io_uring: fix EIOCBQUEUED iter revert
iov_iter_revert() is done in completion handlers that happensf before read/write returns -EIOCBQUEUED, no need to repeat reverting afterwards. Moreover, even though it may appear being just a no-op, it's actually races with 1) user forging a new iovec of a different size 2) reissue, that is done via io-wq continues completely asynchronously. Fixes: 3e6a0d3c ("io_uring: fix -EAGAIN retry with IOPOLL") Signed-off-by:Pavel Begunkov <asml.silence@gmail.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
696ee88a
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