Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752930AbYJTOCf (ORCPT ); Mon, 20 Oct 2008 10:02:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751830AbYJTOC0 (ORCPT ); Mon, 20 Oct 2008 10:02:26 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:58946 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751806AbYJTOC0 (ORCPT ); Mon, 20 Oct 2008 10:02:26 -0400 Date: Mon, 20 Oct 2008 10:02:25 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Justin Piszcz cc: Oliver Neukum , , Subject: Re: Kernel 2.6.26.5 -> 2.6.27.2 [USB REGRESSION] (USB -> D_STATE) In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1165 Lines: 36 On Sun, 19 Oct 2008, Justin Piszcz wrote: > > You should turn on the usbfs_snoop module parameter for usbcore and see > > what shows up in the system log. > > > Alan Stern > > Tried this, kernel would not boot up any further when I had that enabled > alongside the 'extra' debugging options in the kernel: > > http://home.comcast.net/~jpiszcz/20081019/2.6.27.2-usb-extra-debug.txt I'm not interested in your config file; I need to see the dmesg log. > > Please get sysrq-t of a hang. > > > > Regards > > Oliver > > > > Before I tried the above, I was able to get a sysrq-t of the hang: > > http://home.comcast.net/~jpiszcz/20081019/trace_before_trigger.txt > http://home.comcast.net/~jpiszcz/20081019/trace_after_trigger.txt Your trace is incomplete. You might need to increase the size of the kernel log buffer (CONFIG_LOG_BUF_SHIFT) or the size of the buffer used by dmesg (the -s option). Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/