Re: [PATCH] Bluetooth: hci_core: Fix queuing rx_work while workqueue is drained

[patchwork-bot+bluetooth]

Hello:

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

On Fri, 23 Oct 2026 21:46:09 +0530 you wrote:
> hci_recv_frame() drops a frame unless HCI_UP or HCI_INIT is set, but the
> check is not synchronized with hci_dev_close_sync().  A driver can pass
> the check, then close clears HCI_UP, flushes rx_work and starts
> drain_workqueue(), and the late queue_work() of rx_work hits the
> draining workqueue:
> 
>   workqueue: cannot queue hci_rx_work on wq hci0
>   WARNING: kernel/workqueue.c:2352 at __queue_work+0x2c0/0x780
>   Call Trace:
>    queue_work_on+0xb2/0xc0
>    hci_recv_frame+0x18f/0x330
>    vhci_write+0x174/0x240
>    vfs_write+0x271/0x680
>    ksys_write+0x7c/0x110
> 
> [...]

Here is the summary with links:
  - Bluetooth: hci_core: Fix queuing rx_work while workqueue is drained
    https://git.kernel.org/bluetooth/bluetooth-next/c/63bcf9f4a40d

You are awesome, thank you!
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