linux-kernel - Re: ath9k: BUG kmalloc-8192: Poison overwritten

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Date:	Thu, 13 May 2010 18:13:18 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	Bruno Randolf <br1@...fach.org>
CC:	"Luis R. Rodriguez" <lrodriguez@...eros.com>,
	linux-wireless@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: ath9k: BUG kmalloc-8192: Poison overwritten

On 05/13/10 18:08, Bruno Randolf wrote:
> On Friday 14 May 2010 09:50:51 Justin P. Mattock wrote:
>> On 05/13/10 17:28, Luis R. Rodriguez wrote:
>>> On Thu, May 13, 2010 at 5:21 PM, Justin P. Mattock
>>>
>>> <justinmattock@...il.com>   wrote:
>>>> On 05/13/10 16:01, Luis R. Rodriguez wrote:
>>>>> On Thu, May 13, 2010 at 3:17 PM, Justin P. Mattock
>>>>>
>>>>> <justinmattock@...il.com>     wrote:
>>>>>> not sure what this is, but while at a convention
>>>>>> I was trying to access the internet and(below is
>>>>>> full dmesg) this showed up.
>>>>>>
>>>>>> After receiving this, I sat and tried to re-create
>>>>>> my steps to reproduce but had no luck(was even going
>>>>>> todo a bisect n the spot if I could re-create).
>>>>>
>>>>> OK this stuff is hard to reproduce it seems.. you have an Atheros
>>>>> AR5418 MAC/BB Rev:2 AR5133 RF Rev:81, what kconfig option do you use
>>>>> to get the poison stuff? I am just surprised we haven't seen it
>>>>> ourselves yet. Let me make sure all of us get this kconfig option
>>>>> enabled.
>>>>>
>>>>>     Luis
>>>>
>>>> CONFIG_ATH_COMMON=m
>>>> # CONFIG_ATH_DEBUG is not set
>>>> CONFIG_ATH5K=m
>>>> # CONFIG_ATH5K_DEBUG is not set
>>>> CONFIG_ATH9K_HW=m
>>>> CONFIG_ATH9K_COMMON=m
>>>> CONFIG_ATH9K=m
>>>> # CONFIG_ATH9K_DEBUGFS is not set
>>>>
>>>> if you need my .config let me know.
>>>> (I can try again reproducing, but man
>>>> just doesn't easily fire off).
>>>
>>> Oh I mean the config options to enable the poison rant.
>>>
>>>     Luis
>>
>> shoot.. not sure how to grep for the right info
>> in the .config for you, heres what grepping for COFIG_DEBUG
>> looks like:
>> CONFIG_DEBUG_FS=y
>> CONFIG_DEBUG_KERNEL=y
>> CONFIG_DEBUG_RT_MUTEXES=y
>> CONFIG_DEBUG_PI_LIST=y
>> CONFIG_DEBUG_SPINLOCK=y
>> CONFIG_DEBUG_MUTEXES=y
>> CONFIG_DEBUG_BUGVERBOSE=y
>> CONFIG_DEBUG_MEMORY_INIT=y
>> CONFIG_DEBUG_STACKOVERFLOW=y
>
> oh, this reminds me of a similar report we had for ath5k:
>
> https://bugzilla.kernel.org/show_bug.cgi?id=15861
>
> the subject on this mailing list was "ath5k misbehaving affecting other kernel
> parts unrelated?"
>
> bruno
>

Could be.. From what I remember
all I was doing was switching from
one wireless network to another
(then opening firefox to sign my life away).

eventually giving up, realizing I needed 99
big ones to be back on the grid.
(beauty of git though is I don't need
to be online to work).

Justin P. Mattock
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