linux-kernel - Re: [PATCH] kernel: kallsyms: parameters checking, for EXPORT_SYMBOL

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Date:	Thu, 11 Apr 2013 12:27:18 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Stephen Boyd <sboyd@...eaurora.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kernel: kallsyms: parameters checking, for EXPORT_SYMBOL_GPL
 functions

On 2013年04月11日 10:52, Rusty Russell wrote:
>>> >> Or is someone already doing this?
>>> >> 
>> >
>> >   really has:
>> >
>> >     kernel: __wake_up_sync_key in kernel/sched/core.c.
>> >     lib: *printf.
>> >     mm:  kfree.
> No, I mean "is someone calling these functions with NULL".
> 
> Cheers,
> Rusty.
> 
> 

  often "kfree(NULL)", that is ok. it will let caller easier using it.
  also often give 0 size to snprintf, it still let caller easy using.

  if we treat EXPORT functions of kallsyms as commonly used (or we want to)
    I suggest to give parameter check for them.


  thanks.

  :-)

-- 
Chen Gang

Asianux Corporation
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