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| author | Sasha Levin <sasha.levin@oracle.com> | 2015-01-13 12:46:41 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-13 17:26:27 -0500 |
| commit | 357c4774b5b08878d980847f496af38869e7aad0 (patch) | |
| tree | 52cd1f70e80d3a03671539a8795a8d2201915ae5 /net | |
| parent | 86cfeab6b510a2fe94683bf71f9b96b686e2e0ce (diff) | |
| download | linux-357c4774b5b08878d980847f496af38869e7aad0.tar.bz2 | |
tipc: correctly handle releasing a not fully initialized sock
Commit f2f9800d4955 "tipc: make tipc node table aware of net
namespace" has added a dereference of sock->sk before making sure it's
not NULL, which makes releasing a tipc socket NULL pointer dereference
for sockets that are not fully initialized.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/tipc/socket.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index c9c34a667921..720fda6cc2e6 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -470,8 +470,8 @@ static void tipc_sk_callback(struct rcu_head *head) static int tipc_release(struct socket *sock) { struct sock *sk = sock->sk; - struct net *net = sock_net(sk); - struct tipc_net *tn = net_generic(net, tipc_net_id); + struct net *net; + struct tipc_net *tn; struct tipc_sock *tsk; struct sk_buff *skb; u32 dnode, probing_state; @@ -483,6 +483,9 @@ static int tipc_release(struct socket *sock) if (sk == NULL) return 0; + net = sock_net(sk); + tn = net_generic(net, tipc_net_id); + tsk = tipc_sk(sk); lock_sock(sk); |