Re: [PATCH 1/2] aio: prevent double free in ioctx_alloc

[Benjamin LaHaise]

On Tue, Nov 19, 2013 at 05:33:02PM -0500, Sasha Levin wrote:
> ioctx_alloc() calls aio_setup_ring() to allocate a ring. If aio_setup_ring()
> fails to do so it would call aio_free_ring() before returning, but
> ioctx_alloc() would call aio_free_ring() again causing a double free of
> the ring.
> 
> This is easily reproducible from userspace.

I've applied this to my aio-next tree at git://git.kvack.org/~bcrl/aio-next.git
.  Please verify that it applied correctly, as that tree also includes 
another fix from Kent relating to the percpu reference bits.

		-ben
-- 
"Thought is the essence of where you are now."
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