Date: Thu, 18 Jun 1998 13:21:01 +0200 (CEST) From: Stefan Eggers <seggers@semyam.dinoco.de> To: FreeBSD-gnats-submit@FreeBSD.ORG Cc: seggers@semyam.dinoco.de Subject: docs/6980: Handbook addition in kernel debugging section Message-ID: <199806181121.NAA05554@semyam.dinoco.de>
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>Number: 6980
>Category: docs
>Synopsis: Handbook addition in kernel debugging section
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-doc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Thu Jun 18 07:20:00 PDT 1998
>Last-Modified:
>Originator: Stefan Eggers
>Organization:
none
>Release: FreeBSD 2.2.6-STABLE i386
>Environment:
N/A
>Description:
I wanted to do some analysis on a crash dump I had and thus
had to use a debugger. As I found gdb not good enough for displaying
code and data (I have X11 running after all and with that it can be
much nice) investigated the possibility of using ddd to do it. This
worked and I think adding a small paragraph to the handbook might help
others in the same situation.
>How-To-Repeat:
N/A
>Fix:
Adding the word ddd to the section heading would probably be a
good idea, too. That is not included in this patch.
*** kerneldebug.sgml 1998/05/29 22:00:49 1.18
--- kerneldebug.sgml 1998/06/18 11:12:17
***************
*** 76,81 ****
--- 76,88 ----
and voila, you can debug the crash dump using the kernel sources
just like you can for any other program.
+ Even debugging with ddd is possible. Just add option <tt>-k</tt> to
+ the command line you'd use normally and that's it. For example:
+ <tscreen><verb>
+ ddd -k /var/crash/kernel.0 /var/crash/vmcore.0
+ </verb></tscreen>
+ Then you can go about looking at code and data with visual tools.
+
Here is a script log of a <tt>kgdb</tt> session illustrating the
procedure. Long
lines have been folded to improve readability, and the lines are
>Audit-Trail:
>Unformatted:
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