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charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Test for 5681e40d297b30f5b513 Author: syoshida@redhat.com #syz test diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c index a6fb89fa6278..df01628c6509 100644 --- a/net/can/j1939/main.c +++ b/net/can/j1939/main.c @@ -344,6 +344,9 @@ int j1939_send_one(struct j1939_priv *priv, struct sk_buff *skb) /* make it a full can frame again */ skb_put(skb, J1939_CAN_FTR + (8 - dlc)); + /* initialize unused data */ + memset(cf->data + dlc, 0, 8 - dlc); + canid = CAN_EFF_FLAG | (skcb->priority << 26) | (skcb->addr.pgn << 8) |