From: Cong Wang <xiyou.wangcong@xxxxxxxxx> This fixes an uninit-value warning: BUG: KMSAN: uninit-value in can_receive+0x26b/0x630 net/can/af_can.c:650 Reported-and-tested-by: syzbot+3f3837e61a48d32b495f@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") Cc: Robin van der Gracht <robin@xxxxxxxxxxx> Cc: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx> Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx> Cc: Oliver Hartkopp <socketcan@xxxxxxxxxxxx> Cc: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx> Link: https://lore.kernel.org/r/20201008061821.24663-1-xiyou.wangcong@xxxxxxxxx Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> --- net/can/j1939/transport.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c index 0cec4152f979..88cf1062e1e9 100644 --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -580,6 +580,7 @@ sk_buff *j1939_tp_tx_dat_new(struct j1939_priv *priv, skb->dev = priv->ndev; can_skb_reserve(skb); can_skb_prv(skb)->ifindex = priv->ndev->ifindex; + can_skb_prv(skb)->skbcnt = 0; /* reserve CAN header */ skb_reserve(skb, offsetof(struct can_frame, data)); -- 2.28.0