From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754772AbbLIJlQ (ORCPT ); Wed, 9 Dec 2015 04:41:16 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:45431 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754743AbbLIJlN (ORCPT ); Wed, 9 Dec 2015 04:41:13 -0500 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Dan Carpenter , Greg Kroah-Hartman , Luis Henriques Subject: [PATCH 3.16.y-ckt 092/126] devres: fix a for loop bounds check Date: Wed, 9 Dec 2015 09:37:42 +0000 Message-Id: <1449653896-5236-93-git-send-email-luis.henriques@canonical.com> In-Reply-To: <1449653896-5236-1-git-send-email-luis.henriques@canonical.com> References: <1449653896-5236-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.16 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.7-ckt21 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter commit 1f35d04a02a652f14566f875aef3a6f2af4cb77b upstream. The iomap[] array has PCIM_IOMAP_MAX (6) elements and not DEVICE_COUNT_RESOURCE (16). This bug was found using a static checker. It may be that the "if (!(mask & (1 << i)))" check means we never actually go past the end of the array in real life. Fixes: ec04b075843d ('iomap: implement pcim_iounmap_regions()') Signed-off-by: Dan Carpenter Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman Signed-off-by: Luis Henriques --- lib/devres.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/devres.c b/lib/devres.c index f562bf6ff71d..eaa04de41e42 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -425,7 +425,7 @@ void pcim_iounmap_regions(struct pci_dev *pdev, int mask) if (!iomap) return; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + for (i = 0; i < PCIM_IOMAP_MAX; i++) { if (!(mask & (1 << i))) continue;