From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E04C52580F2; Mon, 13 Oct 2025 15:45:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760370344; cv=none; b=hYiAJzGQZWuK6GGW+ejyMXNVfBuM14u92S5AqDXi7VoXmxhzHnV6dEJ5IG48ed/+X5eRogYZe5H3Uly82KqQ/QyU5GTOHsRVMjmtS5nT6XMVX2VJxLKTSwSERceOOZASq06PasAEiER0tWIB8go06ahKHD0Opc+9+6rLsmEys74= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760370344; c=relaxed/simple; bh=l7p+ZRR/Ho2/6iDy4PzppO/ZRs+5YXClQWdfs5ES20E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NdLtI6hD6D123q7HOfz5HwTeVu/D4YH17CzgJu8i3JA3vRgDJDzdxmwCo/APUEsHRkaX4HY003c/vAfdNBUm+qIDxjdHg5N6LL/kBKE17sa9y5CPbCnaEtGGa4v3zR9uYd3L1hQOKE6YYeZmwkc/kPaCQCQtgQuZ/EdMeKtpERc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Fscz9Z9E; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Fscz9Z9E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6DBC9C4CEE7; Mon, 13 Oct 2025 15:45:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760370343; bh=l7p+ZRR/Ho2/6iDy4PzppO/ZRs+5YXClQWdfs5ES20E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fscz9Z9E8aZIVPjUO32DRLi2Tk4PhhtiUkZCc04iDwoyPOaHs+YK8g2ZHc+GgE2KE zF+Y6PYW24bk5UAPKHTSGklrIEbTdDuWyll1tzw4G9vSHl7k+MQfz8GOZwseP3Z+RS FIVREreMOOlhJEb1Rlq038eo4NEg8tY25U/9IOcY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Salah Triki , Ioana Ciornei , Christophe Leroy Subject: [PATCH 6.17 556/563] bus: fsl-mc: Check return value of platform_get_resource() Date: Mon, 13 Oct 2025 16:46:57 +0200 Message-ID: <20251013144431.445433099@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013144411.274874080@linuxfoundation.org> References: <20251013144411.274874080@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 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Salah Triki commit 25f526507b8ccc6ac3a43bc094d09b1f9b0b90ae upstream. platform_get_resource() returns NULL in case of failure, so check its return value and propagate the error in order to prevent NULL pointer dereference. Fixes: 6305166c8771 ("bus: fsl-mc: Add ACPI support for fsl-mc") Cc: stable@vger.kernel.org Signed-off-by: Salah Triki Acked-by: Ioana Ciornei Link: https://lore.kernel.org/r/aKwuK6TRr5XNYQ8u@pc Signed-off-by: Christophe Leroy Signed-off-by: Greg Kroah-Hartman --- drivers/bus/fsl-mc/fsl-mc-bus.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -1104,6 +1104,9 @@ static int fsl_mc_bus_probe(struct platf * Get physical address of MC portal for the root DPRC: */ plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!plat_res) + return -EINVAL; + mc_portal_phys_addr = plat_res->start; mc_portal_size = resource_size(plat_res); mc_portal_base_phys_addr = mc_portal_phys_addr & ~0x3ffffff;