From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750702AbWDSKqz (ORCPT ); Wed, 19 Apr 2006 06:46:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750713AbWDSKqz (ORCPT ); Wed, 19 Apr 2006 06:46:55 -0400 Received: from mail.gmx.net ([213.165.64.20]:62389 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1750702AbWDSKqy (ORCPT ); Wed, 19 Apr 2006 06:46:54 -0400 X-Authenticated: #4399952 Date: Wed, 19 Apr 2006 12:46:52 +0200 From: Florian Schmidt To: linux-kernel@vger.kernel.org, Ingo Molnar Subject: BUG with 2.6.16-rt17 Message-ID: <20060419124652.42147536@mango.fruits> X-Mailer: Sylpheed-Claws 1.0.5 (GTK+ 1.2.10; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, i found the time to build and boot into 2.6.16-rt17 and i got a BUG: softirq-hrtmono/9[CPU#0]: BUG in check_monotonic_clock at kernel/time/timeofday. c:162 [] show_trace+0x25/0x30 (20) [] dump_stack+0x23/0x30 (20) [] __WARN_ON+0x6b/0xb0 (40) [] check_monotonic_clock+0x119/0x130 (52) [] __get_monotonic_clock+0xaa/0xc0 (60) [] get_monotonic_clock+0x21/0x50 (32) [] it_real_fn+0x58/0xa0 (48) [] run_hrtimer_softirq+0xc4/0x270 (60) [] ksoftirqd+0x104/0x1c0 (48) [] kthread+0xdc/0xe0 (48) [] kernel_thread_helper+0x5/0x10 (268615708) --------------------------- | preempt count: 00000001 ] | 1-level deep critical section nesting: ---------------------------------------- .. [] .... __WARN_ON+0x20/0xb0 .....[] .. ( <= check_monotonic_clock+0x119/0x130) ------------------------------ | showing all locks held by: | (softirq-hrtmono/9 [effd07c0, 98]): ------------------------------ Besides the BUG i also am not able to run jackd with a periodsize of 16 frames reliably (xruns and a pretty big cpu load of around 30%). I suppose this might be due to the tracing overhead though (as preempt_max_latency shows a value of 34 and 16 frames at 48khz is in the 0.3ms range). Will rebuild w/o the tracing/debug stuff, to see how it performs then. Flo P.S.: .config available here: http://affenbande.org/~tapas/2.6.16-rt17-config -- Palimm Palimm! http://tapas.affenbande.org