Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6

2 files changed, 14 insertions, 8 deletions

diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index b83c530c5e0a..eeeb8bc73982 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -424,6 +424,16 @@ __nf_conntrack_confirm(struct sk_buff *skb)
 
         spin_lock_bh(&nf_conntrack_lock);
 
+        /* We have to check the DYING flag inside the lock to prevent
+           a race against nf_ct_get_next_corpse() possibly called from
+           user context, else we insert an already 'dead' hash, blocking
+           further use of that particular connection -JM */
+
+        if (unlikely(nf_ct_is_dying(ct))) {
+                spin_unlock_bh(&nf_conntrack_lock);
+                return NF_ACCEPT;
+        }
+
         /* See if there's one in the list already, including reverse:
            NAT could have grabbed it without realizing, since we're
            not in the hash.  If there is, we lost race. */
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index b20f4275893c..53d892210a04 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1393,10 +1393,8 @@ static int sip_help_tcp(struct sk_buff *skb, unsigned int protoff,
 
         nf_ct_refresh(ct, skb, sip_timeout * HZ);
 
-        if (skb_is_nonlinear(skb)) {
-                pr_debug("Copy of skbuff not supported yet.\n");
-                return NF_ACCEPT;
-        }
+        if (unlikely(skb_linearize(skb)))
+                return NF_DROP;
 
         dptr = skb->data + dataoff;
         datalen = skb->len - dataoff;
@@ -1455,10 +1453,8 @@ static int sip_help_udp(struct sk_buff *skb, unsigned int protoff,
 
         nf_ct_refresh(ct, skb, sip_timeout * HZ);
 
-        if (skb_is_nonlinear(skb)) {
-                pr_debug("Copy of skbuff not supported yet.\n");
-                return NF_ACCEPT;
-        }
+        if (unlikely(skb_linearize(skb)))
+                return NF_DROP;
 
         dptr = skb->data + dataoff;
         datalen = skb->len - dataoff;