Re: sched, timers: use after free in __lock_task_sighand when exiting a process

From: Peter Zijlstra
Date: Mon Jul 14 2014 - 05:58:25 EST


On Mon, Jul 14, 2014 at 01:34:40PM +0400, Andrey Ryabinin wrote:
> On 07/14/14 13:04, Peter Zijlstra wrote:
> > On Sun, Jul 13, 2014 at 07:45:56PM -0400, Sasha Levin wrote:
> >> On 07/13/2014 05:51 PM, Sasha Levin wrote:
> >>> Hi all,
> >>>
> >>> While fuzzing with trinity inside a KVM tools guest running the latest -next
> >>> kernel with the KASAN patchset, I've stumbled on the following spew:
> >
> > WTH is a KASAN?
> >
>
> It's dynamic memory checker, detects use after free, out of bounds accesses - https://lkml.org/lkml/2014/7/9/990

How is it better/different from the existing use after free stuff? That
email fails to tell me.

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