Ben, I think this is like the 5th patch tackling this issue, I think
we should merge one of those.
On Thu, Oct 15, 2020 at 6:23 AM Keita Suzuki
<keitasuzuki.park@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> struct pw_rail_t is allocated as an array in function nvios_iccsense_parse,
> and stored to a struct member of local variable. However, the array is not
> freed when the local variable becomes invalid, and the reference is not
> passed on, leading to a memory leak.
>
> Fix this by freeing struct pw_rail_t when exiting nvkm_iccsense_oneinit.
>
> Signed-off-by: Keita Suzuki <keitasuzuki.park@xxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c
> index fecfa6afcf54..8ba8d8e3f52a 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c
> @@ -280,8 +280,10 @@ nvkm_iccsense_oneinit(struct nvkm_subdev *subdev)
> }
>
> rail = kmalloc(sizeof(*rail), GFP_KERNEL);
> - if (!rail)
> + if (!rail) {
> + kfree(stbl.rail);
> return -ENOMEM;
> + }
>
> rail->read = read;
> rail->sensor = sensor;
> @@ -291,6 +293,7 @@ nvkm_iccsense_oneinit(struct nvkm_subdev *subdev)
> list_add_tail(&rail->head, &iccsense->rails);
> }
> }
> + kfree(stbl.rail);
> return 0;
> }
>
> --
> 2.17.1
>
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