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  1. JDK
  2. JDK-8229499

Node budget assert in fuzzed test

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      (synopsis is provisional, please change as you see fit).

      Found by fuzzing. Test bundle is attached. Crashes every time for me:

      $ ~/trunks/jdk-jdk/build/linux-x86_64-server-fastdebug/images/jdk/bin/java Test

      #
      # A fatal error has been detected by the Java Runtime Environment:
      #
      # Internal Error (/home/shade/trunks/jdk-jdk/src/hotspot/share/opto/loopnode.hpp:1410), pid=22965, tid=22976
      # assert(C->live_nodes() - live_at_begin <= 2 * _nodes_required) failed: Bad node estimate: actual = 768 >> request = 166
      #
      # JRE version: OpenJDK Runtime Environment (14.0) (fastdebug build 14-internal+0-adhoc.shade.jdk-jdk)
      # Java VM: OpenJDK 64-Bit Server VM (fastdebug 14-internal+0-adhoc.shade.jdk-jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
      # Problematic frame:
      # V [libjvm.so+0x11e762a] AutoNodeBudget::~AutoNodeBudget()+0x1ba
      #
      # Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport %p %s %c %d %P" (or dumping to /home/shade/trunks/JavaFuzzer/tests/08508/core.22965)
      #
      # If you would like to submit a bug report, please visit:
      # http://bugreport.java.com/bugreport/crash.jsp
      #

      --------------- S U M M A R Y ------------

      Command Line: Test

      Host: shade-desktop, Intel(R) Core(TM) i7-7820X CPU @ 3.60GHz, 16 cores, 125G, Ubuntu 18.04.3 LTS
      Time: Tue Aug 13 21:39:29 2019 CEST elapsed time: 0 seconds (0d 0h 0m 0s)

      --------------- T H R E A D ---------------

      Current thread (0x00007f2708596000): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=22976, stack(0x00007f26a815e000,0x00007f26a825f000)]


      Current CompileTask:
      C2: 245 65 ! 4 Test::iMeth (538 bytes)

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              • Assignee:
                phedlin Patric Hedlin
                Reporter:
                shade Aleksey Shipilev
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                • Created:
                  Updated: