linux-kernel - Re: [PATCH V2 11/19] irqchip: crossbar: fix memory leak incase of invalid entry

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Date:	Thu, 12 Jun 2014 19:07:34 +0530
From:	Sricharan R <r.sricharan@...com>
To:	Jason Cooper <jason@...edaemon.net>
CC:	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<tony@...mide.com>, <santosh.shilimkar@...com>, <nm@...com>,
	<rnayak@...com>, <linux@....linux.org.uk>, <tglx@...utronix.de>
Subject: Re: [PATCH V2 11/19] irqchip: crossbar: fix memory leak incase of
 invalid entry

Hi Jason,

On Thursday 12 June 2014 06:50 PM, Jason Cooper wrote:
> On Thu, Jun 12, 2014 at 05:23:19PM +0530, Sricharan R wrote:
>> From: Nishanth Menon <nm@...com>
>>
>> When the provided unused skip list entry is greater than max irqs
>> possible, we go to err3, but we fail to free register_offsets,
>> should have returned to err4 instead which ensures that allocated
> 
> s/returned/jumped/
 ok, will correct.

> 
>> register_offsets are freed as well.
>>
>> Signed-off-by: Nishanth Menon <nm@...com>
>> ---
>>  drivers/irqchip/irq-crossbar.c |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
>> index 42a2e62..fea3e5d 100644
>> --- a/drivers/irqchip/irq-crossbar.c
>> +++ b/drivers/irqchip/irq-crossbar.c
>> @@ -225,7 +225,7 @@ static int __init crossbar_of_init(struct device_node *node,
>>  
>>  			if (entry > max) {
>>  				pr_err("Invalid skip entry\n");
>> -				goto err3;
>> +				goto err4;
> 
> This would be a good opportunity to reduce the possibility of future
> errors.  Please consider renaming err{1,2,3,4} to something more
> recognizable while you are here.
> 
  Ok, this is done as a part of patch#13.

Regards,
 Sricharan 
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