Re: 2.6.12-rc5-mm1 alsa oops

[Wolfgang Wander <wwc@rentec.com>]

Lee Revell wrote:
> On Thu, 2005-05-26 at 20:12 +0200, Borislav Petkov wrote:
>
> > On Thursday 26 May 2005 20:01, Lee Revell wrote:
> >
> > > On Thu, 2005-05-26 at 19:44 +0200, Borislav Petkov wrote:
> > >
> > > > <snip>
> > > >
> > > > Andrew,
> > > >
> > > > similar oopses as the one I'm replying to all over the place. At it
> > > > happens m in snd_pcm_mmap_data_close(). Here's a stack trace:
> > >
> > > No one using ALSA CVS or any of the 1.0.9 release candidates ever
> > > reported this, but lots of -mm users are... does that help at all?  I
> > > suspect some upstream bug that ALSA just happens to trigger.
> >
> > yeah,
> >
> > this has to do with alsa indirectly. snd_pcm_mmap_data_close() accesses some 
> > vm_area_struct->vm_private_data and apparently there have been some 
> > optimizations to mmap code to avoid fragmentation of vma's so i think there's 
> > the problem. However, we'll need the smarter ones here :))
>
>
> Any idea which patches to back out?


avoiding-mmap-fragmentation-fix-2.patch

seems to do the trick. Ken will likely have a fix-3 shortly ;-)

            Wolfgang
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