From: Jiri Olsa <jolsa@kernel.org>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: bpf@vger.kernel.org, Martin KaFai Lau <kafai@fb.com>,
Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@chromium.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Christoph Hellwig <hch@lst.de>,
Masami Hiramatsu <mhiramat@kernel.org>,
Martynas Pumputis <m@lambda.lt>
Subject: [PATCH bpf-next 8/8] selftests/bpf: Add kprobe_multi check to module attach test
Date: Sun, 9 Oct 2022 23:59:26 +0200 [thread overview]
Message-ID: <20221009215926.970164-9-jolsa@kernel.org> (raw)
In-Reply-To: <20221009215926.970164-1-jolsa@kernel.org>
Adding test that makes sure the kernel module won't be removed
if there's kprobe multi link defined on top of it.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/testing/selftests/bpf/prog_tests/module_attach.c | 7 +++++++
tools/testing/selftests/bpf/progs/test_module_attach.c | 6 ++++++
2 files changed, 13 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/module_attach.c b/tools/testing/selftests/bpf/prog_tests/module_attach.c
index 6d0e50dcf47c..7fc01ff490db 100644
--- a/tools/testing/selftests/bpf/prog_tests/module_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/module_attach.c
@@ -103,6 +103,13 @@ void test_module_attach(void)
ASSERT_ERR(delete_module("bpf_testmod", 0), "delete_module");
bpf_link__destroy(link);
+ link = bpf_program__attach(skel->progs.kprobe_multi);
+ if (!ASSERT_OK_PTR(link, "attach_kprobe_multi"))
+ goto cleanup;
+
+ ASSERT_ERR(delete_module("bpf_testmod", 0), "delete_module");
+ bpf_link__destroy(link);
+
cleanup:
test_module_attach__destroy(skel);
}
diff --git a/tools/testing/selftests/bpf/progs/test_module_attach.c b/tools/testing/selftests/bpf/progs/test_module_attach.c
index 08628afedb77..8a1b50f3a002 100644
--- a/tools/testing/selftests/bpf/progs/test_module_attach.c
+++ b/tools/testing/selftests/bpf/progs/test_module_attach.c
@@ -110,4 +110,10 @@ int BPF_PROG(handle_fmod_ret,
return 0; /* don't override the exit code */
}
+SEC("kprobe.multi/bpf_testmod_test_read")
+int BPF_PROG(kprobe_multi)
+{
+ return 0;
+}
+
char _license[] SEC("license") = "GPL";
--
2.37.3
next prev parent reply other threads:[~2022-10-09 22:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-09 21:59 [PATCH bpf-next 0/8] bpf: Fixes for kprobe multi on kernel modules Jiri Olsa
2022-10-09 21:59 ` [PATCH bpf-next 1/8] kallsyms: Make module_kallsyms_on_each_symbol generally available Jiri Olsa
2022-10-11 6:56 ` Song Liu
2022-10-09 21:59 ` [PATCH bpf-next 2/8] ftrace: Add support to resolve module symbols in ftrace_lookup_symbols Jiri Olsa
2022-10-11 7:05 ` Song Liu
2022-10-11 10:07 ` Jiri Olsa
2022-10-09 21:59 ` [PATCH bpf-next 3/8] bpf: Rename __bpf_kprobe_multi_cookie_cmp to bpf_kprobe_multi_addrs_cmp Jiri Olsa
2022-10-11 7:06 ` Song Liu
2022-10-09 21:59 ` [PATCH bpf-next 4/8] bpf: Take module reference on kprobe_multi link Jiri Olsa
2022-10-11 7:16 ` Song Liu
2022-10-11 10:09 ` Jiri Olsa
2022-10-13 18:50 ` Andrii Nakryiko
2022-10-14 10:17 ` Jiri Olsa
2022-10-09 21:59 ` [PATCH bpf-next 5/8] selftests/bpf: Add load_kallsyms_refresh function Jiri Olsa
2022-10-11 7:17 ` Song Liu
2022-10-09 21:59 ` [PATCH bpf-next 6/8] selftests/bpf: Add bpf_testmod_fentry_* functions Jiri Olsa
2022-10-11 7:24 ` Song Liu
2022-10-09 21:59 ` [PATCH bpf-next 7/8] selftests/bpf: Add kprobe_multi kmod link api tests Jiri Olsa
2022-10-11 7:27 ` Song Liu
2022-10-11 10:09 ` Jiri Olsa
2022-10-13 19:06 ` Andrii Nakryiko
2022-10-14 10:25 ` Jiri Olsa
2022-10-09 21:59 ` Jiri Olsa [this message]
2022-10-11 7:27 ` [PATCH bpf-next 8/8] selftests/bpf: Add kprobe_multi check to module attach test Song Liu
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