Bug 13305

Summary: cpu_add_remove_lock circular dependency at hibernate
Product: Power Management Reporter: Johannes Berg (johannes)
Component: Hibernation/SuspendAssignee: power-management_other
Severity: normal CC: rjw, rui.zhang
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.30-rc5-wl-23297-gbf2c6a3-dirty Tree: Mainline
Regression: Yes
Bug Depends on:    
Bug Blocks: 7216    
Attachments: lockdep report

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.