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  1. JDK
  2. JDK-8138966

Intermittent SEGV running ParallelGC

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Details

    • Bug
    • Resolution: Fixed
    • P3
    • 9
    • 9
    • hotspot
    • Partner X aarch64 hardware

    • gc
    • b94
    • aarch64
    • linux

    Backports

      Description

        We are seeing intermittent SEGVs running specjbb2013 with both aarch64 jdk8 port (built from ssh://enevill@hg.openjdk.java.net/aarch64-port/jdk8u) and jdk9 (built from ssh://enevill@hg.openjdk.java.net/jdk9/hs-comp).

        This crash only occurs on Partner X hardware.

        Prebuilt binaries which exhibit the problem may be downloaded from

        http://openjdk.linaro.org/releases/jdk8u-server-release-1509.tar.xz

        http://openjdk.linaro.org/releases/jdk9-server-release-1508.tar.xz

        A sample hs_err log is attached below.

        This only occurs with UseParallelGC so it happens by default with jdk8 but only happens with jdk9 with -XX:+UseParallelGC

        The frequency of the crash is about one in 10 runs.

        The command used to invoke specjbb2013 is

        java -Xmx50g -Xms50g -Xmn40g -Dspecjbb.forkjoin.workers=48 -jar specjbb2013.jar -m COMPOSITE

        (note: if using jdk9 you also need -XX:+UseParallelGC to observe the problem)

        Attachments

          1. hs_err_pid12209.log
            81 kB
            Ed Nevill
          2. hs_err_pid26881.log
            172 kB
            Ed Nevill

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                aph Andrew Haley
                enevill Ed Nevill
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                  Updated:
                  Resolved:

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