When running with ubsan enabled on Linux x86_64, I get in the HS :tier1 tests this error :

runtime/ErrorHandling/TestDwarf_dontCheckDecoder.jtr

/jdk/src/hotspot/share/utilities/vmError.cpp:2090:26: runtime error: division by zero
    #0 0x7f16bc531f32 in crash_with_sigfpe /jdk/src/hotspot/share/utilities/vmError.cpp:2090
    #1 0x7f16bc531f32 in VMError::controlled_crash(int) /jdk/src/hotspot/share/utilities/vmError.cpp:2137
    #2 0x7f16bea2d8fd in JNI_CreateJavaVM_inner /jdk/src/hotspot/share/prims/jni.cpp:3621
    #3 0x7f16bea2d8fd in JNI_CreateJavaVM /jdk/src/hotspot/share/prims/jni.cpp:3672
    #4 0x7f16c5dbd0e5 in InitializeJVM /jdk/src/java.base/share/native/libjli/java.c:1550
    #5 0x7f16c5dbd0e5 in JavaMain /jdk/src/java.base/share/native/libjli/java.c:491
    #6 0x7f16c5dc6748 in ThreadJavaMain /jdk/src/java.base/unix/native/libjli/java_md.c:642
    #7 0x7f16c5d756e9 in start_thread (/lib64/libpthread.so.0+0xa6e9) (BuildId: 2f8d3c2d0f4d7888c2598d2ff6356537f5708a73)
    #8 0x7f16c531550e in clone (/lib64/libc.so.6+0x11850e) (BuildId: f732026552f6adff988b338e92d466bc81a01c37)

Reason is that we do a float division by zero to get a signal . This is desired by us so not really an error but ubsan cannot know this.