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* [PATCH] b43: fix memory leak
@ 2016-02-18 12:34 Sudip Mukherjee
  2016-02-18 13:40   ` Rafał Miłecki
  2016-02-18 16:32   ` Michael Büsch
  0 siblings, 2 replies; 14+ messages in thread
From: Sudip Mukherjee @ 2016-02-18 12:34 UTC (permalink / raw)
  To: Kalle Valo; +Cc: linux-kernel, linux-wireless, b43-dev, netdev

From: Sudip Mukherjee <sudip@vectorindia.org>

On error we jumped to the label bcma_out and returned the error code but
we missed freeing dev.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---
 drivers/net/wireless/broadcom/b43/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
index c279211..78f670a 100644
--- a/drivers/net/wireless/broadcom/b43/main.c
+++ b/drivers/net/wireless/broadcom/b43/main.c
@@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
 	wl = b43_wireless_init(dev);
 	if (IS_ERR(wl)) {
 		err = PTR_ERR(wl);
+		kfree(dev);
 		goto bcma_out;
 	}
 
-- 
1.9.1


^ permalink raw reply related	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
  2016-02-18 12:34 [PATCH] b43: fix memory leak Sudip Mukherjee
@ 2016-02-18 13:40   ` Rafał Miłecki
  2016-02-18 16:32   ` Michael Büsch
  1 sibling, 0 replies; 14+ messages in thread
From: Rafał Miłecki @ 2016-02-18 13:40 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, Network Development, linux-wireless,
	Linux Kernel Mailing List, b43-dev

On 18 February 2016 at 13:34, Sudip Mukherjee
<sudipm.mukherjee@gmail.com> wrote:
> From: Sudip Mukherjee <sudip@vectorindia.org>
>
> On error we jumped to the label bcma_out and returned the error code but
> we missed freeing dev.

What if b43_one_core_attach fails? Won't we miss kfree then as well?
Shouldn't you simply improve error path and maybe use an additional
label? Also may we be missing a proper free in b43_bcma_remove as
well?

Your patch subject could also be a bit more descriptive (e.g. what
memory leak exactly is it).

^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH] b43: fix memory leak
@ 2016-02-18 13:40   ` Rafał Miłecki
  0 siblings, 0 replies; 14+ messages in thread
From: Rafał Miłecki @ 2016-02-18 13:40 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, Network Development, linux-wireless,
	Linux Kernel Mailing List, b43-dev

On 18 February 2016 at 13:34, Sudip Mukherjee
<sudipm.mukherjee@gmail.com> wrote:
> From: Sudip Mukherjee <sudip@vectorindia.org>
>
> On error we jumped to the label bcma_out and returned the error code but
> we missed freeing dev.

What if b43_one_core_attach fails? Won't we miss kfree then as well?
Shouldn't you simply improve error path and maybe use an additional
label? Also may we be missing a proper free in b43_bcma_remove as
well?

Your patch subject could also be a bit more descriptive (e.g. what
memory leak exactly is it).

^ permalink raw reply	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
  2016-02-18 12:34 [PATCH] b43: fix memory leak Sudip Mukherjee
@ 2016-02-18 16:32   ` Michael Büsch
  2016-02-18 16:32   ` Michael Büsch
  1 sibling, 0 replies; 14+ messages in thread
From: Michael Büsch @ 2016-02-18 16:32 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, netdev, linux-wireless, linux-kernel, b43-dev, Jia-Ju Bai

[-- Attachment #1: Type: text/plain, Size: 1257 bytes --]

On Thu, 18 Feb 2016 18:04:36 +0530
Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:

> From: Sudip Mukherjee <sudip@vectorindia.org>
> 
> On error we jumped to the label bcma_out and returned the error code but
> we missed freeing dev.
> 
> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
> ---
>  drivers/net/wireless/broadcom/b43/main.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
> index c279211..78f670a 100644
> --- a/drivers/net/wireless/broadcom/b43/main.c
> +++ b/drivers/net/wireless/broadcom/b43/main.c
> @@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>  	wl = b43_wireless_init(dev);
>  	if (IS_ERR(wl)) {
>  		err = PTR_ERR(wl);
> +		kfree(dev);
>  		goto bcma_out;
>  	}
>  

We recently had a patch that fixes this, among more leaks. Subject:
[PATCH v2 resend] b43: Fix memory leaks in b43_bus_dev_ssb_init and
b43_bus_dev_bcma_init

Please test that patch instead, so we can finally apply it.

It needs to be tested on both ssb and bcma. Come on. This isn't too
hard. :) Please somebody with any hardware test it. (I currently don't
have any b43 hardware)

-- 
Michael

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^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH] b43: fix memory leak
@ 2016-02-18 16:32   ` Michael Büsch
  0 siblings, 0 replies; 14+ messages in thread
From: Michael Büsch @ 2016-02-18 16:32 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, netdev, linux-wireless, linux-kernel, b43-dev, Jia-Ju Bai

On Thu, 18 Feb 2016 18:04:36 +0530
Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:

> From: Sudip Mukherjee <sudip@vectorindia.org>
> 
> On error we jumped to the label bcma_out and returned the error code but
> we missed freeing dev.
> 
> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
> ---
>  drivers/net/wireless/broadcom/b43/main.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
> index c279211..78f670a 100644
> --- a/drivers/net/wireless/broadcom/b43/main.c
> +++ b/drivers/net/wireless/broadcom/b43/main.c
> @@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>  	wl = b43_wireless_init(dev);
>  	if (IS_ERR(wl)) {
>  		err = PTR_ERR(wl);
> +		kfree(dev);
>  		goto bcma_out;
>  	}
>  

We recently had a patch that fixes this, among more leaks. Subject:
[PATCH v2 resend] b43: Fix memory leaks in b43_bus_dev_ssb_init and
b43_bus_dev_bcma_init

Please test that patch instead, so we can finally apply it.

It needs to be tested on both ssb and bcma. Come on. This isn't too
hard. :) Please somebody with any hardware test it. (I currently don't
have any b43 hardware)

-- 
Michael
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^ permalink raw reply	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
  2016-02-18 16:32   ` Michael Büsch
@ 2016-02-19  7:44     ` Kalle Valo
  -1 siblings, 0 replies; 14+ messages in thread
From: Kalle Valo @ 2016-02-19  7:44 UTC (permalink / raw)
  To: Michael Büsch
  Cc: Sudip Mukherjee, netdev, linux-wireless, linux-kernel, b43-dev,
	Jia-Ju Bai

Michael Büsch <m@bues.ch> writes:

> On Thu, 18 Feb 2016 18:04:36 +0530
> Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
>
>> From: Sudip Mukherjee <sudip@vectorindia.org>
>> 
>> On error we jumped to the label bcma_out and returned the error code but
>> we missed freeing dev.
>> 
>> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
>> ---
>>  drivers/net/wireless/broadcom/b43/main.c | 1 +
>>  1 file changed, 1 insertion(+)
>> 
>> diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
>> index c279211..78f670a 100644
>> --- a/drivers/net/wireless/broadcom/b43/main.c
>> +++ b/drivers/net/wireless/broadcom/b43/main.c
>> @@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>>  	wl = b43_wireless_init(dev);
>>  	if (IS_ERR(wl)) {
>>  		err = PTR_ERR(wl);
>> +		kfree(dev);
>>  		goto bcma_out;
>>  	}
>>  
>
> We recently had a patch that fixes this, among more leaks. Subject:
> [PATCH v2 resend] b43: Fix memory leaks in b43_bus_dev_ssb_init and
> b43_bus_dev_bcma_init
>
> Please test that patch instead, so we can finally apply it.
>
> It needs to be tested on both ssb and bcma. Come on. This isn't too
> hard. :) Please somebody with any hardware test it. (I currently don't
> have any b43 hardware)

And the patch can be downloaded from patchwork:

https://patchwork.kernel.org/patch/8049041/

-- 
Kalle Valo

^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH] b43: fix memory leak
@ 2016-02-19  7:44     ` Kalle Valo
  0 siblings, 0 replies; 14+ messages in thread
From: Kalle Valo @ 2016-02-19  7:44 UTC (permalink / raw)
  To: Michael Büsch
  Cc: Sudip Mukherjee, netdev, linux-wireless, linux-kernel, b43-dev,
	Jia-Ju Bai

Michael B?sch <m@bues.ch> writes:

> On Thu, 18 Feb 2016 18:04:36 +0530
> Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
>
>> From: Sudip Mukherjee <sudip@vectorindia.org>
>> 
>> On error we jumped to the label bcma_out and returned the error code but
>> we missed freeing dev.
>> 
>> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
>> ---
>>  drivers/net/wireless/broadcom/b43/main.c | 1 +
>>  1 file changed, 1 insertion(+)
>> 
>> diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
>> index c279211..78f670a 100644
>> --- a/drivers/net/wireless/broadcom/b43/main.c
>> +++ b/drivers/net/wireless/broadcom/b43/main.c
>> @@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>>  	wl = b43_wireless_init(dev);
>>  	if (IS_ERR(wl)) {
>>  		err = PTR_ERR(wl);
>> +		kfree(dev);
>>  		goto bcma_out;
>>  	}
>>  
>
> We recently had a patch that fixes this, among more leaks. Subject:
> [PATCH v2 resend] b43: Fix memory leaks in b43_bus_dev_ssb_init and
> b43_bus_dev_bcma_init
>
> Please test that patch instead, so we can finally apply it.
>
> It needs to be tested on both ssb and bcma. Come on. This isn't too
> hard. :) Please somebody with any hardware test it. (I currently don't
> have any b43 hardware)

And the patch can be downloaded from patchwork:

https://patchwork.kernel.org/patch/8049041/

-- 
Kalle Valo

^ permalink raw reply	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
  2016-02-19  7:44     ` Kalle Valo
@ 2016-02-19 15:07       ` Sudip Mukherjee
  -1 siblings, 0 replies; 14+ messages in thread
From: Sudip Mukherjee @ 2016-02-19 15:07 UTC (permalink / raw)
  To: Kalle Valo, Michael Büsch
  Cc: netdev, linux-wireless, linux-kernel, b43-dev, Jia-Ju Bai

On Friday 19 February 2016 01:14 PM, Kalle Valo wrote:
> Michael Büsch <m@bues.ch> writes:
>
>> On Thu, 18 Feb 2016 18:04:36 +0530
>> Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
>>
>>> From: Sudip Mukherjee <sudip@vectorindia.org>
>>>
>>> On error we jumped to the label bcma_out and returned the error code but
>>> we missed freeing dev.
>>>
>>> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
>>> ---
>>>   drivers/net/wireless/broadcom/b43/main.c | 1 +
>>>   1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
>>> index c279211..78f670a 100644
>>> --- a/drivers/net/wireless/broadcom/b43/main.c
>>> +++ b/drivers/net/wireless/broadcom/b43/main.c
>>> @@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>>>   	wl = b43_wireless_init(dev);
>>>   	if (IS_ERR(wl)) {
>>>   		err = PTR_ERR(wl);
>>> +		kfree(dev);
>>>   		goto bcma_out;
>>>   	}
>>>
>>
>> We recently had a patch that fixes this, among more leaks. Subject:
>> [PATCH v2 resend] b43: Fix memory leaks in b43_bus_dev_ssb_init and
>> b43_bus_dev_bcma_init
>>
>> Please test that patch instead, so we can finally apply it.
>>
>> It needs to be tested on both ssb and bcma. Come on. This isn't too
>> hard. :) Please somebody with any hardware test it. (I currently don't
>> have any b43 hardware)
>
> And the patch can be downloaded from patchwork:
>
> https://patchwork.kernel.org/patch/8049041/

I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311 
[14e4:4311] (rev 01)".
I will try to test it on this weekend.

regards
sudip




^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH] b43: fix memory leak
@ 2016-02-19 15:07       ` Sudip Mukherjee
  0 siblings, 0 replies; 14+ messages in thread
From: Sudip Mukherjee @ 2016-02-19 15:07 UTC (permalink / raw)
  To: Kalle Valo, Michael Büsch
  Cc: netdev, linux-wireless, linux-kernel, b43-dev, Jia-Ju Bai

On Friday 19 February 2016 01:14 PM, Kalle Valo wrote:
> Michael B?sch <m@bues.ch> writes:
>
>> On Thu, 18 Feb 2016 18:04:36 +0530
>> Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
>>
>>> From: Sudip Mukherjee <sudip@vectorindia.org>
>>>
>>> On error we jumped to the label bcma_out and returned the error code but
>>> we missed freeing dev.
>>>
>>> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
>>> ---
>>>   drivers/net/wireless/broadcom/b43/main.c | 1 +
>>>   1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
>>> index c279211..78f670a 100644
>>> --- a/drivers/net/wireless/broadcom/b43/main.c
>>> +++ b/drivers/net/wireless/broadcom/b43/main.c
>>> @@ -5671,6 +5671,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>>>   	wl = b43_wireless_init(dev);
>>>   	if (IS_ERR(wl)) {
>>>   		err = PTR_ERR(wl);
>>> +		kfree(dev);
>>>   		goto bcma_out;
>>>   	}
>>>
>>
>> We recently had a patch that fixes this, among more leaks. Subject:
>> [PATCH v2 resend] b43: Fix memory leaks in b43_bus_dev_ssb_init and
>> b43_bus_dev_bcma_init
>>
>> Please test that patch instead, so we can finally apply it.
>>
>> It needs to be tested on both ssb and bcma. Come on. This isn't too
>> hard. :) Please somebody with any hardware test it. (I currently don't
>> have any b43 hardware)
>
> And the patch can be downloaded from patchwork:
>
> https://patchwork.kernel.org/patch/8049041/

I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311 
[14e4:4311] (rev 01)".
I will try to test it on this weekend.

regards
sudip

^ permalink raw reply	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
@ 2016-03-10 17:43         ` Michael Büsch
  0 siblings, 0 replies; 14+ messages in thread
From: Michael Büsch @ 2016-03-10 17:43 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, netdev, Jia-Ju Bai, linux-wireless, linux-kernel, b43-dev

[-- Attachment #1: Type: text/plain, Size: 330 bytes --]

On Fri, 19 Feb 2016 20:37:18 +0530
Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:

> > https://patchwork.kernel.org/patch/8049041/  
> 
> I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311 
> [14e4:4311] (rev 01)".
> I will try to test it on this weekend.

Any news on this one?


-- 
Michael

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^ permalink raw reply	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
@ 2016-03-10 17:43         ` Michael Büsch
  0 siblings, 0 replies; 14+ messages in thread
From: Michael Büsch @ 2016-03-10 17:43 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, netdev-u79uwXL29TY76Z2rM5mHXA, Jia-Ju Bai,
	linux-wireless-u79uwXL29TY76Z2rM5mHXA,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA,
	b43-dev-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r

[-- Attachment #1: Type: text/plain, Size: 360 bytes --]

On Fri, 19 Feb 2016 20:37:18 +0530
Sudip Mukherjee <sudipm.mukherjee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> > https://patchwork.kernel.org/patch/8049041/  
> 
> I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311 
> [14e4:4311] (rev 01)".
> I will try to test it on this weekend.

Any news on this one?


-- 
Michael

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^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH] b43: fix memory leak
@ 2016-03-10 17:43         ` Michael Büsch
  0 siblings, 0 replies; 14+ messages in thread
From: Michael Büsch @ 2016-03-10 17:43 UTC (permalink / raw)
  To: Sudip Mukherjee
  Cc: Kalle Valo, netdev, Jia-Ju Bai, linux-wireless, linux-kernel, b43-dev

On Fri, 19 Feb 2016 20:37:18 +0530
Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:

> > https://patchwork.kernel.org/patch/8049041/  
> 
> I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311 
> [14e4:4311] (rev 01)".
> I will try to test it on this weekend.

Any news on this one?


-- 
Michael
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^ permalink raw reply	[flat|nested] 14+ messages in thread
* Re: [PATCH] b43: fix memory leak
  2016-03-10 17:43         ` Michael Büsch
@ 2016-03-10 17:56           ` Sudip Mukherjee
  -1 siblings, 0 replies; 14+ messages in thread
From: Sudip Mukherjee @ 2016-03-10 17:56 UTC (permalink / raw)
  To: Michael Büsch
  Cc: Kalle Valo, netdev, Jia-Ju Bai, linux-wireless, linux-kernel, b43-dev

On Thursday 10 March 2016 11:13 PM, Michael Büsch wrote:
> On Fri, 19 Feb 2016 20:37:18 +0530
> Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
>
>>> https://patchwork.kernel.org/patch/8049041/
>>
>> I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311
>> [14e4:4311] (rev 01)".
>> I will try to test it on this weekend.
>
> Any news on this one?

No. Sorry. I was trying to install ubuntu 14.04 in it, but for some 
reason the usb stick is not moving past the boot screen. Give me two 
more days and I will let you all know by this Saturday.

regards
sudip

^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH] b43: fix memory leak
@ 2016-03-10 17:56           ` Sudip Mukherjee
  0 siblings, 0 replies; 14+ messages in thread
From: Sudip Mukherjee @ 2016-03-10 17:56 UTC (permalink / raw)
  To: Michael Büsch
  Cc: Kalle Valo, netdev, Jia-Ju Bai, linux-wireless, linux-kernel, b43-dev

On Thursday 10 March 2016 11:13 PM, Michael B?sch wrote:
> On Fri, 19 Feb 2016 20:37:18 +0530
> Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
>
>>> https://patchwork.kernel.org/patch/8049041/
>>
>> I have an old laptop running on 800Mhz CPU. It has "Broadcom BCM4311
>> [14e4:4311] (rev 01)".
>> I will try to test it on this weekend.
>
> Any news on this one?

No. Sorry. I was trying to install ubuntu 14.04 in it, but for some 
reason the usb stick is not moving past the boot screen. Give me two 
more days and I will let you all know by this Saturday.

regards
sudip

^ permalink raw reply	[flat|nested] 14+ messages in thread
end of thread, other threads:[~2016-03-10 17:56 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-02-18 12:34 [PATCH] b43: fix memory leak Sudip Mukherjee
2016-02-18 13:40 ` Rafał Miłecki
2016-02-18 13:40   ` Rafał Miłecki
2016-02-18 16:32 ` Michael Büsch
2016-02-18 16:32   ` Michael Büsch
2016-02-19  7:44   ` Kalle Valo
2016-02-19  7:44     ` Kalle Valo
2016-02-19 15:07     ` Sudip Mukherjee
2016-02-19 15:07       ` Sudip Mukherjee
2016-03-10 17:43       ` Michael Büsch
2016-03-10 17:43         ` Michael Büsch
2016-03-10 17:43         ` Michael Büsch
2016-03-10 17:56         ` Sudip Mukherjee
2016-03-10 17:56           ` Sudip Mukherjee

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