Return-path: Received: from he.sipsolutions.net ([78.46.109.217]:58074 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755638Ab2DES41 (ORCPT ); Thu, 5 Apr 2012 14:56:27 -0400 Message-ID: <1333652183.3494.21.camel@jlt3.sipsolutions.net> (sfid-20120405_205631_681235_62603AA1) Subject: Re: [3.4-rc1][Regression][network wireless] 'task xxxx blocked for more than 120 seconds' after resume From: Johannes Berg To: maciej.rutecki@gmail.com Cc: Stanislaw Gruszka , Linux Kernel Mailing List , "Rafael J. Wysocki" , linux-wireless@vger.kernel.org, netdev Date: Thu, 05 Apr 2012 20:56:23 +0200 In-Reply-To: <201204052037.37497.maciej.rutecki@gmail.com> (sfid-20120405_203812_209408_5261E33E) References: <201204022157.05598.maciej.rutecki@gmail.com> <1333440469.3574.0.camel@jlt3.sipsolutions.net> <20120405103254.GE2378@redhat.com> <201204052037.37497.maciej.rutecki@gmail.com> (sfid-20120405_203812_209408_5261E33E) Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, 2012-04-05 at 20:37 +0200, Maciej Rutecki wrote: > On czwartek, 5 kwietnia 2012 o 12:32:54 Stanislaw Gruszka wrote: > > On Tue, Apr 03, 2012 at 10:07:49AM +0200, Johannes Berg wrote: > > > -ilw > > > +netdev > > > > > > I have no idea what this could be, but I'm almost certain it's not > > > caused by our wireless driver. Looks more like rtl8169 is to blame. > > > > I'm not sure. Looks like there is deadlock or infinite loop in process > > that holds rtnl lock. This can be wireless driver, wired driver or > > generic network code bug. > > > > Maciej, please recompile with CONFIG_LOCKDEP and check if it will not > > find any deadlock. If not, when problem will happen please do > > Did you mean "CONFIG_LOCKDEP_SUPPORT"? No, _SUPPORT means you could enable CONFIG_LOCKDEP, but we would like to see this with CONFIG_LOCKDEP enabled. johannes