From 5d4e88bcfef29569a1db224ef15e28c603666c6d Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 4 Mar 2026 17:24:35 -0500 Subject: drm/amdgpu/mmhub3.0.1: 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 5f76083183363c4528a4aaa593f5d38c28fe7d7b) Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_1.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu') diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_1.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_1.c index 910337dc28d1..14a742d3a99d 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_1.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_1.c @@ -117,7 +117,8 @@ mmhub_v3_0_1_print_l2_protection_fault_status(struct amdgpu_device *adev, switch (amdgpu_ip_version(adev, MMHUB_HWIP, 0)) { case IP_VERSION(3, 0, 1): - mmhub_cid = mmhub_client_ids_v3_0_1[cid][rw]; + mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_v3_0_1) ? + mmhub_client_ids_v3_0_1[cid][rw] : NULL; break; default: mmhub_cid = NULL; -- cgit v1.2.3