Bug 157426

Summary: Kernel panic at shutdown or when disconnecting ieee1394 disk
Product: [Fedora] Fedora Reporter: Per Steinar Iversen <persteinar.iversen>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED DUPLICATE QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 3CC: pfrields, wtogami
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Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2005-05-17 06:37:58 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Per Steinar Iversen 2005-05-11 15:29:48 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.7) Gecko/20050418 Fedora/1.7.7-2

Description of problem:
Sometimes a machine used for backups onto ieee1394 disks locks up completely.

Usually this happens a few seconds after disconnecting the drives, the drives have been dismounted for a considerable time before that. There is a single message on the screen, written here from a note:

Kernel panic - not syncing: drivers/block/cfq-iosched.c:1065 spin_is_locked on uninitialized spinlock ddd1e81c (Not tainted)

At this point only power off seems to help.

This happens at long intervals, one or two weeks. It has also happened at shutdown, some time after disconnecting a drive.

The backups are large, about 200-250GB each.

Version-Release number of selected component (if applicable):
kernel-2.6.11-1.14_FC3

How reproducible:
Sometimes

Steps to Reproduce:
1. Use ieee1394 disks.
2. Dismount and remove them.
3. Sometimes the machine locks up completely.

Actual Results:  Lockup, a single line on the console.

Expected Results:  Nothing, the machine should not panic.

Additional info:

This did not happen with earlier kernels.
Comment 1 Steve 2005-05-12 01:19:04 UTC 
hi

I have had a kernel panic when shutting down my laptop, 3 times over the last week.

I don't have a 1394 drive.

Kernel panic - not syncing: 
drivers/block/cfq-iosched.c:1065 spin_is_locked on uninitialized 
spinlock cda4a41c (Not tainted)

Steve
Comment 2 Dave Jones 2005-05-17 06:37:58 UTC 

*** This bug has been marked as a duplicate of 155472 ***