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  1. JDK
  2. JDK-8225653

Provide more information when hitting SIGILL from HaltNode

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    Backports

      Description

        There are existing usages of Halt for optimizing unsafe accesses (e.g., GraphKit::must_be_not_null), but, as a future enhancement, it would be nice to provide more information about the root cause of the crash. As an example, JDK-8219902 [1] which involved Halt execution manifested as:

           # SIGILL (0x4) at pc=0x00007f55b4df37d6, pid=15865, tid=15869
           #
           # JRE version: OpenJDK Runtime Environment (13.0+9) (build 13-ea+9)
           # Java VM: OpenJDK 64-Bit Server VM (13-ea+9, mixed mode, sharing,
        tiered, compressed oops, g1 gc, linux-amd64)
           # Problematic frame:
           # J 10152 c2
        com.sun.tools.javac.tree.Pretty.visitLiteral(Lcom/sun/tools/javac/tree/JCTree$JCLiteral;)V
        jdk.compiler at 13-ea (282 bytes) @ 0x00007f55b4df37d6
        [0x00007f55b4df07a0+0x0000000000003036]

        Without laborous analysis of generated code, it's impossible to say
        whether it's a JVM bug or a problem in user code. I believe JVM can do better in such situations and print meaningful error message instead when crashing.

        http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2019-June/034194.html

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8245749 Provide more information when hitting SIGILL from HaltNode

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8246829 Provide more information when hitting SIGILL from HaltNode

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8252836 Provide more information when hitting SIGILL from HaltNode

            • P3 - Major loss of function.
            • Resolved
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8224658 Unsafe access C2 compile fails with assert(flat != TypePtr::BOTTOM) failed: cannot alias-analyze an untyped ptr: adr_type = NULL

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8230762 Change MacroAssembler::debug32/64 to use fatal instead of assert

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8231430 C2: Memory stomp in max_array_length() for T_ILLEGAL type

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8231720 Some perf regressions after 8225653

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8260338 Some fields in HaltNode is not cloned

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8229495 SIGILL in C2 generated OSR compilation

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Enhancement - null JDK-8230552 Provide information when hitting a HaltNode for architectures other than x86

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

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                chagedorn Christian Hagedorn
                thartmann Tobias Hartmann
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                  Created:
                  Updated:
                  Resolved: