In tipc_rcv(), we linearize only the header and usually the packets are consumed as the nodes permit direct reception. However, if the skb contains tunnelled message due to fail over or synchronization we parse it in tipc_node_check_state() without performing linearization. This will cause link disturbances if the skb was non linear.
In this commit, we perform linearization for the above messages. Signed-off-by: Parthasarathy Bhuvaragan <[email protected]> --- net/tipc/node.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/tipc/node.c b/net/tipc/node.c index e062ef0f01dd..8b08c3952ee7 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -1559,6 +1559,8 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b) /* Check/update node state before receiving */ if (unlikely(skb)) { + if (unlikely(skb_linearize(skb))) + goto discard; tipc_node_write_lock(n); if (tipc_node_check_state(n, skb, bearer_id, &xmitq)) { if (le->link) { -- 2.1.4 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ tipc-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/tipc-discussion
