From patchwork Fri Oct 18 20:41:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 13842378 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 598E220CCCF; Fri, 18 Oct 2024 20:43:10 +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=1729284190; cv=none; b=Shg3fM1CLI6cncwf9ZIr5esMr8B+I/zBqx9CZgbEpuhN20c4aJY2PAzvM94k6MNC5LCJKidM2+HOramI1iP/d+ps02d/OzWgrb2vT3Y9vxqnBypNIc9d93Da1r62bOFBF45OAy4apU8u02S8/U8aBiQD9Qdig2Rvg8vsZwjQ6MM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729284190; c=relaxed/simple; bh=vWoH7hbVui+QQQvKzVGIAPGWJG2xt/YhgttiE1WizNY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qOOif1VS27bWn0w5jxQumpd4HS0Dt92yKoBKcZwzvAsCZLtyOw1gnP8hGh1RUjfS3OI1WVOsQwIpptmkq2QbW+cYkUfU+a8R75mPKdP6WWiJtU2F0aqonM6MDYaF3sVL/PbOtLjsUzWKlcgke5QLpay3SSymA1qz0SdQXjMbVuU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OwMYJZfh; 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="OwMYJZfh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8092AC4CEC3; Fri, 18 Oct 2024 20:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729284190; bh=vWoH7hbVui+QQQvKzVGIAPGWJG2xt/YhgttiE1WizNY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OwMYJZfhC3ujrslVfOGOLK0XJ/5NJx7DbBQuD0emP34DfrUdxR9CryGnD7i9+rZe5 pdh+9RN9riOkSBseaTlDCmrnbOcSgRGoQJ9lN/VG7k7SDTk/kw88b0UB4mb5564NOU g5+8VWIm1GvSgsrZ3OzssOJkrZzkYMH5yxCsLGHKNJvwajugM4r6fxXTXz3tcG4Nu/ vOoqiRP3vMO9Vl9ircH0fN5t1/+xoWfoBhgYMraRn/8KT2XqUimcz6ffw0UFg9cT9M SiAym6L4DWQy2AJH/L+9CPtTZvNMQDlZzC6j4kn8IKviqKtZ9y3ds2qAtAJ77p9/QF RWrsbuiAoyYnA== From: Jiri Olsa To: Oleg Nesterov , Peter Zijlstra , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Steven Rostedt , Masami Hiramatsu , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCHv8 bpf-next 09/13] selftests/bpf: Add uprobe session verifier test for return value Date: Fri, 18 Oct 2024 22:41:05 +0200 Message-ID: <20241018204109.713820-10-jolsa@kernel.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241018204109.713820-1-jolsa@kernel.org> References: <20241018204109.713820-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Making sure uprobe.session program can return only [0,1] values. Acked-by: Andrii Nakryiko Signed-off-by: Jiri Olsa --- .../bpf/prog_tests/uprobe_multi_test.c | 2 ++ .../bpf/progs/uprobe_multi_verifier.c | 31 +++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/uprobe_multi_verifier.c diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index 284cd7fce576..e693eeb1a5a5 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -11,6 +11,7 @@ #include "uprobe_multi_session.skel.h" #include "uprobe_multi_session_cookie.skel.h" #include "uprobe_multi_session_recursive.skel.h" +#include "uprobe_multi_verifier.skel.h" #include "bpf/libbpf_internal.h" #include "testing_helpers.h" #include "../sdt.h" @@ -1246,4 +1247,5 @@ void test_uprobe_multi_test(void) test_session_cookie_skel_api(); if (test__start_subtest("session_cookie_recursive")) test_session_recursive_skel_api(); + RUN_TESTS(uprobe_multi_verifier); } diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi_verifier.c b/tools/testing/selftests/bpf/progs/uprobe_multi_verifier.c new file mode 100644 index 000000000000..fe49f2cb5360 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/uprobe_multi_verifier.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "vmlinux.h" +#include +#include +#include +#include "bpf_misc.h" + +char _license[] SEC("license") = "GPL"; + + +SEC("uprobe.session") +__success +int uprobe_sesison_return_0(struct pt_regs *ctx) +{ + return 0; +} + +SEC("uprobe.session") +__success +int uprobe_sesison_return_1(struct pt_regs *ctx) +{ + return 1; +} + +SEC("uprobe.session") +__failure +__msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]") +int uprobe_sesison_return_2(struct pt_regs *ctx) +{ + return 2; +}