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Patch "net/ip6_tunnel: fix dst leak" has been added to the 4.3-stable tree

PATCH [email protected] 1 participant 1 message Dec 11, 2015

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

net/ip6_tunnel: fix dst leak

to the 4.3-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:
net-ip6_tunnel-fix-dst-leak.patch
and it can be found in the queue-4.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Fri Dec 11 11:38:06 EST 2015

From: Paolo Abeni <[email protected]>
Date: Wed, 18 Nov 2015 16:40:19 +0100
Subject: net/ip6_tunnel: fix dst leak

From: Paolo Abeni <[email protected]>

[ Upstream commit 206b49500df558dbc15d8836b09f6397ec5ed8bb ]

the commit cdf3464e6c6b ("ipv6: Fix dst_entry refcnt bugs in ip6_tunnel") introduced percpu storage for ip6_tunnel dst cache, but while clearing such cache it used raw_cpu_ptr to walk the per cpu entries, so cached dst on non current cpu are not actually reset.

This patch replaces raw_cpu_ptr with per_cpu_ptr, properly cleaning such storage.

Fixes cdf3464e6c6b ("ipv6: Fix dst_entry refcnt bugs in ip6_tunnel")
---
 net/ipv6/ip6_tunnel.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
net/ipv6/ip6_tunnel.c +1 -1
@@ -177,7 +177,7 @@ void ip6_tnl_dst_reset(struct ip6_tnl *t
 	int i;
 
 	for_each_possible_cpu(i)
-		ip6_tnl_per_cpu_dst_set(raw_cpu_ptr(t->dst_cache), NULL);
+		ip6_tnl_per_cpu_dst_set(per_cpu_ptr(t->dst_cache, i), NULL);
 }
 EXPORT_SYMBOL_GPL(ip6_tnl_dst_reset);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.3/openvswitch-fix-hangup-on-vxlan-gre-geneve-device-deletion.patch queue-4.3/net-ip6_tunnel-fix-dst-leak.patch