[PATCH] (11/11) netrom - fix use after free in close

[Stephen Hemminger <shemminger@xxxxxxxx>]

netrom would oops if one did:
        modprobe netrom
        ifconfig -a

because the code in destroy was freeing the socket then release_sock was
called. 

diff -Nru a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
--- a/net/netrom/af_netrom.c    Wed Aug 13 15:33:26 2003
+++ b/net/netrom/af_netrom.c    Wed Aug 13 15:33:26 2003
@@ -516,6 +516,7 @@
 
        if (sk == NULL) return 0;
 
+       sock_hold(sk);
        lock_sock(sk);
        nr = nr_sk(sk);
 
@@ -551,6 +552,7 @@
 
        sock->sk   = NULL;      
        release_sock(sk);
+       sock_put(sk);
 
        return 0;
 }