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Re: kern/46885: NetBSD 6.0_RC1 spontaneously reboots as kernel starts to load
On Fri, Aug 31, 2012 at 09:05:01PM +0000,
> Problem occurs on a particular desktop system using a standard
> Intel D865GLC/D865PE50 motherboard, Pentium 4 2.6Ghz processor. System has
> been stable for many years and ran NetBSD 5 and was upgraded to NetBSD 6
> when it was tagged. Regularly updated from source and worked fine with
> GENERIC kernel.
> After cvs'ing up to RC1 and building a new GENERIC kernel this would cause
> the system to reboot just after the kernel loading message, but before the
> version announcement.
> Investigation showed that a GENERIC kernel with options DIAGNOSTIC would boot
> successfully and the problem never showed up before as all NetBSD 6 beta/beta2
> GENERIC kernels had options DIAGNOSTIC on by default and it was only removed
> for RC1.
I can confirm this on a DELL optiplex with a "Intel(R) Celeron(R) CPU 2.80GHz".
> 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).
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
NetBSD: 26 ans d'experience feront toujours la difference
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