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Message-ID: <00000000000097e45506043beaeb@google.com>
Date:   Thu, 31 Aug 2023 11:07:25 -0700
From:   syzbot <syzbot+a0c80b06ae2cb8895bc4@...kaller.appspotmail.com>
To:     hdanton@...a.com, johan.hedberg@...il.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        luiz.dentz@...il.com, luiz.von.dentz@...el.com,
        marcel@...tmann.org, pav@....fi, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in hci_send_acl

syzbot has bisected this issue to:

commit 45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a
Author: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
Date:   Wed Aug 9 23:49:33 2023 +0000

    Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1042c5ffa80000
start commit:   7271b2a53042 Add linux-next specific files for 20230818
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1242c5ffa80000
console output: https://syzkaller.appspot.com/x/log.txt?x=1442c5ffa80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1936af09cdef7dd6
dashboard link: https://syzkaller.appspot.com/bug?extid=a0c80b06ae2cb8895bc4
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13506923a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=147569efa80000

Reported-by: syzbot+a0c80b06ae2cb8895bc4@...kaller.appspotmail.com
Fixes: 45c37c4e9c9a ("Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync")

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

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