diff options
| author | Evan Quan <evan.quan@amd.com> | 2019-01-08 10:33:35 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 15:04:26 -0500 |
| commit | c81e42f036232cdb30de0b6294ec82f797958bc9 (patch) | |
| tree | 55288f3b45b98d589cc91681cbf6534776c9e6a1 | |
| parent | 45b35ee02162d149e4de3a1d8d4847621fb92c20 (diff) | |
drm/amd/powerplay: avoid possible buffer overflow
Make sure the clock level enforced is within the allowed
ranges.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c index 8f6097c6a02b..c2061d351d04 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c @@ -2251,6 +2251,13 @@ static int vega20_force_clock_level(struct pp_hwmgr *hwmgr, soft_min_level = mask ? (ffs(mask) - 1) : 0; soft_max_level = mask ? (fls(mask) - 1) : 0; + if (soft_max_level >= data->dpm_table.gfx_table.count) { + pr_err("Clock level specified %d is over max allowed %d\n", + soft_max_level, + data->dpm_table.gfx_table.count - 1); + return -EINVAL; + } + data->dpm_table.gfx_table.dpm_state.soft_min_level = data->dpm_table.gfx_table.dpm_levels[soft_min_level].value; data->dpm_table.gfx_table.dpm_state.soft_max_level = @@ -2271,6 +2278,13 @@ static int vega20_force_clock_level(struct pp_hwmgr *hwmgr, soft_min_level = mask ? (ffs(mask) - 1) : 0; soft_max_level = mask ? (fls(mask) - 1) : 0; + if (soft_max_level >= data->dpm_table.mem_table.count) { + pr_err("Clock level specified %d is over max allowed %d\n", + soft_max_level, + data->dpm_table.mem_table.count - 1); + return -EINVAL; + } + data->dpm_table.mem_table.dpm_state.soft_min_level = data->dpm_table.mem_table.dpm_levels[soft_min_level].value; data->dpm_table.mem_table.dpm_state.soft_max_level = |