Re: savecore(8) doesn't find dump

[Jukka Salmi <j+nbsd%2008.salmi.ch@localhost>]

Steven M. Bellovin --> current-users (2008-01-03 11:15:22 -0500):
> On Thu, 3 Jan 2008 16:48:42 +0100
> Jukka Salmi <j+nbsd%2008.salmi.ch@localhost> wrote:
> 
> > Hello,
> > 
> > on a 4.99.47 i386 system, savecore(8) is unable to save a dump even
> > though the dump seems to have been created successfully:
> > 
> >     $ shutdown -d now
> >     Shutdown NOW!
> >     [...]
> >     syncing disks... done
> >     unmounting file systems... done
> >     
> >     dumping to dev 0,1 offset 1141767
> >     dump 1014 1013 1012 [...] 3 2 1 succeeded
> >     
> >     
> >     rebooting...
> > 
> > ...but during the next boot savecore(8) doesn't find any dump.
> > 
> Try running 'savecore -v'; it may say what the problem is.  Possibly,
> adding -f will let you get your dump.

$ savecore -n
$ echo $?
1

$ savecore -v /a/crash
dumplo = 584584704 (1141767 * 512)
savecore: kvm_read: invalid translation (invalid PTE)

$ savecore -vf /a/crash
dumplo = 584584704 (1141767 * 512)
savecore: kvm_read: invalid translation (invalid PTE)
savecore: warning: /netbsd version mismatch:
        NetBSD 4.99.48 (GENERIC) #0: Thu Jan  3 22:49:59 CET 2008
        
build%moray.salmi.ch@localhost:/b/build/nbsd/c/i386/sys/arch/i386/compile/GENERIC

and     7

savecore: kvm_read: invalid translation (invalid PTE)
savecore: kvm_read: invalid translation (invalid PTE)
savecore: reboot
savecore: kvm_read: invalid translation (invalid PTE) (and _time_second is not 
defined also)
savecore: writing core to /a/crash/netbsd.4.core
savecore: writing kernel to /a/crash/netbsd.4
savecore: /dev/wd0b: kvm_clear_dump: invalid translation (invalid PTE)


This seems to be the same problem Antti mentioned. I'll file a PR.


Regards, Jukka

-- 
bashian roulette:
$ ((RANDOM%6)) || rm -rf ~