linux-kernel - Re: [PATCH] octeontx2-pf: fix "UBSAN: shift-out-of-bounds error"

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Message-ID: <75205c09-7adb-4770-b551-de3c4f7a2ab4@redhat.com>
Date: Mon, 29 Dec 2025 16:49:51 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Anshumali Gaur <agaur@...vell.com>, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Cc: Sunil Goutham <sgoutham@...vell.com>, Geetha sowjanya
 <gakula@...vell.com>, Subbaraya Sundeep <sbhatta@...vell.com>,
 hariprasad <hkelam@...vell.com>, Bharat Bhushan <bbhushan2@...vell.com>,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Christina Jacob <cjacob@...vell.com>
Subject: Re: [PATCH] octeontx2-pf: fix "UBSAN: shift-out-of-bounds error"

On 12/19/25 7:22 AM, Anshumali Gaur wrote:
> This patch ensures that the RX ring size (rx_pending) is not
> set below the permitted length. This avoids UBSAN
> shift-out-of-bounds errors when users passes small or zero
> ring sizes via ethtool -G.
> 
> Fixes: d45d8979840d ("octeontx2-pf: Add basic ethtool support")
> Signed-off-by: Anshumali Gaur <agaur@...vell.com>
> Change-Id: I6de6770dbc0dd952725ccd71ce521f801bc7b15b

Please strip the above tag in future submissions.

Thanks,

Paolo