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  1. JDK
  2. JDK-8227407

ZGC: C2 loads and load barriers can get separated by safepoints

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    • 13
    • b32
    • x86_64
    • linux
    • Verified

    Backports

      Description

        The following test failed in the JDK14 CI:

        vmTestbase/vm/gc/compact/Compact_NonbranchyTree_ArrayOf/TestDescription.java

        Here's a snippet from the log file:

        # Internal Error (open/src/hotspot/share/compiler/oopMap.cpp:392), pid=14189, tid=14207
        # assert(Universe::heap()->is_in_or_null(*loc)) failed: found non oop pointer
        #
        # JRE version: Java(TM) SE Runtime Environment (14.0+5) (fastdebug build 14-ea+5-112)
        # Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 14-ea+5-112, mixed mode, tiered, z gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x13cdd31] OopMapSet::oops_do(frame const*, RegisterMap const*, OopClosure*)+0x641

        Please note that this CI job is from 2019.07.05 which
        is after the fix for JDK-8225642 was pushed to jdk/jdk.

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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-8228737 ZGC: C2 loads and load barriers can get separated by safepoints

            • 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-8228811 ZGC: C2 loads and load barriers can get separated by safepoints

            • 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-8229085 ZGC: C2 loads and load barriers can get separated by safepoints

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8227809 vm/gc/containers/Combination01 failed "guarantee(ZAddress::is_good(value)) failed: Bad oop 0x000008002d7ee210 found at 0x00007f64f53f16e8, expected 0x000010002d7ee210"

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8228443 ZGC: Kitchensink.java fails assert

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8225642 ZGC: Crash due to bad oops being spilled to stack in load barriers

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

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                eosterlund Erik Österlund
                dcubed Daniel Daugherty
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                Dates

                  Created:
                  Updated:
                  Resolved: