ubuntu_bpf failed to build on K-kvm (failed to load object file)

[Po-Hsu Lin]

Issue found with K-kvm 5.19.0-1021.22 after enabling tests on openstack.

Test build failed with:
  GEN-SKEL [test_progs] test_ksyms_module.lskel.h
  GEN-SKEL [test_progs] test_ksyms_weak.lskel.h
make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf'
make: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests'
stderr:
libbpf: elf: skipping unrecognized data section(6) .maps.btf_map
libbpf: map 'btf_map' (legacy): legacy map definitions are deprecated, use BTF-defined maps instead
libbpf: Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead
libbpf: elf: skipping unrecognized data section(6) .maps.btf_map
libbpf: map 'btf_map' (legacy): legacy map definitions are deprecated, use BTF-defined maps instead
libbpf: Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead
libbpf: elf: skipping unrecognized data section(6) .maps.btf_map_legacy
libbpf: map 'btf_map_legacy' (legacy): legacy map definitions are deprecated, use BTF-defined maps instead
libbpf: Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead
libbpf: elf: skipping unrecognized data section(6) .maps.btf_map_legacy
libbpf: map 'btf_map_legacy' (legacy): legacy map definitions are deprecated, use BTF-defined maps instead
libbpf: Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead
libbpf: failed to open /proc/kallsyms: -2
libbpf: failed to load object 'test_ksyms_weak_lskel'
Error: failed to load object file
make[1]: *** [Makefile:523: /home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf/test_ksyms_weak.lskel.h] Error 234
make[1]: *** Deleting file '/home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf/test_ksyms_weak.lskel.h'

Please find attachment for the complete test log.