From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261562AbULTQVs (ORCPT ); Mon, 20 Dec 2004 11:21:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261563AbULTQVs (ORCPT ); Mon, 20 Dec 2004 11:21:48 -0500 Received: from mail-ex.suse.de ([195.135.220.2]:51379 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S261562AbULTQVj (ORCPT ); Mon, 20 Dec 2004 11:21:39 -0500 Date: Mon, 20 Dec 2004 17:21:36 +0100 Message-ID: From: Takashi Iwai To: Benjamin Herrenschmidt Cc: Linux Kernel list Subject: Re: [BUG] 2.6.10-rc3 snd-powermac crash In-Reply-To: <1103391238.5775.0.camel@gaston> References: <1103389648.5967.7.camel@gaston> <1103391238.5775.0.camel@gaston> User-Agent: Wanderlust/2.10.1 (Watching The Wheels) SEMI/1.14.5 (Awara-Onsen) FLIM/1.14.5 (Demachiyanagi) APEL/10.6 MULE XEmacs/21.4 (patch 15) (Security Through Obscurity) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At Sat, 18 Dec 2004 18:33:58 +0100, Benjamin Herrenschmidt wrote: > > On Sat, 2004-12-18 at 18:07 +0100, Benjamin Herrenschmidt wrote: > > Hi Takashi ! > > > > I get that regulary with latest kernel when using Alsa. Can't tell if it's new > > as I used dmasound so far, just wanted to give Alsa a try... > > It seems to be related to oss emulation I'd say ... it's triggered by > gtkpbbuttons volume control keys, which will open/ioctl/write/close the > device very quicky (changing volume & outputing a beep) So, it's not reproducible when you do playback normally? Can you get /proc/asound/card0/pcm0p/sub0/hw_params during playback? > Maybe a race ? This is a laptop, so UP, no PREEMPT. Well, the volume and PCM shouldn't be racy. I'd first suspect another bug in PCM OSS emulation code... Could you compile with CONFIG_SND_DEBUG=y and see whether it catches anything? thanks, Takashi