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

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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 <benjamin.cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 89cd90375c19fb45138990b70e9f4ba4806f05c4)
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher
2026-03-04 17:24:10 -05:00
parent 0b26edac4a
commit a54403a534
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c
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@@ -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;