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Date: Thu, 24 Sep 2026 08:42:35 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Hui Peng <benquike@gmail.com>
Cc: jirislaby@kernel.org, john.ogness@linutronix.de,
	ilpo.jarvinen@linux.intel.com, andriy.shevchenko@linux.intel.com,
	linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH v4 0/3] serial: fix IRQ chain race, baud fallback, and
 uartclk overflow
Message-ID: <2026092417-seducing-stank-af6d@gregkh>
References: <20260924060511.2364717-1-benquike@gmail.com>
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In-Reply-To: <20260924060511.2364717-1-benquike@gmail.com>

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