Bug 15202

Summary:	lockdep warning during elevator_switch
Product:	File System	Reporter:	Rafael J. Wysocki (rjw)
Component:	SysFS	Assignee:	Greg Kroah-Hartman (greg)
Status:	CLOSED CODE_FIX
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.33-rc3	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	14885

Description Rafael J. Wysocki 2010-02-01 00:24:34 UTC

Subject    : lockdep warning during elevator_switch
Submitter  : Hugh Dickins <hugh.dickins@tiscali.co.uk>
Date       : 2010-01-31 23:55
References : http://marc.info/?l=linux-kernel&m=126498212613051&w=4

This entry is being used for tracking a regression from 2.6..  Please don't
close it until the problem is fixed in the mainline.

Comment 1 Rafael J. Wysocki 2010-02-08 00:11:00 UTC

On Monday 08 February 2010, Hugh Dickins wrote:
> On Sun, 7 Feb 2010, Rafael J. Wysocki wrote:
> 
> > This message has been generated automatically as a part of a summary report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let the
> tracking team
> > know (either way).
> > 
> > 
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=15202
> > Subject             : lockdep warning during elevator_switch
> > Submitter   : Hugh Dickins <hugh.dickins@tiscali.co.uk>
> > Date                : 2010-01-31 23:55 (8 days old)
> > References  : http://marc.info/?l=linux-kernel&m=126498212613051&w=4
> 
> Yes, still so in 2.6.33-rc7.

Comment 2 Rafael J. Wysocki 2010-03-22 21:26:27 UTC

On Monday 22 March 2010, Hugh Dickins wrote:
> On Sun, 21 Mar 2010, Rafael J. Wysocki wrote:
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.32 and 2.6.33.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=15202
> > Subject             : lockdep warning during elevator_switch
> > Submitter   : Hugh Dickins <hugh.dickins@tiscali.co.uk>
> > Date                : 2010-01-31 23:55 (50 days old)
> > References  : http://marc.info/?l=linux-kernel&m=126498212613051&w=4
> 
> Yes, it is still a regression 2.6.33.1 (though fixed in 2.6.34-rc1:
> my guess is that it will be left as a regression in 2.6.33-stable,
> since it only happens when you have chosen CONFIG_PROVE_LOCKING=y).