Bug 11346

Summary:	kernel BUG at arch/x86/mm/pat.c:233!
Product:	ACPI	Reporter:	Jean Delvare (jdelvare)
Component:	Power-Processor	Assignee:	acpi_power-processor
Status:	CLOSED CODE_FIX
Severity:	high	CC:	acpi-bugzilla, andi-bz, bunk, mingo, rjw, Robert.Moore
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.27-rc3-git2	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	11167
Attachments:	Stack trace Kernel configuration acpidump output dmesg output for kernel 2.6.26.1 ioremap debug patch dmesg output with debug patch dmesg output for kernel 2.6.27-rc3-git2 with debug patch Pass 64bit address to reserve_memtype

Description Jean Delvare 2008-08-15 02:10:46 UTC

Latest working kernel version: 2.6.26.1
Earliest failing kernel version: 2.6.27-rc3
Distribution: Slackware 11.0
Hardware Environment: Intel D865GSA
Software Environment:
Problem Description: Boot either fails, or succeeds but then ethernet network doesn't work. Stack trace in the kernel log, will be added as an attachement.

Steps to reproduce:
Boot Linux kernel 2.6.27-rc3 or 2.6.27-rc3-git2 on an Intel D865GSA motherboard.

Comment 1 Jean Delvare 2008-08-15 02:14:08 UTC

Created attachment 17261 [details]
Stack trace

With CONFIG_FRAME_POINTER=y.

Comment 2 Jean Delvare 2008-08-15 02:14:57 UTC

Created attachment 17262 [details]
Kernel configuration

Comment 3 Jean Delvare 2008-08-15 02:23:16 UTC

Created attachment 17263 [details]
acpidump output

Comment 4 Jean Delvare 2008-08-15 02:31:54 UTC

Created attachment 17264 [details]
dmesg output for kernel 2.6.26.1

Comment 5 Andi Kleen 2008-08-15 07:22:07 UTC

Created attachment 17266 [details]
ioremap debug patch

Can you add the dmesg output with this patch applied please?

Comment 6 Jean Delvare 2008-08-15 07:37:04 UTC

Created attachment 17268 [details]
dmesg output with debug patch

With debug patch from comment #5.

Comment 7 Andi Kleen 2008-08-15 07:45:50 UTC

What happened to the WARN_ON? Or does it not happen every boot?

I would like have wanted to see the WARN_ON in the log with the debug patch.

Comment 8 Andi Kleen 2008-08-15 07:47:19 UTC

s/WARN_ON/BUG/

Comment 9 Jean Delvare 2008-08-15 07:49:39 UTC

Oh, sorry. I patched kernel 2.6.26.1, not 2.6.27-rc3. I'll do it now, stay tuned.

Comment 10 Jean Delvare 2008-08-15 08:19:43 UTC

Created attachment 17269 [details]
dmesg output for kernel 2.6.27-rc3-git2 with debug patch

Comment 11 Andi Kleen 2008-08-15 09:20:31 UTC

Created attachment 17270 [details]
Pass 64bit address to reserve_memtype

Please test this patch.

Comment 12 Jean Delvare 2008-08-15 10:16:13 UTC

Yes, this patch solves the problem. My system boots again and things appear to work fine. Thanks Andi!

Comment 13 Rafael J. Wysocki 2008-08-15 10:38:48 UTC

Handled-By : Andi Kleen <andi@firstfloor.org>
Patch : http://bugzilla.kernel.org/attachment.cgi?id=17270&action=view

Comment 14 Ingo Molnar 2008-08-17 05:47:48 UTC

Upstream commit is e213e87785.