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SubjectRe: 2.6.12-rc4, -mm: bad ide-cs problems
Pavel Machek wrote:
> On St 25-05-05 13:27:45, Pavel Machek wrote:
>
>>Hi!
>>
>>I see some problems in pcmcia subsystem in 2.6.12-rc4:
>>
>>On compaq nx5000, inserting CF ide card is recognized as anonymous
>>memory. On compaq evo, it is recognized okay and
>>mounts/works. Unfortunately when I unplug the card, I get an oops:
>>
>>Message from syslogd@Elf at Wed May 25 13:25:25 2005 ...
>>Elf kernel: Unable to handle kernel NULL pointer dereference at
>>virtual address 00000010
>>
>>Message from syslogd@Elf at Wed May 25 13:25:25 2005 ...
>>Elf kernel: printing eip:
>>
>>Message from syslogd@Elf at Wed May 25 13:25:25 2005 ...
>>Elf kernel: *pde = 00000000
>>
>>Message from syslogd@Elf at Wed May 25 13:25:25 2005 ...
>>Elf kernel: Oops: 0000 [#1]
>>
>>. -mm kernel actually works better on nx5000; it behaves similary to
>>-rc4 on evo; unfortunately it produces similar oops on card unplug.
>
>
> This is full oops from -rc4 on compaq evo:
>
> hde: cache flushes not supported
> hde: hde1
> ide-cs: hde: Vcc = 3.3, Vpp = 0.0
> hde: hde1
> hde: hde1
> Unable to handle kernel NULL pointer dereference at virtual address
> 00000010
> printing eip:
> c033d618
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> Modules linked in:
> CPU: 0
> EIP: 0060:[<c033d618>] Not tainted VLI
> EFLAGS: 00010292 (2.6.12-rc4)
> EIP is at ide_drive_remove+0x8/0x10
> eax: c07825f8 ebx: c0782704 ecx: c07826f0 edx: 00000000
> esi: c07826e0 edi: c065fed8 ebp: 00000001 esp: dfce5e84
> ds: 007b es: 007b ss: 0068
> Process pccardd (pid: 932, threadinfo=dfce4000 task=dfc84a40)
> Stack: c02dc4b4 c07826e0 c065fa00 c0782568 c02dc724 c07826e0 c0782a80
> c02db5e2
> c07826e0 df373a80 c02db628 c07825f8 c033bcfb c0782568 00000002
> df373b80
> df373b80 c0670680 c0670728 c034f63b df758200 00000000 c034f67a
> c0386108
> Call Trace:
> [<c02dc4b4>] device_release_driver+0x74/0x80

Pavel,
I had a similar problem which I fixed amd posted to lkml a while ago
though I seems to got ignored by the ide maintainer. Please see if this
helps in your case:

http://marc.theaimsgroup.com/?l=linux-kernel&m=111409743421578&w=2
--
Andreas Steinmetz SPAMmers use robotrap@domdv.de
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