Bug 15319

Summary: [BUG]: Possibe recursive locking detected in sysfs
Product: ACPI Reporter: Maciej Rutecki (maciej.rutecki)
Component: Power-ProcessorAssignee: Zhang Rui (rui.zhang)
Status: CLOSED INSUFFICIENT_DATA    
Severity: normal CC: acpi-bugzilla, jkacur, maciej.rutecki, rjw, rui.zhang
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.33-rc7 Subsystem:
Regression: No Bisected commit-id:
Bug Depends on:    
Bug Blocks: 14885    

Description Maciej Rutecki 2010-02-15 19:39:35 UTC 
Subject    : [BUG]: Possibe recursive locking detected in sysfs
Submitter  : John Kacur <jkacur@redhat.com>
Date       : 2010-02-11 17:11
Message-ID : 520f0cf11002110911t3f125649v73062e9851e2cfb3@mail.gmail.com
References : http://marc.info/?l=linux-kernel&m=126590832432598&w=2
Handled-By : Eric Biederman <ebiederm@aristanetworks.com>

This entry is being used for tracking a regression from 2.6.32.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Zhang Rui 2010-03-12 06:50:36 UTC 
the "Possible recursive locking detected in sysfs" issue has been fixed by the patch in this thread http://lkml.org/lkml/2010/2/11/329

John,

> This is still present in 2.6.33-rc8.
> I can trigger it every time. I have T500 laptop, the trick is to boot
> it up without plugging it in, so it is working on battery power, and
> then to shut the lid.
> first you get the message from above, and then it does a few more
> things before it freezes and I have to hard reboot it.
> The above problem does not occur if I have the laptop plugged into the wall.

please kill acpid before closing the lid and verify if the hang still exists.
Comment 2 Zhang Rui 2010-03-18 06:39:51 UTC 
ping...