Red Hat Bugzilla – Bug 157426
Kernel panic at shutdown or when disconnecting ieee1394 disk
Last modified: 2015-01-04 17:19:32 EST
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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):
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.
This did not happen with earlier kernels.
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)
*** This bug has been marked as a duplicate of 155472 ***