Re: [PATCH] x86/vdso: Add prctl to set per-process VDSO load

[Kevin Easton]

On Tue, Sep 16, 2014 at 05:05:51PM -0700, Richard Larocque wrote:
> +	case PR_SET_VDSO:
> +		if (arg2 == PR_VDSO_ENABLE)
> +			me->signal->disable_vdso = 0;
> +		else if (arg2 == PR_VDSO_DISABLE)
> +			me->signal->disable_vdso = 1;
> +		else
> +			return -EINVAL;
> +		break;
> +	case PR_GET_VDSO:
> +		if (!me->signal->disable_vdso)
> +			error = put_user(PR_VDSO_ENABLE, (int __user *)arg2);
> +		else
> +			error = put_user(PR_VDSO_DISABLE, (int __user *)arg2);
> +		break;

Perhaps both of those should do

if (arg3 || arg4 || arg5)
	return -EINVAL;

    - Kevin
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