From: Tom Goff <thomas.goff@ll.mit.edu>
Date: Thu, 23 Jun 2016 20:11:57 +0000 (-0400)
Subject: ipmr/ip6mr: Initialize the last assert time of mfc entries.
X-Git-Tag: v3.14.74~51
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff790d971c10a4284c18ec4321b93246eb131e9f;p=thirdparty%2Fkernel%2Fstable.git

ipmr/ip6mr: Initialize the last assert time of mfc entries.

[ Upstream commit 70a0dec45174c976c64b4c8c1d0898581f759948 ]

This fixes wrong-interface signaling on 32-bit platforms for entries
created when jiffies > 2^31 + MFC_ASSERT_THRESH.

Signed-off-by: Tom Goff <thomas.goff@ll.mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 42809cf91488c..afdbfd65e71f9 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -883,8 +883,10 @@ static struct mfc_cache *ipmr_cache_alloc(void)
 {
 	struct mfc_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
 
-	if (c)
+	if (c) {
+		c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
 		c->mfc_un.res.minvif = MAXVIFS;
+	}
 	return c;
 }
 
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 8b61288e5746e..86d30e60242ac 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1076,6 +1076,7 @@ static struct mfc6_cache *ip6mr_cache_alloc(void)
 	struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
 	if (c == NULL)
 		return NULL;
+	c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
 	c->mfc_un.res.minvif = MAXMIFS;
 	return c;
 }