From patchwork Wed Oct 16 20:06:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gax-c X-Patchwork-Id: 13838849 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 B28D2D2A555 for ; Wed, 16 Oct 2024 20:16:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=7SMEfMlW/C27udljXPMs/mrFr0o7yBc0XZRSqXr/gI0=; b=EcobM/P3F8Rvsn Tgvw8ZDenHRhb/7Gw/6cq8FHQKZBtgzKIMN2+uujtvjx9UOCgTdMrEZlTdq0YcmYvHQXVhxbkCldT D9DPU5neCZhp0Kz94OAygtOegfS8JAz4sWCcIKjPFsG/Z+rHWZQeNkuExO4u6YPLIhlEcLbXBsX4q 191WI9MbMDwrf92WuI+oVUeHgU9ikt1iUNdFwnasu+CNU8RBS4oITTNiJZzgSxA55ilZHz9lwPcJE WUf43pLzQ/mON1c5ueg46+1xdqappJEcoPcnrJcsHjiqwMoBfMfP4NaeJV6tTgWS35mh26uZRcPYo eOAzPycoDRN5CGv/n24Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t1ARL-0000000Cuzg-0ksi; Wed, 16 Oct 2024 20:16:15 +0000 Received: from mail-qk1-x742.google.com ([2607:f8b0:4864:20::742]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t1AJa-0000000CtvO-3AAi; Wed, 16 Oct 2024 20:08:24 +0000 Received: by mail-qk1-x742.google.com with SMTP id af79cd13be357-7ac83a98e5eso18066185a.0; Wed, 16 Oct 2024 13:08:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1729109293; x=1729714093; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=xo/VBxOKFH/TmGJuUnZWn7QS7QFDBk9dtLuBtP6fhKE=; b=neQQbJrLiOTKGzL7EQkNu9oWdyM55tlCy00vHNlQIT+lueNiVIMO+T/MzTbhF1YfaU 1p7aR6/PELzTVbZ/eLXE3uDfOqMqfqmZ70xhiqSBp3VWDvw4WYbk8cQOqFNAlMOP9d0S leqkENHFA5ohsaXP8RlqPT/LQrmylDvFV9I2HYTYRXEAQX3VcxKTc/l5mZV8USQo+rV/ 1Haf/qVHfidogeiJZsjlqis8Pr1lQurhitjUVPJM9ZA743ZlnigGyYXfbsiMgD1meWAW +KGtqTQHWPw4deccH+pGgLO8DflMuNciDhCS9K3QrsUy9oMexBB/7w6UN1Utqb2vKHoO hRkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729109293; x=1729714093; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=xo/VBxOKFH/TmGJuUnZWn7QS7QFDBk9dtLuBtP6fhKE=; b=UrQPos7JWChiGxsiGGUWBqfrKhAn0NK0w0COEfLPiCw7VCPgg1upezAkLS/gKMsNs3 Lwe519fOBk/GMtwOxs6JElO9pw9Z5HWQNoAOOQ3SZ4rHttpVb6gDh7iNfZxJ2BjkDbLC F0KN8cdUFzP0trZDz5jtGZJacbqN0YG5V7qMXBlUP6rhfuidnbEYzpRwSm5OxRXIKfmi Jn8qfjcvExOksex6fhhiT6AUNp5LKYRmaJuh2ZrGxq/xfcJ+Up2J44YktyWdZ0WwCbSC CaW/AQFhIkhOYAQAX2OgfHiet51copjXnkMP8Gsft70RCYGJa85qNLN1DQnlhDspIxc/ 1IjQ== X-Forwarded-Encrypted: i=1; AJvYcCV2uL34USg/CJOxRZ7vb/rinh2e+x07Oxs7blcHaR3VARDylOINeMr1ES/CLgAa5xPptAvVR5jFXmkwW3Gqi+hu@lists.infradead.org, AJvYcCVqOFVFRiLZBJHKytpLD8JOFI73Zw3y4/tynogD6+YuaEqBPHMeVBBXING58/1x1dRJF2g20NFQY1Jjx9Uyuc8=@lists.infradead.org X-Gm-Message-State: AOJu0Yz297sCwrDA2veqNnr0j+pBQL7CZZmuksCQSRK+O5TO6LHl8vFj DZvl7AAt5unYgRwuOtsw5lGR1AukwDYlmBxoYITiYsY+BPa/lZTw X-Google-Smtp-Source: AGHT+IGqzpMWnAtWSKXsmhZf+cVv4uS+uDJF6vqc9SzgpRrXL8Am/lH5oizptIoGSFk3X614I1khTQ== X-Received: by 2002:a05:620a:3181:b0:7a6:6b97:4da2 with SMTP id af79cd13be357-7b14d4f6069mr131156685a.11.1729109293178; Wed, 16 Oct 2024 13:08:13 -0700 (PDT) Received: from localhost.localdomain (mobile-130-126-255-54.near.illinois.edu. [130.126.255.54]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7b136397252sm223113285a.80.2024.10.16.13.08.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Oct 2024 13:08:12 -0700 (PDT) From: Gax-c To: hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, markyao0591@gmail.com Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, chenyuan0y@gmail.com, zzjas98@gmail.com, Zichen Xie Subject: [PATCH] drm/rockchip: fix potential integer overflow in rockchip_gem_dumb_create() Date: Wed, 16 Oct 2024 15:06:55 -0500 Message-Id: <20241016200654.13472-1-zichenxie0106@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241016_130814_829630_312E8570 X-CRM114-Status: GOOD ( 11.11 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: Zichen Xie There may be potential integer overflow issue in rockchip_gem_dumb_create(). args->size is defined as "__u64" while args->pitch and args->height are both defined as "__u32". The result of "args->pitch * args->height" will be limited to "__u32" without correct casting. Cast it to "__u64" first to avoid possible integer overflow. Fixes: e3c4abdb3bc9 ("drm/rockchip: fix wrong pitch/size using on gem") Signed-off-by: Zichen Xie --- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index 93ed841f5dce..76dea12fe394 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -409,7 +409,7 @@ int rockchip_gem_dumb_create(struct drm_file *file_priv, * align to 64 bytes since Mali requires it. */ args->pitch = ALIGN(min_pitch, 64); - args->size = args->pitch * args->height; + args->size = (__u64)args->pitch * args->height; rk_obj = rockchip_gem_create_with_handle(file_priv, dev, args->size, &args->handle);