Date: Thu, 21 Jan 2010 10:12:22 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r202739 - stable/8/sys/netinet Message-ID: <201001211012.o0LACMDt092848@svn.freebsd.org>
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Author: np Date: Thu Jan 21 10:12:21 2010 New Revision: 202739 URL: http://svn.freebsd.org/changeset/base/202739 Log: MFC r201416: Avoid NULL dereference in arpresolve. Requested by: kib@ Modified: stable/8/sys/netinet/if_ether.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/netinet/if_ether.c ============================================================================== --- stable/8/sys/netinet/if_ether.c Thu Jan 21 10:09:19 2010 (r202738) +++ stable/8/sys/netinet/if_ether.c Thu Jan 21 10:12:21 2010 (r202739) @@ -366,8 +366,8 @@ 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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