netdev - Re: KASAN: use-after-free Write in refcount_warn

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Message-ID: <000000000000c8101605ae7de686@google.com>
Date:   Fri, 04 Sep 2020 07:44:09 -0700
From:   syzbot <syzbot+7dd7f2f77a7a01d1dc14@...kaller.appspotmail.com>
To:     abhishekpandit@...omium.org, alainm@...omium.org,
        davem@...emloft.net, johan.hedberg@...il.com,
        johan.hedberg@...el.com, josua.mayer@....eu,
        jukka.rissanen@...ux.intel.com, keescook@...omium.org,
        kuba@...nel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, marcel@...tmann.org,
        mcchou@...omium.org, mike@...ndries.io, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Write in refcount_warn_saturate

syzbot suspects this issue was fixed by commit:

commit b83764f9220a4a14525657466f299850bbc98de9
Author: Miao-chen Chou <mcchou@...omium.org>
Date:   Tue Jun 30 03:15:00 2020 +0000

    Bluetooth: Fix kernel oops triggered by hci_adv_monitors_clear()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10f92e3e900000
start commit:   c0842fbc random32: move the pseudo-random 32-bit definitio..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=cf567e8c7428377e
dashboard link: https://syzkaller.appspot.com/bug?extid=7dd7f2f77a7a01d1dc14
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15b606dc900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=123e87cc900000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: Bluetooth: Fix kernel oops triggered by hci_adv_monitors_clear()

For information about bisection process see: https://goo.gl/tpsmEJ#bisection