On Tuesday 12 October 2010 13:15:26 Andriy Gapon wrote:
> on 12/10/2010 13:09 Hans Petter Selasky said the following:
> > Hi,
> >
> > My MacBookPro 5,1 does not boot using -current because memory inside the
> > ACPI kernel module is used after free.
> >
> > The following patch temporily mitigates the problem:
> >
> > /usr/src/sys/dev/acpica/Osd/OsdMemory.c
> >
> > void
> > AcpiOsFree(void *Memory)
> > {
> > + if (cold == 0)
> >
> > free(Memory, M_ACPICA);
> >
> > }
> >
> > Is there any way to debug this from user-land?
>
> I think that the best way is to get a backtrace at least or better a
> crashdump.
The crashdump is not helpful. It crashes at init time, while the actual free
happens very early during boot.
--HPS
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