From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
Received: from mail-pl0-f72.google.com (mail-pl0-f72.google.com [209.85.160.72])
	by kanga.kvack.org (Postfix) with ESMTP id 472556B0009
	for <linux-mm@kvack.org>; Fri, 16 Mar 2018 18:24:38 -0400 (EDT)
Received: by mail-pl0-f72.google.com with SMTP id z11-v6so6234883plo.21
        for <linux-mm@kvack.org>; Fri, 16 Mar 2018 15:24:38 -0700 (PDT)
Received: from mga05.intel.com (mga05.intel.com. [192.55.52.43])
        by mx.google.com with ESMTPS id h8si5700827pgr.370.2018.03.16.15.24.37
        for <linux-mm@kvack.org>
        (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Fri, 16 Mar 2018 15:24:37 -0700 (PDT)
Subject: Re: [PATCH v12 14/22] selftests/vm: clear the bits in shadow reg when
 a pkey is freed.
References: <1519264541-7621-1-git-send-email-linuxram@us.ibm.com>
 <1519264541-7621-15-git-send-email-linuxram@us.ibm.com>
From: Dave Hansen <dave.hansen@intel.com>
Message-ID: <5622aacf-adc6-e547-8f36-9a43f830c29b@intel.com>
Date: Fri, 16 Mar 2018 15:24:28 -0700
MIME-Version: 1.0
In-Reply-To: <1519264541-7621-15-git-send-email-linuxram@us.ibm.com>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Ram Pai <linuxram@us.ibm.com>, shuahkh@osg.samsung.com, linux-kselftest@vger.kernel.org
Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, akpm@linux-foundation.org, benh@kernel.crashing.org, paulus@samba.org, khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, hbabu@us.ibm.com, mhocko@kernel.org, bauerman@linux.vnet.ibm.com, ebiederm@xmission.com, arnd@arndb.de

On 02/21/2018 05:55 PM, Ram Pai wrote:
> diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c
> index c4c73e6..e82bd88 100644
> --- a/tools/testing/selftests/vm/protection_keys.c
> +++ b/tools/testing/selftests/vm/protection_keys.c
> @@ -586,7 +586,8 @@ int sys_pkey_free(unsigned long pkey)
>  	int ret = syscall(SYS_pkey_free, pkey);
>  
>  	if (!ret)
> -		shadow_pkey_reg &= reset_bits(pkey, PKEY_DISABLE_ACCESS);
> +		shadow_pkey_reg &= reset_bits(pkey,
> +				PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE);
>  	dprintf1("%s(pkey=%ld) syscall ret: %d\n", __func__, pkey, ret);
>  	return ret;
>  }

What about your EXEC bit?