From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759548AbaGYHwN (ORCPT ); Fri, 25 Jul 2014 03:52:13 -0400 Received: from ns207790.ip-94-23-215.eu ([94.23.215.26]:50714 "EHLO ns207790.ip-94-23-215.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756912AbaGYHwM (ORCPT ); Fri, 25 Jul 2014 03:52:12 -0400 X-Greylist: delayed 504 seconds by postgrey-1.27 at vger.kernel.org; Fri, 25 Jul 2014 03:52:12 EDT MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Fri, 25 Jul 2014 10:43:46 +0300 From: =?UTF-8?Q?R=C3=A9mi_Denis-Courmont?= To: Sasha Levin Cc: "Paul E. McKenney" , "David S. Miller" , LKML , , Dave Jones Subject: Re: net, phonet, rcu: rcu hang within =?UTF-8?Q?gprs=5Fattach?= In-Reply-To: <53D1865F.7040604@oracle.com> References: <53D1865F.7040604@oracle.com> Message-ID: <8427f661d1aa5707ee18596e812fd3c5@roundcube.remlab.net> User-Agent: Roundcube Webmail/0.7.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Le 2014-07-25 01:19, Sasha Levin a écrit : > This has reproduced couple of times, and has always originated from > gprs_attach. I don't see any obvious > issues with the code there, so I'm not sure if it's a fault of the > phonet or the rcu code. Beats me :-( Is it systematic or pseudo-random? To be honest, I do not remember how well we tested that error path way back when. Nevertheless gprs_detach() does basically the same thing, in the non-error case, and it definitely worked well as far as I could tell. Maybe Phonet should be dropped though. As much as I like to have my name in MAINTAINERS, I have not heard of any remaining users for up-to-date kernel versions. And with Broadcom shutting down what was Nokia Wireless Modems, I doubt we will see new users ever. -- Rémi Denis-Courmont