diff options
| author | Patrick McHardy <kaber@trash.net> | 2005-12-13 12:26:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-12-26 16:08:55 -0800 |
| commit | b72c1d0c14634506a2ff740033ab1bda3c3d5d7f (patch) | |
| tree | 7734b794122fd4ce0514664f513044c009a870d8 | |
| parent | 1e7d00170b9215692eee2628c2a7d6af86cabfa7 (diff) | |
[PATCH] Fix unbalanced read_unlock_bh in ctnetlink
NFA_NEST calls NFA_PUT which jumps to nfattr_failure if the skb has no
room left. We call read_unlock_bh at nfattr_failure for the NFA_PUT
inside the locked section, so move NFA_NEST inside the locked section
too.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Krzysztof Piotr Oledzki <ole@ans.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_tcp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c index 0658e8f589bf..73f2153e02b9 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c @@ -341,9 +341,10 @@ static int tcp_print_conntrack(struct seq_file *s, static int tcp_to_nfattr(struct sk_buff *skb, struct nfattr *nfa, const struct ip_conntrack *ct) { - struct nfattr *nest_parms = NFA_NEST(skb, CTA_PROTOINFO_TCP); + struct nfattr *nest_parms; read_lock_bh(&tcp_lock); + nest_parms = NFA_NEST(skb, CTA_PROTOINFO_TCP); NFA_PUT(skb, CTA_PROTOINFO_TCP_STATE, sizeof(u_int8_t), &ct->proto.tcp.state); read_unlock_bh(&tcp_lock); |