linux-kernel - Re: crash by cdc_acm driver in kernels 4.8-rc1/5

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Message-ID: <20161017152042.GA26559@djo.tudelft.nl>
Date:   Mon, 17 Oct 2016 17:20:42 +0200
From:   Wim Osterholt <wim@....tudelft.nl>
To:     Oliver Neukum <oneukum@...e.com>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        Wim Osterholt <wim@....tudelft.nl>
Subject: Re: crash by cdc_acm driver in kernels 4.8-rc1/5

On Mon, Oct 17, 2016 at 04:10:45PM +0200, Oliver Neukum wrote:
> Hi,
>    
> I got one of those devices. However, I don't get a crash.
> Could you please give me instructions on how you trigger it?

That's not too hard, just plug it in. :-)

However you must have set cdc_acm in your kernel, or availabe as a module. 
It happens on all my machines on kernels 4.8 and 4.9.
Now, all my kernel configs will differ a bit, but must have something
peculiar in common. Or you've received a totally different device.

Here's one config at http://webserver.djo.tudelft.nl/.config-4.8.1

Many options are inherited by 'make oldconfig' from version to version,
without me knowing what it all means. So maybe it's just a weird combination
of options then?

Regards, Wim.