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Subject: Re: [PATCH v12 14/22] selftests/vm: clear the bits in shadow reg when
 a pkey is freed.
To: Ram Pai <linuxram@us.ibm.com>, shuahkh@osg.samsung.com,
 linux-kselftest@vger.kernel.org
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From: Dave Hansen <dave.hansen@intel.com>
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Date: Fri, 16 Mar 2018 15:24:28 -0700
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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?