From patchwork Mon Aug 3 12:19:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 266887 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1B370C433E3 for ; Mon, 3 Aug 2020 12:31:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E665620775 for ; Mon, 3 Aug 2020 12:31:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596457908; bh=Hy8mBhV7h9SLwvg7GqfwObL1tL77wSLQh01A/CTIrhY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=hschZMig3+VYILTlNIkBmCbNLvcSScmOm1Xn5bSyLw8xY3m7jHYTmXKYWMleNeHkh 0l4nPSSanLmjxOdgx0JwNacc1mFcdj5zhvCuUDUwyQsfcs4ThW3l3o7AMpx/O/sSzW V7a1CJqXPdmZm3oXSb4kmGOEFUqe+PQnnqbwZ9Jg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729216AbgHCMbr (ORCPT ); Mon, 3 Aug 2020 08:31:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:59498 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729224AbgHCMbq (ORCPT ); Mon, 3 Aug 2020 08:31:46 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E80EF208E4; Mon, 3 Aug 2020 12:31:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596457905; bh=Hy8mBhV7h9SLwvg7GqfwObL1tL77wSLQh01A/CTIrhY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qq+s4C6vfk0jeZhnLAkglojCP564gH8MRuQyRgEY4eEANy6j5z+K2GdYG+yCiN/JW bJQx9TGnwpFc1uvnQwDPDpvfftHHUWtdK5+wyOVL10M76AzndC1oM2lBw2CT/skMGI /oYKwo1toVMtksa5Jc294nfTTgoutqTiRfA3xjxA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Navid Emamdoost , "Steven Rostedt (VMware)" , Sasha Levin Subject: [PATCH 4.19 05/56] tracing: Have error path in predicate_parse() free its allocated memory Date: Mon, 3 Aug 2020 14:19:20 +0200 Message-Id: <20200803121850.577138860@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200803121850.306734207@linuxfoundation.org> References: <20200803121850.306734207@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Navid Emamdoost [ Upstream commit 96c5c6e6a5b6db592acae039fed54b5c8844cd35 ] In predicate_parse, there is an error path that is not going to out_free instead it returns directly which leads to a memory leak. Link: http://lkml.kernel.org/r/20190920225800.3870-1-navid.emamdoost@gmail.com Signed-off-by: Navid Emamdoost Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Sasha Levin --- kernel/trace/trace_events_filter.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index b949c3917c679..9be3d1d1fcb47 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -451,8 +451,10 @@ predicate_parse(const char *str, int nr_parens, int nr_preds, switch (*next) { case '(': /* #2 */ - if (top - op_stack > nr_parens) - return ERR_PTR(-EINVAL); + if (top - op_stack > nr_parens) { + ret = -EINVAL; + goto out_free; + } *(++top) = invert; continue; case '!': /* #3 */