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authorPavel Begunkov <asml.silence@gmail.com>2021-05-20 13:21:20 +0100
committerJens Axboe <axboe@kernel.dk>2021-05-20 07:29:11 -0600
commitba5ef6dc8a827a904794210a227cdb94828e8ae7 (patch)
tree1c985bd07f6c61cfe7be947fe2325dd6f880a40a /block
parent7a274727702cc07d27cdebd36d1d5132abeea12f (diff)
io_uring: fortify tctx/io_wq cleanup
We don't want anyone poking into tctx->io_wq awhile it's being destroyed by io_wq_put_and_exit(), and even though it shouldn't even happen, if buggy would be preferable to get a NULL-deref instead of subtle delayed failure or UAF. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/827b021de17926fd807610b3e53a5a5fa8530856.1621513214.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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