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[34.85.165.172]) by smtp.gmail.com with ESMTPSA id 00721157ae682-7b9ee9b22e2sm113515307b3.34.2026.04.26.06.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Apr 2026 06:17:09 -0700 (PDT) Date: Sun, 26 Apr 2026 09:17:08 -0400 From: Willem de Bruijn To: Tariq Toukan , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" Cc: Boris Pismenny , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Mark Bloch , Daniel Zahka , Willem de Bruijn , Cosmin Ratiu , Raed Salem , Rahul Rameshbabu , Dragos Tatulea , Kees Cook , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Gal Pressman Message-ID: In-Reply-To: <20260426083819.208937-2-tariqt@nvidia.com> References: <20260426083819.208937-1-tariqt@nvidia.com> <20260426083819.208937-2-tariqt@nvidia.com> Subject: Re: [PATCH net V2 1/2] net/mlx5e: psp: Fix invalid access on PSP dev registration fail Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Tariq Toukan wrote: > From: Cosmin Ratiu > > priv->psp->psp is initialized with the PSP device as returned by > psp_dev_create(). This could also return an error, in which case a > future psp_dev_unregister() will result in unpleasantness. > > Avoid that by using a local variable and only saving the PSP device when > registration succeeds. > Also apply some light refactoring of the functions managing the PSP > device in order to make them more readable/safe. This is generally discouraged as it obfuscates the fix. That said, the fix on its own makes sense. > In case psp_dev_create() fails, priv->psp and steering structs are left > in place, but they will be inert. The unchecked access of priv->psp in > mlx5e_psp_offload_handle_rx_skb() won't happen because without a PSP > device, there can be no SAs added and therefore no packets will be > successfully decrypted and be handed off to the SW handler. > > Fixes: 89ee2d92f66c ("net/mlx5e: Support PSP offload functionality") > Signed-off-by: Cosmin Ratiu > Reviewed-by: Dragos Tatulea > Signed-off-by: Tariq Toukan