Re: install/46355: Should INSTALL kernels drop to DDB on panic?

[Matthew Mondor <mm_lists%pulsar-zone.net@localhost>]

The following reply was made to PR install/46355; it has been noted by GNATS.

From: Matthew Mondor <mm_lists%pulsar-zone.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: install/46355: Should INSTALL kernels drop to DDB on panic?
Date: Thu, 19 Apr 2012 19:49:42 -0400

 On Thu, 19 Apr 2012 07:50:04 +0000 (UTC)
 Martin Husemann <martin%duskware.de@localhost> wrote:
 
 >  So short summary: all GENERIC/MODULAR kernels should effectively have
 >  DDB_ONPANIC=1 (or 2) as default, but 1 is the default if the option is
 >  missing (see src/sys/ddb/db_variables.c). It seems that the kernels we
 >  use for install do not have the option, so everything should be fine.
 >  
 >  If you see an instant reboot instead of ddb somewhere after a panic,
 >  something else is wrong.
 
 I wasn't aware of these details and that INSTALL kernels already drop
 to DDB on panic by default.
 
 What you're saying is also supported by a test: an install image with
 an INSTALL kernel specifically built with DDB_ONPANIC=1 was tried for
 port-amd64/46353 in hope to obtain more information, but the system
 still kept rebooting.  So something else is wrong as you suggested.
 
 Thank you for the clarification, I think that this PR can be closed.
 -- 
 Matt