From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A93452E03E3; Mon, 26 Jan 2026 21:19:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769462386; cv=none; b=C8UM7sPytGXye33fbtzyAzSKC3txY3UXKMTg4PbZjPcCeOeyNKO4xOchnx5E00OgUrhFnORHujB7ldAZeH40n/amymu0TBJYMWPDgy34Eu9+1vM+hOzERuI7PnkYOwOFQEJa13qRQQ9Erj3gR6jRJCVIlF6RU5gARXeAZ5NyGrg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769462386; c=relaxed/simple; bh=f5CjdbtvfI7lSsK0TYfvFetqD0ElgrRjgzKIn4A46QA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TLNZkwr/b0wyzkAuQZwaawAaKVhqDnDggIMZDSwfmXpd9PL8Uhj242vcTRACZ9FoQBRnx9KouSytUGZXI2EneKScQ3/gh8ie1LY+/uYiIN7HPuDDF8fGLh2WWRzBCzwFE9fIX3NxWrdRCrL5DUSjsHuO9egvNc7K4rQTVQUHloc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OfBVmSri; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OfBVmSri" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5F559C116C6; Mon, 26 Jan 2026 21:19:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769462386; bh=f5CjdbtvfI7lSsK0TYfvFetqD0ElgrRjgzKIn4A46QA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OfBVmSrifjuBRckOXslWbJRI/2DcRmX0hZ4ZJIG5bKiQ69OichrxGli+8HzK5ulUc 8PDz0BTffTT73WgELBcQa+M16ngyzW1Qx1zaSZ9OMNrfy/aU0wqG1F7chjPrAAzwTN OpMYOClv9iJhOLTmeLLUhGNB0BgoqRMyLZWfOjiHrA6nHnqmfaRqRlqFKWrF89BfWd NXXD5IMOuddZaEHla1JdKiVmD7GShyGRIi0+dbUkcYA7k5fDY5j315CsIURd3zX5PC V+DNsuJujXMt3J2IO7r82HmZyoINGc7BDktj/g32Dks33a3mRqD0cEG/+PHTVPCW+e hnr6Oah55i1Mw== From: Jiri Olsa To: Masami Hiramatsu , Steven Rostedt , Josh Poimboeuf Cc: Peter Zijlstra , bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Yonghong Song , Song Liu , Andrii Nakryiko , Mahe Tardy Subject: [PATCHv2 bpf-next 5/6] selftests/bpf: Add stacktrace ips test for fentry/fexit Date: Mon, 26 Jan 2026 22:18:36 +0100 Message-ID: <20260126211837.472802-6-jolsa@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260126211837.472802-1-jolsa@kernel.org> References: <20260126211837.472802-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adding test that attaches fentry/fexitand verifies the ORC stacktrace matches expected functions. The test is only for ORC unwinder to keep it simple. Signed-off-by: Jiri Olsa --- .../selftests/bpf/prog_tests/stacktrace_ips.c | 51 +++++++++++++++++++ .../selftests/bpf/progs/stacktrace_ips.c | 20 ++++++++ 2 files changed, 71 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c index 852830536109..da42b00e3d1f 100644 --- a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c +++ b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c @@ -183,6 +183,53 @@ static void test_stacktrace_ips_kprobe(bool retprobe) stacktrace_ips__destroy(skel); } +static void test_stacktrace_ips_trampoline(bool retprobe) +{ + LIBBPF_OPTS(bpf_test_run_opts, topts); + struct stacktrace_ips *skel; + + skel = stacktrace_ips__open_and_load(); + if (!ASSERT_OK_PTR(skel, "stacktrace_ips__open_and_load")) + return; + + if (!skel->kconfig->CONFIG_UNWINDER_ORC) { + test__skip(); + goto cleanup; + } + + if (retprobe) { + skel->links.fexit_test = bpf_program__attach_trace(skel->progs.fexit_test); + if (!ASSERT_OK_PTR(skel->links.fexit_test, "bpf_program__attach_trace")) + goto cleanup; + } else { + skel->links.fentry_test = bpf_program__attach_trace(skel->progs.fentry_test); + if (!ASSERT_OK_PTR(skel->links.fentry_test, "bpf_program__attach_trace")) + goto cleanup; + } + + trigger_module_test_read(1); + + load_kallsyms(); + + if (retprobe) { + check_stacktrace_ips(bpf_map__fd(skel->maps.stackmap), skel->bss->stack_key, 4, + ksym_get_addr("bpf_testmod_stacktrace_test_3"), + ksym_get_addr("bpf_testmod_stacktrace_test_2"), + ksym_get_addr("bpf_testmod_stacktrace_test_1"), + ksym_get_addr("bpf_testmod_test_read")); + } else { + check_stacktrace_ips(bpf_map__fd(skel->maps.stackmap), skel->bss->stack_key, 5, + ksym_get_addr("bpf_testmod_stacktrace_test"), + ksym_get_addr("bpf_testmod_stacktrace_test_3"), + ksym_get_addr("bpf_testmod_stacktrace_test_2"), + ksym_get_addr("bpf_testmod_stacktrace_test_1"), + ksym_get_addr("bpf_testmod_test_read")); + } + +cleanup: + stacktrace_ips__destroy(skel); +} + static void __test_stacktrace_ips(void) { if (test__start_subtest("kprobe_multi")) @@ -195,6 +242,10 @@ static void __test_stacktrace_ips(void) test_stacktrace_ips_kprobe(false); if (test__start_subtest("kretprobe")) test_stacktrace_ips_kprobe(true); + if (test__start_subtest("fentry")) + test_stacktrace_ips_trampoline(false); + if (test__start_subtest("fexit")) + test_stacktrace_ips_trampoline(true); } #else static void __test_stacktrace_ips(void) diff --git a/tools/testing/selftests/bpf/progs/stacktrace_ips.c b/tools/testing/selftests/bpf/progs/stacktrace_ips.c index cae077a4061b..6830f2978613 100644 --- a/tools/testing/selftests/bpf/progs/stacktrace_ips.c +++ b/tools/testing/selftests/bpf/progs/stacktrace_ips.c @@ -53,4 +53,24 @@ int rawtp_test(void *ctx) return 0; } +SEC("fentry/bpf_testmod_stacktrace_test") +int fentry_test(struct pt_regs *ctx) +{ + /* + * Skip 2 bpf_program/trampoline stack entries: + * - bpf_prog_bd1f7a949f55fb03_fentry_test + * - bpf_trampoline_182536277701 + */ + stack_key = bpf_get_stackid(ctx, &stackmap, 2); + return 0; +} + +SEC("fexit/bpf_testmod_stacktrace_test") +int fexit_test(struct pt_regs *ctx) +{ + /* Skip 2 bpf_program/trampoline stack entries, check fentry_test. */ + stack_key = bpf_get_stackid(ctx, &stackmap, 2); + return 0; +} + char _license[] SEC("license") = "GPL"; -- 2.52.0