Re: Fatal trap 9 on -BETA1 on boot "with ACPI disabled" or "Safe Mode":

On Tuesday 07 July 2009 7:50:40 am Gavin Atkinson wrote:
> On Tue, 2009-07-07 at 02:54 -0300, Gonzalo Nemmi wrote:
> > Can reproduce it on -CURRENT-200906 and -BETA1 whenever I try to
> > boot "with ACPI disabled" or "Safe Mode":
> >
> > Fatal trap 9: general protection fault while in kernel mode
> > cpuid = 0; acpic id = 00
> > instruction pointer        = 0x70:0xbfe4
> > stack pointer            = 0x28:0xfa4
> > frame pointer            = 0x28:0xfd4
> > code segment            = base 0xc00f0000, limit 0xffff, type 0x1b
> >                 = DPL 0, pres 1, def32 0, gran 0
> > processor eflags        = interrupt enabled, resume, IOPL = 0
> > current process            = 0 (swapper)
> > [thread pid 0 tid 100000 ]
> > Stopped at      0xbfe4: *** error reading from address bfe4 ***
> > db> bt
> > Tracing pid 0 tid 100000 td 0x0da9b50
> > uart_z8530_class(780001,0,b0202,ffe,0,...) at 0xbfe4
> > db>
>
> This may well be a known problem that has affected certain Intel
> motherboards since around 5.x.  Although this problem may well be
> solvable, perhaps the better approach is to fix whatever is stopping
> you from booting with ACPI enabled?

Hello Gavin :)

Actually I can boot with ACPI enabled (default boot), what I can't boot 
is "with ACPI disabled" or in "Safe Mode" since both of them throw a 
Fatal trap 9.

> If for some reason you cannot have ACPI enabled, I guess knowing more
> output than the above would be useful.  For example, when booting
> verbose and with ACPI disabled, what lines are printed before the
> above?
>
> (to do this, break to the loader prompt, and:
>
> setenv hint.acpi.0.disabled=1
> setenv hint.apic.0.disabled=1
> boot -v

setenv  hint.acpi.0.disabled=1 and setenv hint.apic.0.disabled=1 yielded 
a stack overflow each one, so I tried booting to the loader (#6) and 
then:

OK set hint.acpi.0.disabled=1
OK set hint.apic.0.disabled=1
OK boot -v

That resulted in the very same Fatal trap 9 described above :s

The lines before I get the Fatal trap are:

pnp_identify: Trying Read_Port at 283
pnp_identify: Trying Read_Port at 2c3
pnp_identify: Trying Read_Port at 303
pnp_identify: Trying Read_Port at 343
pnp_identify: Trying Read_Port at 383
pnp_identify: Trying Read_Port at 3c3
PNP Identify complete
ex_isa_identify()
pnpbios: 13 devices, largest 146 bytes
PNP0a3: adding io range 0xcf8-0xcff, size=0x8, align=0x2
pnpbios: handle 0 device ID PNP0a03 (030ad041)

Fatal trap 9: general protection fault while in kernel mode ...

> it's also worth trying just with the first one to just disable ACPI,
> then just trying the APIC option, to see which of those two are
> causing you problems)
>
> By the way, is this i386 or amd64?

CPU: Intel(R) Celeron(R) CPU          560  _at_ 2.13GHz (2128.02-MHz 
686-class CPU)

You'll fin my boot -v in here should you like to take a look at it: 
http://pastebin.com/f604c1399

> Gavin

Thanks for your concern :)
-- 
Blessings
Gonzalo Nemmi