repeatable kernel freeze

[Ahmed Abdalla]

I've had exactly the same problem on my F13 machine. I never had that
problem before, but since I upgraded to F13 my machine just freezes when I
scp any big file. I've setuped a rescue kernel and configured kdump but the
machine just "freezes" and no rescue is there. My machine is fully updated
too. I've stumbled upon this
https://bugzilla.redhat.com/show_bug.cgi?id=554069 but it seems it's
receiving very little attention. Advices are most welcome :)

I have had a problem with kernel freezes for several months. It started
> when I first moved to the 2.6.31 kernel on Fedora 12. At that time it
> was relatively infrequent. When the 2.6.32 kernel came out, the problem
> became very bad -- every night when cron.daily runs the kernel would
> hang. Note that I have tried in these instances to ping or ssh from
> another box -- this box is definitely hung. So I kept the 2.6.31 kernel
> around and only had to deal with it once every two weeks or so. It is my
> personal machine, so it was tolerable.
>
> Upon upgrade to Fedora 13 and the 2.6.33 kernel, the problem has become
> better in that I have not seen a hang during the nightly crons. However,
> now I can freeze the kernel on demand by copying a large file via ssh
> (scp or rsync). Perhaps relevant is that those cron nightly jobs include
> several rsyncs, however they are all local and do not use ssh.
>
> I have already made a bugzilla report, but have not heard a word on that.
>
> Given that I can now reproduce the problem more-or-less on demand, can
> someone tell me how to debug this? I have no experience with kernel
> debugging, but am reasonably good with gdb on user-space apps.
>
> Thanks,
>
> Joe
>
>
>
Abd4llA
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.fedoraproject.org/pipermail/users/attachments/20100705/32e8ebdb/attachment.html