From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3308147-1523479519-2-7503565865287110660 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, MAILING_LIST_MULTI -1, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1523479518; b=MP2yF9tm1vDhW120/9nm6sQv47m2X13A0Pj3Ju7IwBQWp3kTw3 fEo0VBErq+MfW1mRBRglZgW8vPM243bwarIwBQTZuzpEkVSxnqar+n2wLt4l5DQW 6YfHyD+YLMR4RtH0NcDSh90iPr1/ooDykPjm1PabhuX95nojv+nDTvUzwb6mTgBP x6TOcZ9PM8QiBjgBzhZc5XFvoEh1BAWMPNWxQadRfu7f2iyqknHttITUTNfD0SOX GqVEV3ZAP5z7WMMmeoW99G0eWdwupsoUvU4Tj/BIkskmaEHhj7F8uD4hL9/a6vHy sz1AaZm0D0UjrBVUW3F0UePOy9RnjgDJc61g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=fm2; t=1523479518; bh=VPFDHU6+yzCmS4VfT+zAS3tuDczIxI NhJL6JuGVc//o=; b=xAYSL3aKv7DtwygA2Pb1PW0/ui8Kg1QfD0flnkqm2ShJkq yR0e+ZWbZf5DT42PvgWXmdNpk7amUfG7hiYnyLkDV51/bAhDV2xy4ngJ69xTzCxE qRCZ5YK895j4QV3rVEZqcA7WdrVtrabZCodEcj4Vo0p8vBnf0PbYJE0vWmOjrrwz FEIHyxf+5i2M1MBtQbYzPO/QNAWS9VgmcDrDgapR83/JjciCyyz+mwjBr9ZubmJV 3d9bx6ZQn5YlaQubH18C0Gp3vTLM1jMdLxyxARqSP/tL3bAFpZ5I5aNHjcqvYnSj KJasQ3OIkzJSDF/KNRcIWGaXkzE4p38igzx8SwqA== ARC-Authentication-Results: i=1; mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfP0P9tvxNZxBVfIM3ve8FPDFO8wwatfzlNy+KFsLKP/3N4wM1yDil+MlzVeh6eGbzpJz8Mb5HN6r6Te5vHqvJ9A1w6g+n+m40Y+YrbY0/mjTvLT+Kqla +DjC1pk99+BEVrhIOQucVOO21Pppsjd80ozXc5U24gfr5iaSB3BCZkaAF4oh/ctDmV5VsL1+q5upXYnub8PKUURyGvPfPnXMus46+WO0apkFxMUw/b2UDC6s X-CM-Analysis: v=2.3 cv=Tq3Iegfh c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=Kd1tUaAdevIA:10 a=VwQbUJbxAAAA:8 a=20KFwNOVAAAA:8 a=VnNF1IyMAAAA:8 a=pGLkceISAAAA:8 a=yMhMjlubAAAA:8 a=ag1SF4gXAAAA:8 a=XY9_J5gOtC_FUSJH_rwA:9 a=0bXxn9q0MV6snEgNplNhOjQmxlI=:19 a=QEXdDO2ut3YA:10 a=AjGcO6oz07-iQ99wixmX:22 a=Yupwre4RP9_Eg_Bd0iYG:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755849AbeDKUpC (ORCPT ); Wed, 11 Apr 2018 16:45:02 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:59156 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755832AbeDKSrH (ORCPT ); Wed, 11 Apr 2018 14:47:07 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnaldo Carvalho de Melo , Masami Hiramatsu , Ravi Bangoria , Thomas Richter , Paul Clarke , bhargavb , linux-rt-users@vger.kernel.org, Sasha Levin Subject: [PATCH 4.4 083/190] perf probe: Add warning message if there is unexpected event name Date: Wed, 11 Apr 2018 20:35:29 +0200 Message-Id: <20180411183555.454699178@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180411183550.114495991@linuxfoundation.org> References: <20180411183550.114495991@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Masami Hiramatsu [ Upstream commit 9f5c6d8777a2d962b0eeacb2a16f37da6bea545b ] This improve the error message so that user can know event-name error before writing new events to kprobe-events interface. E.g. ====== #./perf probe -x /lib64/libc-2.25.so malloc_get_state* Internal error: "malloc_get_state@GLIBC_2" is an invalid event name. Error: Failed to add events. ====== Reported-by: Arnaldo Carvalho de Melo Signed-off-by: Masami Hiramatsu Acked-by: Ravi Bangoria Reviewed-by: Thomas Richter Tested-by: Arnaldo Carvalho de Melo Cc: Paul Clarke Cc: bhargavb Cc: linux-rt-users@vger.kernel.org Link: http://lkml.kernel.org/r/151275040665.24652.5188568529237584489.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/probe-event.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2349,6 +2349,14 @@ static int get_new_event_name(char *buf, out: free(nbase); + + /* Final validation */ + if (ret >= 0 && !is_c_func_name(buf)) { + pr_warning("Internal error: \"%s\" is an invalid event name.\n", + buf); + ret = -EINVAL; + } + return ret; }