From 3cdd405831d8cc50a5eae086403402697bb98a4a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 4 Mar 2026 17:25:56 -0500 Subject: drm/amdgpu/mmhub4.1.0: 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: Benjamin Cheng Signed-off-by: Alex Deucher (cherry picked from commit 04f063d85090f5dd0c671010ce88ee49d9dcc8ed) Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c index 951998454b25..88bfe321f83a 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c @@ -102,7 +102,8 @@ mmhub_v4_1_0_print_l2_protection_fault_status(struct amdgpu_device *adev, status); switch (amdgpu_ip_version(adev, MMHUB_HWIP, 0)) { case IP_VERSION(4, 1, 0): - mmhub_cid = mmhub_client_ids_v4_1_0[cid][rw]; + mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_v4_1_0) ? + mmhub_client_ids_v4_1_0[cid][rw] : NULL; break; default: mmhub_cid = NULL; -- cgit v1.2.3