Messages in this thread Patch in this message | | | Date | Mon, 13 Oct 2014 14:50:32 +0800 | Subject | [PATCH] netfilter: release skbuf when nlmsg put fail | From | Houcheng Lin <> |
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When system is under heavy loading, the __nfulnl_send() may may failed to put nlmsg into skbuf of nfulnl_instance. If not clear the skbuff on failed, the __nfulnl_send() will still try to put next nlmsg onto this half-full skbuf and cause the user program can never receive packet.
This patch fix this issue by releasing skbuf immediately after nlmst put failed.
Signed-off-by: Houcheng Lin <houcheng@gmail.com>
--- net/netfilter/nfnetlink_log.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index a11c5ff..0cb9ede 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -358,10 +358,9 @@ __nfulnl_send(struct nfulnl_instance *inst) } status = nfnetlink_unicast(inst->skb, inst->net, inst->peer_portid, MSG_DONTWAIT); - +out: inst->qlen = 0; inst->skb = NULL; -out: return status; }
-- 1.7.9.5
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