Patch "netfilter/ipvs: clear ipvs_property flag when SKB net namespace changed" has been added to the 4.4-stable tree

Patch "netfilter/ipvs: clear ipvs_property flag when SKB net namespace changed" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    netfilter/ipvs: clear ipvs_property flag when SKB net namespace changed

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     netfilter-ipvs-clear-ipvs_property-flag-when-skb-net-namespace-changed.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Tue Nov 21 15:28:16 CET 2017
From: Ye Yin <hustcat@gmail.com>
Date: Thu, 26 Oct 2017 16:57:05 +0800
Subject: netfilter/ipvs: clear ipvs_property flag when SKB net namespace changed

From: Ye Yin <hustcat@gmail.com>


[ Upstream commit 2b5ec1a5f9738ee7bf8f5ec0526e75e00362c48f ]

When run ipvs in two different network namespace at the same host, and one
ipvs transport network traffic to the other network namespace ipvs.
'ipvs_property' flag will make the second ipvs take no effect. So we should
clear 'ipvs_property' when SKB network namespace changed.

Fixes: 621e84d6f373 ("dev: introduce skb_scrub_packet()")
Signed-off-by: Ye Yin <hustcat@gmail.com>
Signed-off-by: Wei Zhou <chouryzhou@gmail.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/skbuff.h |    7 +++++++
 net/core/skbuff.c      |    1 +
 2 files changed, 8 insertions(+)

--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3400,6 +3400,13 @@ static inline void nf_reset_trace(struct
 #endif
 }
 
+static inline void ipvs_reset(struct sk_buff *skb)
+{
+#if IS_ENABLED(CONFIG_IP_VS)
+	skb->ipvs_property = 0;
+#endif
+}
+
 /* Note: This doesn't put any conntrack and bridge info in dst. */
 static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src,
 			     bool copy)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4229,6 +4229,7 @@ void skb_scrub_packet(struct sk_buff *sk
 	if (!xnet)
 		return;
 
+	ipvs_reset(skb);
 	skb_orphan(skb);
 	skb->mark = 0;
 }


Patches currently in stable-queue which might be from hustcat@gmail.com are

queue-4.4/netfilter-ipvs-clear-ipvs_property-flag-when-skb-net-namespace-changed.patch