Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8223389

Shenandoah optimizations fail with assert(!phase->exceeding_node_budget())

    XMLWordPrintable

Details

    • b20
    • Not verified

    Backports

      Description

        This seems to be perfectly reproducible with tier1_gc_shenandoah:

        # A fatal error has been detected by the Java Runtime Environment:
        #
        # Internal Error (/home/buildbot/worker/jdkX-linux/build/src/hotspot/share/opto/loopUnswitch.cpp:66), pid=2443, tid=2512
        # assert(!phase->exceeding_node_budget()) failed: sanity
        #
        # JRE version: OpenJDK Runtime Environment (13.0) (fastdebug build 13-testing+0-builds.shipilev.net-openjdk-jdk-b850-20190506-jdk-1319)
        # Java VM: OpenJDK 64-Bit Server VM (fastdebug 13-testing+0-builds.shipilev.net-openjdk-jdk-b850-20190506-jdk-1319, compiled mode, sharing, tiered, compressed oops, shenandoah gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x117d45c] IdealLoopTree::policy_unswitching(PhaseIdealLoop*) const+0x1cc

        Bisection shows it started after JDK-8216137, and it probably means Shenandoah transform miscalculated the needs for nodes?

        Attachments

          Issue Links

            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-8283099 Shenandoah optimizations fail with assert(!phase->exceeding_node_budget())

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8223502 Node estimate for loop unswitching is not correct: assert(delta <= 2 * required) failed: Bad node estimate

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8216137 assert(Compile::current()->live_nodes() < Compile::current()->max_node_limit()) failed: Live Node limit exceeded limit

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8291713 assert(!phase->exceeding_node_budget()) failed: sanity after JDK-8223389

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8215030 Disable shenandoah in Oracle builds

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

            Commit Commit openjdk/jdk11u-dev/f441970b

            Review Review openjdk/jdk11u-dev/884

            Activity

              People

                roland Roland Westrelin
                shade Aleksey Shipilev
                Votes:
                0 Vote for this issue
                Watchers:
                6 Start watching this issue

                Dates

                  Created:
                  Updated:
                  Resolved: