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| author | Ma Ke <make_ruc2021@163.com> | 2023-10-13 04:53:43 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-13 18:36:25 +0300 |
| commit | cd90511557fdfb394bb4ac4c3b539b007383914c (patch) | |
| tree | 9bbf8323890e567d0bdab2a3d5472e2de789386d | |
| parent | 49c775b783cb7de88461ca6c1385bd8c3e8b9b92 (diff) | |
| download | linux-cd90511557fdfb394bb4ac4c3b539b007383914c.tar.xz | |
drm/amdgpu/vkms: fix a possible null pointer dereference
In amdgpu_vkms_conn_get_modes(), the return value of drm_cvt_mode()
is assigned to mode, which will lead to a NULL pointer dereference
on failure of drm_cvt_mode(). Add a check to avoid null pointer
dereference.
Signed-off-by: Ma Ke <make_ruc2021@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c index 7148a216ae2f..db6fc0cb18eb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c @@ -239,6 +239,8 @@ static int amdgpu_vkms_conn_get_modes(struct drm_connector *connector) for (i = 0; i < ARRAY_SIZE(common_modes); i++) { mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false); + if (!mode) + continue; drm_mode_probed_add(connector, mode); } |