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* [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
       [not found] <CGME20170127111947epcas2p14f5ea86f0069142be02339754fda4a55@epcas2p1.samsung.com>
@ 2017-01-27 11:19   ` Shailendra Verma
  0 siblings, 0 replies; 8+ messages in thread
From: Shailendra Verma @ 2017-01-27 11:19 UTC (permalink / raw)
  To: Felix Fietkau, John Crispin, Matthias Brugger, netdev,
	linux-arm-kernel, linux-mediatek, linux-kernel, p.shailesh,
	ashish.kalra, Shailendra Verma, Shailendra Verma

of_match_device could return NULL, and so can cause a NULL
pointer dereference later.

Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 4a62ffd..4495b7b 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
 	int i;
 
 	match = of_match_device(of_mtk_match, &pdev->dev);
+	if (!match) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
 	soc = (struct mtk_soc_data *)match->data;
 
 	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
-- 
1.7.9.5

^ permalink raw reply related	[flat|nested] 8+ messages in thread
* [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
@ 2017-01-27 11:19   ` Shailendra Verma
  0 siblings, 0 replies; 8+ messages in thread
From: Shailendra Verma @ 2017-01-27 11:19 UTC (permalink / raw)
  To: linux-arm-kernel

of_match_device could return NULL, and so can cause a NULL
pointer dereference later.

Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 4a62ffd..4495b7b 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
 	int i;
 
 	match = of_match_device(of_mtk_match, &pdev->dev);
+	if (!match) {
+		dev_err(&pdev->dev, "Error: No device match found\n");
+		return -ENODEV;
+	}
 	soc = (struct mtk_soc_data *)match->data;
 
 	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
-- 
1.7.9.5

^ permalink raw reply related	[flat|nested] 8+ messages in thread
* Re: [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
@ 2017-01-27 12:44     ` Corentin Labbe
  0 siblings, 0 replies; 8+ messages in thread
From: Corentin Labbe @ 2017-01-27 12:44 UTC (permalink / raw)
  To: Shailendra Verma
  Cc: Felix Fietkau, John Crispin, Matthias Brugger, netdev,
	linux-arm-kernel, linux-mediatek, linux-kernel, p.shailesh,
	ashish.kalra, Shailendra Verma

On Fri, Jan 27, 2017 at 04:49:40PM +0530, Shailendra Verma wrote:
> of_match_device could return NULL, and so can cause a NULL
> pointer dereference later.
> 
> Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
> ---
>  drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> index 4a62ffd..4495b7b 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> @@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
>  	int i;
>  
>  	match = of_match_device(of_mtk_match, &pdev->dev);
> +	if (!match) {
> +		dev_err(&pdev->dev, "Error: No device match found\n");
> +		return -ENODEV;
> +	}
>  	soc = (struct mtk_soc_data *)match->data;
>  
>  	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
> -- 

Hello

You could use of_device_get_match_data() and simplifiy code

Regards
Corentin Labbe

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
@ 2017-01-27 12:44     ` Corentin Labbe
  0 siblings, 0 replies; 8+ messages in thread
From: Corentin Labbe @ 2017-01-27 12:44 UTC (permalink / raw)
  To: Shailendra Verma
  Cc: Felix Fietkau, ashish.kalra-Sze3O3UU22JBDgjK7y7TUQ,
	netdev-u79uwXL29TY76Z2rM5mHXA,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA,
	p.shailesh-Sze3O3UU22JBDgjK7y7TUQ,
	linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
	Matthias Brugger, Shailendra Verma,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, John Crispin

On Fri, Jan 27, 2017 at 04:49:40PM +0530, Shailendra Verma wrote:
> of_match_device could return NULL, and so can cause a NULL
> pointer dereference later.
> 
> Signed-off-by: Shailendra Verma <shailendra.v-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> index 4a62ffd..4495b7b 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> @@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
>  	int i;
>  
>  	match = of_match_device(of_mtk_match, &pdev->dev);
> +	if (!match) {
> +		dev_err(&pdev->dev, "Error: No device match found\n");
> +		return -ENODEV;
> +	}
>  	soc = (struct mtk_soc_data *)match->data;
>  
>  	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
> -- 

Hello

You could use of_device_get_match_data() and simplifiy code

Regards
Corentin Labbe

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
@ 2017-01-27 12:44     ` Corentin Labbe
  0 siblings, 0 replies; 8+ messages in thread
From: Corentin Labbe @ 2017-01-27 12:44 UTC (permalink / raw)
  To: linux-arm-kernel

On Fri, Jan 27, 2017 at 04:49:40PM +0530, Shailendra Verma wrote:
> of_match_device could return NULL, and so can cause a NULL
> pointer dereference later.
> 
> Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
> ---
>  drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> index 4a62ffd..4495b7b 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> @@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
>  	int i;
>  
>  	match = of_match_device(of_mtk_match, &pdev->dev);
> +	if (!match) {
> +		dev_err(&pdev->dev, "Error: No device match found\n");
> +		return -ENODEV;
> +	}
>  	soc = (struct mtk_soc_data *)match->data;
>  
>  	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
> -- 

Hello

You could use of_device_get_match_data() and simplifiy code

Regards
Corentin Labbe

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
  2017-01-27 12:44     ` Corentin Labbe
  (?)
@ 2017-01-27 16:26       ` David Miller
  -1 siblings, 0 replies; 8+ messages in thread
From: David Miller @ 2017-01-27 16:26 UTC (permalink / raw)
  To: clabbe.montjoie
  Cc: shailendra.v, nbd, blogic, matthias.bgg, netdev,
	linux-arm-kernel, linux-mediatek, linux-kernel, p.shailesh,
	ashish.kalra, shailendra.capricorn

From: Corentin Labbe <clabbe.montjoie@gmail.com>
Date: Fri, 27 Jan 2017 13:44:49 +0100

> On Fri, Jan 27, 2017 at 04:49:40PM +0530, Shailendra Verma wrote:
>> of_match_device could return NULL, and so can cause a NULL
>> pointer dereference later.
>> 
>> Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
>> ---
>>  drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
>>  1 file changed, 4 insertions(+)
>> 
>> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> index 4a62ffd..4495b7b 100644
>> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> @@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
>>  	int i;
>>  
>>  	match = of_match_device(of_mtk_match, &pdev->dev);
>> +	if (!match) {
>> +		dev_err(&pdev->dev, "Error: No device match found\n");
>> +		return -ENODEV;
>> +	}
>>  	soc = (struct mtk_soc_data *)match->data;
>>  
>>  	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
>> -- 
> 
> Hello
> 
> You could use of_device_get_match_data() and simplifiy code

Agreed.

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
@ 2017-01-27 16:26       ` David Miller
  0 siblings, 0 replies; 8+ messages in thread
From: David Miller @ 2017-01-27 16:26 UTC (permalink / raw)
  To: clabbe.montjoie
  Cc: nbd, ashish.kalra, netdev, linux-kernel, p.shailesh,
	linux-mediatek, shailendra.v, matthias.bgg, shailendra.capricorn,
	linux-arm-kernel, blogic

From: Corentin Labbe <clabbe.montjoie@gmail.com>
Date: Fri, 27 Jan 2017 13:44:49 +0100

> On Fri, Jan 27, 2017 at 04:49:40PM +0530, Shailendra Verma wrote:
>> of_match_device could return NULL, and so can cause a NULL
>> pointer dereference later.
>> 
>> Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
>> ---
>>  drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
>>  1 file changed, 4 insertions(+)
>> 
>> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> index 4a62ffd..4495b7b 100644
>> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> @@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
>>  	int i;
>>  
>>  	match = of_match_device(of_mtk_match, &pdev->dev);
>> +	if (!match) {
>> +		dev_err(&pdev->dev, "Error: No device match found\n");
>> +		return -ENODEV;
>> +	}
>>  	soc = (struct mtk_soc_data *)match->data;
>>  
>>  	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
>> -- 
> 
> Hello
> 
> You could use of_device_get_match_data() and simplifiy code

Agreed.

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
@ 2017-01-27 16:26       ` David Miller
  0 siblings, 0 replies; 8+ messages in thread
From: David Miller @ 2017-01-27 16:26 UTC (permalink / raw)
  To: linux-arm-kernel

From: Corentin Labbe <clabbe.montjoie@gmail.com>
Date: Fri, 27 Jan 2017 13:44:49 +0100

> On Fri, Jan 27, 2017 at 04:49:40PM +0530, Shailendra Verma wrote:
>> of_match_device could return NULL, and so can cause a NULL
>> pointer dereference later.
>> 
>> Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
>> ---
>>  drivers/net/ethernet/mediatek/mtk_eth_soc.c |    4 ++++
>>  1 file changed, 4 insertions(+)
>> 
>> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> index 4a62ffd..4495b7b 100644
>> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> @@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
>>  	int i;
>>  
>>  	match = of_match_device(of_mtk_match, &pdev->dev);
>> +	if (!match) {
>> +		dev_err(&pdev->dev, "Error: No device match found\n");
>> +		return -ENODEV;
>> +	}
>>  	soc = (struct mtk_soc_data *)match->data;
>>  
>>  	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
>> -- 
> 
> Hello
> 
> You could use of_device_get_match_data() and simplifiy code

Agreed.

^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2017-01-27 16:27 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <CGME20170127111947epcas2p14f5ea86f0069142be02339754fda4a55@epcas2p1.samsung.com>
2017-01-27 11:19 ` [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence Shailendra Verma
2017-01-27 11:19   ` Shailendra Verma
2017-01-27 12:44   ` Corentin Labbe
2017-01-27 12:44     ` Corentin Labbe
2017-01-27 12:44     ` Corentin Labbe
2017-01-27 16:26     ` David Miller
2017-01-27 16:26       ` David Miller
2017-01-27 16:26       ` David Miller

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