From: Pravin B Shelar <pshelar@nicira.com>
Date: Mon, 29 Apr 2013 20:52:01 +0000 (+0000)
Subject: netlink: Fix skb ref counting.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ae6164adeb559db1828d4abd917971b61130f72e;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

netlink: Fix skb ref counting.

Commit f9c2288837ba072b21dba955f04a4c97eaa77b1e (netlink:
implement memory mapped recvmsg) increamented skb->users
ref count twice for a dump op which does not look right.

Following patch fixes that.

CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index d9c7869312c1..12ac6b47a35c 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2504,7 +2504,6 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
 	cb->data = control->data;
 	cb->module = control->module;
 	cb->min_dump_alloc = control->min_dump_alloc;
-	atomic_inc(&skb->users);
 	cb->skb = skb;
 
 	sk = netlink_lookup(sock_net(ssk), ssk->sk_protocol, NETLINK_CB(skb).portid);