Bug#433187: linux-2.6 - [sparc64-smp] produces unkillable processes
Bernd Zeimetz wrote:
> Hi,
>
>> We (David Miller and I) are already working on this. We finally got some info
>> dump from a debugging patched kernel and I expect we will have a fix within the
>> next 3/4 weeks.
>> >From our first look it seems like a futex bug and some users have reported that
>> the latest 2.6.23-rcX do not show this behavior. Clearly we also want to figure
>> out a fix for .22.
>
> Last night an Ultrasparc II machine here shot itself again, it was
> running fine for days with a .22 kernel which has was patched with the
> diff from 179c85ea53bef807621f335767e41e23f86f01df
> Seems this doesn't fix the problem completely, but it is not as bad as
> before, it just takes much longer to produce hanging processes.
>
> Behaviour is still much worse on Ultrasparc III machines like lebrun.d.o
> and another machine here. Last kernel I've tried was 2.6.23-rc6-git7.
> Since 179c85ea53bef807621f335767e41e23f86f01df behaviour became better,
> the processes are only dead, before that patch the machine was pretty
> much frozen and didn't even react on stop+a anymore.
>
> Is there any new patch we can give a try?
No, not yet. I passed all the info to David a couple of days ago including
Bastian simple test case of running dpkg-query a few tons of times in a raw
so that should speed up the fix.
Unfortunately we depend on David to have time to look at it so we just need
to be a bit patience.
Fabio
--
I'm going to make him an offer he can't refuse.
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