Panic with mounting CD in 2.6.0test8

Panic with mounting CD in 2.6.0test8

[Ian]

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I'm getting a kernel panic in running 2.6.0test8 which I just compiled
today.
After chatting this up with #Kernelnewbies, erikm told me to post here.

http://www.gastronomicon.org/im003116.jpg

Attempt to mount a particular CD, which I'm thinking is just an ordinary
data CD.
It could be a VCD, but then I would suspect it would play on my DVD player.
Windows sees it as a data disk with one big AVI file on it.
Anyway, I was impressed by the magical symbol lookups in the crash dump,
but I really just want to mount my CD.

I am not subscribed to this list, so please CC me on any correspondence.
I will gladly help debug this.


Here's the output of ver_linux:

Linux narcissus.jump.net 2.6.0-test8 #1 Tue Oct 21 06:11:07 CDT 2003
i686 unknown

Gnu C                  3.3.1
Gnu make               3.80
util-linux             2.11i
mount                  2.11i
module-init-tools      0.9.15-pre2
e2fsprogs              1.26
reiserfsprogs          3.x.0j
pcmcia-cs              3.0.9
PPP                    2.4.2b3
Linux C Library        2.3.2
Dynamic linker (ldd)   2.3.2
Linux C++ Library      5.0.5
Procps                 2.0.2
Net-tools              1.51
Console-tools          1999.03.02
Sh-utils               1.16
Modules Loaded


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Re: Panic with mounting CD in 2.6.0test8

[Jens Axboe]

On Tue, Oct 21 2003, Ian wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> I'm getting a kernel panic in running 2.6.0test8 which I just compiled
> today.
> After chatting this up with #Kernelnewbies, erikm told me to post here.
> 
> http://www.gastronomicon.org/im003116.jpg

You should boot with vga=ext (and make sure you have CONFIG_VIDEO_SELECT
set), because the top of the oops isn't visible.

-- 
Jens Axboe

Re: Panic with mounting CD in 2.6.0test8

[Randy.Dunlap]

On Tue, 21 Oct 2003 07:11:40 -0500 Ian <brooke@jump.net> wrote:

| -----BEGIN PGP SIGNED MESSAGE-----
| Hash: SHA1
| 
| I'm getting a kernel panic in running 2.6.0test8 which I just compiled
| today.
| After chatting this up with #Kernelnewbies, erikm told me to post here.
| 
| http://www.gastronomicon.org/im003116.jpg
| 
| Attempt to mount a particular CD, which I'm thinking is just an ordinary
| data CD.
| It could be a VCD, but then I would suspect it would play on my DVD player.
| Windows sees it as a data disk with one big AVI file on it.
| Anyway, I was impressed by the magical symbol lookups in the crash dump,
| but I really just want to mount my CD.
| 
| I am not subscribed to this list, so please CC me on any correspondence.
| I will gladly help debug this.

So you can open/explore the CD in Windows?

The call stack could have scrolled off of the top of the screen.
If not, then cdrom_start_read() called cdrom_start_packet_command(),
but there's not enough info to see what went haywire in
cdrom_start_packet_command() or whether that latter function
called cdrom_start_read_continuation() which then erred or if
it called something which fumbled.  So if you can get more/better
info (from kernel log or serial console etc.), that would be very
helpful.

--
~Randy