From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752808AbXCJFbv (ORCPT ); Sat, 10 Mar 2007 00:31:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752689AbXCJFbv (ORCPT ); Sat, 10 Mar 2007 00:31:51 -0500 Received: from mx1.redhat.com ([66.187.233.31]:60620 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2993173AbXCJFbn (ORCPT ); Sat, 10 Mar 2007 00:31:43 -0500 Date: Sat, 10 Mar 2007 00:31:33 -0500 From: Dave Jones To: Linux Kernel Cc: Takashi Iwai Subject: 2.6.21-rc3 snd-usb-audio lockdep report. Message-ID: <20070310053133.GA6466@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , Takashi Iwai Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ============================================= [ INFO: possible recursive locking detected ] 2.6.20-1.2962.fc7 #1 --------------------------------------------- rosegardenseque/5229 is trying to acquire lock: (&grp->list_mutex){----}, at: [] snd_seq_deliver_event+0x93/0x173 [snd_seq] but task is already holding lock: (&grp->list_mutex){----}, at: [] snd_seq_deliver_event+0x93/0x173 [snd_seq] other info that might help us debug this: 1 lock held by rosegardenseque/5229: #0: (&grp->list_mutex){----}, at: [] snd_seq_deliver_event+0x93/0x173 [snd_seq] stack backtrace: Call Trace: [] __lock_acquire+0x151/0xbc4 [] lock_acquire+0x4c/0x65 [] :snd_seq:snd_seq_deliver_event+0x93/0x173 [] down_read+0x3e/0x4a [] :snd_seq:snd_seq_deliver_event+0x93/0x173 [] :snd_seq:snd_seq_kernel_client_dispatch+0x54/0x68 [] :snd_seq_dummy:dummy_input+0x54/0x5a [] :snd_seq:snd_seq_deliver_single_event+0xf8/0x1ec [] :snd_seq:snd_seq_deliver_event+0xe2/0x173 [] :snd_seq:snd_seq_dispatch_event+0xed/0x110 [] :snd_seq:snd_seq_check_queue+0xbc/0x105 [] :snd_seq:snd_seq_enqueue_event+0xb6/0xca [] :snd_seq:snd_seq_client_enqueue_event+0xcf/0x101 [] :snd_seq:snd_seq_write+0x140/0x198 [] vfs_write+0xcf/0x178 [] sys_write+0x47/0x70 [] tracesys+0xdc/0xe1 -- http://www.codemonkey.org.uk