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Fix a bug in ifa_ifwithnet() which caused a page fault in bcmp()

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when attepmting to add certain types of routes.  This problem
only manifested itself in the presence of unconfigured point-to-point
interfaces.

Noticed by: Chuck Cranor <chuck@maria.wustl.edu>
This commit is contained in:
Garrett Wollman 1996-07-24 19:59:53 +00:00
parent 5e2d069649
commit fcd6781acb
1 changed files with 3 additions and 2 deletions
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5
sys/net/if.c
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)if.c 8.3 (Berkeley) 1/4/94
* $Id: if.c,v 1.32 1996/06/12 19:23:59 gpalmer Exp $
* $Id: if.c,v 1.33 1996/07/11 16:32:26 wollman Exp $
*/
#include <sys/param.h>
@ -236,7 +236,8 @@ ifa_ifwithnet(addr)
if (ifa->ifa_addr->sa_family != af)
next: continue;
if (ifp->if_flags & IFF_POINTOPOINT) {
if (equal(addr, ifa->ifa_dstaddr))
if (ifa->ifa_dstaddr != 0
&& equal(addr, ifa->ifa_dstaddr))
return (ifa);
} else {
if (ifa->ifa_netmask == 0)