From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 18A99387373; Sat, 17 Oct 2026 16:53:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792255997; cv=none; b=JI+xe5vpoIN6xgdhQDHBr2pkZHmlK3mAPQgEkEL8+vkTfMAZWuNJQikpQRiXO2Rt6M9Ahhv5/pXmpSqJh2hOVBZ4YFLqQXLCShqN8V0XL3hcIWlCVoTaZ0LW7IgDXXLJc2AMnKHWaVKcguqK7Zw2wEekZzshwjF8ks4/0RYeqto= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792255997; c=relaxed/simple; bh=9/J4NSyhEX0IbtSdUFf9MQqi+JDpXtYIRkgZo2jg6rs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MZejc9NBMy9TQJv+kXDF33quCmp5zg104cQ9+Ys8SQClBrwdifkEtk73a5lSZ3GGqLKiMa1vDzf7xEdYyAl+jxXcskEGysfyfWCHBUbNUIMq+/X31mBIxD9S/JQpXIP81Ed4Oz0/SYK6qC9KJsJ/xiIjDQK9A82q4JLniGwhZWQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YF9yFPqG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="YF9yFPqG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 689D81F000C4; Sat, 17 Oct 2026 16:53:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792255996; bh=q1nac6gxX4/76+XBQJ7y1KePibMlK+UJwPXkj6w42kQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=YF9yFPqGG5YqO7sWdbCH6Clie1DJxh1zDmo0V5dluEphOluEpCR7eghCuPkH4rjzM TVBjkEXeiCphVUbjd6XIEUmI6emxW65bdiz4eN1sUbkOcJBBnRHhBGHXLRFk0+aSj/ H0XJdwUCHKcpFjAbbdPxNuOssMxERx207tgk1ZZ0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Moudy Ho , Johan Hovold , Nicolas Dufresne , Hans Verkuil , Sasha Levin Subject: [PATCH 6.6 0090/1674] media: platform: mtk-mdp3: fix NULL deref on failed SCP lookup Date: Sat, 17 Oct 2026 17:39:22 +0200 Message-ID: <20261017160433.449358141@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160431.119607952@linuxfoundation.org> References: <20261017160431.119607952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold [ Upstream commit 90368323fb244da0504e3da37a182f8e89bcc3b9 ] Add the missing sanity check after looking up the SCP to avoid dereferencing a NULL-pointer in case its driver has not yet been bound. Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver") Cc: stable@vger.kernel.org # 6.1 Cc: Moudy Ho Signed-off-by: Johan Hovold Signed-off-by: Nicolas Dufresne Signed-off-by: Hans Verkuil [ Adapted NULL-check placement to the older direct platform_get_drvdata() lookup. ] Signed-off-by: Sasha Levin --- drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c index cc44be10fdb77..50d1458339343 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c @@ -215,6 +215,11 @@ static int mdp_probe(struct platform_device *pdev) goto err_destroy_clock_wq; } mdp->scp = platform_get_drvdata(mm_pdev); + if (!mdp->scp) { + ret = -EPROBE_DEFER; + goto err_destroy_clock_wq; + } + mdp->rproc_handle = scp_get_rproc(mdp->scp); dev_dbg(&pdev->dev, "MDP rproc_handle: %pK", mdp->rproc_handle); -- 2.53.0