From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:27850 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755143AbbJ1F1K (ORCPT ); Wed, 28 Oct 2015 01:27:10 -0400 From: Sasha Levin To: stable@vger.kernel.org, stable-commits@vger.kernel.org Cc: Minfei Huang , tony.luck@intel.com, wangnan0@huawei.com, david.vrabel@citrix.com, Thomas Gleixner , Sasha Levin Subject: [added to the 3.18 stable tree] x86/mm: Initialize pmd_idx in page_table_range_init_count() Date: Wed, 28 Oct 2015 01:21:54 -0400 Message-Id: <1446009925-26739-18-git-send-email-sasha.levin@oracle.com> In-Reply-To: <1446009925-26739-1-git-send-email-sasha.levin@oracle.com> References: <1446009925-26739-1-git-send-email-sasha.levin@oracle.com> Sender: stable-owner@vger.kernel.org List-ID: From: Minfei Huang This patch has been added to the 3.18 stable tree. If you have any objections, please let us know. =============== [ Upstream commit 9962eea9e55f797f05f20ba6448929cab2a9f018 ] The variable pmd_idx is not initialized for the first iteration of the for loop. Assign the proper value which indexes the start address. Fixes: 719272c45b82 'x86, mm: only call early_ioremap_page_table_range_init() once' Signed-off-by: Minfei Huang Cc: tony.luck@intel.com Cc: wangnan0@huawei.com Cc: david.vrabel@citrix.com Reviewed-by: yinghai@kernel.org Link: http://lkml.kernel.org/r/1436703522-29552-1-git-send-email-mhuang@redhat.com Signed-off-by: Thomas Gleixner Signed-off-by: Sasha Levin --- arch/x86/mm/init_32.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index c8140e1..c23ab1e 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -137,6 +137,7 @@ page_table_range_init_count(unsigned long start, unsigned long end) vaddr = start; pgd_idx = pgd_index(vaddr); + pmd_idx = pmd_index(vaddr); for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd_idx++) { for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); -- 2.1.4