tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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drm/amdgpu/mmhub4.2.0: 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 <benjamin.cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Alex Deucher dea5f235 04f063d8

+2 -1
+2 -1
drivers/gpu/drm/amd/amdgpu/mmhub_v4_2_0.c
··· 728 728 status); 729 729 switch (amdgpu_ip_version(adev, MMHUB_HWIP, 0)) { 730 730 case IP_VERSION(4, 2, 0): 731 - mmhub_cid = mmhub_client_ids_v4_2_0[cid][rw]; 731 + mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_v4_2_0) ? 732 + mmhub_client_ids_v4_2_0[cid][rw] : NULL; 732 733 break; 733 734 default: 734 735 mmhub_cid = NULL;