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  1. JDK
  2. JDK-8170395

Metaspace initialization queries the wrong chunk freelist

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Details

    • Bug
    • Resolution: Fixed
    • P2
    • 9
    • 9
    • hotspot
    • gc
    • b150
    • Verified

    Backports

      Description

        The fix for JDK-8169931 introduced a new assert to ensure that we always try to allocate chunks that are any of the three fixed sizes (specialized, small, medium) or a humongous chunk (if it is larger then the medium chunk size).

        During metaspace initialization an initial metaspace chunk is allocated. The size of some of the metaspace instances can be specified on the command line. For example:
        java -XX:InitialBootClassLoaderMetaspaceSize=30720 -version

        If this size is smaller than the medium chunk size and at the same time doesn't match the specialized or small chunk size, then we end up hitting the assert mentioned above:
        #
        # Internal Error (/scratch/opt/jprt/T/P1/142848.erik/s/hotspot/src/share/vm/memory/metaspace.cpp:2359), pid=31643, tid=31646
        # assert(size > free_chunks(MediumIndex)->size()) failed: Not a humongous chunk
        #

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            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-8196248 Metaspace initialization queries the wrong chunk freelist

            • 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-8201042 Metaspace initialization queries the wrong chunk freelist

            • 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-8203087 Metaspace initialization queries the wrong chunk freelist

            • 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-8193239 Metaspace initialization queries the wrong chunk freelist

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8170355 [BACKOUT] 8k class metaspace chunks misallocated from 4k chunk freelist

            • P3 - Major loss of function.
            • Resolved

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                stefank Stefan Karlsson
                stefank Stefan Karlsson
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                  Created:
                  Updated:
                  Resolved: