From patchwork Mon Jul 29 19:21:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 11064439 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9B61F174A for ; Mon, 29 Jul 2019 19:53:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8D278274D0 for ; Mon, 29 Jul 2019 19:53:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7E198286B1; Mon, 29 Jul 2019 19:53:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0E8D0274D0 for ; Mon, 29 Jul 2019 19:53:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=cOea/u+2LwgcY5c2GN90c/eNaPZyz6Pvl9pFolYt1tE=; b=qcV2ELMbDdqhQ1 zZtq17wt4NvOmgAATqYD0YQqT+QJ9HdWjGe5tXrH7xvGYUaFyR+dht2YHg1UfPrDuNBfqvZJ/woPs gtcNvEJE+TmTWEJXd+y9OhemVutVFHpgJKWg9TjUJlUP+X/uGBl0kgNguxqqwSLJjIKOYepaRJRJR hpLQwhjzd8PTEeTuPG36KnuhnwKryhOwctScCKeH+XlHo3Y1nuIaLuDCbovpa3Cr5rr2Ve78RuiI+ Wz24xxx1zP+oN9M9QbTT8sdP1Z+naKOqtNm6Liy5VATc5hxH0+fQdTWVpJ7Z+t0so9CmF9TDsGtf9 DB+gVNDtc6HSZRqiscGw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hsBhn-00057m-Fp; Mon, 29 Jul 2019 19:53:11 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hsBhc-000506-7Y for linux-arm-kernel@lists.infradead.org; Mon, 29 Jul 2019 19:53:02 +0000 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 4EBEA217D6; Mon, 29 Jul 2019 19:52:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564429979; bh=Ozxi2XtjT78D7Uj5XdELHqHEiY8/3tGIhhgn9AW5HS8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cuQrj0w9HhbvDlsD+gkpaYU0WYLEdIscZ0X1A9rLbPvLTM8QM/6/q2JhPeM1RrAtz 0M9YxlgOAIy3yYt17p0YOK1OdmjQ9Xdc9mpDAukiwOEn0NTTU6+zjuwfYJ0NeOwypg NYsbTzsAszedlKfRSzCi+K101kEyQ+mloHEXXWkc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Subject: [PATCH 5.2 120/215] perf stat: Fix use-after-freed pointer detected by the smatch tool Date: Mon, 29 Jul 2019 21:21:56 +0200 Message-Id: <20190729190759.928908021@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190729190739.971253303@linuxfoundation.org> References: <20190729190739.971253303@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190729_125300_365302_DE053FB8 X-CRM114-Status: GOOD ( 13.06 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Song Liu , Konstantin Khlebnikov , Rasmus Villemoes , Jin Yao , Sasha Levin , Andi Kleen , Alexey Budankov , Alexander Shishkin , Suzuki Poulouse , Arnaldo Carvalho de Melo , Alexios Zavras , Davidlohr Bueso , Namhyung Kim , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Mathieu Poirier , Greg Kroah-Hartman , Thomas Richter , Adrian Hunter , stable@vger.kernel.org, "David S. Miller" , Changbin Du , Peter Zijlstra , Jiri Olsa , Leo Yan , Eric Saint-Etienne Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP [ Upstream commit c74b05030edb3b52f4208d8415b8c933bc509a29 ] Based on the following report from Smatch, fix the use-after-freed pointer. tools/perf/builtin-stat.c:1353 add_default_attributes() warn: passing freed memory 'str'. The pointer 'str' has been freed but later it is still passed into the function parse_events_print_error(). This patch fixes this use-after-freed issue. Signed-off-by: Leo Yan Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Alexios Zavras Cc: Andi Kleen Cc: Changbin Du Cc: Davidlohr Bueso Cc: David S. Miller Cc: Eric Saint-Etienne Cc: Jin Yao Cc: Konstantin Khlebnikov Cc: linux-arm-kernel@lists.infradead.org Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Rasmus Villemoes Cc: Song Liu Cc: Suzuki Poulouse Cc: Thomas Gleixner Cc: Thomas Richter Link: http://lkml.kernel.org/r/20190702103420.27540-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/builtin-stat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 1ae66f09dc7d..e28002d90573 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1276,8 +1276,8 @@ static int add_default_attributes(void) fprintf(stderr, "Cannot set up top down events %s: %d\n", str, err); - free(str); parse_events_print_error(&errinfo, str); + free(str); return -1; } } else {