kern/54559: reproducable panic in routing cache code

[martin%NetBSD.org@localhost]

>Number:         54559
>Category:       kern
>Synopsis:       reproducable panic in routing cache code
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep 19 11:35:00 +0000 2019
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.12
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD space-truckin.duskware.de 9.99.12 NetBSD 9.99.12 (GENERIC) #7: Thu Sep 19 07:12:32 CEST 2019 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/compile/GENERIC evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:

On a networked machine do:

  cd /usr/tests/lib/libc/rpc && atf-run

Watch the kernel die with:

[ 8281.9339213] panic: kernel diagnostic assertion "ro->ro_sa != NULL || ro->_ro_rt == NULL" failed: file "../../../../net/route.h", line 481 
[ 8281.9490152] cpu0: Begin traceback...
[ 8281.9490152] 0x9a7cbd8c: netbsd:db_panic+0x14
[ 8281.9552516] 0x9a7cbda4: netbsd:vpanic+0x194
[ 8281.9552516] 0x9a7cbdbc: netbsd:__aeabi_uldivmod
[ 8281.9652559] 0x9a7cbdfc: netbsd:rtcache_lookup2+0x138
[ 8281.9652559] 0x9a7cbeec: netbsd:ip6_input+0xb60
[ 8281.9761998] 0x9a7cbf44: netbsd:ip6intr+0xa4
[ 8281.9761998] 0x9a7cbfac: netbsd:softint_dispatch+0x120
[ 8281.9871177] Bad frame pointer: 0x80b29f54
[ 8281.9871177] cpu0: End traceback...


>How-To-Repeat:
s/a

>Fix:
n/a