Fatal trap 12 with ACPI enabled

[Ceri Davies]

On Tue, Jul 27, 2004 at 10:22:45PM +0100, Ceri Davies wrote:
> On Tue, Jul 27, 2004 at 09:17:23PM +0100, Ceri Davies wrote:
> >   
> >   Fatal trap 12: page fault while in kernel mode
> >   cpuid = 0; apic id = 00
> >   fault virtual address   = 0x3c
> >   fault code              = supervisor read, page not present
> >   instruction pointer     = 0x8:0xc04b5dea
> >   stack pointer           = 0x10:0xc0c21c84
> >   frame pointer           = 0x10:0xc0c21cdc
> >   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 0]
> >   Stopped at      ata_generic_transaction+0x6a6:  testb   $0x1,0x3c(%eax)
> >   db> tr
> >   ata_generic_transaction(c159e708) at ata_generic_transaction+0x6a6
> >   ata_start(c14f1200,c14f1320,0,c07e1e01,57) at ata_start+0x17b
> >   ata_queue_request(c159e708,c,0,c,8) at ata_queue_request+0x185
> >   ata_controlcmd(c14f12a8,8,0,0,0,0) at ata_controlcmd+0x80
> >   ata_identify_devices(c14f1200) at ata_identify_devices+0x150
> >   ata_boot_attach(0) at ata_boot_attach+0x27
> >   run_interrupt_driven_config_hooks(0,c1ec00,c1e000,0,c0441325) at
> >   run_interrupt_driven_config_hooks+0x18
> >   mi_startup() at mi_startup+0x96
> >   begin() at begin+0x2c
> >   db>
> 
> Setting hint.apm.0.disabled = 0 fixes this.

Actually, it just hides it by making acpi step aside.  I'd much rather
use ACPI - any suggestions on the next step to troubleshoot this?

Ceri
-- 
It is not tinfoil, it is my new skin.  I am a robot.
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