Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1754188AbcKUXt5 (ORCPT <rfc822;w@1wt.eu>);
        Mon, 21 Nov 2016 18:49:57 -0500
Received: from mail-wm0-f65.google.com ([74.125.82.65]:32914 "EHLO
        mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1753943AbcKUXtz (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 21 Nov 2016 18:49:55 -0500
Subject: Re: crash by cdc_acm driver in kernels 4.8-rc1/5
To: wim@djo.tudelft.nl, Oliver Neukum <oneukum@suse.com>
References: <20161115001619.GA21030@djo.tudelft.nl>
 <cdba9e09-6550-a4b5-a3ed-86ce212d8a4a@gmail.com>
 <20161115132930.GA20918@djo.tudelft.nl> <1479299670.2000.13.camel@suse.com>
 <20161116150757.GA15605@djo.tudelft.nl>
 <20161117015732.GA17637@djo.tudelft.nl>
 <20161117091434.GA6107@djo.tudelft.nl>
 <20161117161134.GA14413@djo.tudelft.nl> <1479734372.2332.1.camel@suse.com>
 <20161121155825.GA29918@djo.tudelft.nl>
 <20161121202351.GA25563@djo.tudelft.nl>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
From: poma <pomidorabelisima@gmail.com>
Message-ID: <008bd98d-fb0c-e1c8-8e0a-c16e0eecf641@gmail.com>
Date: Tue, 22 Nov 2016 00:49:51 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <20161121202351.GA25563@djo.tudelft.nl>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 677
Lines: 19

On 21.11.2016 21:23, Wim Osterholt wrote:
> On Mon, Nov 21, 2016 at 04:58:25PM +0100, Wim Osterholt wrote:
>>
>> I didn't find traces of kernel-4.9-rc5 being ran on any of my laptops, so I
>> can't have seen a crash on rc5. It seems rc5 and rc6 is safe now.
> 
> Neither 4.8.10, nor 4.8.9 show the bug.
> It must be a bug ouside cdc_acm that they have fixed. (a late propagation of
> the IRQ-penalty-bug-fix maybe?)
> 
> I'm rebuilding 4.8.8 now.
> 
> Groeten, Wim.
> 


After all the patching and testing I concluded the same, 
breakage came and is gone outside drivers/usb/class/
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/diff/?id=v4.9-rc5&id2=v4.9-rc4