From: Stefan Assmann <sassmann@kpanic.de>
To: ali@internetdog.org
Cc: linux-wireless@vger.kernel.org, Larry Finger <Larry.Finger@lwfinger.net>
Subject: Re: Oops in rtl8192ce when unloading the module
Date: Sun, 14 Aug 2011 10:22:57 +0200 [thread overview]
Message-ID: <4E4785E1.5060000@kpanic.de> (raw)
In-Reply-To: <20110814060015.GA13600@internetdog.org>
On 14.08.2011 08:00, Ali Bahar wrote:
> Hi Stefan,
>
> it is _Larry_ who knows this code, of course. But, having browsed thru
> this for the first time,
>
>
> On Sat, Aug 13, 2011 at 01:26:49PM +0200, Stefan Assmann wrote:
>> 01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:8176] (rev 01)
>>
>> This happens with 3.1.0-rc1
>>
>> modprobe -r rtl8192ce
>> [ 450.710489] BUG: unable to handle kernel NULL pointer dereference at 0000000000000620
>> [ 450.710505] IP: [<ffffffffa0224972>] rtl92ce_get_desc+0x53/0x96 [rtl8192ce]
[...]
>
> this seems like a concurrency issue. Right when it is deregistering
> the IRQ handler, a packet is received. If so, then
>
> 1. it should not be reproducible on a quiet network eg when there is no
> data traffic && there are no APs around. (Or if you've wrapped the
> adapter in layers of foil! :-)
>
> 2. it should be only intermittently reproducible otherwise.
Hi Ali,
I haven't wrapped it in foil yet, but what I can say is that I tried to
unload the module 5-6 times and it oopsed every single time.
Stefan
prev parent reply other threads:[~2011-08-14 8:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-13 11:26 Oops in rtl8192ce when unloading the module Stefan Assmann
2011-08-14 6:00 ` Ali Bahar
2011-08-14 8:22 ` Stefan Assmann [this message]
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