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can: j1939: fix memory leak if filters was set 

Filters array is coped from user space and linked to the j1939 socket.
On socket release this memory was not freed.

Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Oleksij Rempel 2019-10-10 12:50:31 +02:00 committed by Marc Kleine-Budde
parent db1a804cca
commit 896daf723c
1 changed files with 1 additions and 0 deletions
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net/can/j1939/socket.c
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@ -580,6 +580,7 @@ static int j1939_sk_release(struct socket *sock)
j1939_netdev_stop(priv); j1939_netdev_stop(priv);
} }
kfree(jsk->filters);
sock_orphan(sk); sock_orphan(sk);
sock->sk = NULL; sock->sk = NULL;