Commit 5405ff6e15f40f2f ("tipc: convert node lock to rwlock")
introduced a bug to the node reference counter handling. When a
message is successfully sent in the function tipc_node_xmit(),
we return directly after releasing the node lock, instead of
continuing and decrementing the node reference counter as we
should do.
This commit fixes this bug.
Signed-off-by: Jon Maloy <jon.ma...@ericsson.com>
---
net/tipc/node.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 3f7a4ed..fa97d96 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -1189,20 +1189,19 @@ int tipc_node_xmit(struct net *net, struct sk_buff_head
*list,
spin_unlock_bh(&le->lock);
}
tipc_node_read_unlock(n);
- if (likely(!skb_queue_empty(&xmitq))) {
+ if (likely(!rc))
tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr);
- return 0;
- }
- if (unlikely(rc == -ENOBUFS))
+ else if (rc == -ENOBUFS)
tipc_node_link_down(n, bearer_id, false);
tipc_node_put(n);
return rc;
}
- if (unlikely(!in_own_node(net, dnode)))
- return rc;
- tipc_sk_rcv(net, list);
- return 0;
+ if (likely(in_own_node(net, dnode))) {
+ tipc_sk_rcv(net, list);
+ return 0;
+ }
+ return rc;
}
/* tipc_node_xmit_skb(): send single buffer to destination
--
1.9.1
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