diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-09-29 22:23:18 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-09-29 17:46:04 -0600 |
| commit | 6f10ae8a155446248055c7ddd480ef40139af788 (patch) | |
| tree | 4aeea504d3d096124174b444ee9d8b10332aa26f /io_uring | |
| parent | 46a525e199e4037516f7e498c18f065b09df32ac (diff) | |
io_uring/net: don't update msg_name if not provided
io_sendmsg_copy_hdr() may clear msg->msg_name if the userspace didn't
provide it, we should retain NULL in this case.
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/97d49f61b5ec76d0900df658cfde3aa59ff22121.1664486545.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/net.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/io_uring/net.c b/io_uring/net.c index 9ada9da02d04..604eac5f7a34 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -164,7 +164,8 @@ static int io_setup_async_msg(struct io_kiocb *req, } req->flags |= REQ_F_NEED_CLEANUP; memcpy(async_msg, kmsg, sizeof(*kmsg)); - async_msg->msg.msg_name = &async_msg->addr; + if (async_msg->msg.msg_name) + async_msg->msg.msg_name = &async_msg->addr; /* if were using fast_iov, set it to the new one */ if (!kmsg->free_iov) { size_t fast_idx = kmsg->msg.msg_iter.iov - kmsg->fast_iov; |