Re: bug : Specific USB activity causes crash

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 08/18/2016 09:20 AM, Mathias Nyman wrote:
> On 18.08.2016 09:27, Felipe Balbi wrote:
>>
>> Hi,
>>
>> Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> writes:
>>> On Wed, Aug 17, 2016 at 09:56:02PM +0200, Filip Ayazi wrote:
>>>> Forwarding bug report from bugzilla #153211 as requested:
>>>>
>>>> System crashes completely during or immediately after installing APK to android
>>>> phone over usb using android studio. I was unable to reproduce this bug any
>>>> other way.
>>>
>>> So the crash is on the host device, or the gadget device (the phone)?
>>
>> Seems like host side gets stuck :-)
That is correct, my apologies for not making it clear.
>>
>>>> The only way to recover after the crash is a hard restart, netconsole captures
>>>> the following at the time:
>>>> [10592.718753] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [java:18908]
>>>> [10620.720015] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [java:18908]
>>>> [10648.721278] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10676.722541] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10704.723804] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10732.725067] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10760.726330] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10788.727594] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10816.728857] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> [10844.730120] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [java:18908]
>>>> Bisecting shown that commit
>>>> 86065c2719 "xhci: don't rely on precalculated value of needed trbs in the enqueue loop"
>>>> somehow introduced the issue, but I can't find how.
>>>> Please let me know how I can help to fix this.
>>
>> Can you test this commit?
>>
>> https://git.kernel.org/cgit/linux/kernel/git/mnyman/xhci.git/commit/?h=for-usb-linus&id=5be1233bacedbeb166c4f7a8136c03cec18bf1ee
>>
>> It's a patch mentioning the same situation
>>
This patch does indeed fix the problem, thanks.
>
> The patch is in Greg's usb-linus branch, and on it's way to Linus tree.
> 0d2daad xhci: really enqueue zero length TRBs.
>
> -Mathias
>
Filip Ayazi

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux