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  1. JDK
  2. JDK-8237396

JvmtiTagMap::weak_oops_do() should not trigger barriers

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    • gc
    • b33

    Backports

      Description

        JvmtiTagMap::weak_oops_do() is used by GC, and GC wants to see raw oop, not translated by barriers.

        The method uses NativeAccess barrier to load oop, which is incorrect. This unexpected behavior results Shenandoah failure.

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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-8237716 JvmtiTagMap::weak_oops_do() should not trigger barriers

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8237720 JvmtiTagMap::weak_oops_do() should not trigger barriers

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8237729 JvmtiTagMap::weak_oops_do() should not trigger barriers

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8240452 JvmtiTagMap::weak_oops_do() should not trigger barriers

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8246607 JvmtiTagMap::weak_oops_do() should not trigger barriers

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8237638 Shenandoah fails some vmTestbase_nsk_jvmti tests with "assert(!ShenandoahThreadLocalData::is_evac_allowed(Thread::current())) failed: sanity"

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8242216 ObjectSampler::weak_oops_do() should not trigger barrier

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

            Enhancement - null JDK-8245240 Shenandoah: support nesting evacuation OOM scope

            • P3 - Major loss of function.
            • Resolved

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                zgu Zhengyu Gu
                zgu Zhengyu Gu
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                  Created:
                  Updated:
                  Resolved: