Today I tried compiling the kernel from source, with option KUBSAN GENERIC kernel build suceeded. Above is the error log.
/usr/src/sys/dev/pci/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c:1854:13: error: stack frame size (2120) exceeds limit (2047) in 'DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation' [-Werror,-Wframe-larger-than] static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation( ^ 1080/2120 (50.94%) spills, 1040/2120 (49.06%) variables /usr/src/sys/dev/pci/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c:3286:6: error: stack frame size (2872) exceeds limit (2047) in 'dml20_ModeSupportAndSystemConfigurationFull' [-Werror,-Wframe-larger-than] void dml20_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib) ^ 1726/2872 (60.10%) spills, 1146/2872 (39.90%) variables 1 error generated. /usr/src/sys/dev/pci/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c:3393:6: error: stack frame size (2888) exceeds limit (2047) in 'dml20v2_ModeSupportAndSystemConfigurationFull' [-Werror,-Wframe-larger-than] void dml20v2_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib) ^ 1679/2888 (58.14%) spills, 1209/2888 (41.86%) variables /usr/src/sys/dev/pci/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c:3520:6: error: stack frame size (2856) exceeds limit (2047) in 'dml21_ModeSupportAndSystemConfigurationFull' [-Werror,-Wframe-larger-than] void dml21_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib) ^ 1878/2856 (65.76%) spills, 978/2856 (34.24%) variables 1 error generated. 1 error generated. /usr/src/sys/dev/pci/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c:3543:6: error: stack frame size (4040) exceeds limit (2047) in 'dml30_ModeSupportAndSystemConfigurationFull' [-Werror,-Wframe-larger-than] void dml30_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib) ^ 2613/4040 (64.68%) spills, 1427/4040 (35.32%) variables /usr/src/sys/dev/pci/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c:6497:32: error: stack frame size (2472) exceeds limit (2047) in 'UseMinimumDCFCLK' [-Werror,-Wframe-larger-than] static noinline_for_stack void UseMinimumDCFCLK( ^ 1423/2472 (57.56%) spills, 1049/2472 (42.44%) variables 3 errors generated. *** Error 1 in /sys/arch/amd64/compile/CUSTOM (Makefile:2311 'display_mode_vba_30.o') *** Error 1 (Makefile:2307 'display_mode_vba_21.o') *** Error 1 (Makefile:2303 'display_mode_vba_20v2.o') *** Error 1 (Makefile:2299 'display_mode_vba_20.o')