| From 1774b1f4224b3b81010e25a470cbc532552c70a5 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Mon, 20 May 2024 09:05:21 -0400 |
| Subject: drm/amdgpu: fix UBSAN warning in kv_dpm.c |
| |
| From: Alex Deucher <alexander.deucher@amd.com> |
| |
| [ Upstream commit f0d576f840153392d04b2d52cf3adab8f62e8cb6 ] |
| |
| Adds bounds check for sumo_vid_mapping_entry. |
| |
| Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3392 |
| Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> |
| Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
| Cc: stable@vger.kernel.org |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/gpu/drm/amd/amdgpu/kv_dpm.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| diff --git a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c |
| index 6eb6f05c11367..56e15f5bc8225 100644 |
| --- a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c |
| +++ b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c |
| @@ -163,6 +163,8 @@ static void sumo_construct_vid_mapping_table(struct amdgpu_device *adev, |
| |
| for (i = 0; i < SUMO_MAX_HARDWARE_POWERLEVELS; i++) { |
| if (table[i].ulSupportedSCLK != 0) { |
| + if (table[i].usVoltageIndex >= SUMO_MAX_NUMBER_VOLTAGES) |
| + continue; |
| vid_mapping_table->entries[table[i].usVoltageIndex].vid_7bit = |
| table[i].usVoltageID; |
| vid_mapping_table->entries[table[i].usVoltageIndex].vid_2bit = |
| -- |
| 2.43.0 |
| |
