Fix null dereference

ifa_addr_null.patch (text/plain), 838 bytes, created by Ed Wildgoose on 2009-07-21 20:43:57 UTC

--- libc/inet/getaddrinfo.c.orig	2009-07-20 21:48:23 +0100
+++ libc/inet/getaddrinfo.c	2009-07-20 22:24:41 +0100
@@ -187,6 +187,8 @@
 		}
 
 		for (runp = ifa; runp != NULL; runp = runp->ifa_next) {
+			if (runp->ifa_addr == NULL)
+				continue;
 #if defined __UCLIBC_HAS_IPV4__
 			if (runp->ifa_addr->sa_family == PF_INET)
 				seen |= SEEN_IPV4;
--- libc/inet/ifaddrs.c.orig	2009-07-20 22:25:13 +0100
+++ libc/inet/ifaddrs.c	2009-07-20 22:37:38 +0100
@@ -452,10 +452,7 @@
 
   /* Allocate memory for all entries we have and initialize next
      pointer.  */
-  ifas = (struct ifaddrs_storage *) calloc (1,
-					    (newlink + newaddr)
-					    * sizeof (struct ifaddrs_storage)
-					    + ifa_data_size);
+  ifas = calloc (1, (newlink + newaddr) * sizeof (ifas[0]) + ifa_data_size);
   if (ifas == NULL)
     {
       result = -1;