Bug 13305 - cpu_add_remove_lock circular dependency at hibernate
Summary: cpu_add_remove_lock circular dependency at hibernate
Status: REJECTED INSUFFICIENT_DATA
Alias: None
Product: Power Management
Classification: Unclassified
Component: Hibernation/Suspend (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: power-management_other
URL:
Keywords:
Depends on:
Blocks: 7216
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Reported: 2009-05-14 09:32 UTC by Johannes Berg
Modified: 2009-12-28 08:14 UTC (History)
2 users (show)

See Also:
Kernel Version: 2.6.30-rc5-wl-23297-gbf2c6a3-dirty
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
lockdep report (9.32 KB, text/plain)
2009-05-14 09:32 UTC, Johannes Berg 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Johannes Berg 2009-05-14 09:32:50 UTC 
Created attachment 21352 [details]
lockdep report

lockdep report attached

happens at resume too but in the old kernel so the report afterwards come from hibernate
Comment 1 Rafael J. Wysocki 2009-05-14 14:34:51 UTC 
ISTR seeing that already, can't recall where exactly.

What's the last known good kernel?
Comment 2 Johannes Berg 2009-05-14 14:47:12 UTC 
Not sure really, I'm almost certain .29 was good but even though I surely tested every rc I don't know much more than that right now.

I've also reported this before in various ways but nobody ever listened. I'm sure there's not much deadlock potential, but it's annoying to have to reboot to get lockdep into a working state again.
Comment 3 Zhang Rui 2009-10-15 08:04:53 UTC 
does the problem still exists in the latest kernel, say 2.6.31?
Comment 4 Zhang Rui 2009-12-28 08:14:29 UTC 
please re-open it if the problem still exists in 2.6.32.
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