[RFC/PATCH] mm/futex: Fix futex writes on archs with SW tracking of dirty & young

[Benjamin Herrenschmidt]

> You're not understanding me.
> 
> I need a good reason to merge this into 3.0.
> 
> The -stable maintainers need even better reasons to merge this into
> earlier kernels.
> 
> Please provide those reasons!
> 
> (Documentation/stable_kernel_rules.txt, 4th bullet)
> 
> (And it's not just me and -stable maintainers.  Distro maintainers will
> also look at this patch and wonder whether they should merge it)

Well, as an arch maintainer, I can get stable maintainers to merge
anything I CC to stable :-)

Now, the good reason should have been rather obvious... it's a user
exploitable kernel lockup.

Cheers,
Ben.