Bug 11380

Summary:	lockdep warning: cpu_add_remove_lock at:cpu_maps_update_begin+0x14/0x16
Product:	Drivers	Reporter:	Rafael J. Wysocki (rjw)
Component:	Input Devices	Assignee:	drivers_input-devices
Status:	CLOSED UNREPRODUCIBLE
Severity:	normal	CC:	dmitry.torokhov, mingo
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.27-rc3	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	11167

Description Rafael J. Wysocki 2008-08-20 05:52:40 UTC

Subject    : [input layer, lockdep warning] Re: [PATCH] cpuset: Rework sched domains and CPU hotplug handling (take 4)
Submitter  : Ingo Molnar <mingo@elte.hu>
Date       : 2008-08-20 6:44
References : http://marc.info/?l=linux-kernel&m=121921480931970&w=4

This entry is being used for tracking a regression from 2.6.26.  Please don't
close it until the problem is fixed in the mainline.

Comment 1 Dmitry Torokhov 2008-08-20 06:04:22 UTC

Is it reproducible in 2.6.27-rc3? Or is it only in Ingo's tree?

Comment 2 Rafael J. Wysocki 2008-10-24 14:31:18 UTC

Ingo, I guess it's been fixed already?

Comment 3 Ingo Molnar 2008-10-27 02:49:33 UTC

> http://bugzilla.kernel.org/show_bug.cgi?id=11380

> Ingo, I guess it's been fixed already?

no, AFAICS it's an input layer locking problem and i've seen no fixes 
for this specific bug.

	Ingo

Comment 4 Rafael J. Wysocki 2008-11-11 05:40:15 UTC

References : http://lkml.org/lkml/2008/11/11/116