From: Andrew Lunn <andrew@lunn.ch>
To: "Жамбакиев Радий Рикардинович" <r.zhambakiev@prosoftsystems.ru>
Cc: "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>,
"Denis Benato" <benato.denis96@gmail.com>,
"Jacob Keller" <jacob.e.keller@intel.com>,
"Petr Machata" <petrm@nvidia.com>,
"Uwe Kleine-König (The Capable Hub)"
<u.kleine-koenig@baylibre.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"lvc-project@linuxtesting.org" <lvc-project@linuxtesting.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [PATCH net 3/3] net: fealnx: allocate the card index from an IDA
Date: Thu, 24 Sep 2026 18:50:43 +0200 [thread overview]
Message-ID: <d5a25a0f-67a9-4431-9fa4-24e29730cb26@lunn.ch> (raw)
In-Reply-To: <20260924104231.110576-3-r.zhambakiev@prosoftsystems.ru>
On Thu, Sep 24, 2026 at 10:44:25AM +0000, Жамбакиев Радий Рикардинович wrote:
> From: Radiy Zhambakiev <r.zhambakiev@prosoftsystems.ru>
>
> card_idx is a static counter that is incremented on every probe.
> It can overflow and wrap to a negative value, which then indexes
> options[] and full_duplex[] out of bounds. Large values also no
> longer fit in the 12-byte boardname[] buffer.
Seems very theoretical. For something which is never going to happen,
please keep it KISS:
if (card_idx > 100000) {
dev_error(..., "Please stop doing that!");
return -ENODEV;
}
Andrew
---
pw-bot: cr
next prev parent reply other threads:[~2026-09-24 16:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-24 10:44 [PATCH net 1/3] net: fealnx: fix teardown order in remove Жамбакиев Радий Рикардинович
2026-09-24 10:44 ` [PATCH net 2/3] net: fealnx: disable the PCI device on remove and probe failure Жамбакиев Радий Рикардинович
2026-09-24 21:52 ` Francois Romieu
2026-09-24 10:44 ` [PATCH net 3/3] net: fealnx: allocate the card index from an IDA Жамбакиев Радий Рикардинович
2026-09-24 16:50 ` Andrew Lunn [this message]
2026-09-24 16:43 ` [PATCH net 1/3] net: fealnx: fix teardown order in remove Andrew Lunn
2026-09-28 12:31 ` Жамбакиев Радий Рикардинович
2026-09-24 21:51 ` Francois Romieu
2026-09-28 12:32 ` Жамбакиев Радий Рикардинович
2026-09-30 22:37 ` Francois Romieu
2026-09-25 10:46 ` netdev-bot+sashiko
2026-09-28 13:08 ` Жамбакиев Радий Рикардинович
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