Re: Current CVS Kernel Broken on MIPS (010111 - 2.4.0)

Re: Current CVS Kernel Broken on MIPS (010111 - 2.4.0)

[Ralf Baechle]

On Thu, Jan 11, 2001 at 10:42:05PM +0000, Ian Chilton wrote:

> I used the same GCC 2.95.2 + Binutils 2.10.1 that worked when compiling
> 001027.
> 
> This output was from an I2
> 
> Command Monitor.  Type "exit" to return to the menu.
> >> bootp():vmlinux console=ttyS0
> Setting $netaddr to 192.168.1.2 (from server scotty)
> Obtaining vmlinux from server scotty
>   \
> Exception: <vector=Normal>
> Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
> Cause register: 0x3000c01c<CE=3,IP8,IP7,EXC=DBE>
> Exception PC: 0x88141554, Exception RA: 0x881821d4
> Data Bus error GIO Timeout Interrupt
> Local I/O interrupt register 1: 0x80 <VR/GIO2>
> Local I/O interrupt register 2: 0xca <EISA,SLOT0,SLOT1>
> GIO parity error register: 0x400<TIME>
> GIO bus error: address: 0x1000000
>   Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
>   arg: a8740000 0 81009400 1000
>   tmp: a8740000 100a 81000000 881abe50 100a 1 9400 20
>   sve: a8740000 0 0 0 0 0 0 0
>   t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 81000000
>   gp a8740000 fp 0 sp 0 ra 0

Such a pile of numbers is pretty useless for debuggin unless accompanied
with the disassembler listing of the crashing code, System.map or even
better the kernel binary itself ...

  Ralf

Current CVS Kernel Broken on MIPS (010111 - 2.4.0)

[Ian Chilton]

Hello,

Klaus tried booting the kernel I compiled using current CVS (010111)

I used the same GCC 2.95.2 + Binutils 2.10.1 that worked when compiling
001027.

This output was from an I2

Command Monitor.  Type "exit" to return to the menu.
>> bootp():vmlinux console=ttyS0
Setting $netaddr to 192.168.1.2 (from server scotty)
Obtaining vmlinux from server scotty
  \
Exception: <vector=Normal>
Status register: 0x10044803<CU0,CH,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
Cause register: 0x3000c01c<CE=3,IP8,IP7,EXC=DBE>
Exception PC: 0x88141554, Exception RA: 0x881821d4
Data Bus error GIO Timeout Interrupt
Local I/O interrupt register 1: 0x80 <VR/GIO2>
Local I/O interrupt register 2: 0xca <EISA,SLOT0,SLOT1>
GIO parity error register: 0x400<TIME>
GIO bus error: address: 0x1000000
  Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
  arg: a8740000 0 81009400 1000
  tmp: a8740000 100a 81000000 881abe50 100a 1 9400 20
  sve: a8740000 0 0 0 0 0 0 0
  t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 81000000
  gp a8740000 fp 0 sp 0 ra 0

PANIC: Unexpected exception

[Press reset or ENTER to restart.]


Bye for Now,

Ian


                                \|||/ 
                                (o o)
 /---------------------------ooO-(_)-Ooo---------------------------\
 |  Ian Chilton        (IRC Nick - GadgetMan)     ICQ #: 16007717  |
 |-----------------------------------------------------------------|
 |  E-Mail: ian@ichilton.co.uk     Web: http://www.ichilton.co.uk  |
 |-----------------------------------------------------------------|
 |         Budget: A method for going broke methodically.          |
 \-----------------------------------------------------------------/

Re: Current CVS Kernel Broken on MIPS (010111 - 2.4.0)

[Ian Chilton]

Hello,

> Such a pile of numbers is pretty useless for debuggin unless accompanied
> with the disassembler listing of the crashing code, System.map or even
> better the kernel binary itself ...

Sorry, I forgot..:

http://files.ichilton.co.uk/linux-010111-IP22-4400.tar.gz


It's all in there, ELF + ECOFF + System.map


Thanks!


Bye for Now,

Ian


                                \|||/ 
                                (o o)
 /---------------------------ooO-(_)-Ooo---------------------------\
 |  Ian Chilton        (IRC Nick - GadgetMan)     ICQ #: 16007717  |
 |-----------------------------------------------------------------|
 |  E-Mail: ian@ichilton.co.uk     Web: http://www.ichilton.co.uk  |
 |-----------------------------------------------------------------|
 |         Budget: A method for going broke methodically.          |
 \-----------------------------------------------------------------/

Re: Current CVS Kernel Broken on MIPS (010111 - 2.4.0)

[Ralf Baechle]

On Thu, Jan 11, 2001 at 10:57:01PM +0000, Ian Chilton wrote:

> > Such a pile of numbers is pretty useless for debuggin unless accompanied
> > with the disassembler listing of the crashing code, System.map or even
> > better the kernel binary itself ...
> 
> Sorry, I forgot..:
> 
> http://files.ichilton.co.uk/linux-010111-IP22-4400.tar.gz
> 
> 
> It's all in there, ELF + ECOFF + System.map

It's a crash during the very early initialization of the kernel, that is
before trap_init() gets called.  __alloc_bootmem_core calls memset with
bogus addresses and that again crashes.  Not very much else I can read
from this crash and not very much I can do without an Indy ...

  Ralf