Found one Java-level deadlock:
=============================
"main":
waiting to lock monitor 0x00007f4bcc032200 (object 0x000000075371c990, a sun.hotspot.tools.ctw.PathHandler$PathEntryClassLoader),
which is held by "JVMCI CompilerThread1"
"JVMCI CompilerThread1":
waiting to lock monitor 0x00007f4bd8227f00 (object 0x000000075372aed8, a java.util.jar.JarFile),
which is held by "main"
=============================
"main":
waiting to lock monitor 0x00007f4bcc032200 (object 0x000000075371c990, a sun.hotspot.tools.ctw.PathHandler$PathEntryClassLoader),
which is held by "JVMCI CompilerThread1"
"JVMCI CompilerThread1":
waiting to lock monitor 0x00007f4bd8227f00 (object 0x000000075372aed8, a java.util.jar.JarFile),
which is held by "main"