From nobody Fri Oct 3 11:26:00 2025 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 DCB253002BB; Tue, 2 Sep 2025 14:37:14 +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=1756823837; cv=none; b=D0bA9PmBL8dUgl5hyQjC1dKY06H2pXOI0X/+1Qa4pvvQ8eJ2yim3xBcNbDfizHwgIUVgLaOV4LvJCieH0ClW3IYXtI1UpjX9wbK6W9xQtJz3QfalPiRe3bkn8UZ0pCYe5vDQVy2znIPzpwJ1hMvZrYxMWBPHFASOCFXlyW8ZKA4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756823837; c=relaxed/simple; bh=U92VCsC0ZBHxBm+P1kswlbRRmd+LYWTcaMx17qX9d1A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EsnIGIvAWq0jFFVz35G9sx/RDRS/QZxtY82eHXI0lMOIMOCGCpBu+EBxcBzK2GqncMFwd7wzlnenkuUBhV7vKBN1iOHT0Tvh5U5HCPnnoceMWubYCQIdBrqlmL0qRHqZaBm95onZZvCXB96ssK0o7r+OxZi3iEz+aGa4cHgTBJ0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pA+33WIy; 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="pA+33WIy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E1642C4CEED; Tue, 2 Sep 2025 14:37:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756823834; bh=U92VCsC0ZBHxBm+P1kswlbRRmd+LYWTcaMx17qX9d1A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pA+33WIyaP0wcH/pODyKD6UBB0ixOMFAJA5p0Cohwck6HWtiRd2gXr4lcAxKArUqR sQEDl+xRGD7nT1HDjhL02fJJvQbTS/O9YaVVr3N9BaWa/CLjqekwqJw3+QUUG32M3y BgpYmXoIIPtmME4yrpZmsqiu03ki79URy94Lo+1xn9+/VOpIzCfF26l+OeYWSbqn/x knqJ62ZuA7ElPUH2yYOsg1kQB7VDVw36JQayfEDWDKhn235TVhn64QY5csSJeVJw15 694W8y2xkGzPD5jC12y3ZACTW6SOCrviqs6VESuFD5NP0+EvKv2LzraPqhKORD1/DQ AN/k+POHHrwQA== From: Jiri Olsa To: Oleg Nesterov , Masami Hiramatsu , Peter Zijlstra , Andrii Nakryiko Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Song Liu , Yonghong Song , John Fastabend , Hao Luo , Steven Rostedt , Ingo Molnar Subject: [PATCH perf/core 11/11] selftests/bpf: Add uprobe unique attach test Date: Tue, 2 Sep 2025 16:35:04 +0200 Message-ID: <20250902143504.1224726-12-jolsa@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250902143504.1224726-1-jolsa@kernel.org> References: <20250902143504.1224726-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Adding test to check the unique uprobe attchment together with not-unique uprobe on top perf uprobe pmu. Signed-off-by: Jiri Olsa --- .../testing/selftests/bpf/prog_tests/uprobe.c | 111 +++++++++++++++++- 1 file changed, 110 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe.c b/tools/testin= g/selftests/bpf/prog_tests/uprobe.c index cf3e0e7a64fa..4e1be03d863d 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe.c @@ -33,7 +33,7 @@ static int urand_trigger(FILE **urand_pipe) return exit_code; } =20 -void test_uprobe(void) +static void test_uprobe_urandlib(void) { LIBBPF_OPTS(bpf_uprobe_opts, uprobe_opts); struct test_uprobe *skel; @@ -93,3 +93,112 @@ void test_uprobe(void) pclose(urand_pipe); test_uprobe__destroy(skel); } + +static noinline void uprobe_unique_trigger(void) +{ + asm volatile (""); +} + +static void test_uprobe_unique(void) +{ + LIBBPF_OPTS(bpf_uprobe_opts, uprobe_opts, + .func_name =3D "uprobe_unique_trigger", + ); + struct bpf_link *link_1, *link_2 =3D NULL; + struct bpf_program *prog_1, *prog_2; + struct test_uprobe *skel; + + skel =3D test_uprobe__open_and_load(); + if (!ASSERT_OK_PTR(skel, "test_uprobe__open_and_load")) + return; + + skel->bss->my_pid =3D getpid(); + + prog_1 =3D skel->progs.test1; + prog_2 =3D skel->progs.test2; + + /* not-unique and unique */ + uprobe_opts.unique =3D false; + link_1 =3D bpf_program__attach_uprobe_opts(prog_1, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_OK_PTR(link_1, "bpf_program__attach_uprobe_opts_1")) + goto cleanup; + + uprobe_opts.unique =3D true; + link_2 =3D bpf_program__attach_uprobe_opts(prog_2, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_ERR_PTR(link_2, "bpf_program__attach_uprobe_opts_2")) { + bpf_link__destroy(link_2); + goto cleanup; + } + + bpf_link__destroy(link_1); + + /* unique and unique */ + uprobe_opts.unique =3D true; + link_1 =3D bpf_program__attach_uprobe_opts(prog_1, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_OK_PTR(link_1, "bpf_program__attach_uprobe_opts_1")) + goto cleanup; + + uprobe_opts.unique =3D true; + link_2 =3D bpf_program__attach_uprobe_opts(prog_2, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_ERR_PTR(link_2, "bpf_program__attach_uprobe_opts_2")) { + bpf_link__destroy(link_2); + goto cleanup; + } + + bpf_link__destroy(link_1); + + /* unique and not-unique */ + uprobe_opts.unique =3D true; + link_1 =3D bpf_program__attach_uprobe_opts(prog_1, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_OK_PTR(link_1, "bpf_program__attach_uprobe_opts_1")) + goto cleanup; + + uprobe_opts.unique =3D false; + link_2 =3D bpf_program__attach_uprobe_opts(prog_2, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_ERR_PTR(link_2, "bpf_program__attach_uprobe_opts_2")) { + bpf_link__destroy(link_2); + goto cleanup; + } + + bpf_link__destroy(link_1); + + /* not-unique and not-unique */ + uprobe_opts.unique =3D false; + link_1 =3D bpf_program__attach_uprobe_opts(prog_1, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_OK_PTR(link_1, "bpf_program__attach_uprobe_opts_1")) + goto cleanup; + + uprobe_opts.unique =3D false; + link_2 =3D bpf_program__attach_uprobe_opts(prog_2, -1, "/proc/self/exe", + 0 /* offset */, &uprobe_opts); + if (!ASSERT_OK_PTR(link_2, "bpf_program__attach_uprobe_opts_2")) { + bpf_link__destroy(link_1); + goto cleanup; + } + + uprobe_unique_trigger(); + + ASSERT_EQ(skel->bss->test1_result, 1, "test1_result"); + ASSERT_EQ(skel->bss->test2_result, 1, "test2_result"); + + bpf_link__destroy(link_1); + bpf_link__destroy(link_2); + +cleanup: + test_uprobe__destroy(skel); +} + +void test_uprobe(void) +{ + if (test__start_subtest("urandlib")) + test_uprobe_urandlib(); + if (test__start_subtest("unique")) + test_uprobe_unique(); +} --=20 2.51.0