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

[Thor Lancelot Simon <tls%panix.com@localhost>]

On Sat, Feb 18, 2012 at 04:05:22PM -0600, David Young wrote:
> On Sat, Feb 18, 2012 at 08:05:23PM +0100, Manuel Bouyer wrote:
> > On Sat, Feb 18, 2012 at 12:09:02PM -0600, David Young wrote:
> > > > that's not enough: you still miss the panic message.
> > > 
> > > That's a good point, however, can't we print the panic message again, or
> > > else postpone printing it?
> > 
> > if things go wrong when printing the stack trace, you also loose
> > the panic message. that's the worse possible senario.
> 
> Why should anything go wrong when printing the stack trace?  I realize
> that, in practice, things *do* go wrong, but aren't these defects in our
> stack trace code?

No -- what if the stack was damaged so you fault while trying to unwind it?

Thor