Re: [PATCH v4 0/3] serial: fix IRQ chain race, baud fallback, and uartclk overflow

[Greg KH]

On Thu, Sep 24, 2026 at 06:04:43AM +0000, Hui Peng wrote:
> This series fixes three bugs in the 8250 and serial core drivers:
> 
> 1. Hold hash_mutex across IRQ chain lookup, linking, and error-path
>    unlinking in serial_link_irq_chain() to prevent a use-after-free race
>    with concurrent serial_unlink_irq_chain().
> 2. Allow a third loop iteration (try < 3) in uart_get_baud_rate() so that
>    when both the requested and old baud rates are out of range and try == 1
>    clips the rate into termios, the clipped baud rate is evaluated and
>    returned on try == 2 instead of returning 0 and causing a divide-by-zero
>    in uart_get_divisor().
> 3. Reject baud_base > UINT_MAX / 16 in uart_set_info() alongside the
>    uartclk == 0 check so that multiplying baud_base by 16 cannot wrap
>    around in 32-bit unsigned arithmetic to a small non-zero uartclk.

You only sent 2 patches in this series :(

Where is patch 3/3?

thanks,

greg k-h