linux-kernel - Re: possible deadlock in usb_deregister

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Date:   Tue, 17 Sep 2019 05:42:01 -0700
From:   syzbot <syzbot+f9549f5ee8a5416f0b95@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, gregkh@...uxfoundation.org,
        johan@...nel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, oneukum@...e.com,
        stern@...land.harvard.edu, syzkaller-bugs@...glegroups.com
Subject: Re: possible deadlock in usb_deregister_dev (2)

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+f9549f5ee8a5416f0b95@...kaller.appspotmail.com

Tested on:

commit:         f0df5c1b usb-fuzzer: main usb gadget fuzzer driver
git tree:       https://github.com/google/kasan.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5
dashboard link: https://syzkaller.appspot.com/bug?extid=f9549f5ee8a5416f0b95
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=16753b2d600000

Note: testing is done by a robot and is best-effort only.