From 68bbca15e7062f4ae16531e29893f78d0b4840b6 Mon Sep 17 00:00:00 2001 From: Peikang Zhang Date: Mon, 20 Jan 2020 09:25:15 -0500 Subject: [PATCH] drm/amd/display: dc_get_vmid_use_vector() crashes when get called [Why] int i can go out of boundary which will cause crash [How] Fixed the maximum value of i to avoid i going out of boundary Signed-off-by: Peikang Zhang Reviewed-by: Jun Lei Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c b/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c index a96d8de9380e..f2b39ec35c89 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c @@ -62,7 +62,7 @@ int dc_get_vmid_use_vector(struct dc *dc) int i; int in_use = 0; - for (i = 0; i < dc->vm_helper->num_vmid; i++) + for (i = 0; i < MAX_HUBP; i++) in_use |= dc->vm_helper->hubp_vmid_usage[i].vmid_usage[0] | dc->vm_helper->hubp_vmid_usage[i].vmid_usage[1]; return in_use; -- 2.25.1