Re: Panic "Fatal trap 18: integer divide fault while in kernel mode"

From: David Wolfskill <david_at_catwhisker.org>
Date: Thu, 30 Apr 2009 08:18:30 -0700
On Wed, Apr 29, 2009 at 09:16:26AM -0700, David Wolfskill wrote:
> My build machine had no trouble building & booting r191662, but my
> laptop's boot came to a screeching halt rather quickly.  Here's
> cut/paste for serial console of the single-user mode boot sequence:
> ...
> Fatal trap 18: integer divide fault while in kernel mode
> cpuid = 0; apic id = 00
> instruction pointer     = 0x20:0xc0b34433
> stack pointer           = 0x28:0xc1420d00
> frame pointer           = 0x28:0xc1420d20
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 0 (swapper)
> [thread pid 0 tid 100000 ]
> Stopped at      cpu_topo+0x43:  idivl   %ecx,%eax
> db> 
> 
> 
> [Note: I've been in the habit of tracking head/CURRENT on a daily basis,
> and had no problems building today's while running yesterday's, which
> was r1916?? -- sorry; looks as if I'll need to boot from a different
> kernel to get that info.  (I've already powered off my build machine,
> and it's at home, while I'm at work.)]

OK; that earlier revision (from Tuesday, which worked) was r191620.

I just built & tried to boot r191682; same symptoms.

I've attached a copy of dmesg.boot from the failing machine when it's
running r191620.

> Is there anything of use I might get from DDB?

I can still poke around there for a bit, if that would be useful.

Peace,
david
-- 
David H. Wolfskill				david_at_catwhisker.org
Depriving a girl or boy of an opportunity for education is evil.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.

Received on Thu Apr 30 2009 - 13:18:31 UTC

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