From: Vadim Fedorenko <vadim.fedorenko@linux.dev>
To: Miaoqian Lin <linmq006@gmail.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Thomas Gleixner <tglx@linutronix.de>,
Grygorii Strashko <grygorii.strashko@ti.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: Re: [PATCH] net: ethernet: ti: Prevent divide-by-zero in cpts_calc_mult_shift()
Date: Thu, 28 Aug 2025 13:05:55 +0100 [thread overview]
Message-ID: <11d46e56-b8d9-4776-9969-d3767d8cda41@linux.dev> (raw)
In-Reply-To: <20250828092224.46761-1-linmq006@gmail.com>
On 28/08/2025 10:22, Miaoqian Lin wrote:
> cpts_calc_mult_shift() has a potential divide-by-zero in this line:
>
> do_div(maxsec, freq);
>
> due to the fact that clk_get_rate() can return zero in certain error
> conditions.
Have you seen this happening in the real environment, or is it just
analysis of the code? I don't see a reason for these "certain error
conditions" to happen...
next prev parent reply other threads:[~2025-08-28 17:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-28 9:22 [PATCH] net: ethernet: ti: Prevent divide-by-zero in cpts_calc_mult_shift() Miaoqian Lin
2025-08-28 9:28 ` Greg Kroah-Hartman
2025-08-28 12:05 ` Vadim Fedorenko [this message]
2025-08-28 12:38 ` 林妙倩
2025-08-28 13:01 ` Vadim Fedorenko
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