From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1162942AbdD0P5B (ORCPT ); Thu, 27 Apr 2017 11:57:01 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:47331 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1033230AbdD0PxU (ORCPT ); Thu, 27 Apr 2017 11:53:20 -0400 From: Laurent Dufour To: paulmck@linux.vnet.ibm.com, peterz@infradead.org, akpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com, mhocko@kernel.org, dave@stgolabs.net, jack@suse.cz Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com, npiggin@gmail.com, bsingharora@gmail.com Subject: [RFC v3 09/17] mm/spf: Fix fe.sequence init in __handle_mm_fault() Date: Thu, 27 Apr 2017 17:52:48 +0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1493308376-23851-1-git-send-email-ldufour@linux.vnet.ibm.com> References: <1493308376-23851-1-git-send-email-ldufour@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17042715-0020-0000-0000-00000354C8E4 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17042715-0021-0000-0000-0000417A6E93 Message-Id: <1493308376-23851-10-git-send-email-ldufour@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-04-27_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1704270259 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org __handle_mm_fault() calls handle_pte_fault which requires the sequence field of the fault_env to be initialized. Signed-off-by: Laurent Dufour --- mm/memory.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory.c b/mm/memory.c index 458f579feb6f..f8afd52f0d34 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3694,6 +3694,7 @@ static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address, vmf.pmd = pmd_alloc(mm, pud, address); if (!vmf.pmd) return VM_FAULT_OOM; + vmf.sequence = raw_read_seqcount(&vma->vm_sequence); if (pmd_none(*vmf.pmd) && transparent_hugepage_enabled(vma)) { int ret = create_huge_pmd(&vmf); if (!(ret & VM_FAULT_FALLBACK)) -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f199.google.com (mail-pf0-f199.google.com [209.85.192.199]) by kanga.kvack.org (Postfix) with ESMTP id 31BB76B0343 for ; Thu, 27 Apr 2017 11:53:24 -0400 (EDT) Received: by mail-pf0-f199.google.com with SMTP id e16so29210885pfj.15 for ; Thu, 27 Apr 2017 08:53:24 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. 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Violators will be prosecuted for from ; Thu, 27 Apr 2017 16:53:17 +0100 From: Laurent Dufour Subject: [RFC v3 09/17] mm/spf: Fix fe.sequence init in __handle_mm_fault() Date: Thu, 27 Apr 2017 17:52:48 +0200 In-Reply-To: <1493308376-23851-1-git-send-email-ldufour@linux.vnet.ibm.com> References: <1493308376-23851-1-git-send-email-ldufour@linux.vnet.ibm.com> Message-Id: <1493308376-23851-10-git-send-email-ldufour@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: paulmck@linux.vnet.ibm.com, peterz@infradead.org, akpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com, mhocko@kernel.org, dave@stgolabs.net, jack@suse.cz Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com, npiggin@gmail.com, bsingharora@gmail.com __handle_mm_fault() calls handle_pte_fault which requires the sequence field of the fault_env to be initialized. Signed-off-by: Laurent Dufour --- mm/memory.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory.c b/mm/memory.c index 458f579feb6f..f8afd52f0d34 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3694,6 +3694,7 @@ static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address, vmf.pmd = pmd_alloc(mm, pud, address); if (!vmf.pmd) return VM_FAULT_OOM; + vmf.sequence = raw_read_seqcount(&vma->vm_sequence); if (pmd_none(*vmf.pmd) && transparent_hugepage_enabled(vma)) { int ret = create_huge_pmd(&vmf); if (!(ret & VM_FAULT_FALLBACK)) -- 2.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org