4.9-stable review patch. If anyone has any objections, please let me know.
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From: Cong Wang xiyou.wangcong@gmail.com
[ Upstream commit acb4a33e9856d5fa3384b87d3d8369229be06d31 ]
tipc_udp_xmit() drops the packet on error, there is no need to drop it again.
Fixes: ef20cd4dd163 ("tipc: introduce UDP replicast") Reported-and-tested-by: syzbot+eae585ba2cc2752d3704@syzkaller.appspotmail.com Cc: Ying Xue ying.xue@windriver.com Cc: Jon Maloy jon.maloy@ericsson.com Signed-off-by: Cong Wang xiyou.wangcong@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/tipc/udp_media.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -243,10 +243,8 @@ static int tipc_udp_send_msg(struct net }
err = tipc_udp_xmit(net, _skb, ub, src, &rcast->addr); - if (err) { - kfree_skb(_skb); + if (err) goto out; - } } err = 0; out: