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io_uring: fix missing msg_name assignment 

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 <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-07-12 13:23:08 +03:00 committed by Jens Axboe
parent 309fc03a32
commit dd821e0c95
1 changed files with 2 additions and 0 deletions
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2
fs/io_uring.c
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@ -3553,6 +3553,7 @@ 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);
@ -3734,6 +3735,7 @@ 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