From: Alex Deucher Date: Wed, 4 Mar 2026 22:24:10 +0000 (-0500) Subject: drm/amdgpu/mmhub2.3: add bounds checking for cid X-Git-Tag: v7.0-rc5~14^2~1^2~10 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a54403a534972af5d9ba5aaa3bb6ead612500ec6;p=thirdparty%2Fkernel%2Fstable.git 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: Benjamin Cheng Signed-off-by: Alex Deucher (cherry picked from commit 89cd90375c19fb45138990b70e9f4ba4806f05c4) Cc: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c index 5eb8122e27469..ceb2f6b46de52 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c @@ -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;