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  1. JDK
  2. JDK-8219698

aarch64: SIGILL triggered when specifying unsupported hardware features

    Details

    • Subcomponent:
    • Resolved In Build:
      b10
    • CPU:
      aarch64
    • OS:
      generic

      Backports

        Description

        One example:

        On AArch64 LSE instructions is not supported on ARMv8 platform.
        SIGILL is triggered on ARMv8 platform by the following command:

        $ java -XX:+UseLSE -version

        OpenJDK 64-Bit Server VM warning: UseLSE specified, but not supported on this CPU
        #
        # A fatal error has been detected by the Java Runtime Environment:
        #
        # SIGILL (0x4) at pc=0x0000ffff76b76088, pid=6950, tid=6951
        #
        # JRE version: (13.0) (build )
        # Java VM: OpenJDK 64-Bit Server VM (13-internal+0-adhoc.yangfei.jdk-jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-aarch64)
        # Problematic frame:
        # j java.lang.ThreadGroup.add(Ljava/lang/ThreadGroup;)V+0 java.base
        #
        # No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
        #
        # An error report file with more information is saved as:
        # /home/yangfei/hs_err_pid6950.log
        Could not load hsdis-aarch64.so; library not loadable; PrintAssembly is disabled
        #
        # If you would like to submit a bug report, please visit:
        # http://bugreport.java.com/bugreport/crash.jsp
        #
        Aborted


        Simple fix:

        diff -r 1ee9149df76f src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
        --- a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp Mon Feb 25 16:05:06 2019 -0800
        +++ b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp Wed Feb 27 10:44:59 2019 +0800
        @@ -258,8 +258,10 @@
           if (FLAG_IS_DEFAULT(UseCRC32)) {
             UseCRC32 = (auxv & HWCAP_CRC32) != 0;
           }
        +
           if (UseCRC32 && (auxv & HWCAP_CRC32) == 0) {
             warning("UseCRC32 specified, but not supported on this CPU");
        + FLAG_SET_DEFAULT(UseCRC32, false);
           }

           if (FLAG_IS_DEFAULT(UseAdler32Intrinsics)) {
        @@ -277,6 +279,7 @@
           } else {
             if (UseLSE) {
               warning("UseLSE specified, but not supported on this CPU");
        + FLAG_SET_DEFAULT(UseLSE, false);
             }
           }

        @@ -291,9 +294,11 @@
           } else {
             if (UseAES) {
               warning("UseAES specified, but not supported on this CPU");
        + FLAG_SET_DEFAULT(UseAES, false);
             }
             if (UseAESIntrinsics) {
               warning("UseAESIntrinsics specified, but not supported on this CPU");
        + FLAG_SET_DEFAULT(UseAESIntrinsics, false);
             }
           }

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                • Assignee:
                  fyang Fei Yang
                  Reporter:
                  fyang Fei Yang
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                  • Created:
                    Updated:
                    Resolved: