From patchwork Sun May 14 14:12:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Masami Hiramatsu (Google)" X-Patchwork-Id: 13240484 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50411C7EE22 for ; Sun, 14 May 2023 14:13:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237428AbjENONQ (ORCPT ); Sun, 14 May 2023 10:13:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237812AbjENONH (ORCPT ); Sun, 14 May 2023 10:13:07 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44B3E35A8; Sun, 14 May 2023 07:12:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 364A5617BE; Sun, 14 May 2023 14:12:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 663DDC433D2; Sun, 14 May 2023 14:12:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684073554; bh=6vun2L7Gqdjfz6gS8Y5EPS6ytnutljhikv/zk9HDEk8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U2A0/tg7UR5PjecdTpJdXLR/4eX/kds+Ulme99N76Bp8VPKEkKa87H6Saz8hmRCd+ OvNQN070cuRP4htsbvgp3OdVtZpeihFQAN6nO+TPfv8S0QpIMC/CXZV7C8+wHJS6tk 701VgjQ03tobkyC21dNZ1rimnk6C+OfXL3onUZ2R8nuVOXKOzBooJ7VDuwJ3iCEtvv Q/FN2Hvw+81Sz/1Uolom9XsrTYxi27F3+JImpjR2yDxfSzyM9jfWNqJFHPRAqfdpzs rEheDZaFltahzLd+vIbf/zL7mHk0nebcut94Sl4xWDz3osHpmzcJ8e2eptuvlwaHKq 4y9tIe2eEW4Yg== From: "Masami Hiramatsu (Google)" To: linux-trace-kernel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Steven Rostedt , mhiramat@kernel.org, Florent Revest , Mark Rutland , Will Deacon , Mathieu Desnoyers , Martin KaFai Lau , bpf@vger.kernel.org Subject: [PATCH v10 09/11] selftests/ftrace: Add tracepoint probe test case Date: Sun, 14 May 2023 23:12:30 +0900 Message-ID: <168407355022.941486.7431028073622858704.stgit@mhiramat.roam.corp.google.com> X-Mailer: git-send-email 2.40.1.606.ga4b1b128d6-goog In-Reply-To: <168407346448.941486.15681419068846125595.stgit@mhiramat.roam.corp.google.com> References: <168407346448.941486.15681419068846125595.stgit@mhiramat.roam.corp.google.com> User-Agent: StGit/0.19 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org From: Masami Hiramatsu (Google) Add test cases for tracepoint probe events. Signed-off-by: Masami Hiramatsu (Google) --- .../ftrace/test.d/dynevent/add_remove_tprobe.tc | 27 +++++++ .../ftrace/test.d/dynevent/tprobe_syntax_errors.tc | 82 ++++++++++++++++++++ 2 files changed, 109 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc new file mode 100644 index 000000000000..afc8412fde6b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc @@ -0,0 +1,27 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove tracepoint probe events +# requires: dynamic_events "t[:[/][]] []": README + +echo 0 > events/enable +echo > dynamic_events + +TRACEPOINT1=kmem_cache_alloc +TRACEPOINT2=kmem_cache_free + +echo "t:myevent1 $TRACEPOINT1" >> dynamic_events +echo "t:myevent2 $TRACEPOINT2" >> dynamic_events + +grep -q myevent1 dynamic_events +grep -q myevent2 dynamic_events +test -d events/tracepoints/myevent1 +test -d events/tracepoints/myevent2 + +echo "-:myevent2" >> dynamic_events + +grep -q myevent1 dynamic_events +! grep -q myevent2 dynamic_events + +echo > dynamic_events + +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc new file mode 100644 index 000000000000..c8dac5c1cfa8 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc @@ -0,0 +1,82 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Tracepoint probe event parser error log check +# requires: dynamic_events "t[:[/][]] []": README + +check_error() { # command-with-error-pos-by-^ + ftrace_errlog_check 'trace_fprobe' "$1" 'dynamic_events' +} + +check_error 't^100 kfree' # BAD_MAXACT_TYPE + +check_error 't ^non_exist_tracepoint' # NO_TRACEPOINT +check_error 't:^/bar kfree' # NO_GROUP_NAME +check_error 't:^12345678901234567890123456789012345678901234567890123456789012345/bar kfree' # GROUP_TOO_LONG + +check_error 't:^foo.1/bar kfree' # BAD_GROUP_NAME +check_error 't:^ kfree' # NO_EVENT_NAME +check_error 't:foo/^12345678901234567890123456789012345678901234567890123456789012345 kfree' # EVENT_TOO_LONG +check_error 't:foo/^bar.1 kfree' # BAD_EVENT_NAME + +check_error 't kfree ^$retval' # RETVAL_ON_PROBE +check_error 't kfree ^$stack10000' # BAD_STACK_NUM + +check_error 't kfree ^$arg10000' # BAD_ARG_NUM + +check_error 't kfree ^$none_var' # BAD_VAR +check_error 't kfree ^%rax' # BAD_VAR + +check_error 't kfree ^@12345678abcde' # BAD_MEM_ADDR +check_error 't kfree ^@+10' # FILE_ON_KPROBE + +grep -q "imm-value" README && \ +check_error 't kfree arg1=\^x' # BAD_IMM +grep -q "imm-string" README && \ +check_error 't kfree arg1=\"abcd^' # IMMSTR_NO_CLOSE + +check_error 't kfree ^+0@0)' # DEREF_NEED_BRACE +check_error 't kfree ^+0ab1(@0)' # BAD_DEREF_OFFS +check_error 't kfree +0(+0(@0^)' # DEREF_OPEN_BRACE + +if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then +check_error 't kfree +0(^$comm)' # COMM_CANT_DEREF +fi + +check_error 't kfree ^&1' # BAD_FETCH_ARG + + +# We've introduced this limitation with array support +if grep -q ' \\\[\\\]' README; then +check_error 't kfree +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))' # TOO_MANY_OPS? +check_error 't kfree +0(@11):u8[10^' # ARRAY_NO_CLOSE +check_error 't kfree +0(@11):u8[10]^a' # BAD_ARRAY_SUFFIX +check_error 't kfree +0(@11):u8[^10a]' # BAD_ARRAY_NUM +check_error 't kfree +0(@11):u8[^256]' # ARRAY_TOO_BIG +fi + +check_error 't kfree @11:^unknown_type' # BAD_TYPE +check_error 't kfree $stack0:^string' # BAD_STRING +check_error 't kfree @11:^b10@a/16' # BAD_BITFIELD + +check_error 't kfree ^arg123456789012345678901234567890=@11' # ARG_NAME_TOO_LOG +check_error 't kfree ^=@11' # NO_ARG_NAME +check_error 't kfree ^var.1=@11' # BAD_ARG_NAME +check_error 't kfree var1=@11 ^var1=@12' # USED_ARG_NAME +check_error 't kfree ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))' # ARG_TOO_LONG +check_error 't kfree arg1=^' # NO_ARG_BODY + + +# multiprobe errors +if grep -q "Create/append/" README && grep -q "imm-value" README; then +echo "t:tracepoint/testevent kfree" > dynamic_events +check_error '^f:tracepoint/testevent kfree' # DIFF_PROBE_TYPE + +# Explicitly use printf "%s" to not interpret \1 +printf "%s" "t:tracepoints/testevent kfree abcd=\\1" > dynamic_events +check_error "t:tracepoints/testevent kfree ^bcd=\\1" # DIFF_ARG_TYPE +check_error "t:tracepoints/testevent kfree ^abcd=\\1:u8" # DIFF_ARG_TYPE +check_error "t:tracepoints/testevent kfree ^abcd=\\\"foo\"" # DIFF_ARG_TYPE +check_error "^t:tracepoints/testevent kfree abcd=\\1" # SAME_PROBE +fi + +exit 0