io_uring: transform send/recvmsg() -ERESTARTSYS to -EINTR

We should never return -ERESTARTSYS to userspace, transform it into
-EINTR.

Cc: stable@vger.kernel.org # v5.3+
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 5cab7a0..a91743e 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1917,6 +1917,8 @@ static int io_send_recvmsg(struct io_kiocb *req, const struct io_uring_sqe *sqe,
                ret = fn(sock, msg, flags);
                if (force_nonblock && ret == -EAGAIN)
                        return ret;
+               if (ret == -ERESTARTSYS)
+                       ret = -EINTR;
        }
 
        io_cqring_add_event(req, ret);