kern/41310: NetBSD 5 savecore does not

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

>Number:         41310
>Category:       kern
>Synopsis:       NetBSD 5 savecore fails to recognize and save a core dump
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 30 15:40:00 +0000 2009
>Originator:     Hauke Fath
>Release:        NetBSD 5.0
>Organization:
-- 
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>Environment:
        
        
System: NetBSD Vertatscha 5.0 NetBSD 5.0 (FIFI_PF) #0: Wed Apr 29 14:13:50 CEST 
2009  hf@Hochstuhl:/var/obj/netbsd-builds/5/i386/sys/arch/i386/compile/FIFI_PF 
i386
Architecture: i386
Machine: i386
>Description:

        After a kernel panic and subsequent core dump (either
        automatically or by a 'reboot 0x104' from ddb), savecore finds
        a dump but claims it is unreadable:

[...]
Checking for core dump...
savecore: reboot after panic: panic: LOCKDEBUG
Apr 30 17:15:55 Vertatscha savecore: reboot after panic: panic: LOCKDEBUG
savecore: system went down at Thu Apr 30 17:02:46 2009
savecore: (null): Bad address
Apr 30 17:15:55 Vertatscha savecore: (null): Bad address
[...]

        I am making this 'kern' because I guess savecore is intimately
        tied to the kernel. Feel free to move the PR elsewhere.

>How-To-Repeat:

        Experience or force a system core dump. Find it's not readable.

>Fix:
        No idea.

>Unformatted: