Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.23
From: Karsten Wiese
Date: Wed Nov 10 2004 - 09:58:42 EST
Am Mittwoch 10 November 2004 15:20 schrieb Karsten Wiese:
> Am Mittwoch 10 November 2004 16:01 schrieb Ingo Molnar:
> > * Karsten Wiese <annabellesgarden@xxxxxxxx> wrote:
> > > Hi
> > >
> > > On SMP/HT/P4 I get:
> > > BUG: lock held at task exit time!
> > > sh/5429: BUG in __up_mutex at /home/ka/kernel/2.6/linux-2.6.9-rc1-mm3-RT/kernel/rt.c:1064
> > > BUG: sleeping function called from invalid context sh(5429) at /home/ka/kernel/2.6/linux-2.6.9-rc1-mm3-RT/kernel/rt.c:1314
> > > in_atomic():1 , irqs_disabled():0
> > hm, apparently something leaked a BKL count. Unfortunately we dont know
> > precisely what did it, only that it happened. Did this happen during
> > bootup, or during normal use. Can you trigger it arbitrarily?
> Yes, it always happens, when callling ./cvscompile script of a project, that is mounted via nfs.
> Haven't tried to do that ./cvscompile locally, should I?
./cvscompile locally is ok.
Also if I disable HT in BIOS, the machine survives the crash "./cvscompile"ing via nfs
and the next "./cvscompile"s over nfs are ok. Also if I unmount / mount the nfs share again.
So it always happens the first time calling this ./cvscompile via nfs.
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