Bug 239970

Summary: kernel: BUG: at kernel/fork.c:994 copy_process()
Product: [Fedora] Fedora Reporter: Robert Scheck <redhat-bugzilla>
Component: kernel-xenAssignee: Eduardo Habkost <ehabkost>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: urgent Docs Contact:
Priority: medium    
Version: rawhideCC: rjones, xen-maint
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: 2.6.20-2925.8 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-05-15 20:30:16 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:
Bug Depends On:    
Bug Blocks: 150225    

Description Robert Scheck 2007-05-13 16:52:53 UTC 
Description of problem:
Well, the Xen kernel is broken somehow...

May 13 16:18:41 rsc kernel: BUG: at kernel/fork.c:994 copy_process()
May 13 16:18:41 rsc kernel:  [<c1005d9a>] show_trace_log_lvl+0x1a/0x2f
May 13 16:18:41 rsc kernel:  [<c1006343>] show_trace+0x12/0x14
May 13 16:18:41 rsc kernel:  [<c10063be>] dump_stack+0x16/0x18
May 13 16:18:41 rsc kernel:  [<c101d044>] copy_process+0x195/0x1245
May 13 16:18:41 rsc kernel:  [<c101e144>] do_fork+0x50/0x117
May 13 16:18:41 rsc kernel:  [<c1003351>] kernel_thread+0x8e/0x96
May 13 16:18:41 rsc kernel:  [<c102c701>] __call_usermodehelper+0x2d/0x46
May 13 16:18:41 rsc kernel:  [<c102cd4f>] run_workqueue+0x89/0x145
May 13 16:18:41 rsc kernel:  [<c102d711>] worker_thread+0xd5/0x102
May 13 16:18:41 rsc kernel:  [<c102ff27>] kthread+0xb3/0xdc
May 13 16:18:41 rsc kernel:  [<c10058db>] kernel_thread_helper+0x7/0x10
May 13 16:18:41 rsc kernel:  =======================

Version-Release number of selected component (if applicable):
kernel-xen-2.6.20-2925.5.fc7

How reproducible:
Everytime for me.

Steps to Reproduce:
1. Install the virtualization stuff using pirut
2. Change boot order
3. Boot system

Expected results:
Fixed... ;-)
Comment 1 Daniel Berrangé 2007-05-13 21:37:00 UTC 
The -2925.5.fc7  has known data corruptions bugs. Please update to latest
rawhide & retest. The current latest kernel version is kernel-xen-2.6.20-2925.8.fc7
Comment 2 Richard W.M. Jones 2007-05-14 07:42:10 UTC 
I can reproduce this with 2.6.20-2925.7.fc7 32 bit kernel (not 64 bit), so I had
assumed it was related to the 32 bit upcall problem which Stephen Tweedie fixed.
 Will test again with latest kernel.
Comment 3 Richard W.M. Jones 2007-05-14 11:43:28 UTC 
I don't see this happening on the .8. kernel.
Comment 4 Robert Scheck 2007-05-15 20:30:16 UTC 
I can't see this problem in 2.6.20-2925.8 no longer, too.