From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753644AbbBZKxK (ORCPT ); Thu, 26 Feb 2015 05:53:10 -0500 Received: from www.linutronix.de ([62.245.132.108]:48358 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751344AbbBZKxI (ORCPT ); Thu, 26 Feb 2015 05:53:08 -0500 Date: Thu, 26 Feb 2015 11:53:04 +0100 From: Sebastian Andrzej Siewior To: Mike Galbraith Cc: Gustavo Bittencourt , linux-rt-users , LKML , Thomas Gleixner , rostedt@goodmis.org, John Kacur Subject: Re: [ANNOUNCE] 3.18.7-rt2 Message-ID: <20150226105304.GB12992@linutronix.de> References: <20150223090617.GA26453@linutronix.de> <1424785301.8767.11.camel@gmail.com> <1424937725.3622.31.camel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1424937725.3622.31.camel@gmail.com> X-Key-Id: 97C4700B X-Key-Fingerprint: 09E2 D1F3 9A3A FF13 C3D3 961C 0688 1C1E 97C4 700B User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Mike Galbraith | 2015-02-26 09:02:05 [+0100]: >I found what was breaking my core2 lappy in 4.0-rt as well, namely the 4.0-rt? So you are a time traveler? >locking, ww_mutex: fix ww_mutex vs self-deadlock > >If the caller already holds the mutex, task_blocks_on_rt_mutex() >returns -EDEADLK, we proceed directly to rt_mutex_handle_deadlock() >where it's instant game over. The EDDEADLK / ELREADY seem to got broken duering the rtmutex rework. Now I see: | Wound/wait tests | --------------------- ww api failures: ok | ok | ok | ww contexts mixing: ok | ok | finishing ww context: ok | ok | ok | ok | locking mismatches: ok | ok | ok | EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok | spinlock nest unlocked: ok | with no backtrace from the ww code which I haven't seen before that patch. Applied. Sebastian