3.12-stable review patch. If anyone has any objections, please let me know.
------------------ From: Sasha Levin <[email protected]> commit d558023207e008a4476a3b7bb8706b2a2bf5d84f upstream. 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. Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Benjamin LaHaise <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/aio.c | 1 - 1 file changed, 1 deletion(-) --- a/fs/aio.c +++ b/fs/aio.c @@ -661,7 +661,6 @@ static struct kioctx *ioctx_alloc(unsign err_cleanup: aio_nr_sub(ctx->max_reqs); err: - aio_free_ring(ctx); free_percpu(ctx->cpu); free_percpu(ctx->reqs.pcpu_count); free_percpu(ctx->users.pcpu_count); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
