Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758266AbaD3JNq (ORCPT ); Wed, 30 Apr 2014 05:13:46 -0400 Received: from www.linutronix.de ([62.245.132.108]:48571 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754667AbaD3JNo (ORCPT ); Wed, 30 Apr 2014 05:13:44 -0400 Date: Wed, 30 Apr 2014 11:13:57 +0200 (CEST) From: Thomas Gleixner To: Dave Jones cc: Linux Kernel , peterz@infradead.org, davidlohr@hp.com, Linus Torvalds Subject: Re: [3.15-rc3] rtmutex-debug assertion. In-Reply-To: <20140430001432.GA32142@redhat.com> Message-ID: References: <20140429151655.GA14277@redhat.com> <20140430001432.GA32142@redhat.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 29 Apr 2014, Dave Jones wrote: > This is trickier to reproduce than it first seemed, as logging slows > things down so much. But after a few hours, it logged that the > call that triggered this was.. > > futex(uaddr=0x7f55ff8c4000, op=0x6, val=0x200000006223800b, utime=0x7f55ff8c4000, uaddr2=0x7f55ff8c4000, val3=-123) > > Those addresses come from an mmap we made on startup.. > > [init] mapping[3]: (zeropage PROT_READ | PROT_WRITE) 0x7f55ff8c4000 (1MB) > > op = FUTEX_LOCK_PI > > val seems to be garbage. > > I'll do another run, just to see if it's always the same set of values, > but it's going to probably take an overnight run. Do you have the full fuzzing log, so I can see what happened before/around that? Thanks, tglx -- 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/