The kprobe_multi feature was disabled on ARM64 due to the lack of fprobe support.

The fprobe rewrite on function_graph has been recently merged and thus brought support for fprobes on arm64. This then enables kprobe_multi support on arm64, and so the corresponding tests can now be run on this architecture.

Remove the tests depending on kprobe_multi from DENYLIST.aarch64 to allow those to run in CI. CONFIG_FPROBE is already correctly set in tools/testing/selftests/bpf/config

Signed-off-by: Alexis Lothoré (eBPF Foundation) alexis.lothore@bootlin.com --- The tests being enabled with this series have been run locally in an ARM64 qemu environment, and in Github CI.

I only did some testing to ensure that the tests depending on kprobe_multi now run correctly on arm64, it is fair to stress that all the hard work has actually been done by M. Hiramatsu ([0])

[0] https://lore.kernel.org/bpf/173518987627.391279.3307342580035322889.stgit@de... --- tools/testing/selftests/bpf/DENYLIST.aarch64 | 9 --------- 1 file changed, 9 deletions(-)

diff --git a/tools/testing/selftests/bpf/DENYLIST.aarch64 b/tools/testing/selftests/bpf/DENYLIST.aarch64 index 901349da680fa67896d279d184db78e964d9ae27..6d8feda27ce9de07d77d6e384666082923e3dc76 100644 --- a/tools/testing/selftests/bpf/DENYLIST.aarch64 +++ b/tools/testing/selftests/bpf/DENYLIST.aarch64 @@ -1,12 +1,3 @@ -bpf_cookie/multi_kprobe_attach_api # kprobe_multi_link_api_subtest:FAIL:fentry_raw_skel_load unexpected error: -3 -bpf_cookie/multi_kprobe_link_api # kprobe_multi_link_api_subtest:FAIL:fentry_raw_skel_load unexpected error: -3 -kprobe_multi_bench_attach # needs CONFIG_FPROBE -kprobe_multi_test # needs CONFIG_FPROBE -module_attach # prog 'kprobe_multi': failed to auto-attach: -95 fentry_test/fentry_many_args # fentry_many_args:FAIL:fentry_many_args_attach unexpected error: -524 fexit_test/fexit_many_args # fexit_many_args:FAIL:fexit_many_args_attach unexpected error: -524 tracing_struct/struct_many_args # struct_many_args:FAIL:tracing_struct_many_args__attach unexpected error: -524 -fill_link_info/kprobe_multi_link_info # bpf_program__attach_kprobe_multi_opts unexpected error: -95 -fill_link_info/kretprobe_multi_link_info # bpf_program__attach_kprobe_multi_opts unexpected error: -95 -fill_link_info/kprobe_multi_invalid_ubuff # bpf_program__attach_kprobe_multi_opts unexpected error: -95 -missed/kprobe_recursion # missed_kprobe_recursion__attach unexpected error: -95 (errno 95)

--- base-commit: d3417ac824b98e8773bc04b93e09c4b93c2c6cad change-id: 20250219-enable_kprobe_multi_tests-c8d53336e5cd

Best regards,