diff options
| author | Jesse Zhang <jesse.zhang@amd.com> | 2024-04-30 10:29:08 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-04-30 10:04:09 -0400 |
| commit | 12c6967428a099bbba9dfd247bb4322a984fcc0b (patch) | |
| tree | 25c22a4f5799abcb5a6eb89a4a3feb0b5d28dc74 /drivers/gpu/drm/amd/pm/powerplay | |
| parent | 6e46b89f40e39e2054f2e179e8e8c3132e7a9d57 (diff) | |
drm/amd/pm: fix the Out-of-bounds read warning
using index i - 1U may beyond element index
for mc_data[] when i = 0.
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Reviewed-by: Tim Huang <Tim.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/pm/powerplay')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c index b1b4c09c3467..b56298d9da98 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c @@ -73,8 +73,9 @@ static int atomctrl_retrieve_ac_timing( j++; } else if ((table->mc_reg_address[i].uc_pre_reg_data & LOW_NIBBLE_MASK) == DATA_EQU_PREV) { - table->mc_reg_table_entry[num_ranges].mc_data[i] = - table->mc_reg_table_entry[num_ranges].mc_data[i-1]; + if (i) + table->mc_reg_table_entry[num_ranges].mc_data[i] = + table->mc_reg_table_entry[num_ranges].mc_data[i-1]; } } num_ranges++; |