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| author | Anson Jacob <Anson.Jacob@amd.com> | 2021-03-03 12:33:15 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-03-23 23:00:57 -0400 |
| commit | 50e2fc36e72d4ad672032ebf646cecb48656efe0 (patch) | |
| tree | 71c4cea7ffa56520eadd17b42ab52510fec11613 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | |
| parent | 47bfa5f60fbfd7a1c5b4d5ba8c1ab45bc9c81bc8 (diff) | |
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 <lyude@redhat.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h')
0 files changed, 0 insertions, 0 deletions