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kern/40004: ps core dumps when working on kernel core dump

>Number:         40004
>Category:       kern
>Synopsis:       ps core dumps when working on kernel core dump
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Nov 22 14:05:00 +0000 2008
>Originator:     Manuel Bouyer
>Release:        NetBSD 5.0_BETA
System: NetBSD 5.0_BETA NetBSD 5.0_BETA (ANTIOCHE5) #2: Thu 
Nov 20 23:55:28 CET 2008 
Architecture: i386
Machine: i386
        ps cores dump when working on a kernel core dump:
antioche:/var/crash#ps -N netbsd.10 -M netbsd.10.core -axu
Segmentation fault (core dumped)
Core was generated by `ps'.
Program terminated with signal 11, Segmentation fault.
#0  0xbbbcb46a in kvm_getproc2 () from /lib/
(gdb) where
#0  0xbbbcb46a in kvm_getproc2 () from /lib/
#1  0x0804c596 in main ()

        make kernel crash and dump core
        try to read process states from core dump

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