linux-kernel - Re: [PATCH] net: liquidio: fix overflow in octeon_init_instr

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Message-Id: 
 <175820761475.2450229.3279973050187198984.git-patchwork-notify@kernel.org>
Date: Thu, 18 Sep 2025 15:00:14 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Alexey Nepomnyashih <sdl@...ct.ru>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org,
 stable@...r.kernel.org
Subject: Re: [PATCH] net: liquidio: fix overflow in octeon_init_instr_queue()

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Wed, 17 Sep 2025 15:30:58 +0000 you wrote:
> The expression `(conf->instr_type == 64) << iq_no` can overflow because
> `iq_no` may be as high as 64 (`CN23XX_MAX_RINGS_PER_PF`). Casting the
> operand to `u64` ensures correct 64-bit arithmetic.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Cc: stable@...r.kernel.org # v4.2+
> Fixes: f21fb3ed364b ("Add support of Cavium Liquidio ethernet adapters")
> Signed-off-by: Alexey Nepomnyashih <sdl@...ct.ru>
> 
> [...]

Here is the summary with links:
  - net: liquidio: fix overflow in octeon_init_instr_queue()
    https://git.kernel.org/netdev/net/c/cca7b1cfd7b8

You are awesome, thank you!
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