netdev - Re: usb/net/hso: WARNING: ungligned urb->setup

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Date:   Tue, 28 Feb 2017 19:32:09 +0100 (CET)
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Baruch Siach <baruch@...s.co.il>
Cc:     netdev@...r.kernel.org, linux-usb@...r.kernel.org,
        John Youn <johnyoun@...opsys.com>,
        Olivier Sobrie <olivier@...rie.be>,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: usb/net/hso: WARNING: ungligned urb->setup_dma

Hi Baruch,

> Baruch Siach <baruch@...s.co.il> hat am 28. Februar 2017 um 19:07 geschrieben:
> 
> 
> Hi Stefan,
> 
> On Tue, Feb 28, 2017 at 05:21:18PM +0100, Stefan Wahren wrote:
> > Am 28.02.2017 um 13:01 schrieb Baruch Siach:
> > > On Tue, Feb 28, 2017 at 10:28:10AM +0200, Baruch Siach wrote:
> > > > I'm hitting this warning consistently on my Raspberry Pi 3 running 
> > > > kernel
> > > > v4.10.1 with some unrelated device tree changes, and a debug print (below).
> > > > The device identifies as "GlobeTrotter HSDPA Modem", VID: 0af0, PID: 6971.
> > > > The warning triggers consistently on first write access to /dev/ttyHS0 that
> > > > ModemManager attempts. The first line in the log is my debug print.
> > > I tested the same hardware successfully on an i.MX6 CuBox-i (ARM32) using the
> > > same kernel version (4.10.1), and on an x86_64 PC (4.9). So this seems to be
> > > platform specific. I don't have any other ARM64 machine at the moment, though.
> > 
> > those platforms usually doesn't use the dwc2 USB host controller. So it
> > should be tested with another dwc2 platform.
> 
> The code that initializes setup_dma is not under drivers/usb/dwc2/. Though the 
> problem looks like memory corruption, so its cause might be anywhere.

only a suspicion, but could you please try this patch [1]?

[1] - https://patchwork.kernel.org/patch/9166771/