diff mbox

[V2,11/19] irqchip: crossbar: fix memory leak incase of invalid entry

Message ID 1402574007-13987-12-git-send-email-r.sricharan@ti.com
State New
Headers show

Commit Message

Sricharan R June 12, 2014, 11:53 a.m. UTC
From: Nishanth Menon <nm@ti.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
register_offsets are freed as well.

Signed-off-by: Nishanth Menon <nm@ti.com>
---
 drivers/irqchip/irq-crossbar.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jason Cooper June 12, 2014, 1:20 p.m. UTC | #1
On Thu, Jun 12, 2014 at 05:23:19PM +0530, Sricharan R wrote:
> From: Nishanth Menon <nm@ti.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/

> register_offsets are freed as well.
> 
> Signed-off-by: Nishanth Menon <nm@ti.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.

thx,

Jason.

>  			}
>  			cb->irq_map[entry] = IRQ_SKIP;
>  		}
> -- 
> 1.7.9.5
> 
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Sricharan R June 12, 2014, 1:37 p.m. UTC | #2
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@ti.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@ti.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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diff mbox

Patch

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;
 			}
 			cb->irq_map[entry] = IRQ_SKIP;
 		}