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

[Hubert Feyrer <hubert%feyrer.de@localhost>]

On Fri, 17 Feb 2012, Andreas Gustafsson wrote:
> > 1) Introduce a new sysctl ddb.stacktrace, which is on by default
> > 2) Set ddb.commandonenter to 'bt' by default
> > 3) Do it like OpenBSD and yell at the users in an all-capslock message
>
> Whichever we choose, we should also make sure ddb is actually entered,
> or that we get a stack trace whether ddb is entered or not.
> Currently, your chances of getting a stack trace depend on whether the
> the rc scripts have been run yet, because /etc/sysctl.conf sets
> ddb.onpanic=0.

I think that's ortogonal - for a report, the user doesn't need DDB in the 
first place - he just needs the stack backtrace.
Of course not entering DDB, printing stuff and the immediately rebooting 
is not useful, either...


 - Hubert