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SubjectRe: Kernel Hang ( linux 2.2.x x<=10 )
At 09:56 16/06/99 +0100, Alan Cox wrote:
>> I have seen this behaviour with stock 2.2.7, 2.2.9 and 2.2.10. I have tried
>> reproducing it with 2.2.5-22 (the latest RedHat 6.0 kernel update), but
>> NOT. That kernel seems to behave properly.

Correction. I _have_ been able to reproduce the problem with 2.2.5-22. It
is not as predictable as 2.2.10, however.

Digging further, I have compiled a stock 2.2.4, without SCSI support at all.
I couldn't reproduce the problem immediately, but will do further testing.

>When it hangs does it a) still respond to pings b) does right-alt scrolllock
>a few times show anything (you will want to be outside of X11). If so then
>the data from b) wil help find any hang. If not then you probably want
>to run the kernel debug patch and see what it reports

a) No replies to ping
b) right-alt scrolllock does nothing anymore. It works great before the
lockup, however.

The kernel debug patch you mean is the one by Scott Lurndal that can be
found at, right?
The latest patch there was for kernel 2.2.4, but as I could not reproduce
the problem reliably with that kernel, I've updated the diff file to work
on a stock 2.2.10. It is attached, maybe it can be useful to someone else.
It works for me.

What exactly do you want me to do with the kernel debugger?


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