Kernel oops in with RAID5

From: Andrew Robinson
Date: Tue Feb 20 2007 - 12:30:39 EST

I can't seem to find sufficient information on what may have caused an
oops. I am running a debian machine using kernel Here is
detailed information on the system:

debian etch
CPU: AMD athlon 2100+
kernel package: linux-image-2.6.18-3-686
raid5 array: 3 active, 1 spare on md0
raid fs: ext3
raid is physically across 2 on-board NVidia SATA ports and 2 ports
from a SATA controller card

I am at work, and this was a home computer. This is what I got from
syslog when in SSH before it died:

bserver kernel: iret exception: 0000 [#1]
bserver kernel: SMP
bserver kernel: CPU: 0
bserver kernel: EIP is at copy_data+0xff/0x14b [raid456]
bserver kernel: eax: ddcce000 ebx: 00001000 ecx: 0000000f edx: c1f71000
bserver kernel: esi: ddccefc4 edi: c1f71fc4 ebp: 00000000 esp: dd261e4c
bserver kernel: ds: 007b es: 007b ss: 0068
bserver kernel: Process md0_raid5 (pid: 1115, ti=dd260000
task=dd0ed550 task.ti=dd260000)
bserver kernel: Stack: c1f71000 ddb55460 c1e377a0 00000000 ddcce000
00001000 c1f71000 00000000
bserver kernel: 00000000 00000000 00000000 dd20c388 c1e377a0
dd20c354 de95d96d 0c649510
bserver kernel: 00000000 c0116d0a 06323c4f 00000000 dd20c384
00000000 c13c52e0 0000e000
bserver kernel: Call Trace:
bserver kernel: Code: 8d 04 2f 01 4c 24 18 83 7c 24 0c 00 8b 54 24 18
8d 34 32 89 34 24 74 09 89 d9 89 c7 c1 e9 02 eb 0a 8b 3c 24 89 d9 89
c6 c1 e9 02 <f3> a5 89 d9 83 e1 03 74 02 f3 a4 8b 44 24 18 ba 03 00 00
00 e8
bserver kernel: EIP: [<de95b0cb>] copy_data+0xff/0x14b [raid456]
SS:ESP 0068:dd261e4c

The only similar message chain that I could find was about 2.6.19 and
they recommended disabling preempting, but debian's already
has that disabled by default.

Any ideas?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at