linux-kernel - Re: Kernel 3.16.0 USB crash

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Date:	Wed, 13 Aug 2014 23:36:05 +0200
From:	Matt <jackdachef@...il.com>
To:	Claudio Bizzarri <claudio.bizzarri@...il.com>
Cc:	kraxel@...hat.com, hdegoede@...hat.com,
	sarah.a.sharp@...ux.intel.com,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: Kernel 3.16.0 USB crash

On Wed, Aug 13, 2014 at 10:24 PM, Matt <jackdachef@...il.com> wrote:
> Hi Claudio,
>
> this issue is clearly caused by UAS.
>
> if
>
> zcat /proc/config.gz | grep UAS
> # CONFIG_USB_UAS is not set
>
> is de-selected, everything's fine
>
> when this is selected (usb is compiled as a module here)
>
> the system crashes or hardlocks as soon as an USB 3.0 capable drive is
> connected.
>
> During bootup the system crashes as soon as the kernel module is loaded.
>
> This happened for me with 3.15.6 and 3.16.0 kernel (and 3.16-rc6).
>
> I've a different chipset but the symptoms are similar:
>
> 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset
> Family USB xHCI (rev 05)
>
>
> So the only solution to work with newer kernels right now is to
> de-select that option and re-compile the kernel. It doesn't help fix
> the problem but at least it mitigates the issues for now (crash).
>
>
> Regards
>
> Matt

Adding some relevant CCs
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