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(parent: 6b668c9) | patch
io_uring: fix flush req->refs underflow
authorPavel Begunkov <asml.silence@gmail.com>
Tue, 26 May 2020 17:34:02 +0000 (20:34 +0300)
committerJens Axboe <axboe@kernel.dk>
Tue, 26 May 2020 19:31:08 +0000 (13:31 -0600)
commit4518a3cc273cf82efdd36522fb1f13baad173c70
tree73d08aa2e395a8f794c0313da1f8ac6e65dc7b81tree | snapshot
parent6b668c9b7fc6fc0c313cdaee8b75d17f4d954ab5commit | diff
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>
fs/io_uring.c diff | blob | history
Domain: System / Kernel;