linux-kernel - Re: [uas/3.16.1] panic in uas_data

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Date:	Tue, 02 Sep 2014 08:50:11 +0200
From:	Hans de Goede <hdegoede@...hat.com>
To:	Chunwei Chen <tuxoko@...il.com>, Gerd Hoffmann <kraxel@...hat.com>,
	linux-usb@...r.kernel.org, linux-scsi@...r.kernel.org,
	usb-storage@...ts.one-eyed-alien.net, linux-kernel@...r.kernel.org
Subject: Re: [uas/3.16.1] panic in uas_data_cmplt()

Hi,

On 09/02/2014 06:18 AM, Chunwei Chen wrote:
> Dear all:
> 
> The kernel version is 3.16.1-1-ARCH
> 
> Today I keep getting this panic when booting up.
> http://i.imgur.com/0Rx93Kr.jpg
> 
> It might be that the UAS device was in some strange state,
> because that after I unplugged and power-cycled the UAS,
> everything went normal again.
> 
> Does anyone know what's the root cause of this issue?
> Or could anyone provide some instruction on how to debug this issue?

There seem to be some issues in the error handling paths of the uas
driver. I plan to rewrite them completely for robustness and go
through them with a fine comb to fix any possible bugs while at it.

I'll send out a mail when I've a new version ready for testing.

Regards,

Hans
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