Bug 42614 - NULL pointer dereference in handle_stripe after disk failure
NULL pointer dereference in handle_stripe after disk failure
Status: NEW
Product: IO/Storage
Classification: Unclassified
Component: MD
All Linux
: P1 normal
Assigned To: io_md
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2012-01-20 02:12 UTC by Kevin Shanahan
Modified: 2015-08-07 08:30 UTC (History)
2 users (show)

See Also:
Kernel Version: 3.1.9-2-ARCH
Tree: Mainline
Regression: No


Attachments

Description Kevin Shanahan 2012-01-20 02:12:07 UTC
My storage controller was having some issues with one slot in my array eventually caused the disk to drop out of the array (RAID6 over 4 devices). Possibly related to bug 15464?

Jan 19 18:36:53 localhost kernel: [79134.277836] sdd: detected capacity change from 3000592982016 to 0
Jan 19 18:36:53 localhost kernel: [79134.278246] md/raid:md6: Disk failure on sdd1, disabling device.
Jan 19 18:36:53 localhost kernel: [79134.278247] md/raid:md6: Operation continuing on 3 devices.
Jan 19 18:36:53 localhost kernel: [79134.351843] RAID conf printout:
Jan 19 18:36:53 localhost kernel: [79134.351846]  --- level:6 rd:4 wd:3
Jan 19 18:36:53 localhost kernel: [79134.351848]  disk 0, o:1, dev:sdf1
Jan 19 18:36:53 localhost kernel: [79134.351851]  disk 1, o:1, dev:sde1
Jan 19 18:36:53 localhost kernel: [79134.351853]  disk 2, o:0, dev:sdd1
Jan 19 18:36:53 localhost kernel: [79134.351855]  disk 3, o:1, dev:sdc1
Jan 19 18:36:53 localhost kernel: [79134.388760] RAID conf printout:
Jan 19 18:36:53 localhost kernel: [79134.388762]  --- level:6 rd:4 wd:3
Jan 19 18:36:53 localhost kernel: [79134.388765]  disk 0, o:1, dev:sdf1
Jan 19 18:36:53 localhost kernel: [79134.388767]  disk 1, o:1, dev:sde1
Jan 19 18:36:53 localhost kernel: [79134.388769]  disk 3, o:1, dev:sdc1
Jan 19 18:36:53 localhost kernel: [79134.388792] BUG: unable to handle kernel NULL pointer dereference at 00000000000000b0
Jan 19 18:36:53 localhost kernel: [79134.392087] IP: [<ffffffffa0152bbb>] handle_stripe+0x24b/0x1df0 [raid456]
Jan 19 18:36:53 localhost kernel: [79134.392087] PGD 22cfc6067 PUD 230e5e067 PMD 0 
Jan 19 18:36:53 localhost kernel: [79134.392087] Oops: 0000 [#1] PREEMPT SMP 
Jan 19 18:36:53 localhost kernel: [79134.392087] CPU 1 
Jan 19 18:36:54 localhost kernel: [79134.392087] Modules linked in: ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge ipv6 stp llc tun ext2 i915 drm_kms_helper drm ppdev snd_hda_codec_via parport_pc i2c_i801 i2c_algo_bit intel_agp snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer parport pcspkr serio_raw snd i2c_core intel_gtt atl1c soundcore video snd_page_alloc processor button evdev iTCO_wdt iTCO_vendor_support kvm_intel kvm ext4 mbcache jbd2 crc16 dm_mod raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 md_mod sd_mod mvsas usbhid libsas pata_acpi hid uhci_hcd ehci_hcd sata_sil ata_piix scsi_transport_sas sata_sil24 usbcore libata scsi_mod
Jan 19 18:36:54 localhost kernel: [79134.435442] 
Jan 19 18:36:54 localhost kernel: [79134.435442] Pid: 227, comm: md6_raid6 Not tainted 3.1.9-2-ARCH #1 Gigabyte Technology Co., Ltd. G41MT-S2P/G41MT-S2P
Jan 19 18:36:54 localhost kernel: [79134.435442] RIP: 0010:[<ffffffffa0152bbb>]  [<ffffffffa0152bbb>] handle_stripe+0x24b/0x1df0 [raid456]
Jan 19 18:36:54 localhost kernel: [79134.435442] RSP: 0018:ffff88022f61bc80  EFLAGS: 00010002
Jan 19 18:36:54 localhost kernel: [79134.435442] RAX: 0000000000008301 RBX: ffff88022f59a7a8 RCX: ffff880230850a60
Jan 19 18:36:54 localhost kernel: [79134.435442] RDX: 0000000000000001 RSI: 000000010e6d3c08 RDI: ffff8802301f0ba8
Jan 19 18:36:54 localhost kernel: [79134.435442] RBP: ffff88022f61bd70 R08: 0000000000000000 R09: ffff8802301f0ba8
Jan 19 18:36:54 localhost kernel: [79134.435442] R10: 0000000000000001 R11: ffff880237001a80 R12: 0000000000000000
Jan 19 18:36:54 localhost kernel: [79134.435442] R13: ffff88022f59a5e0 R14: 0000000000000002 R15: ffff8802301f0a00
Jan 19 18:36:54 localhost kernel: [79134.435442] FS:  0000000000000000(0000) GS:ffff88023fc80000(0000) knlGS:0000000000000000
Jan 19 18:36:54 localhost kernel: [79134.435442] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Jan 19 18:36:54 localhost kernel: [79134.435442] CR2: 00000000000000b0 CR3: 000000022ce6c000 CR4: 00000000000006e0
Jan 19 18:36:54 localhost kernel: [79134.435442] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 19 18:36:54 localhost kernel: [79134.435442] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Jan 19 18:36:54 localhost kernel: [79134.435442] Process md6_raid6 (pid: 227, threadinfo ffff88022f61a000, task ffff880230f2b250)
Jan 19 18:36:54 localhost kernel: [79134.435442] Stack:
Jan 19 18:36:54 localhost kernel: [79134.435442]  0000000000000282 ffff8802301f0ba8 ffff88022f59a620 ffff8802301f0a00
Jan 19 18:36:54 localhost kernel: [79134.435442]  ffff88022f61bce0 ffffffff8104c123 ffff880200000004 ffff88022f61bcc8
Jan 19 18:36:54 localhost kernel: [79134.435442]  0000000000000000 0000000000000000 0000000000000000 0000000000000002
Jan 19 18:36:54 localhost kernel: [79134.435442] Call Trace:
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffff8104c123>] ? __wake_up+0x53/0x70
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffffa0154b8b>] raid5d+0x42b/0x610 [raid456]
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffffa0120d5e>] md_thread+0x10e/0x140 [md_mod]
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffff810851b0>] ? abort_exclusive_wait+0xb0/0xb0
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffffa0120c50>] ? md_register_thread+0x110/0x110 [md_mod]
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffff8108486c>] kthread+0x8c/0xa0
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffff8140e534>] kernel_thread_helper+0x4/0x10
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffff810847e0>] ? kthread_worker_fn+0x190/0x190
Jan 19 18:36:54 localhost kernel: [79134.435442]  [<ffffffff8140e530>] ? gs_change+0x13/0x13
Jan 19 18:36:54 localhost kernel: [79134.435442] Code: 00 00 f6 c4 02 75 10 f0 80 8b a8 00 00 00 08 f0 80 8b a9 00 00 00 01 48 8b 83 a8 00 00 00 f6 c4 80 74 28 f0 80 a3 a8 00 00 00 f7 
Jan 19 18:36:54 localhost [79134.435442]  8b 84 24 b0 00 00 00 a8 02 0f 85 75 03 00 00 c7 45 b8 01 00 
Jan 19 18:36:54 localhost kernel: [79134.435442] RIP  [<ffffffffa0152bbb>] handle_stripe+0x24b/0x1df0 [raid456]
Jan 19 18:36:54 localhost kernel: [79134.435442]  RSP <ffff88022f61bc80>
Jan 19 18:36:54 localhost kernel: [79134.435442] CR2: 00000000000000b0
Jan 19 18:36:54 localhost kernel: [79134.435442] ---[ end trace 0185819b90009018 ]---
Jan 19 18:36:54 localhost kernel: [79134.435442] note: md6_raid6[227] exited with preempt_count 1
Comment 1 xerofoify 2014-06-26 04:45:57 UTC
Please test against a newer kernel to see if this is fixed.
Cheers Nick
Comment 2 Kevin Shanahan 2014-06-26 05:01:36 UTC
This was not readily reproducable and still isn't.

If the backtrace is not useful in pointing out a bug, then there is nothing else to do and the bug can be closed.
Comment 3 xerofoify 2014-06-26 05:04:29 UTC
The back trace is not good enough for me to trace it. I would recommend closing it
them.
Thanks Nick
Comment 4 Cornelius Riemenschneider 2015-08-07 08:30:45 UTC
This definitly still happens - current backtrace:

Aug 06 23:33:45 james kernel: md/raid:md0: Disk failure on sde1, disabling device.
                              md/raid:md0: Operation continuing on 4 devices.
Aug 06 23:33:46 james kernel: md: md0: recovery interrupted.
Aug 06 23:33:47 james kernel: RAID conf printout:
Aug 06 23:33:47 james kernel:  --- level:6 rd:6 wd:4
Aug 06 23:33:47 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:33:47 james kernel:  disk 1, o:0, dev:sde1
Aug 06 23:33:47 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:33:47 james kernel:  disk 3, o:1, dev:sdj1
Aug 06 23:33:47 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:33:47 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:33:47 james kernel: RAID conf printout:
Aug 06 23:33:47 james kernel:  --- level:6 rd:6 wd:4
Aug 06 23:33:47 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:33:47 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:33:47 james kernel:  disk 3, o:1, dev:sdj1
Aug 06 23:33:47 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:33:47 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:33:47 james kernel: RAID conf printout:
Aug 06 23:33:47 james kernel:  --- level:6 rd:6 wd:4
Aug 06 23:33:47 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:33:47 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:33:47 james kernel:  disk 3, o:1, dev:sdj1
Aug 06 23:33:47 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:33:47 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:33:47 james kernel: RAID conf printout:
Aug 06 23:33:47 james kernel:  --- level:6 rd:6 wd:4
Aug 06 23:33:47 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:33:47 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:33:47 james kernel:  disk 3, o:1, dev:sdj1
Aug 06 23:33:47 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:33:47 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:33:47 james kernel: md: recovery of RAID array md0
Aug 06 23:33:47 james kernel: md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
Aug 06 23:33:47 james kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
Aug 06 23:33:47 james kernel: md: using 128k window, over a total of 1953278720k.
Aug 06 23:33:47 james kernel: md: resuming recovery of md0 from checkpoint.
Aug 06 23:34:05 james kernel: ata8.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Aug 06 23:34:05 james kernel: ata8.00: irq_stat 0x00060002, device error via D2H FIS
Aug 06 23:34:05 james kernel: ata8.00: failed command: READ DMA EXT
Aug 06 23:34:05 james kernel: ata8.00: cmd 25/00:e8:c0:60:7d/00:07:d0:00:00/e0 tag 0 dma 1036288 in
                                       res 51/40:97:10:63:7d/00:05:d0:00:00/e0 Emask 0x9 (media error)
Aug 06 23:34:05 james kernel: ata8.00: status: { DRDY ERR }
Aug 06 23:34:05 james kernel: ata8.00: error: { UNC }
Aug 06 23:34:05 james kernel: ata8.00: configured for UDMA/33
Aug 06 23:34:05 james kernel: scsi_io_completion: 40 callbacks suppressed
Aug 06 23:34:05 james kernel: sd 9:0:0:0: [sdj] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 06 23:34:05 james kernel: sd 9:0:0:0: [sdj] tag#0 Sense Key : Medium Error [current] [descriptor] 
Aug 06 23:34:05 james kernel: sd 9:0:0:0: [sdj] tag#0 Add. Sense: Unrecovered read error - auto reallocate failed
Aug 06 23:34:05 james kernel: sd 9:0:0:0: [sdj] tag#0 CDB: Read(10) 28 00 d0 7d 60 c0 00 07 e8 00
Aug 06 23:34:05 james kernel: blk_update_request: 42 callbacks suppressed
Aug 06 23:34:05 james kernel: blk_update_request: I/O error, dev sdj, sector 3497878288
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876240 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876248 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876256 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876264 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876272 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876280 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876288 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876296 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876304 on sdj1).
Aug 06 23:34:05 james kernel: md/raid:md0: read error not correctable (sector 3497876312 on sdj1).
Aug 06 23:34:05 james kernel: ata8: EH complete
Aug 06 23:34:10 james kernel: ata8.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Aug 06 23:34:10 james kernel: ata8.00: irq_stat 0x00060002, device error via D2H FIS
Aug 06 23:34:10 james kernel: ata8.00: failed command: READ DMA EXT
Aug 06 23:34:10 james kernel: ata8.00: cmd 25/00:e8:78:78:7d/00:07:d0:00:00/e0 tag 1 dma 1036288 in
                                       res 51/40:d7:88:79:7d/00:06:d0:00:00/e0 Emask 0x9 (media error)
Aug 06 23:34:10 james kernel: ata8.00: status: { DRDY ERR }
Aug 06 23:34:10 james kernel: ata8.00: error: { UNC }
Aug 06 23:34:10 james kernel: ata8.00: configured for UDMA/33
Aug 06 23:34:10 james kernel: sd 9:0:0:0: [sdj] tag#1 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 06 23:34:10 james kernel: sd 9:0:0:0: [sdj] tag#1 Sense Key : Medium Error [current] [descriptor] 
Aug 06 23:34:10 james kernel: sd 9:0:0:0: [sdj] tag#1 Add. Sense: Unrecovered read error - auto reallocate failed
Aug 06 23:34:10 james kernel: sd 9:0:0:0: [sdj] tag#1 CDB: Read(10) 28 00 d0 7d 78 78 00 07 e8 00
Aug 06 23:34:10 james kernel: blk_update_request: I/O error, dev sdj, sector 3497884040
Aug 06 23:34:10 james kernel: ata8: EH complete
Aug 06 23:34:28 james kernel: ata8.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Aug 06 23:34:28 james kernel: ata8.00: irq_stat 0x00060002, device error via D2H FIS
Aug 06 23:34:28 james kernel: ata8.00: failed command: READ DMA EXT
Aug 06 23:34:28 james kernel: ata8.00: cmd 25/00:d8:88:79:7d/00:06:d0:00:00/e0 tag 0 dma 897024 in
                                       res 51/40:a7:b0:7e:7d/00:01:d0:00:00/e0 Emask 0x9 (media error)
Aug 06 23:34:28 james kernel: ata8.00: status: { DRDY ERR }
Aug 06 23:34:28 james kernel: ata8.00: error: { UNC }
Aug 06 23:34:28 james kernel: ata8.00: configured for UDMA/33
Aug 06 23:34:28 james kernel: sd 9:0:0:0: [sdj] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 06 23:34:28 james kernel: sd 9:0:0:0: [sdj] tag#0 Sense Key : Medium Error [current] [descriptor] 
Aug 06 23:34:28 james kernel: sd 9:0:0:0: [sdj] tag#0 Add. Sense: Unrecovered read error - auto reallocate failed
Aug 06 23:34:28 james kernel: sd 9:0:0:0: [sdj] tag#0 CDB: Read(10) 28 00 d0 7d 79 88 00 06 d8 00
Aug 06 23:34:28 james kernel: blk_update_request: I/O error, dev sdj, sector 3497885360
Aug 06 23:34:28 james kernel: raid5_end_read_request: 388 callbacks suppressed
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883312 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: Disk failure on sdj1, disabling device.
                              md/raid:md0: Operation continuing on 3 devices.
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883320 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883328 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883336 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883344 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883352 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883360 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883368 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883376 on sdj1).
Aug 06 23:34:28 james kernel: md/raid:md0: read error not correctable (sector 3497883384 on sdj1).
Aug 06 23:34:28 james kernel: ata8: EH complete
Aug 06 23:34:30 james kernel: md: md0: recovery interrupted.
Aug 06 23:34:30 james kernel: RAID conf printout:
Aug 06 23:34:30 james kernel:  --- level:6 rd:6 wd:3
Aug 06 23:34:30 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:34:30 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:34:30 james kernel:  disk 3, o:0, dev:sdj1
Aug 06 23:34:30 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:34:30 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:34:30 james kernel: RAID conf printout:
Aug 06 23:34:30 james kernel:  --- level:6 rd:6 wd:3
Aug 06 23:34:30 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:34:30 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:34:30 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:34:30 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:34:30 james kernel: RAID conf printout:
Aug 06 23:34:30 james kernel:  --- level:6 rd:6 wd:3
Aug 06 23:34:30 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:34:30 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:34:30 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:34:30 james kernel:  disk 5, o:1, dev:sdk1
Aug 06 23:34:30 james kernel: RAID conf printout:
Aug 06 23:34:30 james kernel:  --- level:6 rd:6 wd:3
Aug 06 23:34:30 james kernel:  disk 0, o:1, dev:sdd1
Aug 06 23:34:30 james kernel:  disk 2, o:1, dev:sdc1
Aug 06 23:34:30 james kernel:  disk 4, o:1, dev:sdb1
Aug 06 23:34:31 james kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000150
Aug 06 23:34:31 james kernel: IP: [<ffffffffa0590d36>] handle_stripe+0x1596/0x2660 [raid456]
Aug 06 23:34:31 james kernel: PGD 0 
Aug 06 23:34:31 james kernel: Oops: 0000 [#1] SMP 
Aug 06 23:34:31 james kernel: Modules linked in: vhost_net vhost macvtap macvlan ebtable_filter ebtables ip6table_filter ip6_tables xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype br_netfilter nf_nat nf_conntrack dm_thin_pool dm_persistent_data dm_bio_prison libcrc32c loop tun bridge stp llc cfg80211 rfkill vfat fat intel_rapl iosf_mbi x86_pkg_temp_thermal raid456 coretemp kvm_intel async_raid6_recov async_memcpy async_pq async_xor kvm xor async_tx iTCO_wdt iTCO_vendor_support snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic raid6_pq snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm i2c_i801 lpc_ich snd_timer mfd_core nuvoton_cir snd rc_core mei_me mei soundcore tpm_tis shpchp tpm
Aug 06 23:34:31 james kernel:  nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper uas e1000e drm ghash_clmulni_intel usb_storage serio_raw r8169 mii ptp mvsas pps_core sata_sil24 libsas scsi_transport_sas video
Aug 06 23:34:31 james kernel: CPU: 1 PID: 759 Comm: md0_raid6 Not tainted 4.1.3-200.fc22.x86_64 #1
Aug 06 23:34:31 james kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Z68 Pro3, BIOS P2.10 05/07/2012
Aug 06 23:34:31 james kernel: task: ffff8807fa274520 ti: ffff8800d16a0000 task.ti: ffff8800d16a0000
Aug 06 23:34:31 james kernel: RIP: 0010:[<ffffffffa0590d36>]  [<ffffffffa0590d36>] handle_stripe+0x1596/0x2660 [raid456]
Aug 06 23:34:31 james kernel: RSP: 0018:ffff8800d16a3b48  EFLAGS: 00010202
Aug 06 23:34:31 james kernel: RAX: 0000000000000003 RBX: 0000000000000005 RCX: 0000000000000005
Aug 06 23:34:31 james kernel: RDX: 0000000000000002 RSI: 0000000000000003 RDI: 0000000000000000
Aug 06 23:34:31 james kernel: RBP: ffff8800d16a3c78 R08: 0000000000000000 R09: 0000000000000000
Aug 06 23:34:31 james kernel: R10: 0000000000000005 R11: 0000000000000004 R12: 0000000000000005
Aug 06 23:34:31 james kernel: R13: ffff880653790948 R14: 0000000000000005 R15: ffff8807f9be9000
Aug 06 23:34:31 james kernel: FS:  0000000000000000(0000) GS:ffff88081f280000(0000) knlGS:0000000000000000
Aug 06 23:34:31 james kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 06 23:34:31 james kernel: CR2: 0000000000000150 CR3: 0000000002c0b000 CR4: 00000000000427e0
Aug 06 23:34:31 james kernel: Stack:
Aug 06 23:34:31 james kernel:  0000000000000001 0000000000000000 0000000000000000 00000000c8882968
Aug 06 23:34:31 james kernel:  ffff8807f9be9230 000000010199d4f8 0000000000000001 ffff8806537909b0
Aug 06 23:34:31 james kernel:  0000000000000000 ffff880653790b48 ffff880000000001 00000001ffffffff
Aug 06 23:34:31 james kernel: Call Trace:
Aug 06 23:34:31 james kernel:  [<ffffffffa0591f9e>] handle_active_stripes.isra.45+0x19e/0x4e0 [raid456]
Aug 06 23:34:31 james kernel:  [<ffffffffa0592798>] raid5d+0x4b8/0x680 [raid456]
Aug 06 23:34:31 james kernel:  [<ffffffff8179d581>] ? __schedule+0x241/0x720
Aug 06 23:34:31 james kernel:  [<ffffffff815fd2c4>] md_thread+0x144/0x150
Aug 06 23:34:31 james kernel:  [<ffffffff810e4d10>] ? wake_atomic_t_function+0x70/0x70
Aug 06 23:34:31 james kernel:  [<ffffffff815fd180>] ? find_pers+0x80/0x80
Aug 06 23:34:31 james kernel:  [<ffffffff810c0b88>] kthread+0xd8/0xf0
Aug 06 23:34:31 james kernel:  [<ffffffff810c0ab0>] ? kthread_worker_fn+0x180/0x180
Aug 06 23:34:31 james kernel:  [<ffffffff817a1e62>] ret_from_fork+0x42/0x70
Aug 06 23:34:31 james kernel:  [<ffffffff810c0ab0>] ? kthread_worker_fn+0x180/0x180
Aug 06 23:34:31 james kernel: Code: 69 d2 70 01 00 00 4c 01 ea 48 8b 92 10 02 00 00 80 e2 10 0f 85 c4 10 00 00 31 d2 85 c0 0f 8e f2 f7 ff ff 48 8b bc d5 48 ff ff ff <48> 83 bf 50 01 00 00 00 74 1d 4c 8b 87 68 01 00 00 41 83 e0 01 
Aug 06 23:34:31 james kernel: RIP  [<ffffffffa0590d36>] handle_stripe+0x1596/0x2660 [raid456]
Aug 06 23:34:31 james kernel:  RSP <ffff8800d16a3b48>
Aug 06 23:34:31 james kernel: CR2: 0000000000000150
Aug 06 23:34:31 james kernel: [drm:intel_crtc_set_config [i915]] *ERROR* failed to restore config after modeset failure
Aug 06 23:34:31 james kernel: ---[ end trace 5971c15150d886db ]---

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