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Old 11-14-2010, 07:06 PM
Andreas Florath
 
Default Bug#603508: kernel crashes during raid6 resync

Package: linux-2.6
Version: 2.6.32-27
File: /boot/vmlinuz-2.6.32-5-amd64
Severity: normal

*** Please type your report below this line ***
After installation of four new disks and configuring RAID 6 using
those four disks, the kernel keeps crashing every some minutes.
When using programs which exercise the disk (like bonnie++) it only
takes seconds to get an Oops.

The RAID 6 is syncing:
# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md127 : active raid6 sda1[0] sdd1[3] sdc1[2] sdb1[1]
976768640 blocks super 1.2 level 6, 64k chunk, algorithm 2 [4/4] [UUUU]
[>....................] resync = 1.0% (5155568/488384320) finish=171.1min speed=47044K/sec

unused devices: <none>

Attached there are two different Oops kernel stack traces.

IMHO the kernel should not crash. Even if the 'attempt to access
beyond end of device' is true, the disk should be mapped out of the
RAID and the others should continue working.

I'm not sure if this matters, but all four disks are WD disks which
report physical sector size of 4096 byte.

If you have any further questions, please drop me a mail.

Kind regards

Andreas Florath



Nov 14 18:50:10 peleus kernel: [ 989.048138] JBD2: Detected IO errors while flushing file data on dm-0-8
Nov 14 18:50:14 peleus kernel: [ 992.624892] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
Nov 14 18:50:14 peleus kernel: [ 992.625081] IP: [<ffffffff810b5799>] mempool_free+0x14/0x7e
Nov 14 18:50:14 peleus kernel: [ 992.625238] PGD 7a5be067 PUD 77886067 PMD 0
Nov 14 18:50:14 peleus kernel: [ 992.625458] Oops: 0000 [#1] SMP
Nov 14 18:50:14 peleus kernel: [ 992.625613] last sysfs file: /sys/devices/virtual/block/dm-0/dm/name
Nov 14 18:50:14 peleus kernel: [ 992.625684] CPU 1
Nov 14 18:50:14 peleus kernel: [ 992.625788] Modules linked in: ext4 jbd2 crc16 dm_mod loop snd_pcm snd_timer i2c_i801 i2c_core snd soundcore snd_page_alloc pcspkr evdev joydev button processor ext3 jbd mbcache raid10 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 raid0 multipath linear md_mod sd_mod crc_t10dif usbhid hid usb_storage ahci libata uhci_hcd thermal scsi_mod e1000e ehci_hcd thermal_sys usbcore nls_base [last unloaded: scsi_wait_scan]
Nov 14 18:50:14 peleus kernel: [ 992.628146] Pid: 335, comm: md127_raid6 Tainted: G B 2.6.32-5-amd64 #1 X7SPA-HF
Nov 14 18:50:14 peleus kernel: [ 992.628233] RIP: 0010:[<ffffffff810b5799>] [<ffffffff810b5799>] mempool_free+0x14/0x7e
Nov 14 18:50:14 peleus kernel: [ 992.628364] RSP: 0018:ffff88013b703c90 EFLAGS: 00010286
Nov 14 18:50:14 peleus kernel: [ 992.628432] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
Nov 14 18:50:14 peleus kernel: [ 992.628503] RDX: 00000000ffffff00 RSI: 0000000000000000 RDI: ffff88000fd2c2b8
Nov 14 18:50:14 peleus kernel: [ 992.628515] RBP: ffff88000fd2c2b8 R08: 0000000000000000 R09: ffff88013be07a00
Nov 14 18:50:14 peleus kernel: [ 992.628515] R10: 0000000000000000 R11: ffffffffa01da608 R12: ffff88000fd2c2b8
Nov 14 18:50:14 peleus kernel: [ 992.628515] R13: ffff88013bd29400 R14: ffff88000fd2d1b8 R15: 0000000000020001
Nov 14 18:50:14 peleus kernel: [ 992.628515] FS: 0000000000000000(0000) GS:ffff880005280000(0000) knlGS:0000000000000000
Nov 14 18:50:14 peleus kernel: [ 992.628515] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Nov 14 18:50:14 peleus kernel: [ 992.628515] CR2: 0000000000000008 CR3: 000000008b42f000 CR4: 00000000000006e0
Nov 14 18:50:14 peleus kernel: [ 992.628515] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Nov 14 18:50:14 peleus kernel: [ 992.628515] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Nov 14 18:50:14 peleus kernel: [ 992.628515] Process md127_raid6 (pid: 335, threadinfo ffff88013b702000, task ffff88013c44dbd0)
Nov 14 18:50:14 peleus kernel: [ 992.628515] Stack:
Nov 14 18:50:14 peleus kernel: [ 992.628515] 0000000000000000 0000000000000000 ffff880138187000 ffffffffa01da692
Nov 14 18:50:14 peleus kernel: [ 992.628515] <0> ffff88000fcc16c0 ffff88013bfa1420 ffff88013be07a00 0000000000000004
Nov 14 18:50:14 peleus kernel: [ 992.628515] <0> 0000000000000000 ffffffffa018fc65 0000000300015780 ffff88013be07b50
Nov 14 18:50:14 peleus kernel: [ 992.628515] Call Trace:
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffffa01da692>] ? clone_endio+0x8a/0xad [dm_mod]
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffffa018fc65>] ? handle_stripe+0xc83/0x1785 [raid456]
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffffa018bf7c>] ? __release_stripe+0x165/0x199 [raid456]
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffffa0190b0c>] ? raid5d+0x3a5/0x3ee [raid456]
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffff812fa4b4>] ? schedule_timeout+0x2e/0xdd
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffffa011683f>] ? md_thread+0xf1/0x10f [md_mod]
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffff81064c0e>] ? autoremove_wake_function+0x0/0x2e
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffffa011674e>] ? md_thread+0x0/0x10f [md_mod]
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffff81064941>] ? kthread+0x79/0x81
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffff81011baa>] ? child_rip+0xa/0x20
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffff810648c8>] ? kthread+0x0/0x81
Nov 14 18:50:14 peleus kernel: [ 992.628515] [<ffffffff81011ba0>] ? child_rip+0x0/0x20
Nov 14 18:50:14 peleus kernel: [ 992.628515] Code: fe 48 89 c7 e9 07 23 03 00 48 89 f0 48 89 fe 48 89 c7 e9 22 13 03 00 55 48 89 fd 53 48 89 f3 48 83 ec 08 48 85 ff 74 69 0f ae f0 <8b> 46 08 3b 46 04 7d 4d 48 89 f7 e8 e6 5b 24 00 8b 4b 08 3b 4b
Nov 14 18:50:14 peleus kernel: [ 992.628515] RIP [<ffffffff810b5799>] mempool_free+0x14/0x7e
Nov 14 18:50:14 peleus kernel: [ 992.628515] RSP <ffff88013b703c90>
Nov 14 18:50:14 peleus kernel: [ 992.628515] CR2: 0000000000000008
Nov 14 18:50:14 peleus kernel: [ 992.634279] ---[ end trace 22dd08456e4f7a1e ]---
Nov 14 18:50:18 peleus kernel: [ 997.329557] attempt to access beyond end of device
Nov 14 18:50:18 peleus kernel: [ 997.329637] dm-0: rw=1, want=134048280, limit=25165824
Nov 14 18:50:18 peleus kernel: [ 997.329557] attempt to access beyond end of device
Nov 14 18:50:18 peleus kernel: [ 997.329637] dm-0: rw=1, want=134048280, limit=25165824
Nov 14 18:50:18 peleus kernel: [ 997.329707] Buffer I/O error on device dm-0, logical block 16756034
Nov 14 18:50:18 peleus kernel: [ 997.329776] lost page write due to I/O error on dm-0
Nov 14 18:50:29 peleus kernel: [ 1007.826427] python[7729] general protection ip:4a3532 sp:7fff617107b0 error:0 in python2.6[400000+21d000]

----------------------------------------------------------------------

Nov 14 20:12:57 peleus kernel: [ 303.327998] attempt to access beyond end of device
Nov 14 20:12:57 peleus kernel: [ 303.328010] dm-0: rw=1, want=134056464, limit=25165824
Nov 14 20:12:57 peleus kernel: [ 303.328017] Buffer I/O error on device dm-0, logical block 16757057
Nov 14 20:12:57 peleus kernel: [ 303.328112] lost page write due to I/O error on dm-0
Nov 14 20:13:04 peleus kernel: [ 309.925864] ------------[ cut here ]------------
Nov 14 20:13:04 peleus kernel: [ 309.925945] kernel BUG at /build/mattems-linux-2.6_2.6.32-27-amd64-IsDpkI/linux-2.6-2.6.32/debian/build/source_amd64_none/fs/buffer.c:378!
Nov 14 20:13:04 peleus kernel: [ 309.926050] invalid opcode: 0000 [#1] SMP
Nov 14 20:13:04 peleus kernel: [ 309.926209] last sysfs file: /sys/devices/virtual/block/dm-0/dm/name
Nov 14 20:13:04 peleus kernel: [ 309.926283] CPU 0
Nov 14 20:13:04 peleus kernel: [ 309.926390] Modules linked in: ext4 jbd2 crc16 loop raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod snd_pcm snd_timer joydev snd soundcore snd_page_alloc evdev i2c_i801 i2c_core button pcspkr processor ext3 jbd mbcache dm_mod btrfs zlib_deflate crc32c libcrc32c sd_mod crc_t10dif usbhid hid usb_storage ahci uhci_hcd libata thermal scsi_mod ehci_hcd e1000e usbcore nls_base thermal_sys [last unloaded: scsi_wait_scan]
Nov 14 20:13:04 peleus kernel: [ 309.928016] Pid: 744, comm: md127_raid6 Not tainted 2.6.32-5-amd64 #1 X7SPA-HF
Nov 14 20:13:04 peleus kernel: [ 309.928016] RIP: 0010:[<ffffffff8110de7d>] [<ffffffff8110de7d>] end_buffer_async_write+0x25/0x13b
Nov 14 20:13:04 peleus kernel: [ 309.928016] RSP: 0018:ffff88013ce4fc70 EFLAGS: 00010246
Nov 14 20:13:04 peleus kernel: [ 309.928016] RAX: 0000000000000029 RBX: ffff88003f361850 RCX: 000000000066000f
Nov 14 20:13:04 peleus kernel: [ 309.928016] RDX: ffff88003f361850 RSI: 0000000000000001 RDI: ffff88003f361850
Nov 14 20:13:04 peleus kernel: [ 309.928016] RBP: ffff88013d9f71f0 R08: 0000000000000000 R09: ffff88013ca58840
Nov 14 20:13:04 peleus kernel: [ 309.928016] R10: 00000001000009b1 R11: ffffffff8110cb7d R12: ffff88013dca9a00
Nov 14 20:13:04 peleus kernel: [ 309.928016] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000020001
Nov 14 20:13:04 peleus kernel: [ 309.928016] FS: 0000000000000000(0000) GS:ffff880005200000(0000) knlGS:0000000000000000
Nov 14 20:13:04 peleus kernel: [ 309.928016] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Nov 14 20:13:04 peleus kernel: [ 309.928016] CR2: 0000000000670ce8 CR3: 000000013c94b000 CR4: 00000000000006f0
Nov 14 20:13:04 peleus kernel: [ 309.928016] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Nov 14 20:13:04 peleus kernel: [ 309.928016] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Nov 14 20:13:04 peleus kernel: [ 309.928016] Process md127_raid6 (pid: 744, threadinfo ffff88013ce4e000, task ffff88013c2ab880)
Nov 14 20:13:04 peleus kernel: [ 309.928016] Stack:
Nov 14 20:13:04 peleus kernel: [ 309.928016] ffff8800378fef00 0000000000000000 0000000000020001 0000000000000202
Nov 14 20:13:04 peleus kernel: [ 309.928016] <0> ffff88010007e000 00000000a4fb2890 0000000000000000 ffff8800378fef00
Nov 14 20:13:04 peleus kernel: [ 309.928016] <0> ffff88013d9f71f0 ffff88013dca9a00 0000000000000004 ffffffff8110cbb8
Nov 14 20:13:04 peleus kernel: [ 309.928016] Call Trace:
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff8110cbb8>] ? end_bio_bh_io_sync+0x3b/0x44
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffffa02e8c65>] ? handle_stripe+0xc83/0x1785 [raid456]
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffffa02e9b0c>] ? raid5d+0x3a5/0x3ee [raid456]
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff812fa4b4>] ? schedule_timeout+0x2e/0xdd
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffffa028e83f>] ? md_thread+0xf1/0x10f [md_mod]
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff81064c0e>] ? autoremove_wake_function+0x0/0x2e
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffffa028e74e>] ? md_thread+0x0/0x10f [md_mod]
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff81064941>] ? kthread+0x79/0x81
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff81011baa>] ? child_rip+0xa/0x20
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff810648c8>] ? kthread+0x0/0x81
Nov 14 20:13:04 peleus kernel: [ 309.928016] [<ffffffff81011ba0>] ? child_rip+0x0/0x20
Nov 14 20:13:04 peleus kernel: [ 309.928016] Code: 5d 41 5c 41 5d c3 41 55 41 54 55 53 48 89 fb 48 83 ec 38 65 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 48 8b 07 f6 c4 01 75 04 <0f> 0b eb fe 85 f6 4c 8b 6f 10 74 06 f0 80 0f 01 eb 53 66 85 c0
Nov 14 20:13:04 peleus kernel: [ 309.928016] RIP [<ffffffff8110de7d>] end_buffer_async_write+0x25/0x13b
Nov 14 20:13:04 peleus kernel: [ 309.928016] RSP <ffff88013ce4fc70>
Nov 14 20:13:04 peleus kernel: [ 309.935013] ---[ end trace a497b17d8cdd6238 ]---



-- Package-specific info:
** Version:
Linux version 2.6.32-5-amd64 (Debian 2.6.32-27) (maks@debian.org) (gcc version 4.3.5 (Debian 4.3.5-4) ) #1 SMP Sat Oct 30 14:18:21 UTC 2010

** Command line:
BOOT_IMAGE=/boot/vmlinuz-2.6.32-5-amd64 root=UUID=1519accb-178b-49bd-8227-470b7de2cd87 ro quiet

** Not tainted

** Kernel log:
[ 5.788216] sda:
[ 5.788419] sd 4:0:0:0: [sdc] 976773168 512-byte logical blocks: (500 GB/465 GiB)
[ 5.788428] sd 4:0:0:0: [sdc] 4096-byte physical blocks
[ 5.788500] sdb:
[ 5.788667] sd 4:0:0:0: [sdc] Write Protect is off
[ 5.788674] sd 5:0:0:0: [sdd] 976773168 512-byte logical blocks: (500 GB/465 GiB)
[ 5.788681] sd 5:0:0:0: [sdd] 4096-byte physical blocks
[ 5.788689] sd 4:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[ 5.788772] sd 4:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.788886] sd 5:0:0:0: [sdd] Write Protect is off
[ 5.788895] sd 5:0:0:0: [sdd] Mode Sense: 00 3a 00 00
[ 5.788982] sd 5:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.789370] sdc:
[ 5.789566] sdd: sda1
[ 5.869198] sd 2:0:0:0: [sda] Attached SCSI disk
[ 5.870159] sdd1
[ 5.870987] sd 5:0:0:0: [sdd] Attached SCSI disk
[ 5.871601] sdb1
[ 5.872454] sd 3:0:0:0: [sdb] Attached SCSI disk
[ 5.873100] sdc1
[ 5.873906] sd 4:0:0:0: [sdc] Attached SCSI disk
[ 6.089068] Btrfs loaded
[ 6.115892] device-mapper: uevent: version 1.0.3
[ 6.116618] device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised: dm-devel@redhat.com
[ 6.785265] usb-storage: device scan complete
[ 6.785850] scsi 6:0:0:0: Direct-Access WD 10EAVS External 1.75 PQ: 0 ANSI: 4
[ 6.787373] sd 6:0:0:0: [sde] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
[ 6.787998] sd 6:0:0:0: [sde] Write Protect is off
[ 6.788011] sd 6:0:0:0: [sde] Mode Sense: 23 00 00 00
[ 6.788018] sd 6:0:0:0: [sde] Assuming drive cache: write through
[ 6.789460] sd 6:0:0:0: [sde] Assuming drive cache: write through
[ 6.789533] sde: sde1
[ 6.813717] sd 6:0:0:0: [sde] Assuming drive cache: write through
[ 6.813789] sd 6:0:0:0: [sde] Attached SCSI disk
[ 7.428556] EXT3-fs: INFO: recovery required on readonly filesystem.
[ 7.428563] EXT3-fs: write access will be enabled during recovery.
[ 7.493597] kjournald starting. Commit interval 5 seconds
[ 7.493632] EXT3-fs: recovery complete.
[ 7.494634] EXT3-fs: mounted filesystem with ordered data mode.
[ 8.586152] udev[428]: starting version 163
[ 8.859746] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input4
[ 8.859766] ACPI: Power Button [PWRB]
[ 8.860352] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input5
[ 8.860372] ACPI: Power Button [PWRF]
[ 8.861298] processor LNXCPU:00: registered as cooling_device0
[ 8.862952] processor LNXCPU:01: registered as cooling_device1
[ 8.863864] processor LNXCPU:02: registered as cooling_device2
[ 8.864945] processor LNXCPU:03: registered as cooling_device3
[ 8.991642] input: PC Speaker as /devices/platform/pcspkr/input/input6
[ 9.491701] i801_smbus 0000:00:1f.3: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[ 9.547012] Error: Driver 'pcspkr' is already registered, aborting...
[ 9.901163] md: md127 stopped.
[ 9.912889] md: bind<sdb1>
[ 9.913170] md: bind<sdc1>
[ 9.913412] md: bind<sdd1>
[ 9.913647] md: bind<sda1>
[ 9.948113] async_tx: api initialized (async)
[ 9.951361] xor: automatically using best checksumming function: generic_sse
[ 9.969008] generic_sse: 5770.000 MB/sec
[ 9.969015] xor: using function: generic_sse (5770.000 MB/sec)
[ 10.057096] raid6: int64x1 324 MB/s
[ 10.125027] raid6: int64x2 508 MB/s
[ 10.193020] raid6: int64x4 594 MB/s
[ 10.261086] raid6: int64x8 713 MB/s
[ 10.329173] raid6: sse2x1 273 MB/s
[ 10.397236] raid6: sse2x2 216 MB/s
[ 10.465078] raid6: sse2x4 448 MB/s
[ 10.465083] raid6: using algorithm sse2x4 (448 MB/s)
[ 10.482430] md: raid6 personality registered for level 6
[ 10.482438] md: raid5 personality registered for level 5
[ 10.482443] md: raid4 personality registered for level 4
[ 10.482912] raid5: md127 is not clean -- starting background reconstruction
[ 10.482942] raid5: device sda1 operational as raid disk 0
[ 10.482948] raid5: device sdd1 operational as raid disk 3
[ 10.482953] raid5: device sdc1 operational as raid disk 2
[ 10.482958] raid5: device sdb1 operational as raid disk 1
[ 10.484218] raid5: allocated 4282kB for md127
[ 10.484316] 0: w=1 pa=0 pr=4 m=2 a=2 r=4 op1=0 op2=0
[ 10.484323] 3: w=2 pa=0 pr=4 m=2 a=2 r=4 op1=0 op2=0
[ 10.484329] 2: w=3 pa=0 pr=4 m=2 a=2 r=4 op1=0 op2=0
[ 10.484335] 1: w=4 pa=0 pr=4 m=2 a=2 r=4 op1=0 op2=0
[ 10.484340] raid5: raid level 6 set md127 active with 4 out of 4 devices, algorithm 2
[ 10.484345] RAID5 conf printout:
[ 10.484348] --- rd:4 wd:4
[ 10.484354] disk 0, o:1, dev:sda1
[ 10.484359] disk 1, o:1, dev:sdb1
[ 10.484363] disk 2, o:1, dev:sdc1
[ 10.484368] disk 3, o:1, dev:sdd1
[ 10.484444] md127: detected capacity change from 0 to 1000211087360
[ 10.484597] md: resync of RAID array md127
[ 10.484605] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
[ 10.484612] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for resync.
[ 10.484628] md: using 128k window, over a total of 488384320 blocks.
[ 10.494670] md127: unknown partition table
[ 11.167033] EXT3 FS on sde1, internal journal
[ 11.294016] loop: module loaded
[ 13.035457] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 16.081442] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
[ 16.082826] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 26.684735] eth0: no IPv6 routers present

** Model information
sys_vendor: Supermicro
product_name: X7SPA-HF
product_version: 1234567890
chassis_vendor: Supermicro
chassis_version: 1234567890
bios_vendor: American Megatrends Inc.
bios_version: 1.0c
board_vendor: Supermicro
board_name: X7SPA-HF
board_version: 1234567890

** Loaded modules:
Module Size Used by
loop 11799 0
raid456 44500 1
async_raid6_recov 5170 1 raid456
async_pq 3479 2 raid456,async_raid6_recov
raid6_pq 77179 2 async_raid6_recov,async_pq
async_xor 2478 3 raid456,async_raid6_recov,async_pq
xor 4380 1 async_xor
async_memcpy 1198 2 raid456,async_raid6_recov
async_tx 1734 5 raid456,async_raid6_recov,async_pq,async_xor,async _memcpy
md_mod 73808 2 raid456
snd_pcm 60503 0
i2c_i801 7830 0
snd_timer 15582 1 snd_pcm
joydev 8459 0
i2c_core 15712 1 i2c_i801
evdev 7352 4
snd 46446 2 snd_pcm,snd_timer
soundcore 4598 1 snd
snd_page_alloc 6249 1 snd_pcm
pcspkr 1699 0
button 4650 0
processor 29951 0
ext3 106534 1
jbd 37101 1 ext3
mbcache 5050 1 ext3
dm_mod 53786 2
btrfs 375670 0
zlib_deflate 17746 1 btrfs
crc32c 2560 1
libcrc32c 1074 1 btrfs
sd_mod 29777 10
crc_t10dif 1276 1 sd_mod
usbhid 33292 0
hid 62857 1 usbhid
usb_storage 39577 1
ahci 32374 4
libata 133616 1 ahci
thermal 11674 0
scsi_mod 122117 3 sd_mod,usb_storage,libata
uhci_hcd 18521 0
ehci_hcd 31135 0
e1000e 110047 0
usbcore 121954 5 usbhid,usb_storage,uhci_hcd,ehci_hcd
nls_base 6377 1 usbcore
thermal_sys 11942 2 processor,thermal

** Network interface configuration:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

** Network status:
*** IP interfaces and addresses:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:25:90:0a:eb:b6 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.147/24 brd 10.0.0.255 scope global eth0
inet6 fe80::225:90ff:fe0a:ebb6/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:25:90:0a:eb:b7 brd ff:ff:ff:ff:ff:ff

*** Device statistics:
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
lo: 983888 2571 0 0 0 0 0 0 983888 2571 0 0 0 0 0 0
eth0:60723631 43929 0 0 0 0 0 23 2681822 24707 0 0 0 0 0 0
eth1: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

*** Protocol statistics:
Ip:
43385 total packets received
1 with invalid addresses
0 forwarded
0 incoming packets discarded
43379 incoming packets delivered
24256 requests sent out
16 dropped because of missing route
Icmp:
0 ICMP messages received
0 input ICMP message failed.
ICMP input histogram:
0 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
Tcp:
11 active connections openings
8 passive connection openings
0 failed connection attempts
0 connection resets received
3 connections established
45906 segments received
26782 segments send out
1 segments retransmited
0 bad segments received.
8 resets sent
Udp:
36 packets received
0 packets to unknown port received.
0 packet receive errors
36 packets sent
UdpLite:
TcpExt:
5 TCP sockets finished time wait in fast timer
42 delayed acks sent
Quick ack mode was activated 2 times
9 packets directly queued to recvmsg prequeue.
41119 packet headers predicted
246 acknowledgments not containing data payload received
4457 predicted acknowledgments
1 congestion windows recovered without slow start after partial ack
1 other TCP timeouts
2 DSACKs sent for old packets
1 DSACKs received
TCPDSACKIgnoredNoUndo: 1
IpExt:
InOctets: 60082677
OutOctets: 2312672

*** Device features:
eth0: 0x110ba9
eth1: 0x110ba9
lo: 0x13865

** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation N10 Family DMI Bridge [8086:a000] (rev 02)
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>

00:1a.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 [8086:2937] (rev 02) (prog-if 00 [UHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 4: I/O ports at cc00 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd

00:1a.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 [8086:2938] (rev 02) (prog-if 00 [UHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 21
Region 4: I/O ports at c880 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd

00:1a.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 [8086:2939] (rev 02) (prog-if 00 [UHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 19
Region 4: I/O ports at c800 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd

00:1a.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 [8086:293c] (rev 02) (prog-if 20 [EHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin C routed to IRQ 18
Region 0: Memory at febfbc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: c0000000-c01fffff
Prefetchable memory behind bridge: 00000000c0200000-00000000c03fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.4 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 [8086:2948] (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fe900000-fe9fffff
Prefetchable memory behind bridge: 00000000c0400000-00000000c05fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.5 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 [8086:294a] (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: fea00000-feafffff
Prefetchable memory behind bridge: 00000000c0600000-00000000c07fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1d.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 02) (prog-if 00 [UHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 23
Region 4: I/O ports at c480 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd

00:1d.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 02) (prog-if 00 [UHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 19
Region 4: I/O ports at c400 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd

00:1d.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 02) (prog-if 00 [UHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin C routed to IRQ 18
Region 4: I/O ports at c080 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd

00:1d.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 02) (prog-if 20 [EHCI])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 23
Region 0: Memory at febfb800 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev 92) (prog-if 01 [Subtractive decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=32
Memory behind bridge: fdf00000-fe7fffff
Prefetchable memory behind bridge: 00000000fc000000-00000000fcffffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>

00:1f.0 ISA bridge [0601]: Intel Corporation 82801IR (ICH9R) LPC Interface Controller [8086:2916] (rev 02)
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>

00:1f.2 SATA controller [0106]: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA AHCI Controller [8086:2922] (rev 02) (prog-if 01 [AHCI 1.0])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 30
Region 0: I/O ports at b480 [size=8]
Region 1: I/O ports at c000 [size=4]
Region 2: I/O ports at bc00 [size=8]
Region 3: I/O ports at b880 [size=4]
Region 4: I/O ports at b800 [size=32]
Region 5: Memory at febfb000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci

00:1f.3 SMBus [0c05]: Intel Corporation 82801I (ICH9 Family) SMBus Controller [8086:2930] (rev 02)
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin C routed to IRQ 18
Region 0: Memory at febfac00 (64-bit, non-prefetchable) [size=256]
Region 4: I/O ports at 0400 [size=32]
Kernel driver in use: i801_smbus

02:00.0 Ethernet controller [0200]: Intel Corporation 82574L Gigabit Network Connection [8086:10d3]
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at fe9e0000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at dc00 [size=32]
Region 3: Memory at fe9dc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: e1000e

03:00.0 Ethernet controller [0200]: Intel Corporation 82574L Gigabit Network Connection [8086:10d3]
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 17
Region 0: Memory at feae0000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at ec00 [size=32]
Region 3: Memory at feadc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: e1000e

04:04.0 VGA compatible controller [0300]: Matrox Graphics, Inc. MGA G200eW WPCM450 [102b:0532] (rev 0a) (prog-if 00 [VGA controller])
Subsystem: Super Micro Computer Inc Device [15d9:060a]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (4000ns min, 8000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 15
Region 0: Memory at fc000000 (32-bit, prefetchable) [size=16M]
Region 1: Memory at fdffc000 (32-bit, non-prefetchable) [size=16K]
Region 2: Memory at fe000000 (32-bit, non-prefetchable) [size=8M]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>


** USB devices:
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 002: ID 0557:2221 ATEN International Co., Ltd
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 1058:1003 Western Digital Technologies, Inc.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-2.6.32-5-amd64 depends on:
ii debconf [debconf-2.0] 1.5.36 Debian configuration management sy
ii initramfs-tools [linux-initra 0.98.5 tools for generating an initramfs
ii linux-base 2.6.32-27 Linux image base package
ii module-init-tools 3.12-1 tools for managing Linux kernel mo

Versions of packages linux-image-2.6.32-5-amd64 recommends:
pn firmware-linux-free <none> (no description available)

Versions of packages linux-image-2.6.32-5-amd64 suggests:
pn grub | lilo <none> (no description available)
pn linux-doc-2.6.32 <none> (no description available)

Versions of packages linux-image-2.6.32-5-amd64 is related to:
pn firmware-bnx2 <none> (no description available)
pn firmware-bnx2x <none> (no description available)
pn firmware-ipw2x00 <none> (no description available)
pn firmware-ivtv <none> (no description available)
pn firmware-iwlwifi <none> (no description available)
pn firmware-linux <none> (no description available)
pn firmware-linux-nonfree <none> (no description available)
pn firmware-qlogic <none> (no description available)
pn firmware-ralink <none> (no description available)
pn xen-hypervisor <none> (no description available)

-- debconf information:
linux-image-2.6.32-5-amd64/postinst/ignoring-do-bootloader-2.6.32-5-amd64:
linux-image-2.6.32-5-amd64/postinst/depmod-error-initrd-2.6.32-5-amd64: false
linux-image-2.6.32-5-amd64/prerm/removing-running-kernel-2.6.32-5-amd64: true
linux-image-2.6.32-5-amd64/postinst/missing-firmware-2.6.32-5-amd64:



--
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Archive: 4CE04141.8050907@flonatel.org">http://lists.debian.org/4CE04141.8050907@flonatel.org
 
Old 11-15-2010, 12:06 AM
Ben Hutchings
 
Default Bug#603508: kernel crashes during raid6 resync

On Sun, 2010-11-14 at 21:06 +0100, Andreas Florath wrote:
> Package: linux-2.6
> Version: 2.6.32-27
> File: /boot/vmlinuz-2.6.32-5-amd64
> Severity: normal
>
> *** Please type your report below this line ***
> After installation of four new disks and configuring RAID 6 using
> those four disks, the kernel keeps crashing every some minutes.
> When using programs which exercise the disk (like bonnie++) it only
> takes seconds to get an Oops.
[...]
> Nov 14 18:50:10 peleus kernel: [ 989.048138] JBD2: Detected IO errors while flushing file data on dm-0-8
> Nov 14 18:50:14 peleus kernel: [ 992.624892] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
> Nov 14 18:50:14 peleus kernel: [ 992.625081] IP: [<ffffffff810b5799>] mempool_free+0x14/0x7e
> Nov 14 18:50:14 peleus kernel: [ 992.625238] PGD 7a5be067 PUD 77886067 PMD 0
> Nov 14 18:50:14 peleus kernel: [ 992.625458] Oops: 0000 [#1] SMP
> Nov 14 18:50:14 peleus kernel: [ 992.625613] last sysfs file: /sys/devices/virtual/block/dm-0/dm/name
> Nov 14 18:50:14 peleus kernel: [ 992.625684] CPU 1
> Nov 14 18:50:14 peleus kernel: [ 992.625788] Modules linked in: ext4 jbd2 crc16 dm_mod loop snd_pcm snd_timer i2c_i801 i2c_core snd soundcore snd_page_alloc pcspkr evdev joydev button processor ext3 jbd mbcache raid10 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 raid0 multipath linear md_mod sd_mod crc_t10dif usbhid hid usb_storage ahci libata uhci_hcd thermal scsi_mod e1000e ehci_hcd thermal_sys usbcore nls_base [last unloaded: scsi_wait_scan]
> Nov 14 18:50:14 peleus kernel: [ 992.628146] Pid: 335, comm: md127_raid6 Tainted: G B 2.6.32-5-amd64 #1 X7SPA-HF
[...]

The 'B' taint flag above indicates that the kernel already ran into a
serious error. We need to see the earlier error message beginning with
'BUG: Bad page ...'

Also, please consider testing the system RAM using memtest86+.

Ben.

--
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.
 

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