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| author | Anson Jacob <[email protected]> | 2021-03-03 17:33:15 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2021-03-24 03:00:57 +0000 |
| commit | 50e2fc36e72d4ad672032ebf646cecb48656efe0 (patch) | |
| tree | 71c4cea7ffa56520eadd17b42ab52510fec11613 /drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | |
| parent | drm/amdgpu: Increase PSP runtime TMR region size (diff) | |
| download | kernel-50e2fc36e72d4ad672032ebf646cecb48656efe0.tar.gz kernel-50e2fc36e72d4ad672032ebf646cecb48656efe0.zip | |
drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up
doing a shift operation where the number of bits shifted equals
number of bits in the operand. This behaviour is undefined.
Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the
count is >= number of bits in the operand.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472
Reported-by: Lyude Paul <[email protected]>
Signed-off-by: Anson Jacob <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Reviewed-by: Felix Kuehling <[email protected]>
Tested-by: Lyude Paul <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c')
0 files changed, 0 insertions, 0 deletions