Re: kernel deadlock

[Gerlando Falauto <gerlando.falauto@keymile.com>]

Hi Stephen,
 >
> Just curious. Do you have this patch from 3.11 applied to your 3.10
> kernel tree?

Nope, I didn't. But I applied it, and it doesn't seem to make a 
difference, unfortunately. :-(

Thanks for your help anyway!
Gerlando

>
> commit 971ee28cbd1ccd87b3164facd9359a534c1d2892
> Author: Peter Zijlstra <peterz@infradead.org>
> Date:   Fri Jun 28 11:18:53 2013 +0200
>
>      sched: Fix HRTICK
>
>      David reported that the HRTICK sched feature was borken; which was
> enough
>      motivation for me to finally fix it ;-)
>
>      We should not allow hrtimer code to do softirq wakeups while holding
> schedul
> er
>      locks. The hrtimer code only needs this when we accidentally try to
> program
> an
>      expired time. We don't much care about those anyway since we have
> the regula
> r
>      tick to fall back to.
>
>      Reported-by: David Ahern <dsahern@gmail.com>
>      Tested-by: David Ahern <dsahern@gmail.com>
>      Signed-off-by: Peter Zijlstra <peterz@infradead.org>
>      Link:
> http://lkml.kernel.org/r/20130628091853.GE29209@dyad.programming.kicks
> -ass.net
>      Signed-off-by: Ingo Molnar <mingo@kernel.org>
>