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Re: kern/46885: NetBSD 6.0_RC1 spontaneously reboots as kernel starts to load
The following reply was made to PR kern/46885; it has been noted by GNATS.
From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
Subject: Re: kern/46885: NetBSD 6.0_RC1 spontaneously reboots as kernel
starts to load
Date: Sun, 2 Sep 2012 00:39:04 +0200
On Sat, Sep 01, 2012 at 11:13:44PM +0200, Manuel Bouyer wrote:
> I can confirm this on a DELL optiplex with a "Intel(R) Celeron(R) CPU
> > [...]
> > Compiling a kernel with options DIAGNOSTIC commented out and options DEBUG
> > uncommented and testing that works perfectly as well!
> I looked at low-level code that would have
> #if defined(DIAGNOSTIC) || defined(DEBUG)
> but didn't spot anything (the only file I found in i386 and x86 which
> have something like that is apmcall.S, which is not compiled in).
I did some experiments:
- a kernel with the files from i386/i386 and *acpi*.o compiled -DDEBUG
hangs instead of resetting
- a kernel with kern_*.o, *acpi*.o and uvm*.o compiled with -DDEBUG
(and everything else without -DDEBUG) resets just after the first line
of green message (which I think is about symbols, but it resets too fast
to really be sure)
- a kernel with everything but kern_*.o, *acpi*.o and uvm*.o compiled with
So, at first glance, it looks like DEBUG or DIAGNOSTIC doesn't make it
work because it changes code, but because it changes sizes.
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
NetBSD: 26 ans d'experience feront toujours la difference
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