From patchwork Fri Nov 8 13:45:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 13868225 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 D2B721EBA1E; Fri, 8 Nov 2024 13:47:54 +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=1731073674; cv=none; b=bvKs/KmpJWhjrZxVqiHWgJL2DSe57SuMvMV2fiB0/XFJbxb3voxhwp/zCcTBdnB2X7r+VUav/idM7kNsSFL35kgYAA2ah7jnF3JnAQtPQp87OB6xJf5x+x+HIysydzCAf5qavtoyqRfnIGTXs+P0y0hqWaR84DuhgzhKJrnhApw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731073674; c=relaxed/simple; bh=z2DCLT1FLhrnevYpBg3PNT7Zgn1AasGN0zBJOW7Prv0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=j2rsBWtcmKaGHphwTBnLluDZF5A6GWEGa+CnoDqi8JauKQnEgoGygcZ27+XgoTqj42Il06FQOtagEv7dWSewsPLrV78vuTfEw7RnePxGDnEYH6UsUe1zBs62FzS7zsZ2JffzJmwUn3XXMjBuJ+FqHKj5r55Vz/y4RRVIxhGQ6ck= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rhwDzYri; 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="rhwDzYri" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 650D1C4CECD; Fri, 8 Nov 2024 13:47:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1731073674; bh=z2DCLT1FLhrnevYpBg3PNT7Zgn1AasGN0zBJOW7Prv0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rhwDzYriXgz5optmfGpishHClAwOp2Xe3aJkSjuSA7EwFmO41jBfAxCJEPduBdI03 D7wLwjXfUJXD0LMGUhv1/bgsRBtxV8SCVu+E52FyY21DNxm4XSH96fXGovQ776ID2U B/NYqCLjXNPPd/YYxib6CPghEVqccMBWvmArdwgs1kFvRW6b9Y5E+AEM3uGWMUkRU2 9wBkzFfPKdrxydh8CswjLgi+ojCBHNA/77OEsMzM69vpApvnAjNMu7NfEeiwa6n9gA wtOTk7WjskioARZZFvu3UKi+uaRwy6hVW6JNDRtveXc2waKOdr9Qa20HI7B+gm2IVp u05q2upyghhpQ== 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: [PATCHv9 bpf-next 09/13] selftests/bpf: Add uprobe session verifier test for return value Date: Fri, 8 Nov 2024 14:45:40 +0100 Message-ID: <20241108134544.480660-10-jolsa@kernel.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241108134544.480660-1-jolsa@kernel.org> References: <20241108134544.480660-1-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 b9448fb63a19..5dad31d1b606 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" @@ -1248,4 +1249,5 @@ 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; +}