[Bug 230498] Fatal trap 12: page fault while in kernel mode in sysctl_dumpentry from sysctl NET_RT_DUMP

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230498

--- Comment #1 from ian at niw.com.au ---
The point at which it fails appears to be

Line 1559 in /usr/src/sys/net/rtsock.c

info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr;

At the point where it runs this, 

(kgdb) print rt->rt_ifp->if_addr
$3 = (struct ifaddr *) 0x0

Its trying to access via a NULL pointer.

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