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Sat, 20 Jun 2026 06:11:57 -0700 (PDT) From: Karthikeyan KS To: andrew@codeconstruct.com.au Cc: joel@jms.id.au, andrew@aj.id.au, Kees Cook , linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH v6] soc: aspeed: lpc-snoop: Fix usercopy overflow in snoop_file_read Date: Sat, 20 Jun 2026 13:11:50 +0000 Message-ID: <20260620131150.184838-1-karthiproffesional@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <033f2657ae6a94ad13d22f717a2900afb75d892d.camel@codeconstruct.com.au> References: <033f2657ae6a94ad13d22f717a2900afb75d892d.camel@codeconstruct.com.au> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, 2026-06-17 at 13:10 +0000, Andrew Jeffery wrote: > Can you confirm you have tested on hardware a backport of this > patch to your BSP kernel? Not until yesterday, done now. Backported the fix to the BSP kernel (5.4.x) on the AST2600 BMC where the original failure was observed. Tested under continuous host reboot cycles with concurrent userspace reads on /dev/aspeed-lpc-snoop0. no panic, no usercopy splat. Same workload on the unpatched BSP reproduced reliably. Thanks, Karthikeyan