From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f197.google.com (mail-pf1-f197.google.com [209.85.210.197]) by kanga.kvack.org (Postfix) with ESMTP id 6E3CB6B0005 for ; Wed, 1 Aug 2018 09:08:17 -0400 (EDT) Received: by mail-pf1-f197.google.com with SMTP id j15-v6so6625246pfi.10 for ; Wed, 01 Aug 2018 06:08:17 -0700 (PDT) Received: from mga06.intel.com (mga06.intel.com. [134.134.136.31]) by mx.google.com with ESMTPS id j135-v6si18107384pfd.207.2018.08.01.06.08.16 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Aug 2018 06:08:16 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCH] ia64: Make stack VMA anonymous Date: Wed, 1 Aug 2018 16:08:01 +0300 Message-Id: <20180801130801.30095-1-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Linus Torvalds Cc: Dmitry Vyukov , Oleg Nesterov , Andrea Arcangeli , Tony Luck , linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" IA64 allocates stack in a custom way. Stack has to be marked as anonymous otherwise the process will be killed with SIGBUS on the first access to the stack. Add missing vma_set_anonymous(). Signed-off-by: Kirill A. Shutemov Reported-by: Tony Luck Fixes: bfd40eaff5ab ("mm: fix vma_is_anonymous() false-positives") --- arch/ia64/mm/init.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index e6c6dfd98de2..99044db28040 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -116,6 +116,7 @@ ia64_init_addr_space (void) */ vma = vm_area_alloc(current->mm); if (vma) { + vma_set_anonymous(vma); vma->vm_start = current->thread.rbs_bot & PAGE_MASK; vma->vm_end = vma->vm_start + PAGE_SIZE; vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT; -- 2.18.0