From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6C8CCCD4F26 for ; Sat, 20 Jun 2026 13:45:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=f1gzIf8fgHb7Ze/dJb/40ZOzqNvNSD6l3yJqC/XWnEI=; b=yTLEuuPgSwXJkTv+XYawpML58k fVUU4AbTHSrukx+Kq/Kj4qOb2xDqjja9CAMnUlc4LwcdFXwwMkbI4i5OTqqPY95LWjYGoOlfD+j0y vmBfbObUZ4eajI1l7q94yQCYnlHtEzC9Ev5GlUvKiaAz712B/VGBM5dGWSIomjEkW1jMcxTOy8TnO UMQrgAZYrJoN+7+6mE8QjD6kTeBpJ46LFIcNy+B+ZsVGvYfIVOcDJwFKqWfB/bDCSUQS9/ZC9IeT+ wWzKkRfRU6o0sMc6bJ2okWQR1mej6G0aXok0PVI4xN58yNgReCJQvDK5gxQl7x2Aj7oPxB7IDLQ4x pepnLXnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wavUQ-00000003Ncd-3PGr; Sat, 20 Jun 2026 13:12:02 +0000 Received: from mail-pl1-x632.google.com ([2607:f8b0:4864:20::632]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wavUN-00000003NcG-3cFc for linux-arm-kernel@lists.infradead.org; Sat, 20 Jun 2026 13:12:01 +0000 Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-2c0c1e0d00bso32340865ad.0 for ; Sat, 20 Jun 2026 06:11:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1781961118; x=1782565918; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=f1gzIf8fgHb7Ze/dJb/40ZOzqNvNSD6l3yJqC/XWnEI=; b=EXAw0kpeYZMCjcCsrnxPwpJbqNvVHOqMMxP4JpTB8iAMbDpXMF+7LqWkrQzJfLf+sS M45/vlCNfE4ZzRjKPv5D5sXq74LdZY9SiqH+X/sUu75+0OrhcKWw/D5zGNzu7IK4i4jw +sFoyCXpy5Ogfes4iJkIllkZjk206V8WVCTiUkbppIRnb3SbJqkibe3kytL3zcMgTZUt c8djwMlUCNsBznOzaBzIa7mWqdgUjHz1gTqrvN2fKKX8otMDlh2P+tSbwc/i7e8Tg6Fo F/oHV59xBQVdP5fq6NIgaOnRLi+SPGWTKPh5Umk1esYtZgvczp76OM7MzPCk1zfAmMgn ewUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781961118; x=1782565918; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=f1gzIf8fgHb7Ze/dJb/40ZOzqNvNSD6l3yJqC/XWnEI=; b=k/SNA5uqMk3SL7MMgGblNjSQIvq455mBuVYcCY1N1NnZc/rwn8iQBpKuTjAMykJW+I iskOJz2fG7uvMujev2Z2SObkkJ6ZNPQ3nFrHM2dnPex6GjFIrrk6FY2XviHBU+7UiV8V yTTBbeK86USF3tAO+exmRHi0rWtLvJkzf2H0mtQUQvjceJFy46gv8dselXLcb+wTMGbE bae5mZJdOKuuJmxHFOiEjBPDi+1CCUonrYANLGHzXQP4bB/ejfkmbheXH0SPfZXU/9r4 SGqCVCCf6lZ5EsjpmnldwlnTiJKDC4TWpkZI3jaqq5+jnEAsU6jcmlw3RkhTkASJAfIE sIrQ== X-Forwarded-Encrypted: i=1; AFNElJ/5Xd0cjTRZg8t/2QDo8fI0Ev3fUqmZCfxjrlIrrTLoHE+L/ypqrRQwRnXFQqAYKJr5YxrWG2seM6I0M6Yvf/AT@lists.infradead.org X-Gm-Message-State: AOJu0Yyier+HL10j9lZL1wGneUS2J03MjYGfW5mUrv8JGu7k1G5x/gRm vqe6Wj6KfE3yymTc6f+grEknfdJ+xaBVtLOhYF3IxlCUNxzNP6V/x42X X-Gm-Gg: AfdE7cneeLrP8nBHzfHnehn34ipIUz1IatvXp+IKHTCyjtIr8riUg0OsfsWKhzboWha vmG0o+YF3vd/4ySzqA1daMWgMSGVTmPJzZSExDF1jVX5T8Qtzn9X8bxy/ujevRrvT3S4zYGQEdy ncWmkpXbUnbCr3rohl246Ijr0gXEqd7n8WlepoDJCUJTy6nXnl18XN8Iqir4Gkmx0vhX/r07e5G O1STTxJKrC4ylNgzIjUD/HiGFAVq7Q9+1DbijNdYQVjsbJYpmYcW19UzvoJmnFkTbvCLK5/cyGn 0wgeXs2nUKnNGw9muaxB8RVx6d7sN5auenC1QIDXwF92G7ZMPmxuDzyh463WK+SX0AyONC/Q9HD YVZw4pJtg0cB6OHbGFheqk9FhUoovM7A2LL9t4G9KlAHKcTI0w3278+w5LuPJZWDBiPxXxKXC/w H6DzK0mbVS73Ih3FbHqqfXtvJrTg/fkSyH9ltctTRTv/0bIQ== X-Received: by 2002:a17:903:234c:b0:2bf:356f:4e0c with SMTP id d9443c01a7336-2c725ba685amr74009065ad.1.1781961118146; Sat, 20 Jun 2026 06:11:58 -0700 (PDT) Received: from LAPTOP-97G9G880.domain.name ([106.222.202.139]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c743bfea46sm23206645ad.69.2026.06.20.06.11.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); 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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260620_061159_932890_30CF9586 X-CRM114-Status: UNSURE ( 8.91 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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