From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x22706QEkKttP+Bkz9Sj4yeA+pGfIKvUJEyJh1IdnRhl3/OjiTLGF8Vn0Efxf3XQuVO7LVpu1 ARC-Seal: i=1; a=rsa-sha256; t=1519450187; cv=none; d=google.com; s=arc-20160816; b=cZFgWovZX2hLOqjDqw7Esi8tl0fFyiVwRC6m3iCn561YJ8ENjIxjSGbjf87hdCW0QM 9xqayOmKh17lLz6PbARrTCmdnfmSPYtPdl+syBPfbUdtNe9OlEXSKdQL/uK3nepKRg7X cqxag5TVHj2OGIHLBcFFneJvY0f5BDkenbCMzv2fBY8wdeT6BnxvGO+O07GAGJUjnAg9 BEDYrXz9xOotGI2UOe5S/8rpIUx2M0bhFFLBQcNTIoMlUsfhQRJZExMHai1M/HcEAxnE fSECH/GrW1SIatHG4y7AOz0nvkMnpF3lgwaflHOAVqusRRXChMs2drmzDju9xnENjs8L iHGg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dmarc-filter:arc-authentication-results; bh=My0Y7cjct5gMcofuRdT/TMuxdaCuuwcOCok22TdhQvA=; b=f+c0+2uHT9Urvo4dIDRCINlpUp98AL9LpbkNlIuLZXSN5Q3vk9vvtWXm3S7fHg7Ubm l9rJThSQYgiW18nqa3JbDUmJZ02prMoW06g8E4B/6ViVUNXFk0u+BYmbjKsGWXaG9hly 1YvQwiI76uJscMESZvCllsyLG27VkwheSZmguao+RUO6x0+e6PjwSvM+Z39yG9mxQdQH 3PO36A9bYStouJ6BEOjSCGr0TvGU2FGGmYH3rrGIqRPb3reN9T+h2gCGndVNglFnT6yW l+iM8Zl/SJfjnPuFfsQmfC89I5FN3PJmb/I+QldfxB9cZWCkM4ahVi6NnEla36AGVwhz 4ysw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751597AbeBXF3q (ORCPT ); Sat, 24 Feb 2018 00:29:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:43854 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751584AbeBXF3p (ORCPT ); Sat, 24 Feb 2018 00:29:45 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C2BCF21741 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=mhiramat@kernel.org From: Masami Hiramatsu To: Steven Rostedt , linux-kernel@vger.kernel.org Cc: mhiramat@kernel.org, Ingo Molnar , Namhyung Kim , Tom Zanussi , Arnaldo Carvalho de Melo , linux-trace-users@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: [PATCH v3 02/18] selftests: ftrace: Add probe event argument syntax testcase Date: Sat, 24 Feb 2018 14:29:21 +0900 Message-Id: <151945016181.27508.3999524130112838660.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <151945010287.27508.6226184958678620828.stgit@devbox> References: <151945010287.27508.6226184958678620828.stgit@devbox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kselftest-owner@vger.kernel.org X-Mailing-List: linux-kselftest@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1593258999265547236?= X-GMAIL-MSGID: =?utf-8?q?1593258999265547236?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Add a testcase for probe event argument syntax which ensures the kprobe_events interface correctly parses given event arguments. Signed-off-by: Masami Hiramatsu --- .../ftrace/test.d/kprobe/kprobe_args_syntax.tc | 97 ++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc new file mode 100644 index 000000000000..231bcd2c4eb5 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc @@ -0,0 +1,97 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event argument syntax + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue + +echo 0 > events/enable +echo > kprobe_events + +PROBEFUNC="vfs_read" +GOODREG= +BADREG= +GOODSYM="_sdata" +if ! grep -qw ${GOODSYM} /proc/kallsyms ; then + GOODSYM=$PROBEFUNC +fi +BADSYM="deaqswdefr" +SYMADDR=0x`grep -w ${GOODSYM} /proc/kallsyms | cut -f 1 -d " "` +GOODTYPE="x16" +BADTYPE="y16" + +case `uname -m` in +x86_64|i[3456]86) + GOODREG=%ax + BADREG=%ex +;; +aarch64) + GOODREG=%x0 + BADREG=%ax +;; +arm*) + GOODREG=%r0 + BADREG=%ax +;; +esac + +test_goodarg() # Good-args +{ + while [ "$1" ]; do + echo "p ${PROBEFUNC} $1" > kprobe_events + shift 1 + done; +} + +test_badarg() # Bad-args +{ + while [ "$1" ]; do + ! echo "p ${PROBEFUNC} $1" > kprobe_events + shift 1 + done; +} + +echo > kprobe_events + +: "Register access" +test_goodarg ${GOODREG} +test_badarg ${BADREG} + +: "Symbol access" +test_goodarg "@${GOODSYM}" "@${SYMADDR}" "@${GOODSYM}+10" "@${GOODSYM}-10" +test_badarg "@" "@${BADSYM}" "@${GOODSYM}*10" "@${GOODSYM}/10" \ + "@${GOODSYM}%10" "@${GOODSYM}&10" "@${GOODSYM}|10" + +: "Stack access" +test_goodarg "\$stack" "\$stack0" "\$stack1" +test_badarg "\$stackp" "\$stack0+10" "\$stack1-10" + +: "Retval access" +echo "r ${PROBEFUNC} \$retval" > kprobe_events +! echo "p ${PROBEFUNC} \$retval" > kprobe_events + +: "Comm access" +test_goodarg "\$comm" + +: "Indirect memory access" +test_goodarg "+0(${GOODREG})" "-0(${GOODREG})" "+10(\$stack)" \ + "+0(\$stack1)" "+10(@${GOODSYM}-10)" "+0(+10(+20(\$stack)))" +test_badarg "+(${GOODREG})" "(${GOODREG}+10)" "-(${GOODREG})" "(${GOODREG})" \ + "+10(\$comm)" "+0(${GOODREG})+10" + +: "Name assignment" +test_goodarg "varname=${GOODREG}" +test_badarg "varname=varname2=${GOODREG}" + +: "Type syntax" +test_goodarg "${GOODREG}:${GOODTYPE}" +test_badarg "${GOODREG}::${GOODTYPE}" "${GOODREG}:${BADTYPE}" \ + "${GOODTYPE}:${GOODREG}" + +: "Combination check" + +test_goodarg "\$comm:string" "+0(\$stack):string" +test_badarg "\$comm:x64" "\$stack:string" "${GOODREG}:string" + +echo > kprobe_events