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  1. JDK
  2. JDK-8246051

[aarch64] SIGBUS by unaligned Unsafe compare_and_swap

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    • b30
    • aarch64

    Backports

      Description

        On aarch64, SIGBUS happens when Unsafe compareAndSwapLong and compareAndSwapInt are used to access unaligned mem address.
        # A fatal error has been detected by the Java Runtime Environment:
        #
        # SIGBUS (0x7) at pc=0x0000ffffb164c9f8, pid=12497, tid=12498
        #
        # JRE version: OpenJDK Runtime Environment (15.0) (build 15-internal+0-adhoc.zhuorenwz.jdk)
        # Java VM: OpenJDK 64-Bit Server VM (15-internal+0-adhoc.zhuorenwz.jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-aarch64)
        # Problematic frame:
        # V [libjvm.so+0xc7a9f8] Unsafe_CompareAndSetInt+0xb8
        This crash only happens in interpreter, and in C1/C2 compiled code InternalError will be thrown. InternalError should also be thrown in interpreter.
        It can be reproduced by the attached files.

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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-8248489 [aarch64] SIGBUS by unaligned Unsafe compare_and_swap

            • 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-8250122 [aarch64] SIGBUS by unaligned Unsafe compare_and_swap

            • 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-8250421 [aarch64] SIGBUS by unaligned Unsafe compare_and_swap

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8248570 Incorrect copyright header in TestUnsafeUnalignedSwap.java

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8252835 Revert fix for JDK-8246051

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8249092 InternalError: a fault occurred in a recent unsafe memory access operation in compiled Java code

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

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                wzhuo Wang Zhuo
                wzhuo Wang Zhuo
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                  Updated:
                  Resolved: