linux-kernel - Re: WARNING in snd_usbmidi_submit_urb/usb_submit

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Date:   Wed, 3 Jun 2020 08:12:51 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     syzbot <syzbot+5f1d24c49c1d2c427497@...kaller.appspotmail.com>
Cc:     andreyknvl@...gle.com, balbi@...nel.org, ingrassia@...genesys.com,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: WARNING in snd_usbmidi_submit_urb/usb_submit_urb

On Tue, Jun 02, 2020 at 10:41:16PM -0700, syzbot wrote:
> syzbot has found a reproducer for the following crash on:
> 
> HEAD commit:    1ee08de1 Merge tag 'for-5.8/io_uring-2020-06-01' of git://..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=15f9e516100000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=b46ebd806238a886
> dashboard link: https://syzkaller.appspot.com/bug?extid=5f1d24c49c1d2c427497
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> userspace arch: i386
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1667dcca100000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13f9e516100000
> 
> The bug was bisected to:
> 
> commit f2c2e717642c66f7fe7e5dd69b2e8ff5849f4d10
> Author: Andrey Konovalov <andreyknvl@...gle.com>
> Date:   Mon Feb 24 16:13:03 2020 +0000
> 
>     usb: gadget: add raw-gadget interface

I thought this "bisect to the tool that finds bugs" issue was fixed :)