io_uring: recycle kbuf recycle on tw requeue

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[ Upstream commit 336d28a8f3 ]

When we queue a request via tw for execution it's not going to be
executed immediately, so when io_queue_async() hits IO_APOLL_READY
and queues a tw but doesn't try to recycle/consume the buffer some other
request may try to use the the buffer.

Fixes: c7fb19428d ("io_uring: add support for ring mapped supplied buffers")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a19bc9e211e3184215a58e129b62f440180e9212.1662480490.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Pavel Begunkov 2022-09-06 17:11:17 +01:00 • committed by Greg Kroah-Hartman

parent 89fcb70f1a

commit dde284a85f

1 changed files with 1 additions and 0 deletions

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io_uring/io_uring.c

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