io_uring: add ->splice_fd_in checks

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->splice_fd_in is used only by splice/tee, but no other request checks
it for validity. Add the check for most of request types excluding
reads/writes/sends/recvs, we don't want overhead for them and can leave
them be as is until the field is actually used.

Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f44bc2acd6777d932de3d71a5692235b5b2b7397.1629451684.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-08-20 10:36:37 +01:00 • committed by Jens Axboe

parent 2c5d763c19

commit 26578cda3d

1 changed files with 30 additions and 22 deletions

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fs/io_uring.c

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