From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from youngberry.canonical.com ([91.189.89.112]:43188 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753410AbbJTVgj (ORCPT ); Tue, 20 Oct 2015 17:36:39 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Minfei Huang , tony.luck@intel.com, wangnan0@huawei.com, david.vrabel@citrix.com, Thomas Gleixner , Kamal Mostafa Subject: [PATCH 3.13.y-ckt 67/85] x86/mm: Initialize pmd_idx in page_table_range_init_count() Date: Tue, 20 Oct 2015 14:35:23 -0700 Message-Id: <1445376941-7046-68-git-send-email-kamal@canonical.com> In-Reply-To: <1445376941-7046-1-git-send-email-kamal@canonical.com> References: <1445376941-7046-1-git-send-email-kamal@canonical.com> Sender: stable-owner@vger.kernel.org List-ID: 3.13.11-ckt28 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Minfei Huang commit 9962eea9e55f797f05f20ba6448929cab2a9f018 upstream. 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: Kamal Mostafa --- 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 4287f1f..948e91b 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); -- 1.9.1