[PATCH] keys: fix missing __user in KEYCTL_PKEY_QUERY

[Serge E. Hallyn]

On Fri, Mar 01, 2019 at 11:30:26AM +0000, Ben Dooks wrote:
> The arg5 of KEYCTL_PKEY_QUERY should have a __user pointer tag on
> it as it is a user pointer. This clears the following sparse warning
> for this:
> 
> security/keys/keyctl.c:1755:43: warning: incorrect type in argument 3 (different address spaces)
> security/keys/keyctl.c:1755:43:    expected struct keyctl_pkey_query [noderef] <asn:1>*<noident>
> security/keys/keyctl.c:1755:43:    got struct keyctl_pkey_query *<noident>
> 
> Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>

Acked-by: Serge Hallyn <serge at hallyn.com>

> ---
>  security/keys/keyctl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
> index 7bbe03593e58..3e4053a217c3 100644
> --- a/security/keys/keyctl.c
> +++ b/security/keys/keyctl.c
> @@ -1752,7 +1752,7 @@ SYSCALL_DEFINE5(keyctl, int, option, unsigned long, arg2, unsigned long, arg3,
>  			return -EINVAL;
>  		return keyctl_pkey_query((key_serial_t)arg2,
>  					 (const char __user *)arg4,
> -					 (struct keyctl_pkey_query *)arg5);
> +					 (struct keyctl_pkey_query __user *)arg5);
>  
>  	case KEYCTL_PKEY_ENCRYPT:
>  	case KEYCTL_PKEY_DECRYPT:
> -- 
> 2.20.1