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can: purge socket error queue on sock destruct

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commit fd704bd5ee749d560e86c4f1fd2ef486d8abf7cf upstream.

CAN supports software tx timestamps as of the below commit. Purge
any queued timestamp packets on socket destroy.

Fixes: 51f31cabe3ce ("ip: support for TX timestamps on UDP and RAW sockets")
Reported-by: syzbot+a90604060cb40f5bdd16@syzkaller.appspotmail.com
Signed-off-by: Willem de Bruijn <willemb@google.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Willem de Bruijn 2019-06-07 16:46:07 -04:00 committed by prashantpaddune
parent c48aedf9b4
commit b022ef010c
1 changed files with 1 additions and 0 deletions
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net/can/af_can.c
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@ -113,6 +113,7 @@ EXPORT_SYMBOL(can_ioctl);
static void can_sock_destruct(struct sock *sk) static void can_sock_destruct(struct sock *sk)
{ {
skb_queue_purge(&sk->sk_receive_queue); skb_queue_purge(&sk->sk_receive_queue);
skb_queue_purge(&sk->sk_error_queue);
} }
static const struct can_proto *can_get_proto(int protocol) static const struct can_proto *can_get_proto(int protocol)