>-----Original Message-----
>From: dri-devel <dri-devel-boun...@lists.freedesktop.org> On Behalf Of
>Bernard Zhao
>Sent: Tuesday, April 21, 2020 7:17 AM
>To: Alex Deucher <alexander.deuc...@amd.com>; Christian König
><christian.koe...@amd.com>; David (ChunMing) Zhou
><david1.z...@amd.com>; David Airlie <airl...@linux.ie>; Daniel Vetter
><dan...@ffwll.ch>; Tom St Denis <tom.stde...@amd.com>; Ori Messinger
><ori.messin...@amd.com>; Sam Ravnborg <s...@ravnborg.org>; Bernard
>Zhao <bern...@vivo.com>; amd-gfx@lists.freedesktop.org; dri-
>de...@lists.freedesktop.org; linux-ker...@vger.kernel.org
>Cc: opensource.ker...@vivo.com
>Subject: [PATCH] amdgpu: fixes memleak issue when init failed
>
>VRAM manager and DRM MM when init failed, there is no operaction
>to free kzalloc memory & remove device file.
>This will lead to memleak & cause stability issue.
>
>Signed-off-by: Bernard Zhao <bern...@vivo.com>
>---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 24
>++++++++++++++++----
> 1 file changed, 19 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
>b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
>index 82a3299e53c0..4c5fb153e6b4 100644
>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
>@@ -175,30 +175,44 @@ static int amdgpu_vram_mgr_init(struct
>ttm_mem_type_manager *man,
> ret = device_create_file(adev->dev,
>&dev_attr_mem_info_vram_total);
> if (ret) {
> DRM_ERROR("Failed to create device file
>mem_info_vram_total\n");
>- return ret;
>+ goto VRAM_TOTAL_FAIL;
> }
> ret = device_create_file(adev->dev,
>&dev_attr_mem_info_vis_vram_total);
Have you looked at the DEVICE_ATTR mechanism?
It is set up to add device files. You won't get the granularity of each file,
but it has a lot more automatic-ness to setting this stuff up.
Mike
> if (ret) {
> DRM_ERROR("Failed to create device file
>mem_info_vis_vram_total\n");
>- return ret;
>+ goto VIS_VRAM_TOTA_FAIL;
> }
> ret = device_create_file(adev->dev,
>&dev_attr_mem_info_vram_used);
> if (ret) {
> DRM_ERROR("Failed to create device file
>mem_info_vram_used\n");
>- return ret;
>+ goto VRAM_USED_FAIL;
> }
> ret = device_create_file(adev->dev,
>&dev_attr_mem_info_vis_vram_used);
> if (ret) {
> DRM_ERROR("Failed to create device file
>mem_info_vis_vram_used\n");
>- return ret;
>+ goto VIS_VRAM_USED_FAIL;
> }
> ret = device_create_file(adev->dev,
>&dev_attr_mem_info_vram_vendor);
> if (ret) {
> DRM_ERROR("Failed to create device file
>mem_info_vram_vendor\n");
>- return ret;
>+ goto VRAM_VERDOR_FAIL;
> }
>
> return 0;
>+
>+VRAM_VERDOR_FAIL:
>+ device_remove_file(adev->dev,
>&dev_attr_mem_info_vis_vram_used);
>+VIS_VRAM_USED_FAIL:
>+ device_remove_file(adev->dev, &dev_attr_mem_info_vram_used);
>+RVAM_USED_FAIL:
>+ device_remove_file(adev->dev,
>&dev_attr_mem_info_vis_vram_total);
>+VIS_VRAM_TOTA_FAIL:
>+ device_remove_file(adev->dev, &dev_attr_mem_info_vram_total);
>+VRAM_TOTAL_FAIL:
>+ kfree(mgr);
>+ man->priv = NULL;
>+
>+ return ret;
> }
>
> /**
>--
>2.26.2
>
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