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 90B41157480; Mon, 26 Jan 2026 21:19:34 +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=1769462374; cv=none; b=AISYpv+vHJOsyn3QUo/fNrY8FSy5lepl2/ftKbrw0NZaS+YxVHRcdRbL0BPSfdU2Ifo0oAth1YR80x3/0DiimGUgWBsUhsCM8gFO3mks+PrgqTc1qOePC5GurH7S8nmSJsiEIhzIjSljFUEoOywTZj/LF4DRxOD3bssGZYWayMA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769462374; c=relaxed/simple; bh=jHenB7uG5OaeIVSLbTl8ievADyxvLciRLxSUcm+DDZU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IBVKIjWohPbOuUH2F+fNl3XinYPoxo8jNIOddzYVln7JjBf/VS4ccLtUPBxZe/Zbs2iLxZJYSBLpj6aHd3tHwEUhIifZ4oLCMEbOmznIulqBQFMdn5bFPs8ykTEilLb9Z2vWFHaL6mCGmR5KnK4FLKq1lUfGxZEGczwe8uKJmJk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dX0YkeK1; 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="dX0YkeK1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E6DBDC116C6; Mon, 26 Jan 2026 21:19:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769462374; bh=jHenB7uG5OaeIVSLbTl8ievADyxvLciRLxSUcm+DDZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dX0YkeK1LiesbfbI88TXJ16bxZG1tG6WiQ2YIlP63R05vUpyPVWA2xdk/8atrySLl BRQmRL/spQEbTyg8Eaj9i53OXZEyO0dKOsCt6Lwr7MZAOFKvPVJTx3CS9xbi8PyKrH hUWHvbOSVElspgyopbEL2xO8JTcs+JPb6owmC9G/k6jAEAa2OLSSOYsafjjBT7KQqf jkYLWdy7y1MZVzNJqvJjcOzsd+CI91udJE9f30C9nKMldfHHFMwnPO2Fo05kVMwWPd puiWjU8+e08hTE4tVIIUXdhDYPTQMAsaRoG+eiHJLFu/s9FK0D9hdvNh3ldYftV7EN OKbFNsuRLeVEQ== 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 4/6] selftests/bpf: Add stacktrace ips test for kprobe/kretprobe Date: Mon, 26 Jan 2026 22:18:35 +0100 Message-ID: <20260126211837.472802-5-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 kprobe/kretprobe and 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 | 50 +++++++++++++++++++ .../selftests/bpf/progs/stacktrace_ips.c | 7 +++ 2 files changed, 57 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c index c93718dafd9b..852830536109 100644 --- a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c +++ b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c @@ -137,6 +137,52 @@ static void test_stacktrace_ips_raw_tp(void) stacktrace_ips__destroy(skel); } +static void test_stacktrace_ips_kprobe(bool retprobe) +{ + LIBBPF_OPTS(bpf_kprobe_opts, opts, + .retprobe = 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; + } + + skel->links.kprobe_test = bpf_program__attach_kprobe_opts( + skel->progs.kprobe_test, + "bpf_testmod_stacktrace_test", &opts); + if (!ASSERT_OK_PTR(skel->links.kprobe_test, "bpf_program__attach_kprobe_opts")) + 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")) @@ -145,6 +191,10 @@ static void __test_stacktrace_ips(void) test_stacktrace_ips_kprobe_multi(true); if (test__start_subtest("raw_tp")) test_stacktrace_ips_raw_tp(); + if (test__start_subtest("kprobe")) + test_stacktrace_ips_kprobe(false); + if (test__start_subtest("kretprobe")) + test_stacktrace_ips_kprobe(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 a96c8150d7f5..cae077a4061b 100644 --- a/tools/testing/selftests/bpf/progs/stacktrace_ips.c +++ b/tools/testing/selftests/bpf/progs/stacktrace_ips.c @@ -31,6 +31,13 @@ int unused(void) __u32 stack_key; +SEC("kprobe") +int kprobe_test(struct pt_regs *ctx) +{ + stack_key = bpf_get_stackid(ctx, &stackmap, 0); + return 0; +} + SEC("kprobe.multi") int kprobe_multi_test(struct pt_regs *ctx) { -- 2.52.0