linux-kernel - Re: possible deadlock in usb_deregister

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Date:   Mon, 12 Aug 2019 05:31:00 -0700
From:   syzbot <syzbot+a64a382964bf6c71a9c0@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        oneukum@...e.de, stern@...land.harvard.edu,
        syzkaller-bugs@...glegroups.com
Subject: Re: possible deadlock in usb_deregister_dev

Hello,

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

Reported-and-tested-by:  
syzbot+a64a382964bf6c71a9c0@...kaller.appspotmail.com

Tested on:

commit:         e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree:       https://github.com/google/kasan.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=cfa2c18fb6a8068e
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=16a8a38c600000

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