Description of problem:
Execute from HOST
Works well if we use ssh connection

1. stap --remote-prefix --remote root@100.100.100.30 -ve 'probe begin { printf("Hello from VM3-RHEL9-DEV!\n") }'
   Pass 1: parsed user script and 496 library scripts using 387992virt/148384res/16740shr/131468data kb, in 430usr/50sys/484real ms.
   Pass 2: analyzed script: 1 probe, 0 functions, 0 embeds, 0 globals using 392216virt/153116res/17004shr/135692data kb, in 30usr/0sys/32real ms.
   Pass 3: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.c
   Pass 4: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.ko
   Pass 5: starting run.
   0: Hello from VM3-RHEL9-DEV! <<== WE CAN SEE HELLO
   ^CPass 5: run completed in 20usr/0sys/3359real ms.
   
   
   Can not work is we use libvirt
   # stap --remote-prefix --remote libvirt://VM3-RHEL9-DEV -ve 'probe begin { printf("Hello from VM3-RHEL9-DEV!n") }

   '
   Pass 1: parsed user script and 496 library scripts using 388028virt/148540res/16860shr/131504data kb, in 420usr/60sys/486real ms.
   Pass 2: analyzed script: 1 probe, 0 functions, 0 embeds, 0 globals using 392252virt/153212res/17060shr/135728data kb, in 40usr/10sys/33real ms.
   Pass 3: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.c
   Pass 4: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.ko
   Pass 5: starting run.
   <<== NOTHING HAPPEN WE CAN NOT SEE HELLO

Version-Release number of selected component (if applicable):

HOST INFO
systemtap-runtime-virthost-4.6-12.el9_0.x86_64
systemtap-sdt-devel-4.6-12.el9_0.x86_64
systemtap-runtime-4.6-12.el9_0.x86_64
systemtap-client-4.6-12.el9_0.x86_64
systemtap-devel-4.6-12.el9_0.x86_64
systemtap-4.6-12.el9_0.x86_64
systemtap-server-4.6-12.el9_0.x86_64

libvirt-libs-8.0.0-8.el9_0.x86_64
libvirt-glib-4.0.0-3.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_64
libvirt-client-8.0.0-8.el9_0.x86_64
python3-libvirt-8.0.0-1.el9.x86_64
libvirt-daemon-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-core-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-network-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-nwfilter-8.0.0-8.el9_0.x86_64
libvirt-daemon-config-nwfilter-8.0.0-8.el9_0.x86_64
libvirt-daemon-config-network-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-disk-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-mpath-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-scsi-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-iscsi-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-rbd-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-logical-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-storage-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-interface-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-qemu-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-secret-8.0.0-8.el9_0.x86_64
libvirt-daemon-driver-nodedev-8.0.0-8.el9_0.x86_64
libvirt-8.0.0-8.el9_0.x86_64

VM3-RHEL9-DEV INFO

systemtap-runtime-4.6-12.el9_0.x86_64
systemtap-client-4.6-12.el9_0.x86_64
systemtap-devel-4.6-12.el9_0.x86_64
systemtap-4.6-12.el9_0.x86_64
systemtap-server-4.6-12.el9_0.x86_64
systemtap-runtime-virtguest-4.6-12.el9_0.x86_64
systemtap-initscript-4.6-12.el9_0.x86_64
systemtap-runtime-virthost-4.6-12.el9_0.x86_64
systemtap-debugsource-4.6-12.el9_0.x86_64
systemtap-debuginfo-4.6-12.el9_0.x86_64
systemtap-runtime-debuginfo-4.6-12.el9_0.x86_64

How reproducible:
Execute command
Can not work is we use libvirt

1. stap --remote-prefix --remote libvirt://VM3-RHEL9-DEV -ve 'probe begin { printf("Hello from VM3-RHEL9-DEV!\n") }'
   Pass 1: parsed user script and 496 library scripts using 388028virt/148540res/16860shr/131504data kb, in 420usr/60sys/486real ms.
   Pass 2: analyzed script: 1 probe, 0 functions, 0 embeds, 0 globals using 392252virt/153212res/17060shr/135728data kb, in 40usr/10sys/33real ms.
   Pass 3: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.c
   Pass 4: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.ko
   Pass 5: starting run.
   <<== NOTHING HAPPEN WE CAN NOT SEE HELLO
   
   Steps to Reproduce:
   1.
   2.
   3.
   
   Actual results:
   
   
   Expected results:
   It should work if use libvirt connection and we should see the output
   
   Additional info:
   Execute from HOST
   Works well if we use ssh connection
   # stap --remote-prefix --remote root@100.100.100.30 -ve 'probe begin { printf("Hello from VM3-RHEL9-DEV!n") }

   '
   Pass 1: parsed user script and 496 library scripts using 387992virt/148384res/16740shr/131468data kb, in 430usr/50sys/484real ms.
   Pass 2: analyzed script: 1 probe, 0 functions, 0 embeds, 0 globals using 392216virt/153116res/17004shr/135692data kb, in 30usr/0sys/32real ms.
   Pass 3: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.c
   Pass 4: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.ko
   Pass 5: starting run.
   0: Hello from VM3-RHEL9-DEV! <<== WE CAN SEE HELLO
   ^CPass 5: run completed in 20usr/0sys/3359real ms.

Can not work is we use libvirt

1. stap --remote-prefix --remote libvirt://VM3-RHEL9-DEV -ve 'probe begin { printf("Hello from VM3-RHEL9-DEV!\n") }

   '
   Pass 1: parsed user script and 496 library scripts using 388028virt/148540res/16860shr/131504data kb, in 420usr/60sys/486real ms.
   Pass 2: analyzed script: 1 probe, 0 functions, 0 embeds, 0 globals using 392252virt/153212res/17060shr/135728data kb, in 40usr/10sys/33real ms.
   Pass 3: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.c
   Pass 4: using cached /root/.systemtap/cache/f2/stap_f2f4984a8595cb3047ff21e278bfd589_877.ko
   Pass 5: starting run.
   <<== NOTHING HAPPEN WE CAN NOT SEE HELLO

stapvirt info

1. stapvirt query VM3-RHEL9-DEV

Name: VM3-RHEL9-DEV
UUID: a719c10c-0b9b-4e3d-bfa8-af5bee183e44
State: running
ID: 63
Type: persistent
Permanent Ports: 2
Hotplugging: supported

1. stapvirt port-list VM3-RHEL9-DEV
   /var/lib/libvirt/qemu/VM3-RHEL9-DEV.org.systemtap.stapsh.0.sock
   /var/lib/libvirt/qemu/VM3-RHEL9-DEV.org.systemtap.stapsh.1.sock

On VM3-RHEL9-DEV

1. systemctl status stapsh@org.systemtap.stapsh.0.service
   ● stapsh@org.systemtap.stapsh.0.service - SystemTap stapsh on org.systemtap.stapsh.0
   Loaded: loaded (/usr/lib/systemd/system/stapsh@.service; static)
   Active: active (running) since Tue 2022-06-14 14:41:10 CST; 52min ago
   Docs: man:stap
   man:stapsh
   Main PID: 73714 (stapsh)
   Tasks: 1 (limit: 20701)
   Memory: 176.0K
   CPU: 30ms
   CGroup: /system.slice/system-stapsh.slice/stapsh@org.systemtap.stapsh.0.service
   └─73714 /usr/bin/stapsh -l /dev/virtio-ports/org.systemtap.stapsh.0

Jun 14 14:41:10 RHEL9DEV systemd[1]: Started SystemTap stapsh on org.systemtap.stapsh.0.

#lspci |grep console
09:00.0 Communication controller: Red Hat, Inc. Virtio console (rev 01)