can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt

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: [email protected] Fixes: 9d71dd0 ("can: add support of SAE J1939 protocol") Cc: Robin van der Gracht <[email protected]> Cc: Oleksij Rempel <[email protected]> Cc: Pengutronix Kernel Team <[email protected]> Cc: Oliver Hartkopp <[email protected]> Cc: Marc Kleine-Budde <[email protected]> Signed-off-by: Cong Wang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Marc Kleine-Budde <[email protected]>
niw · Oct 8, 2020 · e009f95 · e009f95
1 parent 81f1f5a
commit e009f95
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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));