[PATCH] net: tls, update curr on splice as well

[John Fastabend <john.fastabend@gmail.com>]

commit c5a595000e2677e865a39f249c056bc05d6e55fd upstream.

Backport of upstream fix for tls on 5.x kernels.

The curr pointer must also be updated on the splice similar to how
we do this for other copy types.

Cc: stable@vger.kernel.org # 5.15.x
Cc: stable@vger.kernel.org # 5.10.x
Cc: stable@vger.kernel.org # 5.4.x
Reported-by: Jann Horn <jannh@google.com>
Fixes: d829e9c4112b ("tls: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
---
 net/tls/tls_sw.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 101d231c1b61..9ff3e4df2d6c 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1216,6 +1216,8 @@ static int tls_sw_do_sendpage(struct sock *sk, struct page *page,
 		}
 
 		sk_msg_page_add(msg_pl, page, copy, offset);
+		msg_pl->sg.copybreak = 0;
+		msg_pl->sg.curr = msg_pl->sg.end;
 		sk_mem_charge(sk, copy);
 
 		offset += copy;
-- 
2.33.0