Re: Kernel 3.10.3 "reset SuperSpeed USB device number 2 using xhci_hcd"

[Stuart Foster <smf.linux-XZoyATsUNX5Wk0Htik3J/w@public.gmane.org>]

On 07/28/13 20:28, Alan Stern wrote:
> On Sat, 27 Jul 2013, Stuart Foster wrote:
>
>> On 07/27/13 20:34, Alan Stern wrote:
>>> On Sat, 27 Jul 2013, Stuart Foster wrote:
>>>
>>>> On 07/27/13 15:58, Alan Stern wrote:
>>>>> On Sat, 27 Jul 2013, Stuart Foster wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I have started having problems with an external USB 3 diskdrive, the
>>>>>> problems started when I moved from the 3.10.2 kernel to 3.10.3.
>>>>>> The machine is a ASUS M5A97 PRO, BIOS 1604.
>>>>>
>>>>> On Sat, 27 Jul 2013, Ed Tomlinson wrote:
>>>>>
>>>>>> Hi
>>>>>>
>>>>>> Same problem here with 3.10.3.  Dmesg filtered with 'hci'.
>>>>>
>>>>> Each of you, please post a usbmon trace showing what happens when the
>>>>> drive is plugged in.
>>>>>
>>>>> Alan Stern
>>>>>
>>>>>
>>>> Hi Alan
>>>>
>>>> Herewith the log you requested.
>>>
>>> The trace shows that something is sending an invalid INQUIRY command
>>> (one with a 512-byte transfer length) to the drive.  Normally such
>>> things are done by user programs, but in this case it looks more like
>>> the command came from somewhere in the kernel.  I have no idea where.
>>>
>>> Did you change anything besides the kernel when going from 3.10.2 to
>>> 3.10.3?
>>>
>>> If you boot now into a 3.10.2 kernel, does the drive work?
>>>
>>> What happens if you plug the drive into a USB-2 port?  (I expect it
>>> will make no difference at all.)
>>>
>>> Alan Stern
>>>
>>>
>> Hi Alan,
>>
>> The config between 3.10.2 and 3.10.3 did not change.
>>
>> The drive works correctly on 3.10.2 (I usually keep the previous kernel
>> available just in case).
>>
>> On 3.10.3 the drive fails in a similar manner when plugged into a USB-2
>> port.
>>
>> For interest I have tried the USB-3 drive in the USB-2 ports on an IBM
>> thinkpad R51 laptop that is also running 3.10.3 and that fails also.
>>
>> Conversely I have tried a USB-2 drive on both the IBM and my ASUS
>> machine and that works fine on 3.10.3 in all available USB ports.
>
> Thank you.  I was able to duplicate the problem on my own machine and
> track down the bug.
>
> It was introduced by commit 98dcc2946adb (SCSI: sd: Update WRITE SAME
> heuristics).  This commit adds a call to scsi_get_vpd_page() in
> sd_read_write_same() without first checking sd_try_extended_inquiry().
> As noted in the latter routine, VPD inquiries will crash some devices.
>
> Martin, this bug needs to be fixed in 3.11.  As far as the stable
> kernels are concerned, the best thing for now may simply be to revert
> it.
>
> Alan Stern
>
>
Hi Alan,

Thanks for the update I will look forward to a solution.

regards

Stuart Foster
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