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 B0F9030F81D; Mon, 13 Oct 2025 15:05:58 +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=1760367958; cv=none; b=ZlCw3AKLznP+zlwYto74WZEau2TQVnUU+I9pNzvEEz9rsW7mSs9yRwaFFptlXGIa4HPQ0Yj3a2BRJhdbEHP0k+Hv0ec2calKrcUtUkZqA9XQDrykTGO+//nUEVIuE7bIyoOelHPqTndEvsBVmWoc+K3uJUaLb30EvRMkqHqi2HE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760367958; c=relaxed/simple; bh=h3RcrkUnV2HYi000SegIAWOGeTuioxaiCXmew4U1eLo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=R8RH9Bou5TcdIJegX/IABY1uVYuD3FURwvDZvEmS3ur4XAA0ml8U4ebjzwZU2zrqhPvGPuAeLPpRnNDJEUOc05gWXB6qubgUwzZ2WGlr/DvdWqebJco6e7/l38Tcg4hPTNh+K+bhjjbzX9s1eblChpgSsFaYzYYdQ+lCejJmJ/s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Dz6QE3/K; 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="Dz6QE3/K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 40072C4CEE7; Mon, 13 Oct 2025 15:05:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760367958; bh=h3RcrkUnV2HYi000SegIAWOGeTuioxaiCXmew4U1eLo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Dz6QE3/KihNFgvIptnPg7sGE4E6IqwBn5BypHXFYfE1lMAOv3Xb38+npaGsCxNvB1 3TbFsla4+aQwuy6bOIAon7+x73P5y7BKhERzuDxeCTQkkrqEhniBW9Arlgrzf3Ti7N 8ANlBkaf/4di9w/vTZ8fS0QZPqTHDlJBKpnoJmw8= 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 6.6 192/196] bus: fsl-mc: Check return value of platform_get_resource() Date: Mon, 13 Oct 2025 16:46:23 +0200 Message-ID: <20251013144322.250915238@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013144315.184275491@linuxfoundation.org> References: <20251013144315.184275491@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: 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 @@ -1103,6 +1103,9 @@ 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;