From: Hoang Le hoang.h.le@dektech.com.au
commit 75016891357a628d2b8acc09e2b9b2576c18d318 upstream.
This reverts commit 6bf24dc0cc0cc43b29ba344b66d78590e687e046. Above fix is not correct and caused memory leak issue.
Fixes: 6bf24dc0cc0c ("net:tipc: Fix a double free in tipc_sk_mcast_rcv") Acked-by: Jon Maloy jmaloy@redhat.com Acked-by: Tung Nguyen tung.q.nguyen@dektech.com.au Signed-off-by: Hoang Le hoang.h.le@dektech.com.au Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/tipc/socket.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -840,7 +840,10 @@ void tipc_sk_mcast_rcv(struct net *net, spin_lock_bh(&inputq->lock); if (skb_peek(arrvq) == skb) { skb_queue_splice_tail_init(&tmpq, inputq); - __skb_dequeue(arrvq); + /* Decrease the skb's refcnt as increasing in the + * function tipc_skb_peek + */ + kfree_skb(__skb_dequeue(arrvq)); } spin_unlock_bh(&inputq->lock); __skb_queue_purge(&tmpq);