linux-kernel - Re: [PATCH 3/3] lib/kobject: WARN_ON corresponds to BUG

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Date:	Tue, 19 Mar 2013 15:03:03 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	Dong Hao <haodong@...ux.vnet.ibm.com>
CC:	gregkh@...uxfoundation.org, shangw@...ux.vnet.ibm.com,
	weiyang@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] lib/kobject: WARN_ON corresponds to BUG_ON

On 03/19/2013 02:47 PM, Dong Hao wrote:
> From: Dong Hao <haodong@...ux.vnet.ibm.com>
> 
> WARN_ON corresponds to BUG_ON and also gets more info.

Change the log like this:
like the comments said, double initialize a kobj is wrong
but can be recoverd, using WARN_ON to warn the developer also
it can get more info.

(Or you refine the code by yourself.)

> 
> Signed-off-by: Dong Hao <haodong@...ux.vnet.ibm.com>
> ---
>  lib/kobject.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/kobject.c b/lib/kobject.c
> index ff9b3c3..f7d9f31 100644
> --- a/lib/kobject.c
> +++ b/lib/kobject.c
> @@ -281,7 +281,7 @@ void kobject_init(struct kobject *kobj, struct kobj_type *ktype)
>  		/* do not error out as sometimes we can recover */
>  		printk(KERN_ERR "kobject (%p): tried to init an initialized "
>  		       "object, something is seriously wrong.\n", kobj);
> -		dump_stack();
> +		WARN_ON(1);
>  	}
> 
>  	kobject_init_internal(kobj);
> 

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