linux-kernel - Re: [BUG] can't boot up: unable to handle kernel paging request at ffffffffff340003

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Date:	Tue, 11 Feb 2014 14:18:46 +0000
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Madper Xie <cxie@...hat.com>
Cc:	Matt Fleming <matt.fleming@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Josh Triplett <josh@...htriplett.org>
Subject: Re: [BUG] can't boot up: unable to handle kernel paging request at
 ffffffffff340003

(Entering the realm of ACPI, pulling in more folks)

On Tue, 11 Feb, at 09:47:57PM, Madper Xie wrote:
> Thanks for your reply. I attached the all the dmesg outputs for you.
> [    0.000000] ACPI: BGRT 00000000d9bb5100 00003C (v00 HPQOEM SLIC-BPC 01072009 AMI  00010013)
 
Your BGRT table has an extra 4 bytes for some reason, (0x3C should be
0x38) and doesn't match the defintion in include/acpi/actbl3.h,


struct acpi_table_bgrt {
	struct acpi_table_header header;	/* Common ACPI table header */
	u16 version;
	u8 status;
	u8 image_type;
	u64 image_address;
	u32 image_offset_x;
	u32 image_offset_y;
};


which explains why when we dereference ->image_address we don't get a
sensible value.

Guys, what do you make of this? Firmware bug? Full thread here,

  http://article.gmane.org/gmane.linux.kernel.efi/3499

-- 
Matt Fleming, Intel Open Source Technology Center
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