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From: Alan Stern <stern@rowland.harvard.edu>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Johan Hovold <johan@kernel.org>,
	syzbot <syzbot+72af3105289dcb4c055b@syzkaller.appspotmail.com>,
	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org, mathias.nyman@linux.intel.com,
	syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] WARNING in do_proc_control/usb_submit_urb
Date: Mon, 12 Jul 2021 14:48:04 -0400	[thread overview]
Message-ID: <20210712184804.GA326369@rowland.harvard.edu> (raw)
In-Reply-To: <CACT4Y+biD8AdKncmvqmaz3dytV-zoeo==rdkTSJvaZ9=RUs=UA@mail.gmail.com>

On Mon, Jul 12, 2021 at 06:24:43PM +0200, Dmitry Vyukov wrote:
> On Mon, 12 Jul 2021 at 18:14, Alan Stern <stern@rowland.harvard.edu> wrote:

> > > It looks like the second patch you submitted was hand-edited and still
> > > quoted.
> > >
> > > And looking at the dashboard it seems like no patch was applied for your
> > > second test attempt:
> > >
> > >       https://syzkaller.appspot.com/bug?extid=72af3105289dcb4c055b
> >
> > Yes, that explains it.  Funny how easy it is to miss those "> "
> > markings -- you just get too used to them.
> >
> > > I've been bitten by something like this before when erroneously thinking
> > > that a test command could be submitted as a reply to a patch.
> > >
> > > Perhaps the report mail could include the patch tested or something so
> > > we don't spend time investigating syzbot interface failures.
> >
> > Good idea.
> 
> The email always include the patch tested (as syzbot parsed it), see
> e.g. earlier reply in this thread:
> https://lore.kernel.org/lkml/00000000000074f06705c6ccd2a4@google.com/

The email doesn't include the patch; it includes a _link_ to the patch.

And the email does not contain any indication when no patch was parsed, 
other than the missing "patch:" link -- which is not particularly 
obvious if you aren't looking for it specifically:

	https://marc.info/?l=linux-usb&m=162602190812912&w=2

> > Anyway, here's the patch again, this time properly formatted.  Hopefully
> > now it will work.
> 
> syzbot parsed this patch successfully:
> https://syzkaller.appspot.com/bug?extid=72af3105289dcb4c055b

Yes, and it worked.  Time to submit it.

Alan Stern

  reply	other threads:[~2021-07-12 18:48 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-10 11:11 [syzbot] WARNING in do_proc_control/usb_submit_urb syzbot
2021-07-10 14:50 ` Alan Stern
2021-07-10 22:58   ` syzbot
2021-07-11  0:36     ` Alan Stern
2021-07-11 15:53   ` Alan Stern
2021-07-11 16:07     ` syzbot
2021-07-12 14:00       ` Alan Stern
2021-07-12 15:29         ` Johan Hovold
2021-07-12 15:50           ` Johan Hovold
2021-07-12 16:14             ` Alan Stern
2021-07-12 16:24               ` Dmitry Vyukov
2021-07-12 18:48                 ` Alan Stern [this message]
2021-07-15  7:19                   ` Dmitry Vyukov
2021-07-12 16:32               ` syzbot

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