From 589ee21964cb56bcea441fa9785027b304486e47 Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Sun, 12 Jul 2020 13:23:08 +0300 Subject: [PATCH] io_uring: fix missing msg_name assignment to #29276773 commit dd821e0c95a64b5923a0c57f07d3f7563553e756 upstream. Ensure to set msg.msg_name for the async portion of send/recvmsg, as the header copy will copy to/from it. Cc: stable@vger.kernel.org # v5.5+ Signed-off-by: Pavel Begunkov Signed-off-by: Jens Axboe Signed-off-by: Jiufei Xue Reviewed-by: Joseph Qi --- fs/io_uring.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index b652e7f4b4db..e29103a07bba 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3541,6 +3541,7 @@ static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) if (req->flags & REQ_F_NEED_CLEANUP) return 0; + io->msg.msg.msg_name = &io->msg.addr; io->msg.iov = io->msg.fast_iov; ret = sendmsg_copy_msghdr(&io->msg.msg, sr->msg, sr->msg_flags, &io->msg.iov); @@ -3722,6 +3723,7 @@ static int __io_compat_recvmsg_copy_hdr(struct io_kiocb *req, static int io_recvmsg_copy_hdr(struct io_kiocb *req, struct io_async_ctx *io) { + io->msg.msg.msg_name = &io->msg.addr; io->msg.iov = io->msg.fast_iov; #ifdef CONFIG_COMPAT -- GitLab