From nobody Sat Oct 4 08:14:04 2025 Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [160.30.148.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 66AE831AF1D for ; Tue, 19 Aug 2025 09:25:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=160.30.148.34 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755595557; cv=none; b=BlIUdwHQa8UufdWuiDNwzH3lffLtaVcuORhlsf2zJHp/FQBaL1UjSHUN7rR0vQ+hhCzqHe0dyDiNx+se8HTQ2MQADY2fb9cvxV9ePTVpZKeEeoJlEDJqjHJ3vgA3HrwqnYjD2h3SF3n3FfDHdLpF95mZ8xePqusSZqMj30Bch7g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755595557; c=relaxed/simple; bh=z/Zo0uVMOkZx3+nxUfBN34AH2w2JXvRGXA8IHP/N2aM=; h=Date:Message-ID:Mime-Version:From:To:Cc:Subject:Content-Type; b=FM3EedIEMIpbBKWTe6UN8ANq6PfmsDQ+4REz3ltdHc6CgM4CFida0nrRw7aYdNu7ZBDFqBI/tDRpuwhWa9C7HwpC/sAVorDkFDxawxI/vg8LMC4pDDt3PDSdd9pi4dLi2OT+iYBgtQXqtgwMJ/BMHazIdmMftkSL45d5IYduGnA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn; spf=pass smtp.mailfrom=zte.com.cn; arc=none smtp.client-ip=160.30.148.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zte.com.cn Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4c5khn5n3Mz6G42S; Tue, 19 Aug 2025 17:25:45 +0800 (CST) Received: from xaxapp01.zte.com.cn ([10.88.99.176]) by mse-fl2.zte.com.cn with SMTP id 57J9POZx082163; Tue, 19 Aug 2025 17:25:24 +0800 (+08) (envelope-from zhang.enpei@zte.com.cn) Received: from mapi (xaxapp05[null]) by mapi (Zmail) with MAPI id mid32; Tue, 19 Aug 2025 17:25:26 +0800 (CST) Date: Tue, 19 Aug 2025 17:25:26 +0800 (CST) X-Zmail-TransId: 2afc68a44306ffffffffbba-845b4 X-Mailer: Zmail v1.0 Message-ID: <20250819172526465q0DlaK4mMznBXD0SIjXKm@zte.com.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 From: To: Cc: , , , , , , , , Subject: =?UTF-8?B?W1BBVENIXSBkcm0vbWVkaWF0ZWs6IG10a19kcm1fZHJ2OiBzd2l0Y2ggdG8gdXNlIGRldm1fa21lbWR1cF9hcnJheSgp?= X-MAIL: mse-fl2.zte.com.cn 57J9POZx082163 X-TLS: YES X-SPF-DOMAIN: zte.com.cn X-ENVELOPE-SENDER: zhang.enpei@zte.com.cn X-SPF: None X-SOURCE-IP: 10.5.228.133 unknown Tue, 19 Aug 2025 17:25:45 +0800 X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 68A44319.002/4c5khn5n3Mz6G42S Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Zhang Enpei Use devm_kmemdup_array() to avoid multiplication or possible overflows. Signed-off-by: Zhang Enpei --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/media= tek/mtk_drm_drv.c index d5e6bab36414..e700c0f0a3a2 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -1003,7 +1003,8 @@ static int mtk_drm_of_ddp_path_build_one(struct devic= e *dev, enum mtk_crtc_path return -EINVAL; } - final_ddp_path =3D devm_kmemdup(dev, temp_path, idx * sizeof(temp_p= ath[0]), GFP_KERNEL); + final_ddp_path =3D devm_kmemdup_array(dev, temp_path, idx, + sizeof(*temp_path), GFP_KERNEL); if (!final_ddp_path) return -ENOMEM; --=20 2.25.1