Re: sched: memory corruption on completing completions

From: Peter Zijlstra
Date: Thu Feb 05 2015 - 04:30:39 EST


On Wed, Feb 04, 2015 at 04:16:54PM -0800, Linus Torvalds wrote:
>
> Why did I think we had this bug but already fixed it ? Maybe it's one
> of those things that Waiman fixed in his long delayed qspinlock
> series? Waiman?

ISTR that that would do the exact same thing, but I need to go look a
the latest paravirt code -- that's the part that we all were still
bothered with.

> Or maybe I just remember the fixes where we changed
> from a mutex to a spinlock, which fixed a very similar case for
> non-paravirtualized cases.

I think we had a non paravirt mutex case last year or so.
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