Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751232AbaDQWze (ORCPT ); Thu, 17 Apr 2014 18:55:34 -0400 Received: from www.meduna.org ([92.240.244.38]:39364 "EHLO meduna.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750928AbaDQWz3 (ORCPT ); Thu, 17 Apr 2014 18:55:29 -0400 Message-ID: <53505BD7.9050004@meduna.org> Date: Fri, 18 Apr 2014 00:55:19 +0200 From: Stanislav Meduna User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: "linux-rt-users@vger.kernel.org" , triplesquarednine@gmail.com CC: Linux ARM Kernel , "linux-kernel@vger.kernel.org" , bigeasy@linutronix.de, Steven Rostedt , Thomas Gleixner Subject: Re: BUG: spinlock trylock failure on UP - reverting timer patches helps References: <534C3606.7010206@meduna.org> <534C731F.1050406@meduna.org> <534DADF1.6060608@meduna.org> <53500184.4050309@meduna.org> In-Reply-To: <53500184.4050309@meduna.org> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Authenticated-User: stano@meduna.org X-Authenticator: dovecot_plain X-Spam-Score: -6.9 X-Spam-Score-Int: -68 X-Exim-Version: 4.72 (build at 25-Oct-2012 18:35:58) X-Date: 2014-04-18 00:55:23 X-Connected-IP: 95.105.163.217:8013 X-Message-Linecount: 52 X-Body-Linecount: 33 X-Message-Size: 1813 X-Body-Size: 895 X-Received-Count: 1 X-Recipient-Count: 7 X-Local-Recipient-Count: 7 X-Local-Recipient-Defer-Count: 0 X-Local-Recipient-Fail-Count: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 17.04.2014 18:29, Stanislav Meduna wrote: > Note: the bug goes away reverting the very same patches that are > helping the Jordan's problms. I did follow > > http://www.spinics.net/lists/linux-rt-users/msg11639.html > > and no BUG while booting anymore. I'll try to let it run some > more time. Erm.. nope # (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack KernelStack: 5920 kB KernelStack: 5928 kB # (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack KernelStack: 5952 kB KernelStack: 5960 kB maybe interrupt nesting ad nauseum? How does one debug such issues? It is possible that my previous posting was also caused by this - disregard, I'll post again if the problem persists. Jordan, could you check whether your kernel stack remains stable with only the 3 patches reverted? Thanks -- Stano -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/