Commit 7605c43d authored by David Lamparter's avatar David Lamparter Committed by Jens Axboe

io_uring: remove MSG_NOSIGNAL from recvmsg

MSG_NOSIGNAL is not applicable for the receiving side, SIGPIPE is
generated when trying to write to a "broken pipe".  AF_PACKET's
packet_recvmsg() does enforce this, giving back EINVAL when MSG_NOSIGNAL
is set - making it unuseable in io_uring's recvmsg.

Remove MSG_NOSIGNAL from io_recvmsg_prep().

Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: default avatarDavid Lamparter <equinox@diac24.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20230224150123.128346-1-equinox@diac24.netSigned-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 977bc873
...@@ -567,7 +567,7 @@ int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) ...@@ -567,7 +567,7 @@ int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
sr->flags = READ_ONCE(sqe->ioprio); sr->flags = READ_ONCE(sqe->ioprio);
if (sr->flags & ~(RECVMSG_FLAGS)) if (sr->flags & ~(RECVMSG_FLAGS))
return -EINVAL; return -EINVAL;
sr->msg_flags = READ_ONCE(sqe->msg_flags) | MSG_NOSIGNAL; sr->msg_flags = READ_ONCE(sqe->msg_flags);
if (sr->msg_flags & MSG_DONTWAIT) if (sr->msg_flags & MSG_DONTWAIT)
req->flags |= REQ_F_NOWAIT; req->flags |= REQ_F_NOWAIT;
if (sr->msg_flags & MSG_ERRQUEUE) if (sr->msg_flags & MSG_ERRQUEUE)
......
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