From 2cc4a5914ce952d6fc83b0f8089a23095ad4f677 Mon Sep 17 00:00:00 2001 From: Alexey Kodanev Date: Tue, 4 Oct 2022 11:14:01 +0300 Subject: [PATCH] drm/amd/pm: vega10_hwmgr: fix potential off-by-one overflow in 'performance_levels' Since 'hardwareActivityPerformanceLevels' is set to the size of the 'performance_levels' array in vega10_hwmgr_backend_init(), using the '<=' assertion to check for the next index value is incorrect. Replace it with '<'. Detected using the static analysis tool - Svace. Fixes: f83a9991648b ("drm/amd/powerplay: add Vega10 powerplay support (v5)") Reviewed-by: Evan Quan Signed-off-by: Alexey Kodanev Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c index 99bfe5efe171..c8c9fb827bda 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c @@ -3155,7 +3155,7 @@ static int vega10_get_pp_table_entry_callback_func(struct pp_hwmgr *hwmgr, return -1); PP_ASSERT_WITH_CODE( - (vega10_ps->performance_level_count <= + (vega10_ps->performance_level_count < hwmgr->platform_descriptor. hardwareActivityPerformanceLevels), "Performance levels exceeds Driver limit!",