From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751465AbXAPUbP (ORCPT ); Tue, 16 Jan 2007 15:31:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751422AbXAPUbP (ORCPT ); Tue, 16 Jan 2007 15:31:15 -0500 Received: from iolanthe.rowland.org ([192.131.102.54]:39558 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751469AbXAPUbO (ORCPT ); Tue, 16 Jan 2007 15:31:14 -0500 Date: Tue, 16 Jan 2007 15:31:10 -0500 (EST) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Andrey Borzenkov cc: linux-usb-devel@lists.sourceforge.net, Subject: Re: [linux-usb-devel] 2.6.20-rc5: BUG: lock held at task exit time! (pm_mutex){--..}, at: [] enter_state+0x3f/0x170 In-Reply-To: <200701162122.42581.arvidjaar@mail.ru> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 16 Jan 2007, Andrey Borzenkov wrote: > I have Toshiba Portege 4000 that almost always hangs dead resuming from STR. > This was better before 2.6.18, since then STR is unusable. Sometimes it > manages to resume; yesterday I got on console and in dmesg: > > ===================================== > [ BUG: lock held at task exit time! ] > - ------------------------------------- > echo/28793 is exiting with locks still held! > 1 lock held by echo/28793: > #0: (pm_mutex){--..}, at: [] enter_state+0x3f/0x170 > > stack backtrace: > [] show_trace_log_lvl+0x1a/0x30 > [] show_trace+0x12/0x20 > [] dump_stack+0x16/0x20 > [] debug_check_no_locks_held+0x87/0x90 > [] do_exit+0x4db/0x820 > [] do_group_exit+0x29/0x70 > [] sys_exit_group+0xf/0x20 > [] sysenter_past_esp+0x5f/0x99 > ======================= Have you tried using 2.6.19? There was a bug which got fixed in that release. Alan Stern