Commit a54403a5 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/mmhub2.3: add bounds checking for cid 



The value should never exceed the array size as those
are the only values the hardware is expected to return,
but add checks anyway.

Reviewed-by: default avatarBenjamin Cheng <benjamin.cheng@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 89cd9037)
Cc: stable@vger.kernel.org
parent 0b26edac

drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c

+2 −1
Original line number Diff line number Diff line
@@ -94,7 +94,8 @@ mmhub_v2_3_print_l2_protection_fault_status(struct amdgpu_device *adev, 
	case IP_VERSION(2, 3, 0):

	case IP_VERSION(2, 4, 0):

	case IP_VERSION(2, 4, 1):

		mmhub_cid = mmhub_client_ids_vangogh[cid][rw];

		mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_vangogh) ?

			mmhub_client_ids_vangogh[cid][rw] : NULL;

		break;

	default:

		mmhub_cid = NULL;