linux-kernel - [PATCH] Dump stack during sysctl registration failure

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Message-ID: <20071027184328.GC9816@martell.zuzino.mipt.ru>
Date:	Sat, 27 Oct 2007 22:43:28 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Mikael Pettersson <mikpe@...uu.se>, akpm@...l.org
Cc:	linux-kernel@...r.kernel.org, ebiederm@...ssion.com
Subject: [PATCH] Dump stack during sysctl registration failure

On Sat, Oct 27, 2007 at 10:34:53PM +0400,  wrote:
> --- a/arch/powerpc/kernel/idle.c
> +++ b/arch/powerpc/kernel/idle.c
> @@ -122,7 +122,7 @@ static ctl_table powersave_nap_sysctl_root[] = {
>  	{
>  		.ctl_name	= CTL_KERN,
>  		.procname	= "kernel",
> -		.mode		= 0755,
> +		.mode		= 0555,

Speaking of...


[PATCH] Dump stack during sysctl registration failure

Let's make immediately obvious from where sysctl comes from and
messages itself more noticeable.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 kernel/sysctl_check.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/sysctl_check.c
+++ b/kernel/sysctl_check.c
@@ -1432,6 +1432,7 @@ static void set_fail(const char **fail, struct ctl_table *table, const char *str
 		printk(KERN_ERR "sysctl table check failed: ");
 		sysctl_print_path(table);
 		printk(" %s\n", *fail);
+		dump_stack();
 	}
 	*fail = str;
 }
-
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