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SubjectUnable to handle kernel NULL pointer dereference at virtual address 00000000 (Was: Re: 2.5.1-pre2 compile error in ide-scsi.o ide-scsi.c)
Date
On Thursdayen den 29 November 2001 17.54, Jens Axboe wrote:
> On Thu, Nov 29 2001, Sebastian Dröge wrote:
> > Sorry my mistake
> > I've meant this patch:
> > http://kernel.org/pub/linux/kernel/people/axboe/patches/v2.5/2.5.1-pre3/b
> >io-pre3-1.gz
> >
> > So it's 2.5.1-pre3 + Alan's patch + bio-pre3-1 + the patch you've posted
> > after the 2.5.1-pre3 don't-use mail
> >
> > There were no failures while patching so I think this patches are
> > compatible each other ;)
>
> Yes sure, that's what I expected. THe part I didn't understand was the
> sr-sg-1 part.
>
> > And it works well... no data corruption, no oopses, no nothing ;)
> > Later the day I'll test burning a CD
>
> Good

Hmm...

I got the BUG described earlier in this thread with a 2.4.16 kernel (sligtly
patched but in a different area - update the page structure referenced bit
when scheduling away a process - it has been running for several days)

The driver in question is a "Pioneer DVD-ROM ATAPIModel DVD-115 0122"
And i tried to mount a Windows CD - Joliet?

It looks like this:

Dec 13 22:07:00 jeloin kernel: VFS: Disk change detected on device ide1(22,64)
Dec 13 22:07:03 jeloin kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Dec 13 22:07:03 jeloin kernel: printing eip:
Dec 13 22:07:03 jeloin kernel: d0894866
Dec 13 22:07:03 jeloin kernel: *pde = 00000000
Dec 13 22:07:03 jeloin kernel: Oops: 0002
Dec 13 22:07:03 jeloin kernel: CPU: 0
Dec 13 22:07:03 jeloin kernel: EIP: 0010:[<d0894866>] Not tainted
Dec 13 22:07:03 jeloin kernel: EFLAGS: 00210202
Dec 13 22:07:03 jeloin kernel: eax: cf8b4600 ebx: 00000001 ecx: c6fa3000
edx: cbceb040
Dec 13 22:07:03 jeloin kernel: esi: c6fa3000 edi: 00000000 ebp: c7ad0f60
esp: c8403e88
Dec 13 22:07:03 jeloin kernel: ds: 0018 es: 0018 ss: 0018
Dec 13 22:07:03 jeloin kernel: Process kdeinit (pid: 1195, stackpage=c8403000)
Dec 13 22:07:03 jeloin kernel: Stack: 00000001 c6fa3000 c6fa3021 c7ad0f60
00001640 00000000 00000000 00000000
Dec 13 22:07:03 jeloin kernel: 00000000 00000000 00000000 00000800
cbceb040 d089227e c6fa3000 00000000
Dec 13 22:07:03 jeloin kernel: cbceb040 c12bc640 cbceb040 cbceb040
c7702360 00000030 00000030 00000000
Dec 13 22:07:03 jeloin kernel: Call Trace: [<d089227e>] [<d08923c4>]
[real_lookup+83/196] [link_path_walk+1302/1880] [getname+93/156]
Dec 13 22:07:03 jeloin kernel: [path_walk+26/28] [__user_walk+53/80]
[sys_access+148/300] [system_call+51/56]
Dec 13 22:07:03 jeloin kernel:
Dec 13 22:07:03 jeloin kernel: Code: c6 07 00 0f b6 51 20 8d 42 21 89 44 24
30 83 e0 01 83 c2 22
Dec 13 22:09:19 jeloin modprobe: modprobe: Can't locate module net-pf-10
I have ide-scsi but that is only used on my CDRW
"Vendor: HP Model: CD-Writer+ 9300 Rev: 1.0c"

Ideas?

/RogerL

--
Roger Larsson
Skellefteå
Sweden
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