linux-kernel - Re: [PATCH] audit: remove redundant condition check in kauditd

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Date:   Fri, 25 Oct 2019 07:43:37 +0200
From:   Paul Moore <paul@...l-moore.com>
To:     Yunfeng Ye <yeyunfeng@...wei.com>, <eparis@...hat.com>
CC:     <linux-audit@...hat.com>, <linux-kernel@...r.kernel.org>,
        <hushiyuan@...wei.com>, <linfeilong@...wei.com>
Subject: Re: [PATCH] audit: remove redundant condition check in kauditd_thread()

On October 23, 2019 3:27:50 PM Yunfeng Ye <yeyunfeng@...wei.com> wrote:
> Warning is found by the code analysis tool:
>  "the condition 'if(ac && rc < 0)' is redundant: ac"
>
>
> The @ac variable has been checked before. It can't be a null pointer
> here, so remove the redundant condition check.
>
>
> Signed-off-by: Yunfeng Ye <yeyunfeng@...wei.com>
> ---
> kernel/audit.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)

Hello,

Thank you for the patch.  Looking quickly at it, it appears to be correct, unfortunately I'm not in a position to merge non-critical patches, but I expect to merge this next week.


> diff --git a/kernel/audit.c b/kernel/audit.c
> index da8dc0db5bd3..193f3a1f4425 100644
> --- a/kernel/audit.c
> +++ b/kernel/audit.c
> @@ -830,7 +830,7 @@ static int kauditd_thread(void *dummy)
>  rc = kauditd_send_queue(sk, portid,
>  &audit_hold_queue, UNICAST_RETRIES,
>  NULL, kauditd_rehold_skb);
> - if (ac && rc < 0) {
> + if (rc < 0) {
>  sk = NULL;
>  auditd_reset(ac);
>  goto main_queue;
> @@ -840,7 +840,7 @@ static int kauditd_thread(void *dummy)
>  rc = kauditd_send_queue(sk, portid,
>  &audit_retry_queue, UNICAST_RETRIES,
>  NULL, kauditd_hold_skb);
> - if (ac && rc < 0) {
> + if (rc < 0) {
>  sk = NULL;
>  auditd_reset(ac);
>  goto main_queue;
> --
> 2.7.4.3

--
paul moore
www.paul-moore.com