On Fri, Jul 10, 2015 at 5:02 PM, Jeff Layton
<[email protected]> wrote:
> So, William has done some testing and hit some problems with this
> patch. I suspect that it's because we can end up running an unlock
> after the filp->f_count has already gone to zero and are in __fput, so
> we take an extra reference and end up with a use-after-free.
>
> I think it'd be best to revert this patch from all kernels for now
> (mainline and stable). I don't think the one that changes the setlk
> codepath is susceptible to this, but it's probably fine to hold off on
> applying both until I can sort out a better way to fix this one.

I also think it's safer to revert both of them.

-- 
William
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