linux-kernel - Re: [syzbot] KASAN: use-after-free Read in __queue

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Message-ID: <000000000000fd05a005c2389844@google.com>
Date:   Thu, 13 May 2021 09:27:04 -0700
From:   syzbot <syzbot+77e5e02c6c81136cdaff@...kaller.appspotmail.com>
To:     Markus.Elfring@....de, anant.thazhemadam@...il.com,
        davem@...emloft.net, gregkh@...uxfoundation.org, hdanton@...a.com,
        johan.hedberg@...il.com, kuba@...nel.org, linma@....edu.cn,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        luiz.dentz@...il.com, marcel@...tmann.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: use-after-free Read in __queue_work (3)

syzbot suspects this issue was fixed by commit:

commit e2cb6b891ad2b8caa9131e3be70f45243df82a80
Author: Lin Ma <linma@....edu.cn>
Date:   Mon Apr 12 11:17:57 2021 +0000

    bluetooth: eliminate the potential race condition when removing the HCI controller

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=127b3593d00000
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=77e5e02c6c81136cdaff
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=140e36a4900000

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

#syz fix: bluetooth: eliminate the potential race condition when removing the HCI controller

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