Author: emax
Date: Mon Jun  4 18:43:51 2012
New Revision: 236575
URL: http://svn.freebsd.org/changeset/base/236575

Log:
  Plug more refcount leaks and possible NULL deref for interface
  address list.
  
  Submitted by: scottl@
  MFC after:    3 days

Modified:
  head/sys/netinet/tcp_input.c

Modified: head/sys/netinet/tcp_input.c
==============================================================================
--- head/sys/netinet/tcp_input.c        Mon Jun  4 18:17:09 2012        
(r236574)
+++ head/sys/netinet/tcp_input.c        Mon Jun  4 18:43:51 2012        
(r236575)
@@ -512,6 +512,8 @@ tcp6_input(struct mbuf **mp, int *offp, 
                            (caddr_t)&ip6->ip6_dst - (caddr_t)ip6);
                return IPPROTO_DONE;
        }
+       if (ia6)
+               ifa_free(&ia6->ia_ifa);
 
        tcp_input(m, *offp);
        return IPPROTO_DONE;
@@ -1240,7 +1242,8 @@ relocked:
                                rstreason = BANDLIM_RST_OPENPORT;
                                goto dropwithreset;
                        }
-                       ifa_free(&ia6->ia_ifa);
+                       if (ia6)
+                               ifa_free(&ia6->ia_ifa);
                }
 #endif /* INET6 */
                /*
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