* [PATCH] gpu: drm: fix possible memory leak in drm_addmap_core()
@ 2022-05-09 5:44 Hangyu Hua
2022-05-23 1:57 ` Hangyu Hua
0 siblings, 1 reply; 3+ messages in thread
From: Hangyu Hua @ 2022-05-09 5:44 UTC (permalink / raw)
To: maarten.lankhorst, mripard, tzimmermann, airlied, daniel
Cc: dri-devel, linux-kernel, Hangyu Hua
map->handle need to be handled correctly when map->type is _DRM_SHM or
_DRM_CONSISTENT just like map->type is _DRM_REGISTERS.
Fixes: 8d153f7107ff ("drm: update user token hashing and map handles")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
---
drivers/gpu/drm/drm_bufs.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index fcca21e8efac..2b3f504c5f9c 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -344,6 +344,15 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset,
if (!list) {
if (map->type == _DRM_REGISTERS)
iounmap(map->handle);
+ else if (map->type == _DRM_SHM) {
+ dev->sigdata.lock = dev->master->lock.hw_lock = NULL;
+ vfree(map->handle);
+ } else if (map->type == _DRM_CONSISTENT) {
+ dma_free_coherent(dev->dev,
+ map->size,
+ map->handle,
+ map->offset);
+ }
kfree(map);
return -EINVAL;
}
@@ -361,6 +370,15 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset,
if (ret) {
if (map->type == _DRM_REGISTERS)
iounmap(map->handle);
+ else if (map->type == _DRM_SHM) {
+ dev->sigdata.lock = dev->master->lock.hw_lock = NULL;
+ vfree(map->handle);
+ } else if (map->type == _DRM_CONSISTENT) {
+ dma_free_coherent(dev->dev,
+ map->size,
+ map->handle,
+ map->offset);
+ }
kfree(map);
kfree(list);
mutex_unlock(&dev->struct_mutex);
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] gpu: drm: fix possible memory leak in drm_addmap_core()
2022-05-09 5:44 [PATCH] gpu: drm: fix possible memory leak in drm_addmap_core() Hangyu Hua
@ 2022-05-23 1:57 ` Hangyu Hua
2022-06-23 1:45 ` Hangyu Hua
0 siblings, 1 reply; 3+ messages in thread
From: Hangyu Hua @ 2022-05-23 1:57 UTC (permalink / raw)
To: maarten.lankhorst, mripard, tzimmermann, airlied, daniel
Cc: dri-devel, linux-kernel
On 2022/5/9 13:44, Hangyu Hua wrote:
> map->handle need to be handled correctly when map->type is _DRM_SHM or
> _DRM_CONSISTENT just like map->type is _DRM_REGISTERS.
>
> Fixes: 8d153f7107ff ("drm: update user token hashing and map handles")
> Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
> ---
> drivers/gpu/drm/drm_bufs.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
> index fcca21e8efac..2b3f504c5f9c 100644
> --- a/drivers/gpu/drm/drm_bufs.c
> +++ b/drivers/gpu/drm/drm_bufs.c
> @@ -344,6 +344,15 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset,
> if (!list) {
> if (map->type == _DRM_REGISTERS)
> iounmap(map->handle);
> + else if (map->type == _DRM_SHM) {
> + dev->sigdata.lock = dev->master->lock.hw_lock = NULL;
> + vfree(map->handle);
> + } else if (map->type == _DRM_CONSISTENT) {
> + dma_free_coherent(dev->dev,
> + map->size,
> + map->handle,
> + map->offset);
> + }
> kfree(map);
> return -EINVAL;
> }
> @@ -361,6 +370,15 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset,
> if (ret) {
> if (map->type == _DRM_REGISTERS)
> iounmap(map->handle);
> + else if (map->type == _DRM_SHM) {
> + dev->sigdata.lock = dev->master->lock.hw_lock = NULL;
> + vfree(map->handle);
> + } else if (map->type == _DRM_CONSISTENT) {
> + dma_free_coherent(dev->dev,
> + map->size,
> + map->handle,
> + map->offset);
> + }
> kfree(map);
> kfree(list);
> mutex_unlock(&dev->struct_mutex);
Gentel ping.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] gpu: drm: fix possible memory leak in drm_addmap_core()
2022-05-23 1:57 ` Hangyu Hua
@ 2022-06-23 1:45 ` Hangyu Hua
0 siblings, 0 replies; 3+ messages in thread
From: Hangyu Hua @ 2022-06-23 1:45 UTC (permalink / raw)
To: maarten.lankhorst, mripard, tzimmermann, airlied, daniel
Cc: dri-devel, linux-kernel
On 2022/5/23 09:57, Hangyu Hua wrote:
> On 2022/5/9 13:44, Hangyu Hua wrote:
>> map->handle need to be handled correctly when map->type is _DRM_SHM or
>> _DRM_CONSISTENT just like map->type is _DRM_REGISTERS.
>>
>> Fixes: 8d153f7107ff ("drm: update user token hashing and map handles")
>> Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
>> ---
>> drivers/gpu/drm/drm_bufs.c | 18 ++++++++++++++++++
>> 1 file changed, 18 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
>> index fcca21e8efac..2b3f504c5f9c 100644
>> --- a/drivers/gpu/drm/drm_bufs.c
>> +++ b/drivers/gpu/drm/drm_bufs.c
>> @@ -344,6 +344,15 @@ static int drm_addmap_core(struct drm_device
>> *dev, resource_size_t offset,
>> if (!list) {
>> if (map->type == _DRM_REGISTERS)
>> iounmap(map->handle);
>> + else if (map->type == _DRM_SHM) {
>> + dev->sigdata.lock = dev->master->lock.hw_lock = NULL;
>> + vfree(map->handle);
>> + } else if (map->type == _DRM_CONSISTENT) {
>> + dma_free_coherent(dev->dev,
>> + map->size,
>> + map->handle,
>> + map->offset);
>> + }
>> kfree(map);
>> return -EINVAL;
>> }
>> @@ -361,6 +370,15 @@ static int drm_addmap_core(struct drm_device
>> *dev, resource_size_t offset,
>> if (ret) {
>> if (map->type == _DRM_REGISTERS)
>> iounmap(map->handle);
>> + else if (map->type == _DRM_SHM) {
>> + dev->sigdata.lock = dev->master->lock.hw_lock = NULL;
>> + vfree(map->handle);
>> + } else if (map->type == _DRM_CONSISTENT) {
>> + dma_free_coherent(dev->dev,
>> + map->size,
>> + map->handle,
>> + map->offset);
>> + }
>> kfree(map);
>> kfree(list);
>> mutex_unlock(&dev->struct_mutex);
>
> Gentel ping.
Gentel ping.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-06-23 1:45 UTC | newest]
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2022-05-09 5:44 [PATCH] gpu: drm: fix possible memory leak in drm_addmap_core() Hangyu Hua
2022-05-23 1:57 ` Hangyu Hua
2022-06-23 1:45 ` Hangyu Hua
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