Date: Sun, 16 Jun 1996 02:21:53 +0400 (MSD) From: Dmitry Khrustalev <dima@satty.npi.msu.su> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/1325: system crash when running gated Message-ID: <199606152221.CAA09195@satty.npi.msu.su> Resent-Message-ID: <199606152230.PAA19700@freefall.freebsd.org>
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>Number: 1325
>Category: kern
>Synopsis: system crash when running gated
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Jun 15 15:30:01 PDT 1996
>Last-Modified:
>Originator: Dmitry Khrustalev
>Organization:
>Release: FreeBSD 2.2-CURRENT i386
>Environment:
FreeBSD-current, ip_output.c rev 1.40, gated
>Description:
ip_output does not allocate route when IP_ROUTETOIF is set,
system crash in arpresolve with rt0 = NULL.
>How-To-Repeat:
run gated.
>Fix:
*** ip_output.c.orig Sun Jun 16 02:10:21 1996
--- ip_output.c Sun Jun 16 02:13:47 1996
***************
*** 144,149 ****
--- 144,165 ----
dst->sin_addr = ip->ip_dst;
}
/*
+ * If this is the case, we probably don't want to allocate
+ * a protocol-cloned route since we didn't get one from the
+ * ULP. This lets TCP do its thing, while not burdening
+ * forwarding or ICMP with the overhead of cloning a route.
+ * Of course, we still want to do any cloning requested by
+ * the link layer, as this is probably required in all cases
+ * for correct operation (as it is for ARP).
+ */
+ if (ro->ro_rt == 0)
+ rtalloc_ign(ro, RTF_PRCLONING);
+ if (ro->ro_rt == 0) {
+ ipstat.ips_noroute++;
+ error = EHOSTUNREACH;
+ goto bad;
+ }
+ /*
* If routing to interface only,
* short circuit routing lookup.
*/
***************
*** 160,181 ****
ip->ip_ttl = 1;
isbroadcast = in_broadcast(dst->sin_addr, ifp);
} else {
- /*
- * If this is the case, we probably don't want to allocate
- * a protocol-cloned route since we didn't get one from the
- * ULP. This lets TCP do its thing, while not burdening
- * forwarding or ICMP with the overhead of cloning a route.
- * Of course, we still want to do any cloning requested by
- * the link layer, as this is probably required in all cases
- * for correct operation (as it is for ARP).
- */
- if (ro->ro_rt == 0)
- rtalloc_ign(ro, RTF_PRCLONING);
- if (ro->ro_rt == 0) {
- ipstat.ips_noroute++;
- error = EHOSTUNREACH;
- goto bad;
- }
ia = ifatoia(ro->ro_rt->rt_ifa);
ifp = ro->ro_rt->rt_ifp;
ro->ro_rt->rt_use++;
--- 176,181 ----
>Audit-Trail:
>Unformatted:
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