From: Jiri Olsa <jolsa@redhat•com>
To: Alexei Starovoitov <ast@kernel•org>,
Daniel Borkmann <daniel@iogearbox•net>,
Andrii Nakryiko <andriin@fb•com>
Cc: netdev@vger•kernel.org, 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>,
Masami Hiramatsu <mhiramat@kernel•org>,
Alan Maguire <alan.maguire@oracle•com>
Subject: [PATCHv3 bpf-next 7/7] selftests/bpf: Add test for bpf_get_func_ip in kprobe+offset probe
Date: Wed, 7 Jul 2021 23:47:51 +0200 [thread overview]
Message-ID: <20210707214751.159713-8-jolsa@kernel.org> (raw)
In-Reply-To: <20210707214751.159713-1-jolsa@kernel.org>
Adding test for bpf_get_func_ip in kprobe+ofset probe.
Because of the offset value it's arch specific, adding
it only for x86_64 architecture.
Signed-off-by: Jiri Olsa <jolsa@kernel•org>
---
.../testing/selftests/bpf/progs/get_func_ip_test.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
index 8ca54390d2b1..e8a9428a0ea3 100644
--- a/tools/testing/selftests/bpf/progs/get_func_ip_test.c
+++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
@@ -10,6 +10,7 @@ extern const void bpf_fentry_test2 __ksym;
extern const void bpf_fentry_test3 __ksym;
extern const void bpf_fentry_test4 __ksym;
extern const void bpf_modify_return_test __ksym;
+extern const void bpf_fentry_test6 __ksym;
__u64 test1_result = 0;
SEC("fentry/bpf_fentry_test1")
@@ -60,3 +61,15 @@ int BPF_PROG(fmod_ret_test, int a, int *b, int ret)
test5_result = (const void *) addr == &bpf_modify_return_test;
return ret;
}
+
+#ifdef __x86_64__
+__u64 test6_result = 0;
+SEC("kprobe/bpf_fentry_test6+0x5")
+int test6(struct pt_regs *ctx)
+{
+ __u64 addr = bpf_get_func_ip(ctx);
+
+ test6_result = (const void *) addr == &bpf_fentry_test6 + 5;
+ return 0;
+}
+#endif
--
2.31.1
next prev parent reply other threads:[~2021-07-07 21:49 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 21:47 [PATCHv3 bpf-next 0/7] bpf, x86: Add bpf_get_func_ip helper Jiri Olsa
2021-07-07 21:47 ` [PATCHv3 bpf-next 1/7] bpf, x86: Store caller's ip in trampoline stack Jiri Olsa
2021-07-07 21:47 ` [PATCHv3 bpf-next 2/7] bpf: Enable BPF_TRAMP_F_IP_ARG for trampolines with call_get_func_ip Jiri Olsa
2021-07-07 21:47 ` [PATCHv3 bpf-next 3/7] bpf: Add bpf_get_func_ip helper for tracing programs Jiri Olsa
2021-07-08 0:06 ` Andrii Nakryiko
2021-07-11 14:48 ` Jiri Olsa
2021-07-08 2:11 ` Alexei Starovoitov
2021-07-11 14:48 ` Jiri Olsa
2021-07-07 21:47 ` [PATCHv3 bpf-next 4/7] bpf: Add bpf_get_func_ip helper for kprobe programs Jiri Olsa
2021-07-10 7:55 ` Masami Hiramatsu
2021-07-11 14:48 ` Jiri Olsa
2021-07-07 21:47 ` [PATCHv3 bpf-next 5/7] selftests/bpf: Add test for bpf_get_func_ip helper Jiri Olsa
2021-07-08 0:12 ` Andrii Nakryiko
2021-07-11 14:48 ` Jiri Olsa
2021-07-07 21:47 ` [PATCHv3 bpf-next 6/7] libbpf: allow specification of "kprobe/function+offset" Jiri Olsa
2021-07-08 0:14 ` Andrii Nakryiko
2021-07-11 14:48 ` Jiri Olsa
2021-07-07 21:47 ` Jiri Olsa [this message]
2021-07-08 0:18 ` [PATCHv3 bpf-next 7/7] selftests/bpf: Add test for bpf_get_func_ip in kprobe+offset probe Andrii Nakryiko
2021-07-11 14:48 ` Jiri Olsa
2021-07-12 23:32 ` Andrii Nakryiko
2021-07-13 14:15 ` Jiri Olsa
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