tree 73d08aa2e395a8f794c0313da1f8ac6e65dc7b81
parent 6b668c9b7fc6fc0c313cdaee8b75d17f4d954ab5
author Pavel Begunkov <asml.silence@gmail.com> 1590514442 +0300
committer Jens Axboe <axboe@kernel.dk> 1590521468 -0600

io_uring: fix flush req->refs underflow

In io_uring_cancel_files(), after refcount_sub_and_test() leaves 0
req->refs, it calls io_put_req(), which would also put a ref. Call
io_free_req() instead.

Cc: stable@vger.kernel.org
Fixes: 2ca10259b418 ("io_uring: prune request from overflow list on flush")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>