From: Pavel Begunkov <asml.silence@xxxxxxxxx>
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@xxxxxxxxxxxxxxx # v5.5+
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/io_uring.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3587,6 +3587,7 @@ static int io_sendmsg_prep(struct io_kio
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);
@@ -3774,6 +3775,7 @@ static int __io_compat_recvmsg_copy_hdr(
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
