linux-kernel - Re: [PATCH] kernel: auditfilter: resource management, need process tree when audit_add_watch failed in audit_add

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Date:	Wed, 17 Apr 2013 12:26:02 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Eric Paris <eparis@...hat.com>, Al Viro <viro@...iv.linux.org.uk>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] kernel: auditfilter: resource management, need process
 tree when audit_add_watch failed in audit_add_rule


  also please help checking this patch, when you have time.

  thanks.

On 2013年04月12日 16:56, Chen Gang wrote:
> 
>   need call audit_put_tree, if tree is valid.
>   just like another area have done in function audit_add_rule.
> 
> Signed-off-by: Chen Gang <gang.chen@...anux.com>
> ---
>  kernel/auditfilter.c |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
> index f9fc54b..81f63f9 100644
> --- a/kernel/auditfilter.c
> +++ b/kernel/auditfilter.c
> @@ -952,6 +952,12 @@ static inline int audit_add_rule(struct audit_entry *entry)
>  		err = audit_add_watch(&entry->rule, &list);
>  		if (err) {
>  			mutex_unlock(&audit_filter_mutex);
> +			/*
> +			 * normally audit_add_tree_rule() will free it
> +			 * on failure
> +			 */
> +			if (tree)
> +				audit_put_tree(tree);
>  			goto error;
>  		}
>  	}
> 


-- 
Chen Gang

Asianux Corporation
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