From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752603AbYJ0PqY (ORCPT ); Mon, 27 Oct 2008 11:46:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751281AbYJ0PqQ (ORCPT ); Mon, 27 Oct 2008 11:46:16 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:41980 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750866AbYJ0PqQ (ORCPT ); Mon, 27 Oct 2008 11:46:16 -0400 Date: Mon, 27 Oct 2008 16:46:00 +0100 From: Ingo Molnar To: Frederic Weisbecker Cc: Linux Kernel Subject: Re: [PATCH][RESEND] tracepoint: Check if the probe has been registered Message-ID: <20081027154600.GO5704@elte.hu> References: <48FF5F8F.6070202@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48FF5F8F.6070202@gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00,DNS_FROM_SECURITYSAGE autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0028] 0.0 DNS_FROM_SECURITYSAGE RBL: Envelope sender in blackholes.securitysage.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Frederic Weisbecker wrote: > If we try to remove a probe that has not been already registered, > the tracepoint_entry_remove_probe() function will dereference a NULL > pointer. > Check the probe before removing it to avoid crashes. > > Signed-off-by: Frederic Weisbecker > Acked-by: Mathieu Desnoyers > Acked-by: Steven Rostedt > --- > kernel/tracepoint.c | 8 ++++++++ > 1 files changed, 8 insertions(+), 0 deletions(-) applied to tip/tracing/urgent, thanks Frederic! Ingo