linux-kernel - Re: [PATCH] USB: Fix kernel oops with g

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Message-ID: <CAPs5rNZ07VZ0qK2PVG2u1DLEEnXS_CvVcYGLLE7fzFCcMo696A@mail.gmail.com>
Date:	Thu, 13 Oct 2011 10:31:08 +1100
From:	Aras Vaichas <arasv@...ellan-technology.com>
To:	Greg KH <gregkh@...e.de>
Cc:	"Mihai Don??u" <mihai.dontu@...il.com>,
	"Gadiyar, Anand" <gadiyar@...com>,
	Maxim Osipov <maxim.osipov@...il.com>,
	Sergei Shtylyov <sshtylyov@...sta.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: Fix kernel oops with g_ether and Windows

On 8 September 2010 10:34, Greg KH <gregkh@...e.de> wrote:
>
> On Wed, Sep 08, 2010 at 02:54:02AM +0300, Mihai Don??u wrote:
> > On Wednesday 08 September 2010 00:29:15 Greg KH wrote:
> > > On Tue, Sep 07, 2010 at 04:18:23PM +0530, Gadiyar, Anand wrote:
> > > > Since Greg has already sent a pull request, I won't touch the file
> > > > now; maybe a trivial patch later on to fix up the coding style.
> > >
> > > That would be fine to have, I'd gladly accept it.
> >
> > Would something like the following do? It's against:
> > git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6.git
> >
> > Corrected the coding style.
>
> Looks good, thanks, I'll go queue it up.

Did this patch get applied and the problem resolved?

I'm running 2.6.33.7-rt29 and we have a customer in India who
complains that they can't connect via USB. We don't have the problem
here, or anywhere else that we know of.

I looked at the logs of the device and it appears to have the same
Oops error as the one that this patch addresses.

e.g.
Oct  7 15:52:50 MDR4330-9000205 user.emerg kernel: Internal error:
Oops: 17 [#1] PREEMPT
Oct  7 15:52:50 MDR4330-9000205 user.emerg kernel: last sysfs file:
/sys/devices/platform/reader/firmware/reader/loading
Oct  7 15:52:50 MDR4330-9000205 user.warn kernel: Modules linked in:
readerdrv g_ether vfat fat
Oct  7 15:52:50 MDR4330-9000205 user.warn kernel: CPU: 0    Not
tainted  (2.6.33.7-rt29-magarm #101)
Oct  7 15:52:50 MDR4330-9000205 user.warn kernel: PC is at strlen+0x10/0x34
Oct  7 15:52:50 MDR4330-9000205 user.warn kernel: LR is at
rndis_msg_parser+0x81c/0x159c [g_ether]
Oct  7 15:52:50 MDR4330-9000205 user.warn kernel: pc : [<c013f0d8>]
lr : [<bf01cf30>]    psr: 60000013

Aras
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