Re: WARNING: at kernel/sched.c:4440 sub_preempt_count+0x81/0x95()

From: Michal Hocko
Date: Tue Jan 13 2009 - 08:21:29 EST


On Tue 13-01-09 13:34:25, Ingo Molnar wrote:
>
> * Michal Hocko <mhocko@xxxxxxx> wrote:
>
> > Hi,
> > I am not sure whether someone has already reported this, but
> > I can see the following early boot WARNING with the 2.6.29-rc1 kernel in
> > the serial console output:
> >
> > ------------[ cut here ]------------
> > WARNING: at kernel/sched.c:4440 sub_preempt_count+0x81/0x95()
>
> That one should be fixed in tip/master and it is in the to-Linus queue of
> fixes:
>
> http://people.redhat.com/mingo/tip.git/README
>
> it's this commit:
>
> 01e3eb8: Revert "sched: improve preempt debugging"
>
> if you want to cherry-pick the fix.

Thanks that fixes the issue on my end.

>
> Ingo

--
Michal Hocko
L3 team
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
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