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  1. JDK
  2. JDK-8229701

aarch64: C2 OSR compilation fails with "shouldn't process one node several times" in final graph reshaping

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    • Subcomponent:
    • Resolved In Build:
      master
    • CPU:
      aarch64

      Backports

        Description

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

        Found with fuzzing. Reliably reproduces on aarch64, but not on x86_64, although it is probably not architecture-specific.
        Test bundle is attached, along with sample hs_errs.

        $ ~/jdk-jdk/build/linux-aarch64-server-fastdebug/images/jdk/bin/java Test

        # A fatal error has been detected by the Java Runtime Environment:
        #
        # Internal Error (/home/shade/jdk-jdk/src/hotspot/share/opto/compile.cpp:3489), pid=3503, tid=3514
        # assert(!wq.contains(u)) failed: shouldn't process one node several times
        #
        # 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-aarch64)
        # Problematic frame:
        # V [libjvm.so+0x7a0f58] Compile::final_graph_reshaping_main_switch(Node*, Final_Reshape_Counts&, unsigned int)+0x1268
        #
        # Core dump will be written. Default location: Core dumps may be processed with "/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e %P %I %h" (or dumping to /home/shade/tests/05015/core.3503)
        #
        # 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: merino.lab2.eng.bos.redhat.com, AArch64, 46 cores, 95G, Red Hat Enterprise Linux Server release 7.6 (Maipo)
        Time: Wed Aug 14 06:39:26 2019 EDT elapsed time: 1 seconds (0d 0h 0m 1s)

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

        Current thread (0x0000ffff905ab000): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=3514, stack(0x0000ffff2cf90000,0x0000ffff2d190000)]


        Current CompileTask:
        C2: 1335 88 % ! 4 Test::vMeth @ 72 (368 bytes)

        Stack: [0x0000ffff2cf90000,0x0000ffff2d190000], sp=0x0000ffff2d18aae0, free space=2026k
        Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
        V [libjvm.so+0x7a0f58] Compile::final_graph_reshaping_main_switch(Node*, Final_Reshape_Counts&, unsigned int)+0x1268
        V [libjvm.so+0x7a1d04] Compile::final_graph_reshaping_impl(Node*, Final_Reshape_Counts&)+0x1a4
        V [libjvm.so+0x7a227c] Compile::final_graph_reshaping_walk(Node_Stack&, Node*, Final_Reshape_Counts&)+0xcc
        V [libjvm.so+0x7abc40] Compile::final_graph_reshaping()+0x3f8
        V [libjvm.so+0x7adee4] Compile::Optimize()+0xdfc
        V [libjvm.so+0x7af014] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0x10a0
        V [libjvm.so+0x61d428] C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0x114

          Attachments

          1. 05015.tar.gz
            315 kB
          2. 09697.tar.gz
            318 kB

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                • Assignee:
                  roland Roland Westrelin
                  Reporter:
                  shade Aleksey Shipilev
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                  • Created:
                    Updated:
                    Resolved: