svn commit: r201416 - head/sys/netinet
Navdeep Parhar
np at FreeBSD.org
Sun Jan 3 06:43:13 UTC 2010
Author: np
Date: Sun Jan 3 06:43:13 2010
New Revision: 201416
URL: http://svn.freebsd.org/changeset/base/201416
Log:
Avoid NULL dereference in arpresolve.
Modified:
head/sys/netinet/if_ether.c
Modified: head/sys/netinet/if_ether.c
==============================================================================
--- head/sys/netinet/if_ether.c Sun Jan 3 04:38:38 2010 (r201415)
+++ head/sys/netinet/if_ether.c Sun Jan 3 06:43:13 2010 (r201416)
@@ -372,8 +372,8 @@ retry:
if (la->la_asked < V_arp_maxtries)
error = EWOULDBLOCK; /* First request. */
else
- error =
- (rt0->rt_flags & RTF_GATEWAY) ? EHOSTUNREACH : EHOSTDOWN;
+ error = rt0 != NULL && (rt0->rt_flags & RTF_GATEWAY) ?
+ EHOSTUNREACH : EHOSTDOWN;
if (renew) {
LLE_ADDREF(la);
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