summaryrefslogtreecommitdiff
path: root/io_uring
diff options
context:
space:
mode:
authorPavel Begunkov <asml.silence@gmail.com>2022-09-29 22:23:18 +0100
committerJens Axboe <axboe@kernel.dk>2022-09-29 17:46:04 -0600
commit6f10ae8a155446248055c7ddd480ef40139af788 (patch)
tree4aeea504d3d096124174b444ee9d8b10332aa26f /io_uring
parent46a525e199e4037516f7e498c18f065b09df32ac (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.c3
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;