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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2020-10-07 23:18:21 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 10:10:52 +0100 |
| commit | 52d96d227355b05d93c3e98979b507af77eb55e5 (patch) | |
| tree | 6978608b580063196fbad553c4683d384395cf6f /net | |
| parent | e0e835313cbb6cf850aed2937af5c5e5307f39ee (diff) | |
| download | linux-stable-52d96d227355b05d93c3e98979b507af77eb55e5.tar.gz linux-stable-52d96d227355b05d93c3e98979b507af77eb55e5.tar.bz2 linux-stable-52d96d227355b05d93c3e98979b507af77eb55e5.zip | |
can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt
[ Upstream commit e009f95b1543e26606dca2f7e6e9f0f9174538e5 ]
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@syzkaller.appspotmail.com
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <linux@rempel-privat.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://lore.kernel.org/r/20201008061821.24663-1-xiyou.wangcong@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/can/j1939/transport.c | 1 |
1 files changed, 1 insertions, 0 deletions
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)); |