[PATCH 4.16 18/55] net/tls: Fix connection stall on partial tls record

From: Greg Kroah-Hartman
Date: Fri May 18 2018 - 03:22:34 EST


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

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

From: Andre Tomt <andre@xxxxxxxx>

[ Upstream commit 080324c36ade319f57e505633ab54f6f53289b45 ]

In the case of writing a partial tls record we forgot to clear the
ctx->in_tcp_sendpages flag, causing some connections to stall.

Fixes: c212d2c7fc47 ("net/tls: Don't recursively call push_record during tls_write_space callbacks")
Signed-off-by: Andre Tomt <andre@xxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/tls/tls_main.c | 1 +
1 file changed, 1 insertion(+)

--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -128,6 +128,7 @@ retry:
offset -= sg->offset;
ctx->partially_sent_offset = offset;
ctx->partially_sent_record = (void *)sg;
+ ctx->in_tcp_sendpages = false;
return ret;
}