Created attachment 223561 [details] Error report file that was produced While trying to produce a heap dump from JVM with: jhsdb jmap --pid 18369 --binaryheap --dumpfile dump.hpro After running for a while, it fails with SIGSEGV: Attaching to process ID 18369, please wait... Debugger attached successfully. Server compiler detected. JVM version is 11.0.10+9-1 # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00000008011543b9, pid=18729, tid=101203 # # JRE version: OpenJDK Runtime Environment (11.0.10+9) (build 11.0.10+9-1) # Java VM: OpenJDK 64-Bit Server VM (11.0.10+9-1, mixed mode, tiered, compressed oops, serial gc, bsd-amd64) # Problematic frame: # C [libc.so.7+0x913b9] signed char+0x49 I'll attach the error report file.