From: Alex Deucher Date: Wed, 4 Mar 2026 22:25:09 +0000 (-0500) Subject: drm/amdgpu/mmhub3.0.2: add bounds checking for cid X-Git-Tag: v7.0-rc5~14^2~1^2~8 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e5e6d67b1ce9764e67aef2d0eef9911af53ad99a;p=thirdparty%2Fkernel%2Fstable.git drm/amdgpu/mmhub3.0.2: 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 1441f52c7f6ae6553664aa9e3e4562f6fc2fe8ea) Cc: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c index f0f182f033b98..e1f07f2a18527 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c @@ -108,7 +108,8 @@ mmhub_v3_0_2_print_l2_protection_fault_status(struct amdgpu_device *adev, "MMVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n", status); - mmhub_cid = mmhub_client_ids_v3_0_2[cid][rw]; + mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_v3_0_2) ? + mmhub_client_ids_v3_0_2[cid][rw] : NULL; dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n", mmhub_cid ? mmhub_cid : "unknown", cid); dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",