[PATCH] b43: Fix memory leaks in b43_bus_dev_ssb_init and b43_bus_dev_bcma_init

[PATCH] b43: Fix memory leaks in b43_bus_dev_ssb_init and b43_bus_dev_bcma_init

[Jia-Ju Bai]

The memory allocated by kzalloc in b43_bus_dev_ssb_init and
b43_bus_dev_bcma_initis not freed.
This patch fixes the bug by adding kfree in b43_ssb_remove,
b43_bcma_remove and error handling code of b43_bcma_probe.

Thanks Michael for his suggestion.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
---
 drivers/net/wireless/b43/main.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index ec013fb..2c9d9c1 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -5683,6 +5683,7 @@ static int b43_bcma_probe(struct bcma_device *core)
 	schedule_work(&wl->firmware_load);
 
 bcma_out:
+	kfree(dev);
 	return err;
 
 bcma_err_wireless_exit:
@@ -5716,6 +5717,7 @@ static void b43_bcma_remove(struct bcma_device *core)
 	b43_leds_unregister(wl);
 
 	ieee80211_free_hw(wl->hw);
+	kfree(wldev->dev);
 }
 
 static struct bcma_driver b43_bcma_driver = {
@@ -5798,6 +5800,7 @@ static void b43_ssb_remove(struct ssb_device *sdev)
 
 	b43_leds_unregister(wl);
 	b43_wireless_exit(dev, wl);
+	kfree(dev);
 }
 
 static struct ssb_driver b43_ssb_driver = {
-- 
1.7.9.5

[PATCH] b43: Fix memory leaks in b43_bus_dev_ssb_init and b43_bus_dev_bcma_init

[Michael Büsch]

On Tue, 12 Jan 2016 09:01:04 +0800
Jia-Ju Bai <baijiaju1990@163.com> wrote:

> The memory allocated by kzalloc in b43_bus_dev_ssb_init and
> b43_bus_dev_bcma_initis not freed.
> This patch fixes the bug by adding kfree in b43_ssb_remove,
> b43_bcma_remove and error handling code of b43_bcma_probe.
> 
> Thanks Michael for his suggestion.
> 
> Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
> ---
>  drivers/net/wireless/b43/main.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
> index ec013fb..2c9d9c1 100644
> --- a/drivers/net/wireless/b43/main.c
> +++ b/drivers/net/wireless/b43/main.c
> @@ -5683,6 +5683,7 @@ static int b43_bcma_probe(struct bcma_device *core)
>  	schedule_work(&wl->firmware_load);
>  
>  bcma_out:
> +	kfree(dev);
>  	return err;
>  

This is not correct. It will also free dev for the non-error exit.


-- 
Michael
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[PATCH] b43: Fix memory leaks in b43_bus_dev_ssb_init and b43_bus_dev_bcma_init

[Sudip Mukherjee]

From: Jia-Ju Bai <baijiaju1990@163.com>

The memory allocated by kzalloc in b43_bus_dev_ssb_init and
b43_bus_dev_bcma_init is not freed.
This patch fixes the bug by adding kfree in b43_ssb_remove,
b43_bcma_remove and error handling code of b43_bcma_probe.

Thanks Michael for his suggestion.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Acked-by: Michael B?sch <m@bues.ch>
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
---
 drivers/net/wireless/broadcom/b43/main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
index 72380af..b0603e7 100644
--- a/drivers/net/wireless/broadcom/b43/main.c
+++ b/drivers/net/wireless/broadcom/b43/main.c
@@ -5680,11 +5680,12 @@ static int b43_bcma_probe(struct bcma_device *core)
 	INIT_WORK(&wl->firmware_load, b43_request_firmware);
 	schedule_work(&wl->firmware_load);
 
-bcma_out:
 	return err;
 
 bcma_err_wireless_exit:
 	ieee80211_free_hw(wl->hw);
+bcma_out:
+	kfree(dev);
 	return err;
 }
 
@@ -5712,8 +5713,8 @@ static void b43_bcma_remove(struct bcma_device *core)
 	b43_rng_exit(wl);
 
 	b43_leds_unregister(wl);
-
 	ieee80211_free_hw(wl->hw);
+	kfree(wldev->dev);
 }
 
 static struct bcma_driver b43_bcma_driver = {
@@ -5796,6 +5797,7 @@ static void b43_ssb_remove(struct ssb_device *sdev)
 
 	b43_leds_unregister(wl);
 	b43_wireless_exit(dev, wl);
+	kfree(dev);
 }
 
 static struct ssb_driver b43_ssb_driver = {
-- 
1.9.1

[PATCH] b43: Fix memory leaks in b43_bus_dev_ssb_init and b43_bus_dev_bcma_init

[Kalle Valo]

Sudip Mukherjee <sudipm.mukherjee@gmail.com> writes:

> From: Jia-Ju Bai <baijiaju1990@163.com>
>
> The memory allocated by kzalloc in b43_bus_dev_ssb_init and
> b43_bus_dev_bcma_init is not freed.
> This patch fixes the bug by adding kfree in b43_ssb_remove,
> b43_bcma_remove and error handling code of b43_bcma_probe.
>
> Thanks Michael for his suggestion.
>
> Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
> Acked-by: Michael B?sch <m@bues.ch>
> Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>

If no objections I'm planning to queue this to 4.6-rc2.

-- 
Kalle Valo