linux-kernel - Re: [PATCH] Fix the kernel panic of audit_filter

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Message-ID: <4893CBA9.9020008@cn.fujitsu.com>
Date:	Sat, 02 Aug 2008 10:51:21 +0800
From:	Yu Zhiguo <yuzg@...fujitsu.com>
To:	zhangxiliang <zhangxiliang@...fujitsu.com>
CC:	Eric Paris <eparis@...hat.com>, Steve Grubb <sgrubb@...hat.com>,
	viro@...iv.linux.org.uk, Linux Audit <linux-audit@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Fix the kernel panic of audit_filter_task when key field
 is set


zhangxiliang wrote:

>  static int audit_match_perm(struct audit_context *ctx, int mask)
>  {
> +	if(!ctx)
> +		return 0;
>  	unsigned n = ctx->major;

Please check this patch with scripts/checkpatch.pl and then resend it.


>  	switch (audit_classify_syscall(ctx->arch, n)) {
>  	case 0:	/* native */
> @@ -284,6 +286,8 @@ static int audit_match_filetype(struct audit_context *ctx, int which)
>  {
>  	unsigned index = which & ~S_IFMT;
>  	mode_t mode = which & S_IFMT;
> +	if(!ctx)
> +		return 0;
>  	if (index >= ctx->name_count)
>  		return 0;
>  	if (ctx->names[index].ino == -1)
> 
> 

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