[PATCH -next] drm/nouveau/kms/nvd9-: Fix file release memory leak

2020-07-22 Thread Wei Yongjun
When using single_open() for opening, single_release() should be
used instead of seq_release(), otherwise there is a memory leak.

Fixes: 12885ecbfe62 ("drm/nouveau/kms/nvd9-: Add CRC support")
Reported-by: Hulk Robot 
Signed-off-by: Wei Yongjun 
---
 drivers/gpu/drm/nouveau/dispnv50/crc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c 
b/drivers/gpu/drm/nouveau/dispnv50/crc.c
index f17fb6d56757..4971a1042415 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c
@@ -706,6 +706,7 @@ static const struct file_operations 
nv50_crc_flip_threshold_fops = {
.open = nv50_crc_debugfs_flip_threshold_open,
.read = seq_read,
.write = nv50_crc_debugfs_flip_threshold_set,
+   .release = single_release,
 };
 
 int nv50_head_crc_late_register(struct nv50_head *head)



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Re: [PATCH -next] drm/nouveau/kms/nvd9-: Fix file release memory leak

2020-07-21 Thread Lyude Paul
Reviewed-by: Lyude Paul 

Thanks!

On Tue, 2020-07-21 at 15:17 +, Wei Yongjun wrote:
> When using single_open() for opening, single_release() should be
> used instead of seq_release(), otherwise there is a memory leak.
> 
> Fixes: 12885ecbfe62 ("drm/nouveau/kms/nvd9-: Add CRC support")
> Reported-by: Hulk Robot 
> Signed-off-by: Wei Yongjun 
> ---
>  drivers/gpu/drm/nouveau/dispnv50/crc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c
> b/drivers/gpu/drm/nouveau/dispnv50/crc.c
> index f17fb6d56757..4971a1042415 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/crc.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c
> @@ -706,6 +706,7 @@ static const struct file_operations
> nv50_crc_flip_threshold_fops = {
>   .open = nv50_crc_debugfs_flip_threshold_open,
>   .read = seq_read,
>   .write = nv50_crc_debugfs_flip_threshold_set,
> + .release = single_release,
>  };
>  
>  int nv50_head_crc_late_register(struct nv50_head *head)
> 
> 
> 
-- 
Cheers,
Lyude Paul (she/her)
Software Engineer at Red Hat

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