drm/amd/display: Relax DML frame limit with UBSAN

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[WHY]
UBSAN instrumentation adds checks and handler calls and increases
stack usage in the large DML calculation functions, similar to
KASAN and KCSAN. With UBSAN enabled these files exceed the default
-Wframe-larger-than limit and fail to build when -Werror is in effect.

Reproduced with LLVM (make LLVM=1, clang 19.1.1), CONFIG_UBSAN=y,
CONFIG_GCOV_PROFILE_ALL=y and CONFIG_DRM_AMDGPU_WERROR=y on x86_64.

[HOW]
Include CONFIG_UBSAN in the sanitizer check that selects the
higher per-file frame warning limit in the dml and dml2_0
Makefiles.

Suggested-by: Leo Li <sunpeng.li@amd.com>
Assisted-by: Copilot:Claude-Opus-5.5
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Alex Hung 2026-09-23 11:31:18 -06:00 • committed by Alex Deucher

parent f05e235a54

commit ebf8b0fd85

2 changed files with 2 additions and 2 deletions

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2

drivers/gpu/drm/amd/display/dc/dml/Makefile

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2

drivers/gpu/drm/amd/display/dc/dml2_0/Makefile

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