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Date: Mon, 09 Sep 2019 11:47:24 +0200
From: Oliver Neukum <oneukum@...e.com>
To: Hui Peng <benquike@...il.com>,
Andrey Konovalov <andreyknvl@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
alexios.zavras@...el.com, Thomas Gleixner <tglx@...utronix.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Mathias Payer <mathias.payer@...elwelt.net>,
Stephen Hemminger <stephen@...workplumber.org>,
rfontana@...hat.com,
syzbot+44d53c7255bb1aea22d2@...kaller.appspotmail.com,
LKML <linux-kernel@...r.kernel.org>,
USB list <linux-usb@...r.kernel.org>,
netdev <netdev@...r.kernel.org>
Subject: Re: WARNING in hso_free_net_device
Am Donnerstag, den 05.09.2019, 22:05 -0400 schrieb Hui Peng:
>
> On 9/5/2019 7:24 AM, Andrey Konovalov wrote:
> > On Thu, Sep 5, 2019 at 4:20 AM Hui Peng <benquike@...il.com> wrote:
> > >
> > > Can you guys have a look at the attached patch?
> >
> > Let's try it:
> >
> > #syz test: https://github.com/google/kasan.git eea39f24
> >
> > FYI: there are two more reports coming from this driver, which might
> > (or might not) have the same root cause. One of them has a suggested
> > fix by Oliver.
> >
> > https://syzkaller.appspot.com/bug?extid=67b2bd0e34f952d0321e
> > https://syzkaller.appspot.com/bug?extid=93f2f45b19519b289613
> >
>
> I think they are different, though similar.
> This one is resulted from unregistering a network device.
> These 2 are resulted from unregistering a tty device.
Hi,
looks like it. That may indeed be the issue.
Please try to have syzbot test your patch and we will
know more.
Regards
Oliver
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