Reproducer:

$ java -XX:StartFlightRecording DemoLeak.java 10000 20000

Await the message "Used: xxxxx", which in this case means that the heap consists of 10 000 linked lists with 20 000 nodes in each list. Open a second shell and use jcmd to dump a recording

$ jcmd <pid> JFR.dump path-to-gc-roots=true filename=dump.jfr

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_STACK_OVERFLOW (0xc00000fd) at pc=0x00007ffe388029c5, pid=3428, tid=29252
#
# JRE version: OpenJDK Runtime Environment (14.0+34) (build 14-ea+34-1452)
# Java VM: OpenJDK 64-Bit Server VM (14-ea+34-1452, mixed mode, sharing, tiered, compressed oops, g1 gc, windows-amd64)
# Problematic frame:
# V [jvm.dll+0x2629c5]

Could take some time before the crash happens. No hs_err_pid log file produced, but a hs_err_pid.jfr file.

Impact: High, crash
Likelihood: Low, happens only when using JFR and dumping path to gc roots on a heap that is deep.
Workaround: High, no known workarounds

ILW = HLH -> P2