From: Hrvoje Zeba <zeba.hrvoje@gmail.com>
Date: Mon, 25 Nov 2019 19:40:22 +0000 (-0500)
Subject: io_uring: remove superfluous check for sqe->off in io_accept()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8042d6ce8c40df0abb0d91662a754d074a3d3f16;p=linux.git

io_uring: remove superfluous check for sqe->off in io_accept()

This field contains a pointer to addrlen and checking to see if it's set
returns -EINVAL if the caller sets addr & addrlen pointers.

Fixes: 17f2fe35d080 ("io_uring: add support for IORING_OP_ACCEPT")
Signed-off-by: Hrvoje Zeba <zeba.hrvoje@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index b6c6fdc12de7d..7412fdefa35a0 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1965,7 +1965,7 @@ static int io_accept(struct io_kiocb *req, const struct io_uring_sqe *sqe,
 
 	if (unlikely(req->ctx->flags & (IORING_SETUP_IOPOLL|IORING_SETUP_SQPOLL)))
 		return -EINVAL;
-	if (sqe->ioprio || sqe->off || sqe->len || sqe->buf_index)
+	if (sqe->ioprio || sqe->len || sqe->buf_index)
 		return -EINVAL;
 
 	addr = (struct sockaddr __user *) (unsigned long) READ_ONCE(sqe->addr);