Oops on boot with 2.5.40 bk

[Patrick Mau]

Hallo everyone,

I got the following oops while md auto-detection during boot.
Kernel is 2.5.40-bk, because kernel.org is down for me.

There once was a raid-array configured, but I cleared all
partitions using dd ...

Here's the oops, thanks for listening:

Adding 144576k swap on /dev/sda1.  Priority:0 extents:1
Adding 144576k swap on /dev/sdb1.  Priority:0 extents:1
Adding 144576k swap on /dev/sdc1.  Priority:0 extents:1
Adding 144576k swap on /dev/sdd1.  Priority:0 extents:1
EXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,2), internal journal
 [events: 00000000]
md: invalid raid superblock magic on sda4
md: sda4 has invalid sb, not importing!
md: could not import sda4!
general protection fault: 0000
 
CPU:    0
EIP:    0060:[<c02628fb>]    Not tainted
EFLAGS: 00010246
EIP is at export_rdev+0x7/0x84
eax: 0000001e   ebx: ffffffea   ecx: c036ae88   edx: 00000000
esi: 00000804   edi: ffffffea   ebp: 00000804   esp: df9bdee8
ds: 0068   es: 0068   ss: 0068
Process raidstart (pid: 64, threadinfo=df9bc000 task=dfcf7500)
Stack: ffffffea c0264510 ffffffea 00000804 00000804 00000804 00000000 c0264e39 
       00000804 00000931 dfc7d580 00000804 df99c400 00000802 00000000 dfc7fe00 
       00000804 000061b0 00000001 00000000 00000006 00000804 00000000 00000000 
Call Trace:
 [<c0264510>]autostart_array+0x12c/0x138
 [<c0264e39>]md_ioctl+0xed/0x588
 [<c013cb26>]blkdev_ioctl+0xba/0xf4
 [<c0143bc7>]sys_ioctl+0x21b/0x234
 [<c0108743>]syscall_call+0x7/0xb

Code: 8b 43 14 85 c0 74 04 0f b7 50 10 52 e8 48 59 ef ff 83 c4 04