From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934039AbcIVOqa (ORCPT ); Thu, 22 Sep 2016 10:46:30 -0400 Received: from mx2.suse.de ([195.135.220.15]:40634 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755940AbcIVOqV (ORCPT ); Thu, 22 Sep 2016 10:46:21 -0400 Message-ID: <1474555250.30534.1.camel@suse.com> Subject: Re: crash by cdc_acm driver in kernels 4.8-rc1/5 From: Oliver Neukum To: wim@djo.tudelft.nl Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Date: Thu, 22 Sep 2016 16:40:50 +0200 In-Reply-To: <20160921164122.GB18823@djo.tudelft.nl> References: <20160908115803.GA28274@djo.tudelft.nl> <1473337238.32073.2.camel@suse.com> <20160908125850.GC28274@djo.tudelft.nl> <1473339915.32073.3.camel@suse.com> <20160912024340.GA16266@djo.tudelft.nl> <1474376714.4358.28.camel@suse.com> <20160920154520.GA12174@djo.tudelft.nl> <1474460477.2675.19.camel@suse.com> <20160921164122.GB18823@djo.tudelft.nl> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2016-09-21 at 18:41 +0200, Wim Osterholt wrote: > On Wed, Sep 21, 2016 at 02:21:17PM +0200, Oliver Neukum wrote: > > in sysfs. > > Google pointed me to /sys/bus/usb/drivers/usb/* > where I find all kinds of 'bConfigurationValue'. > Now is the problem to find which one you could mean. > > Under /sys/bus/usb/drivers/usb/7-1 I find > manufacturer which reads 'Conexant' and > bConfigurationValue which reads '1' OK. Strange. Please do dmesg -c echo 9 > /proc/sysrq-trigger modprobe cdc_acm echo "module cdc_acm +mpf" > /sys/kernel/debug/dynamic_debug/control [plug your device in] and provide the full output of dmesg after that. Regards Oliver