java -Xmx1G -XX:+IgnoreUnrecognizedVMOptions -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,*Test*::* -Xcomp Test_435.java

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/opt/mach5/mesos/work_dir/slaves/2a0767be-5c1b-4719-9b4f-f71b11137965-S767/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/8ef8d80a-a971-4815-89f8-1bc6ae0ee890/runs/e44c5d98-ed9c-44dc-a5a0-7622adf1a9f6/workspace/open/src/hotspot/share/opto/node.hpp:457), pid=4173543, tid=4173563
# assert(!VerifyHashTableKeys || _hash_lock == 0) failed: remove node from hash table before modifying it
#
# JRE version: Java(TM) SE Runtime Environment (25.0+17) (fastdebug build 25-ea+17-LTS-1868)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 25-ea+17-LTS-1868, compiled mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x504e14] Node::set_req(unsigned int, Node*)+0x2b4
#
# Core dump will be written. Default location: Core dumps may be processed with "/opt/core.sh %p" (or dumping to /opt/mach5/mesos/work_dir/slaves/03ecc23a-edd5-4bb5-a333-4ff8ea07fd7c-S1484/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/df1e7582-93f1-4f01-a5a1-236bc6822e59/runs/984f2cf8-ce73-4f24-8887-1eed94d85948/testoutput/test-support/jtreg_closed_test_hotspot_jtreg_applications_javafuzzer_JF_5000Tests_java/scratch/0/generated/javafuzzer_tests/core.4173543)
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#

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

Command Line: -Xmx1G -XX:+IgnoreUnrecognizedVMOptions -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,*Test*::* -Xcomp Test_435

Host: AMD EPYC 7J13 64-Core Processor, 12 cores, 23G, Oracle Linux Server release 8.10
Time: Mon Mar 31 13:24:26 2025 UTC elapsed time: 0.662740 seconds (0d 0h 0m 0s)

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

Current thread (0x00007fb7d42399c0): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=4173563, stack(0x00007fb7b8f4b000,0x00007fb7b904b000) (1024K)]


Current CompileTask:
C2:662 12 b 4 Test_435::iMeth1 (278 bytes)

Stack: [0x00007fb7b8f4b000,0x00007fb7b904b000], sp=0x00007fb7b9045e70, free space=1003k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x504e14] Node::set_req(unsigned int, Node*)+0x2b4 (node.hpp:457)
V [libjvm.so+0x15f1861] maskShiftAmount(PhaseGVN*, Node*, unsigned int)+0x101 (mulnode.cpp:974)
V [libjvm.so+0x15f434e] collapse_nested_shift_left(PhaseGVN*, Node*, int, BasicType)+0x7e (mulnode.cpp:1004)
V [libjvm.so+0x173543d] PhaseIterGVN::transform_old(Node*)+0xbd (phaseX.cpp:668)
V [libjvm.so+0x172b11e] PhaseIterGVN::optimize()+0x9e (phaseX.cpp:1046)
V [libjvm.so+0xae7c1a] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x6da (loopnode.hpp:1256)
V [libjvm.so+0xadef8c] Compile::optimize_loops(PhaseIterGVN&, LoopOptsMode)+0xac (compile.cpp:2229)
V [libjvm.so+0xae1ce1] Compile::Optimize()+0xce1 (compile.cpp:2474)
V [libjvm.so+0xae4d7f] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x1ecf (compile.cpp:860)
V [libjvm.so+0x91f5c0] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x440 (c2compiler.cpp:141)
V [libjvm.so+0xaf2522] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xb22 (compileBroker.cpp:2307)
V [libjvm.so+0xaf3538] CompileBroker::compiler_thread_loop()+0x598 (compileBroker.cpp:1951)
V [libjvm.so+0x10191cf] JavaThread::thread_main_inner()+0x12f (javaThread.cpp:776)
V [libjvm.so+0x19fe6e6] Thread::call_run()+0xb6 (thread.cpp:231)
V [libjvm.so+0x16a97c8] thread_native_entry(Thread*)+0x128 (os_linux.cpp:877)