linux-kernel - [PATCH 3.4 030/107] NET: AX.25: Stop heartbeat timer on disconnect.

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Date:	Wed, 16 Mar 2016 16:05:24 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Richard Stearn <richard@...-stearn.demon.co.uk>,
	Ralf Baechle <ralf@...ux-mips.org>,
	"David S. Miller" <davem@...emloft.net>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 030/107] NET: AX.25: Stop heartbeat timer on disconnect.

From: Richard Stearn <richard@...-stearn.demon.co.uk>

3.4.111-rc1 review patch.  If anyone has any objections, please let me know.

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


commit da278622bf04f8ddb14519a2b8214e108ef26101 upstream.

This may result in a kernel panic.  The bug has always existed but
somehow we've run out of luck now and it bites.

Signed-off-by: Richard Stearn <richard@...-stearn.demon.co.uk>
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 net/ax25/ax25_subr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ax25/ax25_subr.c b/net/ax25/ax25_subr.c
index 1997538..3b78e84 100644
--- a/net/ax25/ax25_subr.c
+++ b/net/ax25/ax25_subr.c
@@ -264,6 +264,7 @@ void ax25_disconnect(ax25_cb *ax25, int reason)
 {
 	ax25_clear_queues(ax25);
 
+	ax25_stop_heartbeat(ax25);
 	ax25_stop_t1timer(ax25);
 	ax25_stop_t2timer(ax25);
 	ax25_stop_t3timer(ax25);
-- 
1.9.1