drm_gem_object_put() should be paired with drm_gem_object_lookup().
All gem objs are saved in fb->base.obj[]. Need put the old first before
assign a new obj.
Trigger VRAM leak by running command below
$ service gdm restart
Signed-off-by: xinhui pan <xinhui.pan@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index bebed0f307a1..46dafea8da8b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -955,8 +955,9 @@ int amdgpu_display_framebuffer_init(struct drm_device *dev,
}
for (i = 1; i < rfb->base.format->num_planes; ++i) {
+ drm_gem_object_get(rfb->base.obj[0]);
+ drm_gem_object_put(rfb->base.obj[i]);
rfb->base.obj[i] = rfb->base.obj[0];
- drm_gem_object_get(rfb->base.obj[i]);
}
return 0;
@@ -1002,6 +1003,7 @@ amdgpu_display_user_framebuffer_create(struct drm_device *dev,
return ERR_PTR(ret);
}
+ drm_gem_object_put(obj);
return &amdgpu_fb->base;
}
--
2.25.1
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