To reproduce, run the tests under serviceability/sa with -XX:UseBranchProtection=pac-ret on a machine that supports PAC:

java.lang.NullPointerException: Cannot invoke "sun.jvm.hotspot.debugger.Address.addOffsetTo(long)" because the return value of "sun.jvm.hotspot.runtime.Frame.getFP()" is null
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.addressOfStackSlot(Frame.java:237)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.aarch64.AARCH64Frame.getSenderSP(AARCH64Frame.java:455)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.aarch64.AARCH64Frame.sender(AARCH64Frame.java:294)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.sender(Frame.java:207)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:212)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VFrame.sender(VFrame.java:119)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VFrame.javaSender(VFrame.java:148)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:81)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45)
        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:302)
        at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:500)