From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sun, 02 Apr 2006 23:07:11 +0200
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai-help] Kernel Panic at boot 2.6.15
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org, "Brian L." <bluczkie@domain.hid>

Gilles Chanteperdrix wrote:
> Brian L. wrote:
>  > I just patched 2.6.15 using the prepare-kernel script and adeos patch
>  > included in xenomai 2.1.0. I configured the kernel in a sensible way
>  > for the hardware, but didn't touch anything in the real-time section.
>  > 
>  > When I boot the kernel, I get a kernel panic. Here's some important
>  > bits (everything above this is cut off and obviously, unscrollable):
>  > 
>  > Pricess swapper (pid: 1, threadinfo=c12900000, task=c1283a30)
>  > Stack: ...
>  > Call Trace:
>  > [<c025f5f0>] rthalbroadcast_to_local_timers+0x0/0x30
>  > [<c0143cf8>] xnpod_get_time+0x8/0x20
>  > [<c0143c84>] xnpod_set_time+0x44/0xb0
>  > [<c0144275>] xnpod_start_timer+0x1a5/0x260
>  > [<c01443d0>] xnpod_announce_tick+0x0/0x100
>  > [<c01443d0>] xnpod_announce_tick+0x0/0x100
>  > [<c0140d3a>] xnpod_init+0x46a/0x510
>  > [<c01443d0>] xnpod_announce_tick+0x0/0x100
>  > [<c0118500>] __ipipe_flush_printk+0x80/0xa0
>  > [<c0148bea>] xncore_attach+0x4a/0x60
>  > [<c014bc9c>] __native_skin_init+0xc/0xf0
>  > [<c036e8ec>] do_initcalls+0x2c/0xd0
>  > [<c01002d0>] init+0x0/0x170
>  > [<c010030c>] init+0x3c/0x170
>  > [<c01010e9>] kernel_thread_helper+0x5/0xc
>  > Code: ...
>  > <0>Kernel panic - not syncing: Attempted to kill init!
> 
> This really looks like :
> https://mail.gna.org/public/xenomai-help/2006-03/msg00112.html
> 

Indeed, comparing to the traces I have received on the other issue, this 
must be the same problem.

> Which was fixed by revision 786 in trunk and 787 in v2.1.x branch.
> 
> The real issue is that you enabled support for APIC in kernel
> configuration, and your CPU either has no APIC, or it is disabled by
> Linux because disabled by BIOS.
> 
> Try adding "lapic" as a kernel parameter, and if it still does not work,
> disable support for APIC in the kernel configuration and rebuild your
> kernel.
> 


-- 

Philippe.