Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 <benjamin.cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 89cd90375c19fb45138990b70e9f4ba4806f05c4)
Cc: stable@vger.kernel.org
+2
-1
+2
-1
drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c
+2
-1
drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c
···
94
94
case IP_VERSION(2, 3, 0):
95
95
case IP_VERSION(2, 4, 0):
96
96
case IP_VERSION(2, 4, 1):
97
-
mmhub_cid = mmhub_client_ids_vangogh[cid][rw];
97
+
mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_vangogh) ?
98
+
mmhub_client_ids_vangogh[cid][rw] : NULL;
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99
break;
99
100
default:
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mmhub_cid = NULL;