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  1. JDK
  2. JDK-8287227

Shenandoah: A couple of virtual thread tests failed with iu mode even without Loom enabled.

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    • gc
    • b04

    Backports

      Description

        serviceability/jvmti/vthread/SuspendResume1/SuspendResume1.java
        serviceability/jvmti/vthread/VThreadTest/VThreadTest.java

        Failed without Loom enabled.

        To reproduce:
        make CONF=linux-x86_64-server-fastdebug TEST_VM_OPTS="-XX:+UseShenandoahGC -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCMode=iu" run-test TEST=hotspot_loom

        #
        # Internal Error (/home/zgu/ws/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp:2666), pid=717559, tid=717606
        # Error: assert(new_mem->outcnt() > 0) failed
        #
        # JRE version: OpenJDK Runtime Environment (19.0) (fastdebug build 19-internal-adhoc.zgu.jdk)
        # Java VM: OpenJDK 64-Bit Server VM (fastdebug 19-internal-adhoc.zgu.jdk, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, shenandoah gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x1a17564] MemoryGraphFixer::fix_mem(Node*, Node*, Node*, Node*, Node*, Unique_Node_List&)+0xc14







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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-8310842 Shenandoah: A couple of virtual thread tests failed with iu mode even without Loom enabled.

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8288129 Shenandoah: Skynet test crashed with iu + aggressive

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

            Enhancement - null JDK-8277654 Shenandoah: Don't produce new memory state in C2 LRB runtime call

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

            Commit Commit openjdk/jdk17u-dev/5021a078

            Commit Commit openjdk/jdk/210a06a2

            Review Review openjdk/jdk17u-dev/1479

            Review Review openjdk/jdk/8958

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                roland Roland Westrelin
                zgu Zhengyu Gu
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                Dates

                  Created:
                  Updated:
                  Resolved: