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From: Andrey Konovalov <andreyknvl@google.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Dmitry Vyukov <dvyukov@google.com>,
	syzbot <syzbot+c7b0ec009a216143df30@syzkaller.appspotmail.com>,
	Hans Verkuil <hverkuil@xs4all.nl>,
	Souptick Joarder <jrdr.linux@gmail.com>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-media@vger.kernel.org, USB list <linux-usb@vger.kernel.org>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Richard Fontana <rfontana@redhat.com>,
	syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: KASAN: use-after-free Read in usbvision_v4l2_open
Date: Thu, 12 Dec 2019 17:08:01 +0100
Message-ID: <CAAeHK+xVxFGiJGzEv09GtwfU1wBhCsoEukKXUxW0nq-2h9Aasw@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1912111111510.1549-100000@iolanthe.rowland.org>

On Wed, Dec 11, 2019 at 5:22 PM Alan Stern <stern@rowland.harvard.edu> wrote:
>
> On Wed, 11 Dec 2019, Dmitry Vyukov wrote:
>
> > > > By the way, do you know why syzbot sent _two_ reply messages?  One with
> > > > message ID <00000000000031a0af05995eca0b@google.com> and the other with
> > > > message ID <000000000000441a4205995eca11@google.com>?  It seems like
> > > > overkill.
> > >
> > > Hm, I'm not sure. Dmitry?
> >
> > I would assume it received 2 emails (second from syzkaller-bugs@
> > mailing list) and deduplication logic did not work somehow. So it
> > replied to both.
>
> Does that mean when I send in a test request, it's better to omit
> syzkaller-bugs from the CC: list?
>
> Also, whatever did happen to the most recent test request (the one sent
> to syzbot+7fa38a608b1075dfd634 even though it was meant to test the
> bug reported by syzbot+c7b0ec009a216143df30)?  Did it truly fail to
> build?  I can't find anything about it in the dashboard link for either
> bug report, and I haven't gotten a reply from syzbot.

Yes, the patch failed due to msleep() being undefined in that source
file. I'm not sure why syzbot didn't send a response. Could you try
resending the patch as the reply to that other syzbot report?

      reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-09 22:15 syzbot
2019-12-10 19:47 ` Alan Stern
2019-12-10 19:48   ` syzbot
2019-12-10 20:17     ` Alan Stern
2019-12-11 14:23       ` Andrey Konovalov
2019-12-11 15:14         ` Alan Stern
2019-12-11 15:35           ` Dmitry Vyukov
2019-12-12 16:52       ` general protection fault in usb_set_interface Alan Stern
2019-12-10 19:48   ` Re: KASAN: use-after-free Read in usbvision_v4l2_open syzbot
2019-12-10 20:06   ` Andrey Konovalov
2019-12-10 20:13     ` Alan Stern
2019-12-11 14:22       ` Andrey Konovalov
2019-12-11 15:30         ` Dmitry Vyukov
2019-12-11 16:22           ` Alan Stern
2019-12-12 16:08             ` Andrey Konovalov [this message]

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