Re: [PATCH v2 3/6] integrity: remove global variable from machine_keyring.c

[Jarkko Sakkinen]

On Wed Aug 9, 2023 at 10:53 PM EEST, Nayna Jain wrote:
> trust_mok variable is accessed within a single function locally.
>
> Change trust_mok from global to local static variable.
>
> Signed-off-by: Nayna Jain <nayna@xxxxxxxxxxxxx>
> Reviewed-and-tested-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
> ---
>  security/integrity/platform_certs/machine_keyring.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/security/integrity/platform_certs/machine_keyring.c b/security/integrity/platform_certs/machine_keyring.c
> index 389a6e7c9245..9482e16cb2ca 100644
> --- a/security/integrity/platform_certs/machine_keyring.c
> +++ b/security/integrity/platform_certs/machine_keyring.c
> @@ -8,8 +8,6 @@
>  #include <linux/efi.h>
>  #include "../integrity.h"
>  
> -static bool trust_mok;
> -
>  static __init int machine_keyring_init(void)
>  {
>  	int rc;
> @@ -65,9 +63,11 @@ static __init bool uefi_check_trust_mok_keys(void)
>  bool __init trust_moklist(void)
>  {
>  	static bool initialized;
> +	static bool trust_mok;
>  
>  	if (!initialized) {
>  		initialized = true;
> +		trust_mok = false;
>  
>  		if (uefi_check_trust_mok_keys())
>  			trust_mok = true;

Nice catch.

Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>

BR, Jarkko