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Date:   Tue, 11 Aug 2020 08:50:13 +0200
From:   David Sterba <>
To:     syzbot <>
Subject: Re: KASAN: use-after-free Write in hci_conn_del

On Mon, Aug 10, 2020 at 08:35:08PM -0700, syzbot wrote:
> syzbot has bisected this issue to:
> commit 6a3c7f5c87854e948c3c234e5f5e745c7c553722
> Author: Nikolay Borisov <>
> Date:   Thu May 28 08:05:13 2020 +0000
>     btrfs: don't balance btree inode pages from buffered write path

This does not make sense wrt use-after-free in HCI, which is completely
unrelated subsystem.

The patch removes a call to function doing some potentially heavy work,
so this likely affects timing and making the bisection unreliable.

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