Kernel Bug Tracker – Bug 15749
bisected 2.6.34-rc3+git EC regression - can't boot after fix from bug #14667
Last modified: 2010-05-24 21:42:06 UTC
Today I decided to try the latest revision from Linus' tree (0eddb519b9127c73d53db4bf3ec1d45b13f844d1), to test the latest nouveau patches, but I got stuck while booting the kernel.
You can check the acpi call trace at the attached photo.
After doing bisect I ended up at patch dadf28a10c3eb29421837a2e413ab869ebd9e168, created to fix the bug #14667.
My machine is a MacBook Pro 5,1.
After reverting this patch I was able to boot and test the latest kernel available from Linus' tree.
Please let me know if you need further information to be able to debug this bug.
Created attachment 25937 [details]
Kernel Call Trace
Created attachment 25938 [details]
Working dmesg, after reverting the patch.
Created attachment 25939 [details]
First-Bad-Commit : dadf28a10c3eb29421837a2e413ab869ebd9e168
Please go back to the original kernel (ie. with the commit applied) and revert
only the changes in that commit affecting drivers/acpi/ec.c . Please report
back whether or not that helps.
Created attachment 25944 [details]
Read all bits
Please check if this patch helps.
Just tried the patch from comment #5 and still didn't work.
However, I was able to boot fine after removing just the changes from dadf28a10c3eb29421837a2e413ab869ebd9e168 to file drivers/acpi/acpica/exprep.c.
Created attachment 25962 [details]
Limit burst to 64 bit
Please check if this patch works.
*** Bug 15759 has been marked as a duplicate of this bug. ***
(In reply to comment #7)
> Created an attachment (id=25962) [details]
> Limit burst to 64 bit
> Please check if this patch works.
This patch fix the problem.
Just tested and was able to boot without any problem.
Thanks for the fix.
*** Bug 15773 has been marked as a duplicate of this bug. ***
My FSC Amilo fails to boot 2.6.34-rc4 with a repeatable oops that looks pretty much identical to the one shown here. Alexey's "Limit burst to 64 bit" patch solves the problem on that machine.
patch in comment #7 is applied to acpi tree
Author: Alexey Starikovskiy <firstname.lastname@example.org>
Date: Fri Apr 16 15:36:40 2010 -0400
ACPI: EC: Limit burst to 64 bits
shipped in linux-2.6.34-rc4-git5
*** Bug 15767 has been marked as a duplicate of this bug. ***