kernel trap 12 with interrupts disabled on a fresh SMP -CURRENT

Morten Rodal morten at
Wed Jan 21 01:20:32 PST 2004

On Tue, Jan 20, 2004 at 01:25:11PM -0500, John Baldwin wrote:
> On Saturday 17 January 2004 03:18 pm, Morten Rodal wrote:
> > After getting home from a vacation I upgraded my -CURRENT computer
> > from a Nov 20th kernel to todays kernel.  After the new interrupt code
> > was commited I had to turn off ACPI support because of some vital
> > pieces are missing in the ACPI implementation in my BIOS (if I
> > recall correctly it was missing MADT table).
> >
> > The attached crash is when I boot the kernel WITHOUT ACPI.  This was
> > captured with the serial debugger which generated a series of panics
> > (I aborted the output after a few of them since they were all exactly
> > like).
> >
> > If I boot it with ACPI I get a interrupt storm to irq20 (which
> > coincidently is ACPI):
> Try using with ACPI.  It 
> should fix the IRQ 20 interrupt storm.  I don't really have a good idea of 
> why you are getting a panic in install_ap_tramp() though.

I am starting to suspect hardware failure (probably memory).  If I
load the nvidia kernel driver (which I hadn't loaded when I got the
panic) everything works fine.

I will take a look at your patch, and hopefully try it out later

Morten Rodal

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