From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933042AbeCMRDx (ORCPT ); Tue, 13 Mar 2018 13:03:53 -0400 Received: from g4t3427.houston.hpe.com ([15.241.140.73]:34504 "EHLO g4t3427.houston.hpe.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932303AbeCMRDu (ORCPT ); Tue, 13 Mar 2018 13:03:50 -0400 From: Toshi Kani To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com Cc: bp@alien8.de, luto@kernel.org, gratian.crisan@ni.com, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] x86/mm: vmalloc_fault fix for CONFIG_HUGETLBFS off Date: Tue, 13 Mar 2018 11:03:45 -0600 Message-Id: <20180313170347.3829-1-toshi.kani@hpe.com> X-Mailer: git-send-email 2.14.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Gratian Crisan reported that vmalloc_fault() crashes when CONFIG_HUGETLBFS is not set since the function inadvertently uses pXn_huge(), which always return 0 in this case. [1] ioremap() does not depend on CONFIG_HUGETLBFS. Patch 01 fixes the issue in vmalloc_fault(). Patch 02 is a clean-up for vmalloc_fault(). [1] https://lkml.org/lkml/2018/3/8/1281 --- Toshi Kani (2): 1/2 x86/mm: fix vmalloc_fault to use pXd_large 2/2 x86/mm: remove pointless checks in vmalloc_fault --- arch/x86/mm/fault.c | 62 +++++++++++++++++------------------------------------ 1 file changed, 20 insertions(+), 42 deletions(-)