Kernel Panic with preempt RT patch 2.6.29.5-rt21

Kernel Panic with preempt RT patch 2.6.29.5-rt21

[Meha Mehta]

Hi all,

I am trying to boot Linux 2.6.29.5 with PREEMPT RT patch on x86
system. I have enabled all the configuration option required for
PREEMPT_RT.
I get kernel panic with message "Attempted to kill init!". Here is
panic output.

? panic 0x48/0xd1
? do_exit + 0x5e/0x637
? do_group_exit+0x5b/0x83
? sys_exit_group+0xd/0x10
? syscall_call+0x7/0xb

I get same panic with 2.6.29.5-rt22 and 2.6.29.6-rt23.

Has anybody tried 2.6.29.5-rt21 patch? What am I missing here? Any suggestions?

Thanks,
Meha

Re: Kernel Panic with preempt RT patch 2.6.29.5-rt21

[Darren Hart]

Meha Mehta wrote:
> Hi all,
> 
> I am trying to boot Linux 2.6.29.5 with PREEMPT RT patch on x86
> system. I have enabled all the configuration option required for
> PREEMPT_RT.
> I get kernel panic with message "Attempted to kill init!". Here is
> panic output.
> 
> ? panic 0x48/0xd1
> ? do_exit + 0x5e/0x637
> ? do_group_exit+0x5b/0x83
> ? sys_exit_group+0xd/0x10
> ? syscall_call+0x7/0xb
> 
> I get same panic with 2.6.29.5-rt22 and 2.6.29.6-rt23.
> 
> Has anybody tried 2.6.29.5-rt21 patch? What am I missing here? Any suggestions?

Most likely a configuration issue or a bad initrd.  Tell us a bit about 
which OS you're building on and what the messages were before the panic. 
  First guess is you may have failed to include the module for your root 
filesystem either in the initrd or as =y in the kernel.

-- 
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

Re: Kernel Panic with preempt RT patch 2.6.29.5-rt21

[Meha Mehta]

Thanks. It was a problem with creating initrd. I was creating initrd
with couple of ohci modules excluded and I guess that was creating
problem. Thanks for your help.

Meha.

On Mon, Jul 13, 2009 at 3:54 PM, Darren Hart<dvhltc@us.ibm.com> wrote:
> Meha Mehta wrote:
>>
>> Hi all,
>>
>> I am trying to boot Linux 2.6.29.5 with PREEMPT RT patch on x86
>> system. I have enabled all the configuration option required for
>> PREEMPT_RT.
>> I get kernel panic with message "Attempted to kill init!". Here is
>> panic output.
>>
>> ? panic 0x48/0xd1
>> ? do_exit + 0x5e/0x637
>> ? do_group_exit+0x5b/0x83
>> ? sys_exit_group+0xd/0x10
>> ? syscall_call+0x7/0xb
>>
>> I get same panic with 2.6.29.5-rt22 and 2.6.29.6-rt23.
>>
>> Has anybody tried 2.6.29.5-rt21 patch? What am I missing here? Any
>> suggestions?
>
> Most likely a configuration issue or a bad initrd.  Tell us a bit about
> which OS you're building on and what the messages were before the panic.
>  First guess is you may have failed to include the module for your root
> filesystem either in the initrd or as =y in the kernel.
>
> --
> Darren Hart
> IBM Linux Technology Center
> Real-Time Linux Team
>
--
To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html