What were you trying to do that didn't work?

In a dual kernel environment, i.e. RHEL 9.8 userspace and RHEL 10.2 kernel, on a RHEL VM live migration scenario, if the qemu-trace-stap tool is invoked to gather how much data is left or has been transferred a parsing error is obtaining from Systemtap.

parse error: expected literal string or number
        saw: operator '*' at /usr/share/systemtap/tapset/libvirt_probes-64.stp:204:3
    source:   *cert = user_string($arg4);

Furthermore, next victim is gcc, which also reports some unrecognized command options, likely due to previous parsing error.

gcc: error: unrecognized command-line option '-ftrivial-auto-var-init=zero'
gcc: error: unrecognized command-line option '-fmin-function-alignment=16'; did you mean '-flimit-function-alignment'?
make[1]: *** [scripts/Makefile.build:229: /tmp/stappm7mGi/stap_6ab018d768302cf40efc883f6a4dcd18_3054_src.o] Error 1
make: *** [Makefile:1994: /tmp/stapVBsTTW] Error 2
WARNING: kbuild exited with status: 2
Pass 4: compilation failed.  [man error::pass4]
Kernel version 6.12.0 is within tested range 3.10 ... 6.18-rc

While this is probably expected due to this particular environment setup, we want to track it and get some feedback/advice if possible

What is the impact of this issue to you?

In a dual kernel environment I am not able to use qemu-trace-stap tool

Please provide the package NVR for which the bug is seen:

RHEL 9.8 kernel
kernel-5.14.0-661.el9.x86_64

RHEL 10.2 kernel
kernel-6.12.0-183.el10.x86_64

qemu-kvm-10.1.0-11.el9.x86_64
libvirt-11.10.0-3.el9.x86_64
systemtap-runtime-5.4-4.el9.x86_64
gcc-11.5.0-14.el9.x86_64

VM
RHEL 9.8

How reproducible is this bug?:

100%

Steps to reproduce

1. Install RHEL 10.2 kernel on top of RHEL 9.8 userspace environment
2. Boot up a VM using QEMU
3. Execute qemu-trace-stap with some options, e.g.

qemu-trace-stap run --pid=$(pidof qemu-kvm) /usr/libexec/qemu-kvm migrate_pending_exact

Expected results

Not sure Probably it's expected but we want to get confirmation.

Actual results

Systemtap complains and throws a parsing unhandled error