Re: 2.6.12-rc5-mm1 alsa oops

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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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