3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socket...@hartkopp.net>
commit bce271f255dae8335dc4d2ee2c4531e09cc67f5a upstream.
With upstream commit bb208f144cf3f59 (can: fix handling of unmodifiable
configuration options) a new can_validate() function was introduced.
When invoking 'ip link set can0 type can' without any configuration data
can_validate() tries to validate the content without taking into account that
there's totally no content. This patch adds a check for missing content.
Reported-by: ajneu <ajn...@gmail.com>
Signed-off-by: Oliver Hartkopp <socket...@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/net/can/dev.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -665,6 +665,9 @@ static int can_changelink(struct net_dev
}
}
+ if (!data)
+ return 0;
+
if (data[IFLA_CAN_CTRLMODE]) {
struct can_ctrlmode *cm;
