This is a note to let you know that I've just added the patch titled can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt to the 5.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: can-j1935-j1939_tp_tx_dat_new-fix-missing-initialization-of-skbcnt.patch and it can be found in the queue-5.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Sat Oct 17 08:58:17 AM CEST 2020 From: Cong Wang <xiyou.wangcong@xxxxxxxxx> Date: Wed, 7 Oct 2020 23:18:21 -0700 Subject: can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt From: Cong Wang <xiyou.wangcong@xxxxxxxxx> [ 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@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> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/can/j1939/transport.c | 1 + 1 file changed, 1 insertion(+) --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -580,6 +580,7 @@ sk_buff *j1939_tp_tx_dat_new(struct j193 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)); Patches currently in stable-queue which might be from xiyou.wangcong@xxxxxxxxx are queue-5.8/tipc-fix-the-skb_unshare-in-tipc_buf_append.patch queue-5.8/net-sched-fix-suspicious-rcu-usage-while-accessing-tcf_tunnel_info.patch queue-5.8/net_sched-remove-a-redundant-goto-chain-check.patch queue-5.8/can-j1935-j1939_tp_tx_dat_new-fix-missing-initialization-of-skbcnt.patch