Bug 2095750

Description of problem:
Systemd’s tests run during the rpm build fail on baremetal Power 8 system when executed as root. Failing test is test-sd-device-monitor.

Version-Release number of selected component (if applicable):
systemd-251.2-1.fc37

How reproducible:
Always

Steps to Reproduce:
1.rpm -i systemd-251.2-1.fc37.src.rpm
2.cd ~/rpmbuild/SPECS/systemd.spec
4.dnf builddep ./systemd.spec
3.rpmbuild -ba ./systemd.spec

Actual results:
Build fails with
 428/1065 systemd / test-sd-device-monitor                                                            FAIL              2.00s   killed by signal 6 SIGABRT
>>> SYSTEMD_LANGUAGE_FALLBACK_MAP=/root/rpmbuild/BUILD/systemd-stable-251.2/src/locale/language-fallback-map PATH=/root/rpmbuild/BUILD/systemd-stable-251.2/redhat-linux-build:/root/.local/bin:/root/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin MALLOC_PERTURB_=210 /root/rpmbuild/BUILD/systemd-stable-251.2/redhat-linux-build/test-sd-device-monitor
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stderr:
/* test_receive_device_fail */
lo: /* test_send_receive_one(subsystem_filter=false, tag_filter=false, use_bpf=false) */
lo: /* test_send_receive_one(subsystem_filter=true, tag_filter=false, use_bpf=false) */
lo: /* test_send_receive_one(subsystem_filter=false, tag_filter=true, use_bpf=false) */
lo: /* test_send_receive_one(subsystem_filter=true, tag_filter=true, use_bpf=false) */
lo: /* test_send_receive_one(subsystem_filter=true, tag_filter=false, use_bpf=true) */
lo: /* test_send_receive_one(subsystem_filter=false, tag_filter=true, use_bpf=true) */
lo: /* test_send_receive_one(subsystem_filter=true, tag_filter=true, use_bpf=true) */
lo: /* test_subsystem_filter */
lo: Sending device subsystem:net syspath:/sys/devices/virtual/net/lo
lo: /* test_tag_filter */
lo: Sending device syspath:/sys/devices/virtual/net/lo
lo: /* test_sysattr_filter(ifindex) */
lo: Sending device syspath:/sys/devices/virtual/net/lo
lo: /* test_sd_device_monitor_filter_remove */
lo: /* test_send_receive_one(subsystem_filter=false, tag_filter=false, use_bpf=false) */
sda: /* test_send_receive_one(subsystem_filter=false, tag_filter=false, use_bpf=false) */
sda: /* test_send_receive_one(subsystem_filter=true, tag_filter=false, use_bpf=false) */
sda: /* test_send_receive_one(subsystem_filter=false, tag_filter=true, use_bpf=false) */
sda: /* test_send_receive_one(subsystem_filter=true, tag_filter=true, use_bpf=false) */
sda: /* test_send_receive_one(subsystem_filter=true, tag_filter=false, use_bpf=true) */
sda: /* test_send_receive_one(subsystem_filter=false, tag_filter=true, use_bpf=true) */
sda: /* test_send_receive_one(subsystem_filter=true, tag_filter=true, use_bpf=true) */
sda: /* test_parent_filter */
Assertion 'device_monitor_send_device(monitor_server, monitor_client, d) >= 0' failed at src/libsystemd/sd-device/test-sd-device-monitor.c:240, function test_parent_filter(). Aborting.


Expected results:
All tests passing.

Additional info:
I have been able to reproduce this issue only on baremetal Power8 system. I have tried both with f35 and f36 based environments, both fail in the same way. To note  Power9 and VMs, LPARs(even Power 8 based) were not affected by this failure. Also running unprivileged is not triggering the failure, if I have understood the test correctly it is skipped in this case.