Commit 68bbca15 authored Jan 20, 2020 by Peikang Zhang Committed by Alex Deucher Feb 06, 2020

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 <peikang.zhang@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 76c332c3

drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

Admin message