Re: Linux 2.1.131ac3

[Gadi Oxman]

Hi,

Michel, and anyone else who is able to reproduce the kernel
crash, please compile ide-scsi with the:

	#define IDESCSI_DEBUG_LOG	0

define in line 53 of drivers/scsi/ide-scsi.c changed into

	#define IDESCSI_DEBUG_LOG	1

This will log the SCSI traffic between/to the ATAPI drive, and
might help us to see where in particular this drive is responding
differently than other drives, and which code path is triggered
as a consequence.

Gadi

On Mon, 7 Dec 1998, David Woodhouse wrote:

> 
> [e-mail] said:
> >  I always considered the multiple detection to be a minor
> > inconvenience which is a bit dangerous to fix, as instead of detecting
> > a device 8 times in the worst case, we might actually miss a real
> > multi-lun device when such a heuristic is being used, and prevent
> > access to lun > 0. 
> 
> The multiple detection _was_ just a minor inconvenience. However, fixing it 
> just happened to avoid an oops elsewhere, which always happens after an HP8100 
> is detected 8 times.
> 
> I'm going to be away for a while, but if someone could fix the original 
> problem, then we wouldn't need this workaround. An alternative workaround 
> would be to add the HP8100 to the blacklist, but fixing the real problem 
> would be preferable.
> 
>  Vendor: HP        Model: CD-Writer+ 8100   Rev: 1.0g
>   Type:   CD-ROM                             ANSI SCSI revision: 02
> 
> Unfortunately, the only properly decoded oops I've seen isn't very helpful...
> 
> >> >>EIP: c0109a65 <show_registers+24d/280>
> >> Trace: c4800000
> >> Trace: c0109ac8 <die+30/38>
> 
> Michel - could you repeat the problem, and try to catch the _first_ oops of 
> the pair. Then decode it as you did the other one, and post it to the mailing 
> list. Someone should then be able to take a closer look, and if they don't 
> then I'll have a look when I get back in a fortnight.
> 
> Try using a bigger video mode, if the first one was scrolling off-screen.
> 
> ----                                 ----                                 ----
> David Woodhouse        [e-mail]       Office: ([phone]
>  Project Leader,     Process Information Systems      Mobile: [phone]
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>              finger [e-mail] for PGP key.
> 
> 
> 
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