Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs

Cyrill Gorcunov
2010-08-24T19:52:49Z

On Tue, Aug 24, 2010 at 10:54:58PM +0400, Cyrill Gorcunov wrote:
...
> > > | commit 4a31bebe71ab2e4f6ecd6e5f9f2ac9f0ff38ff76
> > > | Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
> > > | Date: Thu Aug 19 16:28:00 2010 +0200
> > > |
> > > | perf, x86: Fix handle_irq return values
> >
> > Has anyone else seen kernel panics when enabling the LOCKUP_DETECTOR or
> > apply Robert's patch? I keep getting a panic with unable to handle paging
> > request everytime either Robert's patch or the lockup detector uses
> > __get_cpu_var(). And only on 2.6.36 code.
> >
> > Cheers,
> > Don
> >
>
> I use 2.6.34 atm. Letme try 2.6.36 (which might require some time to recompile).
>
> -- Cyrill

Don, for me it fails with somehow unrelated page handling fault - in
reiserfs_evict_inode O_o Fails in __get_cpu_var I suspect might means
a problem either in per-cpu allocator itself or we screw pointer somehow.
Weird.

-- Cyrill