Failure is on linux-x86-debug. I believe it was introduced by JDK-8376264.

java.lang.NullPointerException: Cannot invoke "sun.jvm.hotspot.debugger.Address.addOffsetTo(long)" because "this.cfa" is null
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.linux.amd64.LinuxAMD64CFrame.getNextRSP(LinuxAMD64CFrame.java:143)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.linux.amd64.LinuxAMD64CFrame.sender(LinuxAMD64CFrame.java:189)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:195)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:65)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:60)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.run(JStack.java:67)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:278)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:241)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:134)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.runWithArgs(JStack.java:90)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJSTACK(SALauncher.java:306)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:507)

I believe this is happening while walking the "main" thread:

"main" #3 prio=5 tid=0x00007f34f402e320 nid=1106480 runnable [0x00007f34ff3ed000]
   java.lang.Thread.State: RUNNABLE
   JavaThread state: _thread_in_native
0x00007f34fee555ef __GI_raise + 0x10f
0x00007f34fee28e65 __GI_abort + 0x127
0x00007f34fc569605 os::abort(bool, void const*, void const*) [clone .cold] + 0x4
0x00007f34fded7892 VMError::report_and_die(int, char const*, char const*, __va_list_tag*, Thread*, unsigned char*, void const*, void const*, char const*, int, unsigned long) + 0x6f2
0x00007f34fded803b VMError::report_and_die(Thread*, unsigned int, unsigned char*, void const*, void const*, char const*, ...) + 0x8a
0x00007f34fded8098 VMError::report_and_die(Thread*, unsigned int, unsigned char*, void const*, void const*) + 0x58
0x00007f34fdc0d4c8 JVM_handle_linux_signal + 0x428
0x00007f34fee55670 __restore_rt <signal trampoline>
0x00007f34ff3f4690 ????????