Bug 435958

Summary: F9 - general protection fault: 0000 [1] SMP DEBUG_PAGEALLOC
Product: [Fedora] Fedora Reporter: Gerald Cox <gbcox>
Component: kernelAssignee: John W. Linville <linville>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: kernel-maint, mb
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 2.6.25-0.90.rc3.git5.fc9 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-03-06 13:22:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
dmesg log
none
Error Message Log none

Description Gerald Cox 2008-03-04 17:18:16 UTC 
Description of problem:

applied kernel-2.6.25-0.87.rc3.git4.fc9.x86_64

now receiving
kernel:  general protection fault:  0000 [1] SMP DEBUG_PAGEALLOC

then system eventually locks...backed out to kernel-2.6.25-0.82.rc3.git2.fc9.x86_64


Version-Release number of selected component (if applicable):
kernel-2.6.25-0.87.rc3.git4.fc9.x86_64


How reproducible:
Boot kernel-2.6.25-0.87.rc3.git4.fc9.x86_64


Steps to Reproduce:
1. Boot kernel-2.6.25-0.87.rc3.git4.fc9.x86_64
2. Wait for message
3. System eventually locks up
  
Actual results:

Receive error message
System eventually locks

Expected results:
Normal operation

Additional info:
dmesg and error message attached.
Comment 1 Gerald Cox 2008-03-04 17:20:26 UTC 
Created attachment 296765 [details]
dmesg log
Comment 2 Gerald Cox 2008-03-04 17:21:01 UTC 
Created attachment 296766 [details]
Error Message Log
Comment 3 Dave Jones 2008-03-04 18:11:51 UTC 
john, this looks like b43 is corrupting memory to me.  a use after free perhaps?
Comment 4 John W. Linville 2008-03-04 18:49:54 UTC 
Michael, for reference this kernel corresponds to the top of the 
current "pending" branch in wireless-testing, as well as all the current fixes 
sent to 2.6.25.  Have you seen anything similar reported?
Comment 5 John W. Linville 2008-03-04 18:53:57 UTC 
Gerald, what was the last working kernel for you?
Comment 6 Michael Buesch 2008-03-04 19:00:10 UTC 
Didn't see that before, but to me it looks more like a mac80211 bug or memory
corruption.
Comment 7 Gerald Cox 2008-03-04 19:10:23 UTC 
I backed out to:
kernel-2.6.25-0.82.rc3.git2.fc9.x86_64

and it is working fine with no error message or lockup so far.  I also didn't
have the problem with any of the other F9 Alpha kernels.

I receive the error message with the git4 kernel about 1 or two minutes after
boot.  Lockup then varies depending on what I am doing.  I have to poweroff to
reboot.
Comment 8 Michael Buesch 2008-03-04 19:16:19 UTC 
see #435962
Comment 9 John W. Linville 2008-03-05 18:05:52 UTC 
Gerald, please try kernel-2.6.25-0.90.rc3.git5.fc9.  It has a patch that cured 
a similar problem in yesterday's F8 kernels.

   http://koji.fedoraproject.org/koji/buildinfo?buildID=41348

Does that resolve things for you?
Comment 10 Gerald Cox 2008-03-05 21:50:45 UTC 
John,

kernel-2.6.25-0.90.rc3.git5.fc9 appears to have resolved the problem.  The only
thing I noticed was I needed to re-enter my WPA key after the first boot.  After
that, the settings were saved.  Thank you.