linux-kernel - Re: [syzbot] KASAN: slab-out-of-bounds Read in add_adv_patterns

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Message-ID: <CACT4Y+aydumbVJARxkeQuD5k8jowUwOehfQ9CEw8Uq+boOunUA@mail.gmail.com>
Date:   Thu, 12 May 2022 15:04:46 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+3ed6361bf59830ca9138@...kaller.appspotmail.com>
Cc:     apusaka@...omium.org, dan.carpenter@...cle.com,
        davem@...emloft.net, finanzas1@...isticaenlinea.net,
        hdanton@...a.com, howardchung@...gle.com, johan.hedberg@...il.com,
        johan.hedberg@...el.com, kuba@...nel.org,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        luiz.dentz@...il.com, marcel@...tmann.org, mcchou@...omium.org,
        mmandlik@...omium.org, netdev@...r.kernel.org, sashal@...nel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: slab-out-of-bounds Read in add_adv_patterns_monitor

On Sat, 20 Mar 2021 at 09:27, syzbot
<syzbot+3ed6361bf59830ca9138@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit b4a221ea8a1f890b50838ef389d016c7ff280abc
> Author: Archie Pusaka <apusaka@...omium.org>
> Date:   Fri Jan 22 08:36:11 2021 +0000
>
>     Bluetooth: advmon offload MSFT add rssi support
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14ef5ad6d00000
> start commit:   b491e6a7 net: lapb: Add locking to the lapb module
> git tree:       net
> kernel config:  https://syzkaller.appspot.com/x/.config?x=be33d8015c9de024
> dashboard link: https://syzkaller.appspot.com/bug?extid=3ed6361bf59830ca9138
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10628ae8d00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12964b80d00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: Bluetooth: advmon offload MSFT add rssi support

That commit touches the crashed function:

#syz fix: Bluetooth: advmon offload MSFT add rssi support