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  1. JDK
  2. JDK-8244420

Shenandoah: Ensure _disarmed_value offset < 128

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    • gc
    • b22

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      Description

        Aleksey discovered if the offset exceeds 128, nmethod entry barrier verifier will fail as following:

        # Internal Error (/home/shade/trunks/jdk-jdk/src/hotspot/cpu/x86/gc/shared/barrierSetNMethod_x86.cpp:66), pid=2763, tid=2780
        # fatal error: Not properly aligned

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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-8245324 Shenandoah: Ensure _disarmed_value offset < 128

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8245883 Shenandoah: Ensure _disarmed_value offset < 128

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

            Enhancement - null JDK-8287686 Add assertion to ensure that disarm value offset < 128

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

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                zgu Zhengyu Gu
                zgu Zhengyu Gu
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