From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
Subject: Re: ohci1394_dma=early crash since 2.6.32 (was Re: [Bug	
	 #14487] PANIC: early exception 08 rip 246:10 error	
	 ffffffff810251b5 cr2 0)
Date: Thu, 04 Feb 2010 09:11:24 +0000
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To: "Justin P. Mattock" <justinmattock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>, Dan Carpenter <error27-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, bernhard.kaindl-hi6Y0CQ0nG0@public.gmane.org, Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>, linux1394-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Stefan Richter <stefanr-MtYdepGKPcBMYopoZt5u/LNAH6kLmebB@public.gmane.org>, Rafael Wysocki <rjw-KKrjLPT3xs0@public.gmane.org>, Kernel Testers List <kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, ebiderman-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org, hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org

>>> "Justin P. Mattock" <justinmattock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 04.02.10 10:04 >>>
>a quick google on this showed somewhere
>at bootmem.c any ideas on this or where
>this might be caused besides fixmap?
>(or is fixmap the main location?);

__native_set_fixmap() -> set_pte_vaddr() -> set_pte_vaddr_pud() ->
fill_pte() -> spp_getpage() -> alloc_bootmem_pages() -> panic().

Jan