From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755341Ab0ANCwn (ORCPT ); Wed, 13 Jan 2010 21:52:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753656Ab0ANCwm (ORCPT ); Wed, 13 Jan 2010 21:52:42 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:51460 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1753615Ab0ANCwm (ORCPT ); Wed, 13 Jan 2010 21:52:42 -0500 Message-ID: <4B4E86FB.40208@cn.fujitsu.com> Date: Thu, 14 Jan 2010 10:52:43 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Thunderbird/3.0b2 MIME-Version: 1.0 To: Ingo Molnar CC: Steven Rostedt , Frederic Weisbecker , LKML Subject: [PATCH 0/7][RESEND] tracing: Fix bugs in string filters. Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset fixes some bugs in string filters. Those bugs affect both ftrace and perf-trace. A new string helper strnstr() is introduced, to be used in middle matching callback. Also I add some comments to mainly explain why we should use length-limited version of strstr() and strcmp(). --- include/linux/string.h | 5 ++++- kernel/trace/ftrace.c | 6 +++--- kernel/trace/trace_events_filter.c | 29 ++++++++++++++++++++--------- lib/string.c | 27 ++++++++++++++++++++++++++- 4 files changed, 53 insertions(+), 14 deletions(-)