linux-kernel - [PATCH] selftests/bpf: DENYLIST.aarch64: enable kprobe

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Message-Id: <20250219-enable_kprobe_multi_tests-v1-1-faeec99240c8@bootlin.com>
Date: Wed, 19 Feb 2025 20:41:39 +0100
From: Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
To: Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, 
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Mykola Lysenko <mykolal@...com>, 
 Shuah Khan <shuah@...nel.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, 
 Bastien Curutchet <bastien.curutchet@...tlin.com>, ebpf@...uxfoundation.org, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, bpf@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
Subject: [PATCH] selftests/bpf: DENYLIST.aarch64: enable kprobe_multi tests
 for ARM64

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@...tlin.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@devnote2/
---
 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,
-- 
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com