| Message ID | 20241014075900.86537-1-umang.jain@ideasonboard.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | staging: vchiq_arm: Utilize devm_kzalloc in the probe() function | expand |
Hi all, Please ignore this patch, it was a wrong-send (older version) On 14/10/24 1:29 pm, Umang Jain wrote: > The two resources, 'mgmt' and 'platform_state' are currently allocated > dynamically using kzalloc(). Unfortunately, both are subject to memory > leaks in the error handling paths of the probe() function. > > To address this issue, use device resource management helper devm_kzalloc() > for proper cleanup during allocation. > > Cc: stable@vger.kernel.org > Fixes: 1c9e16b73166 ("staging: vc04_services: vchiq_arm: Split driver static and runtime data") > Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> > --- > .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c > index 29e78700463f..373cfdd5b020 100644 > --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c > +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c > @@ -285,7 +285,7 @@ vchiq_platform_init_state(struct vchiq_state *state) > { > struct vchiq_arm_state *platform_state; > > - platform_state = kzalloc(sizeof(*platform_state), GFP_KERNEL); > + platform_state = devm_kzalloc(state->dev, sizeof(*platform_state), GFP_KERNEL); > if (!platform_state) > return -ENOMEM; > > @@ -1344,7 +1344,7 @@ static int vchiq_probe(struct platform_device *pdev) > return -ENOENT; > } > > - mgmt = kzalloc(sizeof(*mgmt), GFP_KERNEL); > + mgmt = devm_kzalloc(&pdev->dev, sizeof(*mgmt), GFP_KERNEL); > if (!mgmt) > return -ENOMEM; > > @@ -1402,8 +1402,6 @@ static void vchiq_remove(struct platform_device *pdev) > > arm_state = vchiq_platform_get_arm_state(&mgmt->state); > kthread_stop(arm_state->ka_thread); > - > - kfree(mgmt); > } > > static struct platform_driver vchiq_driver = {
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c index 29e78700463f..373cfdd5b020 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c @@ -285,7 +285,7 @@ vchiq_platform_init_state(struct vchiq_state *state) { struct vchiq_arm_state *platform_state; - platform_state = kzalloc(sizeof(*platform_state), GFP_KERNEL); + platform_state = devm_kzalloc(state->dev, sizeof(*platform_state), GFP_KERNEL); if (!platform_state) return -ENOMEM; @@ -1344,7 +1344,7 @@ static int vchiq_probe(struct platform_device *pdev) return -ENOENT; } - mgmt = kzalloc(sizeof(*mgmt), GFP_KERNEL); + mgmt = devm_kzalloc(&pdev->dev, sizeof(*mgmt), GFP_KERNEL); if (!mgmt) return -ENOMEM; @@ -1402,8 +1402,6 @@ static void vchiq_remove(struct platform_device *pdev) arm_state = vchiq_platform_get_arm_state(&mgmt->state); kthread_stop(arm_state->ka_thread); - - kfree(mgmt); } static struct platform_driver vchiq_driver = {
The two resources, 'mgmt' and 'platform_state' are currently allocated dynamically using kzalloc(). Unfortunately, both are subject to memory leaks in the error handling paths of the probe() function. To address this issue, use device resource management helper devm_kzalloc() for proper cleanup during allocation. Cc: stable@vger.kernel.org Fixes: 1c9e16b73166 ("staging: vc04_services: vchiq_arm: Split driver static and runtime data") Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> --- .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)