0018:ffff880071bff578  EFLAGS: 00010002
Jun 22 20:55:36 xpc kernel: [26363.243693] RAX: 0001880035c19000 RBX: 0000000000000000 RCX: 0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.245370] RDX: 0000000000000368 RSI: 000000005047f368 RDI: ffff880035c07400
Jun 22 20:55:36 xpc kernel: [26363.247046] RBP: ffff880071bff598 R08: 0000000000000000 R09: 0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.248704] R10: 0000000000000368 R11: 0000000000000000 R12: 000000005047f368
Jun 22 20:55:36 xpc kernel: [26363.250343] R13: ffff880035c07400 R14: ffff880035c0741c R15: ffff880035c07400
Jun 22 20:55:36 xpc kernel: [26363.251937] FS:  0000000000000000(0000) GS:ffff8801bfb40000(0000) knlGS:0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.253493] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun 22 20:55:36 xpc kernel: [26363.254996] CR2: 00007f25ff0651a0 CR3: 0000000001c0d000 CR4: 00000000001407e0
Jun 22 20:55:36 xpc kernel: [26363.256456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jun 22 20:55:36 xpc kernel: [26363.257861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jun 22 20:55:36 xpc kernel: [26363.259226] Stack:
Jun 22 20:55:36 xpc kernel: [26363.260574]  ffff8801bfa94e40 0000000000000000 0000000000000005 ffff88011a296620
Jun 22 20:55:36 xpc kernel: [26363.261945]  ffff880071bff668 ffffffffc018836d 000000005047e3f8 ffff88011a296620
Jun 22 20:55:36 xpc kernel: [26363.263303]  00000000ffffffff ffff880035c07414 000000000000ffff 0000000000000005
Jun 22 20:55:36 xpc kernel: [26363.264653] Call Trace:
Jun 22 20:55:36 xpc kernel: [26363.265994]  [<ffffffffc018836d>] get_active_stripe+0x12d/0x7e0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.267351]  [<ffffffff81186600>] ? mempool_alloc+0x20/0x150
Jun 22 20:55:36 xpc kernel: [26363.268706]  [<ffffffff810bc097>] ? prepare_to_wait+0x57/0x90
Jun 22 20:55:36 xpc kernel: [26363.270064]  [<ffffffffc018e00d>] make_request+0x19d/0xda0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.271420]  [<ffffffff8165e6cb>] ? __split_and_process_bio+0x2fb/0x3f0
Jun 22 20:55:36 xpc kernel: [26363.272770]  [<ffffffff810bc3b0>] ? wait_woken+0x90/0x90
Jun 22 20:55:36 xpc kernel: [26363.274111]  [<ffffffff8164bbfc>] md_make_request+0xdc/0x220
Jun 22 20:55:36 xpc kernel: [26363.275446]  [<ffffffff8165e83a>] ? dm_make_request+0x7a/0xd0
Jun 22 20:55:36 xpc kernel: [26363.276784]  [<ffffffff81386580>] generic_make_request+0xc0/0x110
Jun 22 20:55:36 xpc kernel: [26363.278132]  [<ffffffff81386648>] submit_bio+0x78/0x180
Jun 22 20:55:36 xpc kernel: [26363.279469]  [<ffffffff8118ed32>] ? __test_set_page_writeback+0x132/0x1b0
Jun 22 20:55:36 xpc kernel: [26363.280805]  [<ffffffff8128dd19>] ext4_io_submit+0x29/0x60
Jun 22 20:55:36 xpc kernel: [26363.282131]  [<ffffffff8128dee8>] ext4_bio_write_page+0x168/0x410
Jun 22 20:55:36 xpc kernel: [26363.283460]  [<ffffffff811be580>] ? page_referenced_one+0x190/0x190
Jun 22 20:55:36 xpc kernel: [26363.284783]  [<ffffffff81284c71>] mpage_submit_page+0x61/0x90
Jun 22 20:55:36 xpc kernel: [26363.286097]  [<ffffffff81284db0>] mpage_process_page_bufs+0x110/0x120
Jun 22 20:55:36 xpc kernel: [26363.287409]  [<ffffffff81285f8d>] mpage_prepare_extent_to_map+0x1dd/0x2d0
Jun 22 20:55:36 xpc kernel: [26363.288722]  [<ffffffff8128a03c>] ext4_writepages+0x38c/0xca0
Jun 22 20:55:36 xpc kernel: [26363.290031]  [<ffffffff813b94e4>] ? cpumask_next_and+0x44/0x50
Jun 22 20:55:36 xpc kernel: [26363.291339]  [<ffffffff811910fe>] do_writepages+0x1e/0x30
Jun 22 20:55:36 xpc kernel: [26363.292646]  [<ffffffff8122a755>] __writeback_single_inode+0x45/0x2c0
Jun 22 20:55:36 xpc kernel: [26363.293958]  [<ffffffff8122ac2d>] writeback_sb_inodes+0x25d/0x450
Jun 22 20:55:36 xpc kernel: [26363.295268]  [<ffffffff8122aebf>] __writeback_inodes_wb+0x9f/0xd0
Jun 22 20:55:36 xpc kernel: [26363.296578]  [<ffffffff8122b113>] wb_writeback+0x223/0x2c0
Jun 22 20:55:36 xpc kernel: [26363.297883]  [<ffffffff81218541>] ? get_nr_inodes+0x51/0x80
Jun 22 20:55:36 xpc kernel: [26363.299181]  [<ffffffff8122b78c>] bdi_writeback_workfn+0x1cc/0x440
Jun 22 20:55:36 xpc kernel: [26363.300485]  [<ffffffff81092bf8>] process_one_work+0x158/0x440
Jun 22 20:55:36 xpc kernel: [26363.301785]  [<ffffffff8109375b>] worker_thread+0x5b/0x540
Jun 22 20:55:36 xpc kernel: [26363.303078]  [<ffffffff81093700>] ? rescuer_thread+0x3a0/0x3a0
Jun 22 20:55:36 xpc kernel: [26363.304369]  [<ffffffff81098c49>] kthread+0xc9/0xe0
Jun 22 20:55:36 xpc kernel: [26363.305655]  [<ffffffff81098b80>] ? kthread_create_on_node+0x180/0x180
Jun 22 20:55:36 xpc kernel: [26363.306950]  [<ffffffff817e2de2>] ret_from_fork+0x42/0x70
Jun 22 20:55:36 xpc kernel: [26363.308245]  [<ffffffff81098b80>] ? kthread_create_on_node+0x180/0x180
Jun 22 20:55:36 xpc kernel: [26363.309545] Code: 55 48 89 e5 41 55 41 54 53 49 89 fd 49 89 f4 89 d3 48 83 ec 08 f6 05 39 1b 01 00 04 75 5e 49 8b 45 00 4c 89 e2 81 e2 f8 0f 00 00 <48> 8b 04 02 48 85 c0 75 2d 31 db f6 05 f0 1a 01 00 04 75 57 48 
Jun 22 20:55:36 xpc kernel: [26363.310985] RIP  [<ffffffffc0181490>] __find_stripe+0x30/0xc0 [raid456]
Jun 22 20:55:36 xpc kernel: [26363.312362]  RSP <ffff880071bff578>
Jun 22 20:55:36 xpc kernel: [26363.313736] ---[ end trace c430f52499aa3b3b ]---
Jun 22 20:55:36 xpc kernel: [26363.313786] BUG: unable to handle kernel paging request at ffffffffffffffd8


The filesystems on LVM:

sudo tune2fs -l /dev//mapper/xpcvg-home 
tune2fs 1.42.12 (29-Aug-2014)
Filesystem volume name:   <none>
Last mounted on:          /home
Filesystem UUID:          db583624-afb4-41cb-8b2d-640bee2de61b
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery extent sparse_super large_file uninit_bg
Filesystem flags:         signed_directory_hash 
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              65536000
Block count:              262144000
Reserved block count:     13107200
Free blocks:              199344244
Free inodes:              65338714
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      961
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
RAID stride:              128
RAID stripe width:        384
Filesystem created:       Mon Jul 25 12:23:50 2011
Last mount time:          Mon Jun 22 21:07:06 2015
Last write time:          Mon Jun 22 21:07:06 2015
Mount count:              35
Maximum mount count:      157
Last checked:             Mon Jun 15 12:21:47 2015
Check interval:           15552000 (6 months)
Next check after:         Sat Dec 12 11:21:47 2015
Lifetime writes:          500 GB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
First orphan inode:       65143016
Default directory hash:   half_md4
Directory Hash Seed:      ea4a0233-d8af-4c51-9302-140a4affacdf
Journal backup:           inode blocks

sudo tune2fs -l /dev//mapper/xpcvg-data 
tune2fs 1.42.12 (29-Aug-2014)
Filesystem volume name:   <none>
Last mounted on:          /backup
Filesystem UUID:          1949c800-eb8c-4368-b809-3e2606c33d83
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery extent sparse_super large_file uninit_bg
Filesystem flags:         signed_directory_hash 
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              42008576
Block count:              168034304
Reserved block count:     8401715
Free blocks:              114693777
Free inodes:              42005415
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      983
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
RAID stride:              128
RAID stripe width:        384
Filesystem created:       Sun Jul 10 16:17:30 2011
Last mount time:          Mon Jun 22 21:04:50 2015
Last write time:          Mon Jun 22 21:04:50 2015
Mount count:              40
Maximum mount count:      157
Last checked:             Sat Jun  6 22:02:49 2015
Check interval:           15552000 (6 months)
Next check after:         Thu Dec  3 21:02:49 2015
Lifetime writes:          1889 GB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      a45f9ba2-ceb3-4a22-ab77-a2d5af71b82a
Journal backup:           inode blocks
sudo tune2fs -l /dev//mapper/xpcvg-video 
tune2fs 1.42.12 (29-Aug-2014)
Filesystem volume name:   <none>
Last mounted on:          /var/lib/video.00
Filesystem UUID:          0a8f2b37-4a27-4a06-b236-971af0cf1907
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery extent sparse_super large_file uninit_bg
Filesystem flags:         signed_directory_hash 
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              256114688
Block count:              1024458752
Reserved block count:     51222927
Free blocks:              463675406
Free inodes:              256097372
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      779
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
RAID stride:              128
RAID stripe width:        384
Filesystem created:       Mon Sep 21 21:47:18 2009
Last mount time:          Mon Jun 22 21:04:50 2015
Last write time:          Mon Jun 22 21:04:50 2015
Mount count:              137
Maximum mount count:      200
Last checked:             Thu Apr 16 06:08:46 2015
Check interval:           17280000 (6 months, 2 weeks, 6 days)
Next check after:         Mon Nov  2 05:08:46 2015
Lifetime writes:          15 TB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      ef0f022c-b41f-4a14-9957-e0f69e74987b
Journal backup:           inode blocks

Comment 1 Jouni Karvo 2015-06-22 19:53:52 UTC

It seems that it is always /dev/mapper/xpcvg-home that is corrupted after a crash.

I'll try to attach another crash log

Comment 2 Jouni Karvo 2015-06-22 19:55:02 UTC

Created attachment 180581 [details]
kernel log for another crash from today

Comment 3 Theodore Tso 2015-06-23 02:07:51 UTC

This crash is deep inside the md code.  So it looks like a software RAID bug.   I would suggest that you send this report to dm-devel@redhat.com, since I don't believe the devicemapper / md developers use the kernel bugzilla.

Comment 4 Jouni Karvo 2016-02-18 15:37:40 UTC

4.2 is not affected.  the bug was in raid456 and Neil Brown fixed it last summer; probably some 4.1 version is already ok.

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