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

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Message-Id: <20180518081458.356029250@linuxfoundation.org>
Date:   Fri, 18 May 2018 10:15:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Andre Tomt <andre@...t.net>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.16 18/55] net/tls: Fix connection stall on partial tls record

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

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

From: Andre Tomt <andre@...t.net>

[ 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@...t.net>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 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;
 		}