Re: Kernel panic when unpluggin AC adaptor

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On Tue, May 04, 2010 at 10:27:23PM +0200, David DEMELIER wrote:
> 2010/5/4 Kostik Belousov <[e-mail]>:
> > On Tue, May 04, 2010 at 06:35:52PM +0200, David DEMELIER wrote:
> >> Good news ! It worked, check the picture here :
> >>
> >> http://img63.imageshack.us/img63/4244/dsc00361g.jpg
> >
> > Please try adding code fragment like this:
> > =9A =9A =9A =9Aif (cx_next->p_lvlx =3D=3D NULL)
> > =9A =9A =9A =9A =9A =9A =9A =9Aprintf("Going to panic.\n");
> > to =9Adev/acpi/acpi_cpu.c:acpi_cpu_idle() function, right before
> > =9A =9ACPU_GET_REG(cx_next->p_lvlx, 1);
> > line and see if it prints the message immediately before the panic.
> >
>=20
> Yes it does at the beginning of the kernel panic.

Ok, so the point of panic is found, it is NULL cx_next->p_lvlx resource.
With the data in hand, I recommend you to ask on acpi@ (added a Cc:)
about the cause and possible solution.

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