[PATCH 6.18 235/396] io_uring/net: initialize mshot_len for send

6.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jens Axboe <[email protected]>

commit c77ffbc980efb337fd750c337d8157d532ea14e5 upstream.

Commit:

6a8afb9fff64 ("io_uring/net: allow multishot receive per-invocation cap")

changed how io_mshot_prep_retry() set sr->len, and added the same
initialization in io_mshot_prep_retry(). But it neglected to touch the
send path, which may also uses the mshot retry path. Ensure that
sr->mshot_len always gets initialized correctly.

Fixes: 6a8afb9fff64 ("io_uring/net: allow multishot receive per-invocation cap")
Cc: [email protected]
Reported-by: Sung Keum <[email protected]>
Reviewed-by: Gabriel Krisman Bertazi <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 io_uring/net.c |    1 +
 1 file changed, 1 insertion(+)

--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -433,6 +433,7 @@ int io_sendmsg_prep(struct io_kiocb *req
 		req->flags |= REQ_F_NOWAIT;
 	if (req->flags & REQ_F_BUFFER_SELECT)
 		sr->buf_group = req->buf_index;
+	sr->mshot_total_len = sr->mshot_len = 0;
 	if (sr->flags & IORING_RECVSEND_BUNDLE) {
 		if (req->opcode == IORING_OP_SENDMSG)
 			return -EINVAL;