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Re: automatic stacktrace on panic, was: Re: Boot fail as kvm guest

On Sat, Feb 18, 2012 at 06:28:25PM +0400, Aleksej Saushev wrote:
> Manuel Bouyer <> writes:
> > As for automatically outputting stack trace on panic:
> > this can be a long output, much longer than a .e.g VGA display.
> > This means that the user has only the tail of the stack trace and
> > doesn't see the panic message, which, actually, is the most important.
> The output should go in the opposite direction then: top frames should
> be printed last.

that's not enough: you still miss the panic message.
Also, if ddb has problems while decoding the stack frame, you loose
all important informations. This situation is not uncommon, when
things start to go wrong ...

I think a few lines explaining basic ddb commands would be much better

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

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