Okay, lost

Okay, lost

[A. Wrasman]

Okay, I can't seem to get any of the pre-compiled linux kernels  after the 2.2.14 one on oss.sgi.com to boot on my Indy.

I get this type of error:
Exception: <vector=Normal>
Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
Cause register: 0x8034<CE=0,IP8,EXC=TRAP>
Exception PC: 0x88240004, Exception RA: 0x8816d610
Processor Trap exception at address 0xffffffff
Local I/O interrupt register 1: 0x80 <VR/GIO2>
	Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
	arg: a8740000 28 8847ff80 a
	tmp: a8740000 8480 88002000 8480 881932a0 1 fffffffc 47dfa8
	sve: a8740000 0 0 0 0 0 0 0
	t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 88002000
	gp a8740000 fp 0 sp 0 ra 0

PANIC: unexpected exception


Or something similar.

Re: Okay, lost

[Ralf Baechle]

On Mon, Jul 17, 2000 at 08:53:03PM -0500, A. Wrasman wrote:

> Okay, I can't seem to get any of the pre-compiled linux kernels  after the 2.2.14 one on oss.sgi.com to boot on my Indy.
> 
> I get this type of error:
> Exception: <vector=Normal>
> Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
> Cause register: 0x8034<CE=0,IP8,EXC=TRAP>
> Exception PC: 0x88240004, Exception RA: 0x8816d610
> Processor Trap exception at address 0xffffffff
> Local I/O interrupt register 1: 0x80 <VR/GIO2>
> 	Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
> 	arg: a8740000 28 8847ff80 a
> 	tmp: a8740000 8480 88002000 8480 881932a0 1 fffffffc 47dfa8
> 	sve: a8740000 0 0 0 0 0 0 0
> 	t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 88002000
> 	gp a8740000 fp 0 sp 0 ra 0
> 
> PANIC: unexpected exception

Now that looks like a kernel compiled by somebody who doesn't read
documentation, see http://oss.sgi.com/mips/mips-howto.html.  In short:
remove the -N linker flag from arch/mips/Makefile.

  Ralf

Re: Okay, lost

[Keith M Wesolowski]

On Mon, Jul 17, 2000 at 08:53:03PM -0500, A. Wrasman wrote:

> Okay, I can't seem to get any of the pre-compiled linux kernels  after the 2.2.14 one on oss.sgi.com to boot on my Indy.
> I get this type of error:
> Exception: <vector=Normal>

I've no idea what kernels you're using. Try
/pub/linux/mips/mips-linux/simple/kernels/vmlinux-000717-38400 if you
want to try a post-2.2 kernel. It really should work.

-- 
Keith M Wesolowski			wesolows@chem.unr.edu
University of Nevada			http://www.chem.unr.edu
Chemistry Department Systems and Network Administrator

Re: Okay, lost

[Ulf Carlsson]

 > > Okay, I can't seem to get any of the pre-compiled linux kernels  after the 2.2.14 one on oss.sgi.com to boot on my Indy.
 > > 
 > > I get this type of error:
 > > Exception: <vector=Normal>
 > > Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
 > > Cause register: 0x8034<CE=0,IP8,EXC=TRAP>
 > > Exception PC: 0x88240004, Exception RA: 0x8816d610
 > > Processor Trap exception at address 0xffffffff
 > > Local I/O interrupt register 1: 0x80 <VR/GIO2>
 > > 	Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
 > > 	arg: a8740000 28 8847ff80 a
 > > 	tmp: a8740000 8480 88002000 8480 881932a0 1 fffffffc 47dfa8
 > > 	sve: a8740000 0 0 0 0 0 0 0
 > > 	t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 88002000
 > > 	gp a8740000 fp 0 sp 0 ra 0
 > > 
 > > PANIC: unexpected exception
 > 
 > Now that looks like a kernel compiled by somebody who doesn't read
 > documentation, see http://oss.sgi.com/mips/mips-howto.html.  In short:
 > remove the -N linker flag from arch/mips/Makefile.

I had the same problem on one of my machines.  The -N linker flag was
not the solution.  Note that the kernels ran on other machines.  I
only got this for the 2.4, not 2.2.

Ulf

Re: Okay, lost

[clemej]

When I was bitten by the infamous '-N' bug, it seems to me the 
exception I got said "UTLB" in it somewhere.  This one doesn't.
So maybe that's not the problem.

And I think I might be being bitten by the same thing.  All 2.4 
kernels I've tried die with what seems to be a similar error on 
my Indigo2 (R4400 200Mhz).  I thought I read somewhere something 
about XZ graphics causing problems and boards should be 
removed... why? Could this be the cause? I have XZ in my 
machine.... I want to try a few more things before sounding too 
many alarms though...

john.c
- --
John Clemens
clemens@alum.rpi.edu


---------- Original Message ----------------------------------
From:   Ralf Baechle <ralf@oss.sgi.com>
Date:   Tue, 18 Jul 2000 05:23:09 +0200

>On Mon, Jul 17, 2000 at 08:53:03PM -0500, A. Wrasman wrote:
>
>> Okay, I can't seem to get any of the pre-compiled linux kernels  after the 2.2.14 one on oss.sgi.com to boot on my Indy.
>> 
>> I get this type of error:
>> Exception: <vector=Normal>
>> Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
>> Cause register: 0x8034<CE=0,IP8,EXC=TRAP>
>> Exception PC: 0x88240004, Exception RA: 0x8816d610
>> Processor Trap exception at address 0xffffffff
>> Local I/O interrupt register 1: 0x80 <VR/GIO2>
>> 	Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
>> 	arg: a8740000 28 8847ff80 a
>> 	tmp: a8740000 8480 88002000 8480 881932a0 1 fffffffc 47dfa8
>> 	sve: a8740000 0 0 0 0 0 0 0
>> 	t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 88002000
>> 	gp a8740000 fp 0 sp 0 ra 0
>> 
>> PANIC: unexpected exception
>
>Now that looks like a kernel compiled by somebody who doesn't read
>documentation, see http://oss.sgi.com/mips/mips-howto.html.  In short:
>remove the -N linker flag from arch/mips/Makefile.
>
>  Ralf
>

Re: Okay, lost

[clemej]

When I was bitten by the infamous '-N' bug, it seems to me the 
exception I got said "UTLB" in it somewhere.  This one doesn't.
So maybe that's not the problem.

And I think I might be being bitten by the same thing.  All 2.4 
kernels I've tried die with what seems to be a similar error on 
my Indigo2 (R4400 200Mhz).  I thought I read somewhere something 
about XZ graphics causing problems and boards should be 
removed... why? Could this be the cause? I have XZ in my 
machine.... I want to try a few more things before sounding too 
many alarms though...

john.c
- --
John Clemens
clemens@alum.rpi.edu


---------- Original Message ----------------------------------
From:   Ralf Baechle <ralf@oss.sgi.com>
Date:   Tue, 18 Jul 2000 05:23:09 +0200

>On Mon, Jul 17, 2000 at 08:53:03PM -0500, A. Wrasman wrote:
>
>> Okay, I can't seem to get any of the pre-compiled linux kernels  after the 2.2.14 one on oss.sgi.com to boot on my Indy.
>> 
>> I get this type of error:
>> Exception: <vector=Normal>
>> Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
>> Cause register: 0x8034<CE=0,IP8,EXC=TRAP>
>> Exception PC: 0x88240004, Exception RA: 0x8816d610
>> Processor Trap exception at address 0xffffffff
>> Local I/O interrupt register 1: 0x80 <VR/GIO2>
>> 	Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
>> 	arg: a8740000 28 8847ff80 a
>> 	tmp: a8740000 8480 88002000 8480 881932a0 1 fffffffc 47dfa8
>> 	sve: a8740000 0 0 0 0 0 0 0
>> 	t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 88002000
>> 	gp a8740000 fp 0 sp 0 ra 0
>> 
>> PANIC: unexpected exception
>
>Now that looks like a kernel compiled by somebody who doesn't read
>documentation, see http://oss.sgi.com/mips/mips-howto.html.  In short:
>remove the -N linker flag from arch/mips/Makefile.
>
>  Ralf
>

Re: Okay, lost

[Ralf Baechle]

On Tue, Jul 18, 2000 at 11:23:22PM -0400, clemej wrote:

> When I was bitten by the infamous '-N' bug, it seems to me the 
> exception I got said "UTLB" in it somewhere.  This one doesn't.
> So maybe that's not the problem.
> 
> And I think I might be being bitten by the same thing.  All 2.4 
> kernels I've tried die with what seems to be a similar error on 
> my Indigo2 (R4400 200Mhz).  I thought I read somewhere something 
> about XZ graphics causing problems and boards should be 
> removed... why? Could this be the cause? I have XZ in my 
> machine.... I want to try a few more things before sounding too 
> many alarms though...

The XZ graphics isn't supported nor do we properly detect and avoid it
which is why the kernel blows up on XZ.  Now, Ulf had the same problem
and as he knows about this issue I guess there is a real problem
hidden behind that ...

  Ralf

Re: Okay, lost

[A. Wrasman]

On Sun, Jul 23, 2000 at 03:03:24AM +0200, Ralf Baechle wrote:
> On Sat, Jul 22, 2000 at 12:35:49PM -0500, A. Wrasman wrote:
> 
> > Well removed the 2 extra cards from the box. Still no go.
> 
> Thanks.
> 
> I suspect that there is some magic configuration which crashes.  Since
> hardware doesn't make the difference it might also be the PROM version.
> Basically I believe that under certain circumstances the kernel overwrites
> PROM data structures or vice versa or there is (yet another ...) ARC
> firmware bug which results in a crash.

I've got version 5.3 of the prom for IP22. Of course SGI is doing some update of the support section of their site this weekend
so I can't even poke around to see what updates have come out, since I have't patched IRIX 6.2 in over 2 years on this box.

How can I go about troubleshooting the kernel at this point? The odd thing is a 2.2.14 (and an older 2.2.1) kernel all work fine.

Since most of the work is now being done on the 2.4 kernel it would be nice to get nearer to what the development is being done on.

> 
>   Ralf