Re: [PATCH] apparmor: use SEND_SIG_NOINFO instead of NULL in aa_audit()

[Bradley Morgan]

> SEND_SIG_NOINFO is defined as ((struct kernel_siginfo *) 0), so passing
> NULL works, but:
>
> - this works "by accident" and looks as if the caller doesn't understand
>   the signal sending API.
>
> - more importantly, this hides the usage of SEND_SIG_NOINFO from grep,
>   and this is really bad.
- also drop the now redundant (void)
>
Reviewed-by: Bradley Morgan <include@xxxxxxxxx>
> Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
> ---
>  security/apparmor/audit.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
> index 4a60b6fda75f..15e42e96b163 100644
> --- a/security/apparmor/audit.c
> +++ b/security/apparmor/audit.c
> @@ -192,7 +192,7 @@ int aa_audit(int type, struct aa_profile *profile,
>  	aa_audit_msg(type, ad, cb);
>  
>  	if (ad->type == AUDIT_APPARMOR_KILL)
> -		(void)send_sig_info(profile->signal, NULL,
> +		send_sig_info(profile->signal, SEND_SIG_NOINFO,
>  			ad->common.type == LSM_AUDIT_DATA_TASK &&
>  			ad->common.u.tsk ? ad->common.u.tsk : current);
>  
> -- 
> 2.52.0


Also, feel free to CC me in signal patches, so I can review, from you
or from others.
Thanks!