diff options
| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2019-09-03 03:16:47 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-13 17:41:29 -0500 |
| commit | d094aea312580f12232b546523dae20f54445469 (patch) | |
| tree | e2e487aebcecea8ce9a085de8738e29e5c154b67 /drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | |
| parent | d5ea093eebf022ec69970107db45dc06318d7e5a (diff) | |
| download | linux-d094aea312580f12232b546523dae20f54445469.tar.bz2 | |
drm/amdgpu: set ip specific ras interface pointer to NULL after free it
to prevent access to dangling pointers
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c index 4aabb0d9bae5..5e759a877fdf 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c @@ -1728,14 +1728,18 @@ static int sdma_v4_0_late_init(void *handle) if (r) goto late_fini; } - } else - kfree(adev->sdma.ras_if); + } else { + /* free sdma ras_if if sdma ras is not supported */ + r = 0; + goto free; + } return 0; late_fini: amdgpu_ras_late_fini(adev, adev->sdma.ras_if, &ih_info); free: kfree(adev->sdma.ras_if); + adev->sdma.ras_if = NULL; return r; } |