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| author | Leo Liu <leo.liu@amd.com> | 2018-06-25 14:56:06 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-06-27 14:33:19 -0500 |
| commit | d9e98ee248b04b2462e7411b204d420d04f1ba27 (patch) | |
| tree | 8e3f0618edbaefafbc2debe74c3766bfcfa74122 /drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | |
| parent | 38e624a18f9a05b8c894409be6b14709a7206c7c (diff) | |
drm/amdgpu: fix UBSAN: Undefined behaviour for amdgpu_fence.c
Here is the UBSAN dump:
[ 3.866656] index 2 is out of range for type 'amdgpu_uvd_inst [2]'
[ 3.866693] Workqueue: events work_for_cpu_fn
[ 3.866702] Call Trace:
[ 3.866710] dump_stack+0x85/0xc5
[ 3.866719] ubsan_epilogue+0x9/0x40
[ 3.866727] __ubsan_handle_out_of_bounds+0x89/0x90
[ 3.866737] ? rcu_read_lock_sched_held+0x58/0x60
[ 3.866746] ? __kmalloc+0x26c/0x2d0
[ 3.866846] amdgpu_fence_driver_start_ring+0x259/0x280 [amdgpu]
[ 3.866896] amdgpu_ring_init+0x12c/0x710 [amdgpu]
[ 3.866906] ? sprintf+0x42/0x50
[ 3.866956] amdgpu_gfx_kiq_init_ring+0x1bc/0x3a0 [amdgpu]
[ 3.867009] gfx_v8_0_sw_init+0x1ad3/0x2360 [amdgpu]
[ 3.867062] ? smu7_init+0xec/0x160 [amdgpu]
[ 3.867109] amdgpu_device_init+0x112c/0x1dc0 [amdgpu]
'ring->me' might be set as 2 with 'amdgpu_gfx_kiq_init_ring', that would
cause out of range for 'amdgpu_uvd_inst[2]'.
v2: simplified with ring type
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c')
0 files changed, 0 insertions, 0 deletions