This is a note to let you know that I've just added the patch titled crypto: algif_skcipher - EBUSY on aio should be an error to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: crypto-algif_skcipher-ebusy-on-aio-should-be-an-erro.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit b90ed03ce5ac7d2d9a96a715b3feced35e040c51 Author: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Date: Fri Jul 31 17:03:27 2020 +1000 crypto: algif_skcipher - EBUSY on aio should be an error [ Upstream commit 2a05b029c1ee045b886ebf9efef9985ca23450de ] I removed the MAY_BACKLOG flag on the aio path a while ago but the error check still incorrectly interpreted EBUSY as success. This may cause the submitter to wait for a request that will never complete. Fixes: dad419970637 ("crypto: algif_skcipher - Do not set...") Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index 478f3b8f5bd52..ee8890ee8f332 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -123,7 +123,7 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg, crypto_skcipher_decrypt(&areq->cra_u.skcipher_req); /* AIO operation in progress */ - if (err == -EINPROGRESS || err == -EBUSY) + if (err == -EINPROGRESS) return -EIOCBQUEUED; sock_put(sk);