Kernel 2.6.19.2 New RAID 5 Bug (oops when writing Samba -> RAID5)

From: Justin Piszcz <jpiszcz@lucidpixels.com>
To: linux-kernel@vger.kernel.org
Cc: linux-raid@vger.kernel.org, xfs@oss.sgi.com, Neil Brown <neilb@suse.de>
Subject: Kernel 2.6.19.2 New RAID 5 Bug (oops when writing Samba -> RAID5)
Date: Sat, 20 Jan 2007 07:23:39 -0500 (EST)	[thread overview]
Message-ID: <Pine.LNX.4.64.0701200718290.29223@p34.internal.lan> (raw)

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My .config is attached, please let me know if any other information is 
needed and please CC (lkml) as I am not on the list, thanks!

Running Kernel 2.6.19.2 on a MD RAID5 volume.  Copying files over Samba to 
the RAID5 running XFS.

Any idea what happened here?

[473795.214705] BUG: unable to handle kernel paging request at virtual 
address fffb92b0
[473795.214715]  printing eip:
[473795.214718] c0358b14
[473795.214721] *pde = 00003067
[473795.214723] *pte = 00000000
[473795.214726] Oops: 0000 [#1]
[473795.214729] PREEMPT SMP 
[473795.214736] CPU:    0
[473795.214737] EIP:    0060:[<c0358b14>]    Not tainted VLI
[473795.214738] EFLAGS: 00010286   (2.6.19.2 #1)
[473795.214746] EIP is at copy_data+0x6c/0x179
[473795.214750] eax: 00000000   ebx: 00001000   ecx: 00000354   edx: fffb9000
[473795.214754] esi: fffb92b0   edi: da86c2b0   ebp: 00001000   esp: f7927dc4
[473795.214757] ds: 007b   es: 007b   ss: 0068
[473795.214761] Process md4_raid5 (pid: 1305, ti=f7926000 task=f7ea9030 task.ti=f7926000)
[473795.214765] Stack: c1ba7c40 00000003 f5538c80 00000001 da86c000 00000009 00000000 0000006c 
[473795.214790]        00001000 da8536a8 aa6fee90 f5538c80 00000190 c0358d00 aa6fee88 0000ffff 
[473795.214863]        d7c5794c 00000001 da853488 f6fbec70 f6fbebc0 00000001 00000005 00000001 
[473795.214876] Call Trace:
[473795.214880]  [<c0358d00>] compute_parity5+0xdf/0x497
[473795.214887]  [<c035b0dd>] handle_stripe+0x930/0x2986
[473795.214892]  [<c01146b9>] find_busiest_group+0x124/0x4fd
[473795.214898]  [<c03580e0>] release_stripe+0x21/0x2e
[473795.214902]  [<c035d233>] raid5d+0x100/0x161
[473795.214907]  [<c036b03c>] md_thread+0x40/0x103
[473795.214912]  [<c012dbbe>] autoremove_wake_function+0x0/0x4b
[473795.214917]  [<c036affc>] md_thread+0x0/0x103
[473795.214922]  [<c012da1a>] kthread+0xfc/0x100
[473795.214926]  [<c012d91e>] kthread+0x0/0x100
[473795.214930]  [<c0103b4b>] kernel_thread_helper+0x7/0x1c
[473795.214935]  =======================
[473795.214938] Code: 14 39 d1 0f 8d 10 01 00 00 89 c8 01 c0 01 c8 01 c0 
01 c0 89 44 24 1c eb 51 89 d9 c1 e9 02 8b 7c 24 10 01 f7 8b 44 24 18 8d 34 
02 <f3> a5 89 d9 83 e1 03 74 02 f3 a4 c7 44 24 04 03 00 00 00 89 14 
[473795.215017] EIP: [<c0358b14>] copy_data+0x6c/0x179 SS:ESP 
0068:f7927dc4
[473795.215024]  <6>note: md4_raid5[1305] exited with preempt_count 2

# mdadm -D /dev/md4
/dev/md4:
        Version : 01.00.03
  Creation Time : Wed Jan 10 15:58:52 2007
     Raid Level : raid5
     Array Size : 1562834432 (1490.44 GiB 1600.34 GB)
    Device Size : 781417216 (372.61 GiB 400.09 GB)
   Raid Devices : 5
  Total Devices : 5
Preferred Minor : 4
    Persistence : Superblock is persistent

    Update Time : Sat Jan 20 07:15:01 2007
          State : active
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 128K

           Name : 4
           UUID : 7f453e18:893e4dd9:6e810372:4c724f49
         Events : 33

    Number   Major   Minor   RaidDevice State
       0       8       33        0      active sync   /dev/sdc1
       1       8       81        1      active sync   /dev/sdf1
       2       8      113        2      active sync   /dev/sdh1
       3       8       65        3      active sync   /dev/sde1
       5       8       49        4      active sync   /dev/sdd1

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