Am 25.02.20 um 20:11 schrieb Alex Deucher:
On Tue, Feb 25, 2020 at 2:09 PM Christian König
<ckoenig.leichtzumerken@xxxxxxxxx> wrote:
Am 25.02.20 um 19:56 schrieb Alex Deucher:
From: Ahzo <Ahzo@xxxxxxxxxxxx>
Set the drm_device to NULL, so that the newly created buffer object
doesn't appear to use the embedded gem object.
This is necessary, because otherwise no corresponding dma_resv_fini for
the dma_resv_init is called, resulting in a memory leak.
The dma_resv_fini in ttm_bo_release_list is only called if the embedded
gem object is not used, which is determined by checking if the
drm_device is NULL.
Bug: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.freedesktop.org%2Fdrm%2Famd%2Fissues%2F958&data=02%7C01%7Cchristian.koenig%40amd.com%7Caa3f774da03e4dfcc09a08d7ba268305%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637182546879144030&sdata=N8WxYZZRj5obMU5SLv0giog0a1sCYi%2FouxSuWNom0gw%3D&reserved=0
Fixes: 1e053b10ba60 ("drm/ttm: use gem reservation object")
Signed-off-by: Ahzo <Ahzo@xxxxxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Good catch I was trying to hunt that one down as well.
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Can you apply it to drm-misc?
Sure, but not today. Need to get the kids to bed.
Christian.
Thanks,
Alex
---
drivers/gpu/drm/ttm/ttm_bo_util.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index c8e359ded1df..44c1e7adfb7c 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -514,6 +514,7 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
fbo->base.base.resv = &fbo->base.base._resv;
dma_resv_init(&fbo->base.base._resv);
+ fbo->base.base.dev = NULL;
ret = dma_resv_trylock(&fbo->base.base._resv);
WARN_ON(!ret);
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