Messages in this thread | | | Date | Tue, 24 Feb 2015 17:00:31 -0300 | Subject | Re: [ANNOUNCE] 3.18.7-rt2 | From | Gustavo Bittencourt <> |
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On Tue, Feb 24, 2015 at 2:50 PM, Mike Galbraith <umgwanakikbuti@gmail.com> wrote: > On Tue, 2015-02-24 at 13:19 -0300, Gustavo Bittencourt wrote:
>> >> The deadlock returned after I applied this patch in v3.18.7-rt2. Here is my log: > > > Hrmph. I definitely want your patch to die ;-) It adds a whole new > dimension to ww_mutex that only now exists in -rt. That's not good.
No problem.
> My > patchlet may not be perfect either, but it lets ww_mutex do that return > EALREADY business it's supposed to, vs going straight to while(1). We > can't have it both ways, so I suppose I'll fire up my old Q6600 box > (that doesn't have annoying GTX980 that my userspace can't deal with DRM > wise), and see if I can chase the nouveau thing down. I'm not all that > enthusiastic though, as there are or at least were other issues with > nouveau. Sebastian reported some completely _missing_ locking IIRC, > that led to his box exploding.
Is there anyway that I could help? I think I can write a code to reproduce the deadlock without the nouveau driver.
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