linux-kernel - Re: [v3.11][Regression] HID: hyperv: convert alloc+memcpy to memdup

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Date:	Fri, 27 Sep 2013 10:42:10 -0400
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	Jiri Kosina <jkosina@...e.cz>
CC:	Dan Carpenter <dan.carpenter@...cle.com>, thomas@...3r.de,
	list@...osl.org, Haiyang Zhang <haiyangz@...rosoft.com>,
	LKML <linux-kernel@...r.kernel.org>, open@...osl.org,
	HID CORE LAYER <linux-input@...r.kernel.org>,
	devel@...uxdriverproject.org
Subject: Re: [v3.11][Regression] HID: hyperv: convert alloc+memcpy to memdup

On 09/27/2013 06:50 AM, Jiri Kosina wrote:
> On Wed, 25 Sep 2013, Joseph Salisbury wrote:
>
>> After further testing reverting the following commit does in fact
>> resolve the bug:
>>
>> commit b1a1442a23776756b254b69786848a94d92445ba
>> Author: Jiri Kosina <jkosina@...e.cz>
>> Date: Mon Jun 3 11:27:48 2013 +0200
>>
>>     HID: core: fix reporting of raw events
>>
>> Reverting this commit in v3.12-rc2 prevents the system from locking up, 
>> which happens when connecting a bluetooth trackpad.
>>
>> Jiri, do you think we should revert this patch, or is there some further 
>> debugging/data collecting you would like to do?
> Hi Joseph,
>
> in this mail:
>
> 	Message-ID: <5241992E.3090805@...onical.com>
> 	Date: Tue, 24 Sep 2013 09:52:46 -0400
>
> you said that reverting this commit doesn't prevent the lockups, so I am 
> rather confused ... ?
>
> Thanks,
>
The testing was invalid.  Reverting commit b1a1442 does resolve the bug
and stop the lockups.

Thanks,

Joe
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