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Date:      Fri, 17 Dec 1999 14:50:12 -0500
From:      scott <scott@chronis.pobox.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: system freeze: how to debug?
Message-ID:  <19991217145012.A19799@chronis.pobox.com>
In-Reply-To: <Pine.NEB.3.96.991216230745.11417A-100000@shell-1.enteract.com>
References:  <19991216235723.A9224@chronis.pobox.com> <Pine.NEB.3.96.991216230745.11417A-100000@shell-1.enteract.com>

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db> trace
Debugger(e01e9787) at Debugger+0x37
panic (c01f8b56, cb2cff58, c019ddf5, 1c0f000, 7a0f000) at panic+0x74
pmap_copy_page (1c0f000, 7a0f000, cb2af620) at pmap_copy_page+0x21
vm_fault (cb2c0e80, 28141000, 3, 8, cb2af620) at vm_fault+0x721
trap_pfault (cb2cffbc, 1, 281416f0) at trap_pfault+0xaa
trap (8120027, bfbf0027, 0, 8129000, bfbfd5ec) at trap+0x1aa
calltrap() at calltrap+0x1c
--- trap 0xc, eip=0x80662ac esp=0xbfbfd5e0 ebp=0xbfbfd5ec ---

Any ideas what that means?

scott

On Thu, Dec 16, 1999 at 11:15:27PM -0600, David Scheidt wrote:
> On Thu, 16 Dec 1999, scott wrote:
> 
> > I have a 3.3 release system that keeps freezing when stressed. It is
> > running postfix, and that's all.  When it freezes, there is no kernel
> > dump, no console message, no log messages.  It simply will not respond
> > to anything, console or otherwise, except to recycle the power.
> > 
> > How do I get this system to be more informative about what is causing
> > this problem?
> 
> Put 
> options		DDB
> in your kernel config, config -g your kernel, make and install it, and wait
> for it to hang.  When it does, use CTRL-ALT-ESC to break into the debugger.
> Type trace <return>, copy down the output, then do panic <return> continue
> <return>. 
> 
> Save the crashdump, and post the stack trace.  There are instructions on
> this in section 22 of the handbook <
> http://www.freebsd.org/handbook/kerneldebug.html > or your local copy.  You
> probably should read that first.
> 
> Regards,
> 
> David Scheidt
> 


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