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| author |   Alex Hung <alex.hung@amd.com> | 2023-01-11 09:54:11 -0700 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2023-02-28 14:29:35 -0500 |
| commit | b4ceeffd13870b641a284ffb0f6fb4ffe19b0b14 (patch) | |
| tree | 6fd827aaae9b9bd8948cf2c8047c0d9d1cd345a4 /drivers/gpu/drm/amd/display/modules | |
| parent | drm/amd/display: Ext displays with dock can't recognized after resume (diff) | |
| download | wireguard-linux-b4ceeffd13870b641a284ffb0f6fb4ffe19b0b14.tar.xz wireguard-linux-b4ceeffd13870b641a284ffb0f6fb4ffe19b0b14.zip | |
drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes
[WHY]
When PTEBufferSizeInRequests is zero, UBSAN reports the following
warning because dml_log2 returns an unexpected negative value:
shift exponent 4294966273 is too large for 32-bit type 'int'
[HOW]
In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and
assign the result directly.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules')
0 files changed, 0 insertions, 0 deletions