From nobody Mon Jun 8 09:48:29 2026 Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0912A3A1D01 for ; Wed, 3 Jun 2026 23:20:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780528842; cv=none; b=r5YJtGwnbA+aafdGzJn/NbMTf26F6izYd6ywXI89a/J7PWqiZP0BCZn3cDNso7P4HLEUy809SXRTS3M/1H5XbMm7EorfaQ2klCPj7i8fg2A4aBBC6QT7IixrZY/WVTdZ8x4/E29TTq2FNaIKr94lnNKrSlHISO2T0LBItBJevjU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780528842; c=relaxed/simple; bh=Ir8hnKmPNUz6/AcCthMcGFXyuoTZMOda4cgAaIj1WnI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=oVK5noWOSIoOtFbhGGE8cc9tAlWe87Qkpl9OEcaa5cJiew8uxqQtZASoM9p05DCxrGEL7UTZpkoQ8DdwM/d2814T227JsMHboZNqs2OjhBsOpUA6XFSgmEEyCvVb8p0Q53tJdEwis2Yo4EHr5RUn9mxD8OhVwxQZIixa3sqkiVo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=gGPXRY2A; arc=none smtp.client-ip=209.85.215.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gGPXRY2A" Received: by mail-pg1-f169.google.com with SMTP id 41be03b00d2f7-c8588f8fef3so36548a12.0 for ; Wed, 03 Jun 2026 16:20:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780528840; x=1781133640; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=bWTYjpykQOV7bU/EcROpV1dyr1vVf0XEGJ60Ypt0xgM=; b=gGPXRY2AkpfaIa3gty13I+ZGR2zlPolyeTSqmhwwxW305pDVB/6055GxghcCRWGE20 zct8yWy08X0GC2Fvq0+uCt6KrfFV9f8ZlK5/9TTRK1h5taZVpX7C1aC9HGUr8BvreEHG LJpp1pleOWlVQ/3OtA6vI0nfiPNmTLkqHEzJ1OE1TjpDl7+BSzEvD2gxCy6v06yoPnJs YIvI5RV4aNBx5LlCLB6Qwo/kaAVY+5i/jS6HqTWt24LDneQS1qFtZ4fjJS1CCjTIqqhZ rZdzX926wC3u44MCRhYCbmZlvRQbvmSNLcS12HRrswyGoWREyyrTGj4y6DXAxO41wQ0d GcSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780528840; x=1781133640; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=bWTYjpykQOV7bU/EcROpV1dyr1vVf0XEGJ60Ypt0xgM=; b=lXXbcn/66P2jbttiDw2ZNe6n60ZfhkWWXhjtj38F8dJW0zo/Dbmj3xQkKXc18fVOe0 A9VdgQkSWHCxGRSGRfbFFsnphAN+SMTmv8TDngc+xQK4wxa61yK8xAz0W/DYSylK5gdt 5hkOSGBxSSog9mz+b6RPMR6nQVZmlNM4ow05+n4p9+o1t8PsDCsswVbF5JHfu1bs1AJm 5Ca8PHHV3a4nn6breLajIAxphl6GfbR3TtwHHrm9HqYU7pSBcjMcnaost7INk3QXxANF n/pepdKEjP9JYbUxRCsAlXBgxpXxU1mKxp6q0aCY1g29rpLOUeQntT9mA0kgYSJ9o1yZ yQYw== X-Gm-Message-State: AOJu0Yw2Vx7Afx1jstddq26LAFoVdXk9bny68MuB1uqX2BkvTZrPp7rE 34/yjsWa9dX/yQh1WI1q4BEXoQxcBWO4KsubH/8Z3rtfHjQPYjCQGl5kIZRqEdPX X-Gm-Gg: Acq92OEOz9HZkDNxdNyBgFjgC+FSykzsrdwNRia7WW/jAFLiwUvjQdo/7bDosoGogv3 LM5FBZZTrs8MLH84FIs3vfm91XSfvf6M4/sChMY33aM2twwOKr+tAaNJ6gVAlOb601AA/jmmw+L qrNiW9wiOTB389hjhqj5a4LFdYakQ9EQzM/xdsRFMDM3y67bX81SioLoxWoZqV7NhdGwlmRu1vP wt0Bp4c5UcDslRlLctBRjs52GSJfoTELHo4zT7gWCt3F/X2vZIzGAkR7m/XzEHKAEzWd84ClHwL ib3trNo1JZ5RknFZWkKfdLDgBdXj2bXc2GtnSHKjBG2MtQ8WG3DdyL06YEIu+GakFTn9Z6gi2wr 90LrMl6yqLhHHr/7mYrznY7DjD2ecOVucojgcAEAjKh+aS/SIa2rPtsUqiPu0DbgYllWsEiEb7k S/nVX9Rz/sGBuac7NW1qbSmQy1LOJQ8aQus2n3kxUC1UovGPBPwLVTMKQ+C1zBeCfGlQOrNGzet q90ArMsOnjXKtX/SPw7engR4cv50r83iSkpoKZtl+uQqw== X-Received: by 2002:a05:6a21:1fc5:b0:3b4:65ad:b417 with SMTP id adf61e73a8af0-3b4977c1efamr5963861637.45.1780528839951; Wed, 03 Jun 2026 16:20:39 -0700 (PDT) Received: from ryzen ([2601:644:8000:5b5d:7285:c2ff:fe45:8a32]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c85df043223sm3124310a12.8.2026.06.03.16.20.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Jun 2026 16:20:39 -0700 (PDT) From: Rosen Penev To: linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Marek=20Beh=C3=BAn?= Subject: [PATCH] firmware: turris-mox-rwtm: fix fortify memcpy warning Date: Wed, 3 Jun 2026 16:20:22 -0700 Message-ID: <20260603232022.7550-1-rosenp@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Cast tmp to u8* instead of void* before pointer arithmetic to allow the fortified memcpy to correctly bounds-check the access. Using void* hides the underlying type and triggers: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter) The access is valid: tmp is __be32[17] (68 bytes), and we copy 66 bytes starting at offset 2. Fixes: eaa915c7b8da ("firmware: turris-mox-rwtm: add rrpc support") Assisted-by: Opencode:BigPickle Signed-off-by: Rosen Penev Acked-by: Marek Beh=C3=BAn --- drivers/firmware/turris-mox-rwtm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-m= ox-rwtm.c index 1eac9948148f..3a7d960ea480 100644 --- a/drivers/firmware/turris-mox-rwtm.c +++ b/drivers/firmware/turris-mox-rwtm.c @@ -286,7 +286,7 @@ static void mox_ecc_number_to_bin(void *dst, const u32 = *src) =20 cpu_to_be32_array(tmp, src, MOX_ECC_NUM_WORDS); =20 - memcpy(dst, (void *)tmp + 2, MOX_ECC_NUM_LEN); + memcpy(dst, (u8 *)tmp + 2, MOX_ECC_NUM_LEN); } =20 static void mox_ecc_public_key_to_bin(void *dst, u32 src_first, --=20 2.54.0