linux-kernel - Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Write in __hci_acl_create_connection

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Date: Thu, 08 Feb 2024 07:32:04 -0800
From: syzbot <syzbot+3f0a39be7a2035700868@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, johan.hedberg@...il.com, 
	kuba@...nel.org, linux-bluetooth@...r.kernel.org, 
	linux-kernel@...r.kernel.org, luiz.dentz@...il.com, luiz.von.dentz@...el.com, 
	marcel@...tmann.org, netdev@...r.kernel.org, pabeni@...hat.com, 
	syzkaller-bugs@...glegroups.com, verdre@...d.nl
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Write in __hci_acl_create_connection_sync

syzbot has bisected this issue to:

commit 456561ba8e495e9320c1f304bf1cd3d1043cbe7b
Author: Jonas Dreßler <verdre@...d.nl>
Date:   Tue Feb 6 11:08:13 2024 +0000

    Bluetooth: hci_conn: Only do ACL connections sequentially

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=154f8550180000
start commit:   b1d3a0e70c38 Add linux-next specific files for 20240208
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=174f8550180000
console output: https://syzkaller.appspot.com/x/log.txt?x=134f8550180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=bb693ba195662a06
dashboard link: https://syzkaller.appspot.com/bug?extid=3f0a39be7a2035700868
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11d95147e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=107c2d8fe80000

Reported-by: syzbot+3f0a39be7a2035700868@...kaller.appspotmail.com
Fixes: 456561ba8e49 ("Bluetooth: hci_conn: Only do ACL connections sequentially")

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