From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:42424 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751000AbdKSLGH (ORCPT ); Sun, 19 Nov 2017 06:06:07 -0500 Subject: Patch "extcon: palmas: Check the parent instance to prevent the NULL" has been added to the 4.4-stable tree To: rogerq@ti.com, alexander.levin@verizon.com, cw00.choi@samsung.com, gregkh@linuxfoundation.org Cc: , From: Date: Sun, 19 Nov 2017 12:05:42 +0100 Message-ID: <15110895429035@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled extcon: palmas: Check the parent instance to prevent the NULL to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: extcon-palmas-check-the-parent-instance-to-prevent-the-null.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Sun Nov 19 12:02:55 CET 2017 From: Roger Quadros Date: Thu, 8 Dec 2016 10:45:31 +0200 Subject: extcon: palmas: Check the parent instance to prevent the NULL From: Roger Quadros [ Upstream commit 9fe172b9be532acc23e35ba693700383ab775e66 ] extcon-palmas must be child of palmas and expects parent's drvdata to be valid. Check for non NULL parent drvdata and fail if it is NULL. Not doing so will result in a NULL pointer dereference later in the probe() parent drvdata is NULL (e.g. misplaced extcon-palmas node in device tree). Signed-off-by: Roger Quadros Signed-off-by: Chanwoo Choi Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/extcon/extcon-palmas.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/extcon/extcon-palmas.c +++ b/drivers/extcon/extcon-palmas.c @@ -190,6 +190,11 @@ static int palmas_usb_probe(struct platf struct palmas_usb *palmas_usb; int status; + if (!palmas) { + dev_err(&pdev->dev, "failed to get valid parent\n"); + return -EINVAL; + } + palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL); if (!palmas_usb) return -ENOMEM; Patches currently in stable-queue which might be from rogerq@ti.com are queue-4.4/extcon-palmas-check-the-parent-instance-to-prevent-the-null.patch