From 26fed83653d0154704cadb7afc418f315c7ac1f0 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Tue, 20 Jun 2023 16:11:51 -0600
Subject: [PATCH] io_uring/net: use the correct msghdr union member in
io_sendmsg_copy_hdr
Rather than assign the user pointer to msghdr->msg_control, assign it
to msghdr->msg_control_user to make sparse happy. They are in a union
so the end result is the same, but let's avoid new sparse warnings and
squash this one.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306210654.mDMcyMuB-lkp@intel.com/
Fixes: cac9e4418f4c ("io_uring/net: save msghdr->msg_control for retries")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
io_uring/net.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/io_uring/net.c b/io_uring/net.c
index 2bc2cb2f4d6c2..c8a4b2ac00f78 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -203,7 +203,7 @@ static int io_sendmsg_copy_hdr(struct io_kiocb *req,
ret = sendmsg_copy_msghdr(&iomsg->msg, sr->umsg, sr->msg_flags,
&iomsg->free_iov);
/* save msg_control as sys_sendmsg() overwrites it */
- sr->msg_control = iomsg->msg.msg_control;
+ sr->msg_control = iomsg->msg.msg_control_user;
return ret;
}
@@ -302,7 +302,7 @@ int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags)
if (req_has_async_data(req)) {
kmsg = req->async_data;
- kmsg->msg.msg_control = sr->msg_control;
+ kmsg->msg.msg_control_user = sr->msg_control;
} else {
ret = io_sendmsg_copy_hdr(req, &iomsg);
if (ret)
--
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