From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f70.google.com (mail-pl0-f70.google.com [209.85.160.70]) by kanga.kvack.org (Postfix) with ESMTP id 0574F6B000A for ; Thu, 12 Jul 2018 10:56:43 -0400 (EDT) Received: by mail-pl0-f70.google.com with SMTP id s3-v6so17448333plp.21 for ; Thu, 12 Jul 2018 07:56:42 -0700 (PDT) Received: from mga14.intel.com (mga14.intel.com. [192.55.52.115]) by mx.google.com with ESMTPS id w20-v6si13074887pgf.434.2018.07.12.07.56.41 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Jul 2018 07:56:41 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCHv2 0/2] Fix crash due to vma_is_anonymous() false-positives Date: Thu, 12 Jul 2018 17:56:24 +0300 Message-Id: <20180712145626.41665-1-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Dmitry Vyukov , Oleg Nesterov , Andrea Arcangeli , linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Fix crash found by syzkaller. The fix allows to remove ->vm_ops checks. v2: - Catch few more cases where we need to initialize ->vm_ops: + nommu; + ia64; - Make sure that we initialize ->vm_ops even if ->mmap failed. We need ->vm_ops in error path too. Kirill A. Shutemov (2): mm: Fix vma_is_anonymous() false-positives mm: Drop unneeded ->vm_ops checks arch/ia64/kernel/perfmon.c | 1 + arch/ia64/mm/init.c | 2 ++ drivers/char/mem.c | 1 + fs/binfmt_elf.c | 2 +- fs/exec.c | 1 + fs/hugetlbfs/inode.c | 1 + fs/kernfs/file.c | 20 +------------------- fs/proc/task_mmu.c | 2 +- include/linux/mm.h | 5 ++++- kernel/events/core.c | 2 +- kernel/fork.c | 2 +- mm/gup.c | 2 +- mm/hugetlb.c | 2 +- mm/khugepaged.c | 4 ++-- mm/memory.c | 12 ++++++------ mm/mempolicy.c | 10 +++++----- mm/mmap.c | 25 ++++++++++++++++++------- mm/mremap.c | 2 +- mm/nommu.c | 13 ++++++++++--- mm/shmem.c | 1 + mm/util.c | 12 ++++++++++++ 21 files changed, 72 insertions(+), 50 deletions(-) -- 2.18.0