From owner-freebsd-hackers  Sun May 26  9:55: 8 2002
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Date: Sun, 26 May 2002 17:55:02 +0100
From: Ceri Davies <setantae@submonkey.net>
To: Dominic Marks <dominic_marks@btinternet.com>
Cc: hackers@FreeBSD.org
Subject: Re: Another panic in -STABLE, yesterday's tree
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Mail-Followup-To: Ceri Davies <setantae@submonkey.net>,
	Dominic Marks <dominic_marks@btinternet.com>, hackers@FreeBSD.org
References: <20020526112641.GA396@submonkey.net> <20020526134812.A64544@host217-39-131-156.in-addr.btop> <20020526153024.GD2271@submonkey.net> <20020526170005.A66005@host217-39-131-156.in-addr.btop>
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On Sun, May 26, 2002 at 05:00:05PM +0100, Dominic Marks wrote:
> On Sun, May 26, 2002 at 04:30:24PM +0100, Ceri Davies wrote:
> > On Sun, May 26, 2002 at 01:48:12PM +0100, Dominic Marks wrote:

> > > I had this problem. To get good backtraces I do the following. I don't
> > > know how "good" this method is, but it works for me.
> > > 
> > > After making your system with makeoptions="-g", add the following to
> > > /etc/rc.conf:
> > > 
> > > savecore_flags="-N /usr/obj/usr/src/sys/GALLIUM/kernel.debug"
> > > 
> > > Using the correct path for your kernel name. Then, in your crash dump
> > > directory (mine is /usr/crash) run gdb -k kernel.N vmcore.N and you
> > > should be able to get a good backtrace with symbols.
> > 
> > That backtrace is from a debug kernel though?
> > In my kernel config I have :
> > makeoptions     DEBUG=-g                #Build kernel with gdb(1) debug symbols
> > 
> > and after running "make installkernel" I just
> > cp /usr/obj/usr/src/sys/RHADAMANTH/kernel.debug /var/crash
> > 
> > Is that really not good enough (if not, I'll do it like you've suggested, but
> > I don't always keep /usr/obj around) ?
> 
> Well, I should have been more clear. You don't need to keep it in
> /usr/obj. The following should work just as well.
> 
> # cp /usr/obj/..BLAH../kernel.debug /var/debugkernels/
> 
> Then modify the savecore flags appropriately. Trying to get it to work
> after this point always failed for me. YMMV.

OK, I'm with you - I'll set that up now and wait for the next panic.

Thanks again,

Ceri

-- 
get the cool shoe shine

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