Return-path: Received: from mx1.redhat.com ([209.132.183.28]:17078 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754172Ab1LANbE (ORCPT ); Thu, 1 Dec 2011 08:31:04 -0500 Date: Thu, 1 Dec 2011 14:31:17 +0100 From: Stanislaw Gruszka To: Eliad Peller Cc: Michal Hocko , LKML , "John W. Linville" , linux-wireless@vger.kernel.org, Yong Zhang Subject: Re: [3.2-rc3] 100% CPU usage while in del_timer_sync from iwl3945_rs_free_sta Message-ID: <20111201133116.GD5706@redhat.com> (sfid-20111201_143125_928608_D5C5F87E) References: <20111130101028.GA2906@tiehlicka.suse.cz> <20111130142316.GA2466@redhat.com> <20111130140316.GA4153@tiehlicka.suse.cz> <20111130153929.GA2144@redhat.com> <20111201085845.GA4602@tiehlicka.suse.cz> <20111201105538.GA4504@tiehlicka.suse.cz> <20111201115911.GA5706@redhat.com> <20111201124440.GB25614@tiehlicka.suse.cz> <20111201125554.GC5706@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Dec 01, 2011 at 03:13:42PM +0200, Eliad Peller wrote: > i don't really care about temporarily reverting it. > but maybe you can just add an "initialized" flag to iwl3945_rs_sta, > and check it on free_sta? This is not right solution, that will prevent hangs though, but we generally wipe out used data, so any other problem could be triggered. Stanislaw