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Date:      Wed, 05 Sep 2001 14:47:05 -0400 (EDT)
From:      "Alexander N. Kabaev" <ak03@gte.com>
To:        Zhihui Zhang <zzhang@cs.binghamton.edu>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   RE: kernel ddb help
Message-ID:  <XFMail.20010905144705.ak03@gte.com>
In-Reply-To: <Pine.SOL.4.21.0109051437200.5688-100000@onyx>

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You can use gdb on the dump file or even on live kernel after reboot to figure
out exactly what the problem was.

Use
gdb -k ./kernel.debug /dev/mem
or
gdb -k ./kernel.debug /var/crash/vmcore.<num>


On 05-Sep-2001 Zhihui Zhang wrote:
> 
> I know gdb can source stepping the kernel. But without two machines, you
> can not do it. Now I have only one machine and the system panic:
> 
> db> trace
> bqrelse(cxxx, cxxx, cxxx, cxxxx, cxxx) at bqrelse+0x25
> 
> is there a way to use these addresses to figure out which line or lines of
> source are suspect to cause the panic? Thanks.
--------------------------------------------
E-Mail: Alexander N. Kabaev <ak03@gte.com>
Date: 05-Sep-2001
Time: 14:44:40
--------------------------------------------

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