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SubjectRe: [Xen-devel] Re: OOPS and panic on 2.6.29-rc1 on xen-x86
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Hi Bryan,

> I've bisected the bug in question, and the faulty commit appears to be:
> commit e97a630eb0f5b8b380fd67504de6cedebb489003
> Author: Nick Piggin <npiggin@suse.de>
> Date: Tue Jan 6 14:39:19 2009 -0800
>
> mm: vmalloc use mutex for purge
>
> The vmalloc purge lock can be a mutex so we can sleep while a purge is
> going on (purge involves a global kernel TLB invalidate, so it can take
> quite a while).
>
> Signed-off-by: Nick Piggin <npiggin@suse.de>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
>
> The bug is easily reproducable by a kernel build on -j4 - it will
> generally OOPS and panic before the build completes.
> Also, I've tested it with ext3, and it still occurs, so it seems
> unrelated to btrfs at least :)

Nice!

Reverting this also fixes the BUG() I was seeing when testing the Dom0
patches on 2.6.29-rc1+tip. It just ran stable for an hour compiling
gimp and playing music on my notebook (and then I had to leave).

Thanks,
Christophe




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