The following test failed in the JDK18 CI:

serviceability/dcmd/gc/HeapDumpAllTest.java

Here's a snippet from the log file:

----------stdout:(18/1117)*----------
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=\\handles.cpp:35
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (t:\\workspace\\open\\src\\hotspot\\share\\runtime\\handles.cpp:35), pid=3540, tid=25336
# assert(_handle_mark_nesting > 1) failed: memory leak: allocating handle outside HandleMark
#
# JRE version: Java(TM) SE Runtime Environment (18.0+15) (fastdebug build 18-ea+15-794)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 18-ea+15-794, compiled mode, tiered, compressed oops, compressed class ptrs, g1 gc, windows-amd64)
# Core dump will be written. Default location: T:\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_hotspot_serviceability\\scratch\\5\\hs_err_pid3540.mdmp
#
# An error report file with more information is saved as:
# T:\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_hotspot_serviceability\\scratch\\5\\hs_err_pid3540.log
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#
result: Error. Agent communication error: java.net.SocketException: Connection reset; check console log for any additional details


Here's the crashing thread's stack:

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

Current thread (0x000001a491005d00): GCTaskThread "GC Thread#2" [stack: 0x0000003d8c300000,0x0000003d8c400000] [id=25336] _threads_hazard_ptr=0x000001a48f54e810, _nested_threads_hazard_ptr_cnt=0

Stack: [0x0000003d8c300000,0x0000003d8c400000]
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0xadc411] os::platform_print_native_stack+0xf1 (os_windows_x86.cpp:235)
V [jvm.dll+0xcf9675] VMError::report+0x1005 (vmError.cpp:742)
V [jvm.dll+0xcfb01e] VMError::report_and_die+0x7fe (vmError.cpp:1552)
V [jvm.dll+0xcfb7a4] VMError::report_and_die+0x64 (vmError.cpp:1333)
V [jvm.dll+0x4ce027] report_vm_error+0xb7 (debug.cpp:282)
V [jvm.dll+0x6594c0] HandleArea::allocate_handle+0x40 (handles.cpp:35)
V [jvm.dll+0x4cfeb2] ConstantOopReadValue::ConstantOopReadValue+0x162 (debugInfo.cpp:267)
V [jvm.dll+0x4d05d8] ScopeValue::read_from+0xe8 (debugInfo.cpp:108)
V [jvm.dll+0x4d07ee] ObjectValue::read_object+0x1e (debugInfo.cpp:152)
V [jvm.dll+0x4d0b6a] DebugInfoReadStream::read_object_value+0x1aa (debugInfo.cpp:80)
V [jvm.dll+0x4d0663] ScopeValue::read_from+0x173 (debugInfo.cpp:111)
V [jvm.dll+0xb87d1d] ScopeDesc::ScopeDesc+0x13d (scopeDesc.cpp:39)
V [jvm.dll+0xcebba0] compiledVFrame::compiledVFrame+0xa0 (vframe_hp.cpp:293)
V [jvm.dll+0xce7c23] vframe::new_vframe+0x173 (vframe.cpp:86)
V [jvm.dll+0xce906e] vframe::sender+0x1be (vframe.cpp:112)
V [jvm.dll+0xced8a5] compiledVFrame::sender+0xd5 (vframe_hp.cpp:388)
V [jvm.dll+0xc8f693] ThreadStackTrace::dump_stack_at_safepoint+0x153 (threadService.cpp:669)
V [jvm.dll+0x66380f] VM_HeapDumper::dump_stack_traces+0x23f (heapDumper.cpp:1868)
V [jvm.dll+0x6650c6] VM_HeapDumper::work+0x226 (heapDumper.cpp:1815)
V [jvm.dll+0xd3f28a] GangWorker::loop+0x8a (workgroup.cpp:240)
V [jvm.dll+0xd3f32d] GangWorker::run+0x1d (workgroup.cpp:207)
V [jvm.dll+0xc7c164] Thread::call_run+0x1b4 (thread.cpp:365)
V [jvm.dll+0xadadce] thread_native_entry+0xae (os_windows.cpp:549)
C [ucrtbase.dll+0x1fb80]
C [KERNEL32.DLL+0x84d4]
C [ntdll.dll+0x51781]