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Subject: Re: [PATCH] Bluetooth: hci_vhci: Pin module for debugfs file
 operations
From: patchwork-bot+bluetooth@kernel.org
Message-Id: 
 <179155560901.812174.12507365136782263933.git-patchwork-notify@kernel.org>
Date: Fri, 09 Oct 2026 14:20:09 +0000
References: <20261008045413.465999-1-dungvn2345@gmail.com>
In-Reply-To: <20261008045413.465999-1-dungvn2345@gmail.com>
To: Bui Viet Dung <dungvn2345@gmail.com>
Cc: marcel@holtmann.org, luiz.dentz@gmail.com, ipravdin.official@gmail.com,
 pmenzel@molgen.mpg.de, linux-bluetooth@vger.kernel.org,
 linux-kernel@vger.kernel.org, stable@vger.kernel.org

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Thu,  8 Oct 2026 11:54:13 +0700 you wrote:
> An open debugfs file retains its file_operations pointer in the
> debugfs proxy state. However, force_suspend_fops, force_wakeup_fops,
> aosp_capable_fops, and force_devcoredump_fops have no .owner set to
> THIS_MODULE. As a result, full_proxy_open_regular() calls fops_get()
> which succeeds without taking a reference to the hci_vhci module.
> 
> When userspace opens any of these debugfs files and later closes
> the /dev/vhci file descriptor (triggering vhci_release() and
> debugfs file removal), the open debugfs file descriptor remains valid
> in userspace. Because the module refcount was not incremented,
> the hci_vhci module can be unloaded via delete_module (rmmod hci_vhci).
> 
> [...]

Here is the summary with links:
  - Bluetooth: hci_vhci: Pin module for debugfs file operations
    https://git.kernel.org/bluetooth/bluetooth-next/c/da8aab8ed08d

You are awesome, thank you!
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