[Nouveau] nouveau/ttm: BUG in ttm_bo_release_list

Kai Ruhnau kai at tragetaschen.dyndns.org
Sat Oct 9 06:53:58 PDT 2010

 On 09/18/2010 01:18 PM, Marcin Slusarz wrote:
> On Sat, Sep 18, 2010 at 09:39:21AM +1000, Ben Skeggs wrote:
>> On Fri, 2010-09-17 at 19:43 +0200, Marcin Slusarz wrote:
>>> Hi
>>> Since upgrade from 2.6.35 to 2.6.36-rc3 (nouveau tree) I'm hitting this bug a couple of times a day:
>>> this is BUG_ON(atomic_read(&bo->cpu_writers));
>>> I'm on b642f07208988270ac402d2548d42dab1d5fec92 "drm/nv50: fix 100c90 write on nva3".
>>> If you have any patches / ideas how to debug this, let me know.
>> I've actually seen this a couple of times.  It appears I was incorrectly
>> blaming some patches I have in progress for it, the problem appeared to
>> go away when I reverted them.  Perhaps it's more random.  I have no
>> current ideas however.
> Heh, Francisco provided the patch on IRC, which seem to fix this bug.
> http://annarchy.freedesktop.org/~currojerez/nouveau_cpu_prep_validate.patch
> I'm still testing it.


How is this fix working out?


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