From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754382Ab1E3HDq (ORCPT ); Mon, 30 May 2011 03:03:46 -0400 Received: from cantor2.suse.de ([195.135.220.15]:40309 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751490Ab1E3HDp convert rfc822-to-8bit (ORCPT ); Mon, 30 May 2011 03:03:45 -0400 From: Oliver Neukum Organization: SUSE To: Riccardo Magliocchetti , linux-usb@vger.kernel.org Subject: Re: [2.6.39] crash in acm_ctrl_msg+0x16/0x59 Date: Mon, 30 May 2011 07:54:14 +0200 User-Agent: KMail/1.13.5 (Linux/2.6.39-rc4-12-desktop+; KDE/4.4.4; x86_64; ; ) Cc: Linux Kernel Mailing List , Oliver Neukum , "Greg Kroah-Hartman" References: <4DE25252.7050503@gmail.com> In-Reply-To: <4DE25252.7050503@gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 8BIT Message-Id: <201105300754.14490.oneukum@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Sonntag, 29. Mai 2011, 16:04:02 schrieb Riccardo Magliocchetti: > mtp-probe: bus: 6, device: 4 was not an MTP device > [20462.901834] cdc_acm 6-1:1.0: ttyACM0: USB ACM device > [20462.904417] usbcore: registered new interface driver cdc_acm > [20462.904420] cdc_acm: v0.26:USB Abstract Control Model driver for USB > modems and ISDN adapters > [20463.624142] usb 6-1: USB disconnect, device number 4 > [20463.641859] CPU 0 > > This is the stracktrace: > > acm_ctrl_msg+0x16/0x59 > mutex_lock+0x13/0x2a > acm_port_down+0x4c/0xcb > acm_tty_close+0x75/0x93 > tty_release+0x1b5/0x47c > ? compat_do_readv_write+0x199/0x1ae > fput+0xf8/0x1ad > filp_close+0x69/0x75 > sys_close+0x8a/0xea > sysenter_dispatch+0x07/0x32 So we are trying to talk to a device that is already gone. Is there anything unusual about your device? Could you post "lsusb -v"? Regards Oliver -- - - - SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg) Maxfeldstraße 5 90409 Nürnberg Germany - - -