linux-kernel - Re: [PATCH 18/20] staging/lustre/libcfs: get rid of debugfs/lnet/debug

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Message-Id: <188E1E93-DB4A-48FD-8A4B-E4887332CCE1@linuxhacker.ru>
Date:	Mon, 13 Jul 2015 22:45:36 -0400
From:	Oleg Drokin <green@...uxhacker.ru>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	devel@...verdev.osuosl.org,
	Andreas Dilger <andreas.dilger@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 18/20] staging/lustre/libcfs: get rid of debugfs/lnet/debug_mb


On Jul 13, 2015, at 10:43 PM, Greg Kroah-Hartman wrote:

> On Wed, Jul 08, 2015 at 11:45:59AM +0300, Dan Carpenter wrote:
>> On Mon, Jul 06, 2015 at 12:48:56PM -0400, green@...uxhacker.ru wrote:
>>> +static int libcfs_param_debug_mb_set(const char *val,
>>> +				     const struct kernel_param *kp)
>>> +{
>>> +	int rc;
>>> +	unsigned num;
>>> +
>>> +	rc = kstrtouint(val, 0, &num);
>>> +	if (rc == -EINVAL)
>>> +		return -EINVAL;
>> 
>> Presumably, this is root only so using num uninitialized is not an
>> information leak.
> 
> But it's not good, this should be a check for rc < 0 to make sure.
> 
> Oleg, can you send a follow-on patch to fix this up?

Sure.
Do you want it now or should I wait till you merge my previous bunch?

Bye,
    Oleg
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