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 27195412269; Sat, 12 Sep 2026 11:50:17 +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=1789213818; cv=none; b=LvAbxWY1nUaZR0+RC98hWpUUJ4umb9Kvpu4lxy82Q+nPidWMua1/Zx/QrcGmm1YgK5l4ECFj3wCB410OjGO5UaunM2m41ltQttSu6UqtUmjSkkEFiy2AqO7bw2Zx6zIMDZn8Nxy0muQKNx2AmiZgQy8uIITzBlcya5MN12DRx1U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789213818; c=relaxed/simple; bh=CQzvKcliKzjeFNN/V5lwQmjPmsrd/DKWsEROgMzJ6mA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CvZQ9tAdSjZbv01C55gZYb4zD75VPL2095Z/9y93kbqhVauYG4yiTFZlpO673ahZkcqZidffsmayHRzzp2qCAULGn270zIg6N7/V9713g3aO2mVhG28AmpBhi74ClescDPaOcvhG/h3kmelEPFz7EiviIAK/K9EPXESaf874Vtw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=k1xx8eGk; 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="k1xx8eGk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED94A1F000FF; Sat, 12 Sep 2026 11:50:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789213817; bh=emKW0NPVskgBFxq0cgLrktEqbxMxl9KtdTWLUmvO7AY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=k1xx8eGkmvW8zg/G5qhXa35zuOnR2dkzptkIzADmDjO4eejkZ8WopWzOHtYlk4gSm u/W97WvLDAKlKe7DpcvGiLw/OP2uHRD3lLnwryu9Hz5o3prk5WQYVnosIi9LGhuCS8 DaVw0kxT2BCIAL12poTlH4NkRy8dpReglJNmnl0k= 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 Subject: [PATCH 6.12 0200/1376] media: platform: mtk-mdp3: fix NULL deref on failed SCP lookup Date: Sat, 12 Sep 2026 08:43:46 +0200 Message-ID: <20260912065612.007365830@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.535295758@linuxfoundation.org> References: <20260912065607.535295758@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 90368323fb244da0504e3da37a182f8e89bcc3b9 upstream. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c @@ -313,6 +313,11 @@ static int mdp_probe(struct platform_dev 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);