From patchwork Tue Jul 9 18:31:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaldo Carvalho de Melo X-Patchwork-Id: 11037319 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 00BB3138D for ; Tue, 9 Jul 2019 18:31:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E1464287C9 for ; Tue, 9 Jul 2019 18:31:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CF3682884E; Tue, 9 Jul 2019 18:31:53 +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 2FD7F287C9 for ; Tue, 9 Jul 2019 18:31:53 +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=rmx+gX+BdU7jNV8rqhlJj4ZUEBhfoD71LkVJXIM5V3o=; b=CcWSbuHy0XScgH zU+4dmG4RE84Ba3VaWOzGYtiula341ZOzlwmz/PqGP77xX9CL5jip5a2fgmELlxc9wlGmyniLQp5x +qqkJoqqhIB2ITtli4H8Bq3Fu7sB1E/yXmnx4dkvZiAB05yI7T34ccr1wcRLQsLWbJfPPwR/o7e/Y hHhxhf+0/4ZhVqG1Lmwhw/QAKXGuR2sydaPHGkIiCq7/XbxuDfmXr+wTTM6RDAyZV3tlt3mtqyAtu CxBjOlDe7l9oNHdLq+NQ19yDJhcf50uS/hjd6H4qftbapFCdUXpuoOx57M+qpMoe0o0C4eCmZ5JWt sdLLyfLGUMlDEJt6AyWw==; 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 1hkuu8-0005cw-PC; Tue, 09 Jul 2019 18:31:52 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hkuu4-0005bu-6a for linux-arm-kernel@lists.infradead.org; Tue, 09 Jul 2019 18:31:50 +0000 Received: from quaco.ghostprotocols.net (unknown [179.97.35.11]) (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 A82CA214AF; Tue, 9 Jul 2019 18:31:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562697107; bh=aVZ0iIxfrqicomtqFbAEDq8CdAhVe14Oy+wL/zknopw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F2bTdox0H8xFhe/mRht+zvTN+TcE0KZL6eOYL7Iz06XZSNfhoYDeICfpNcc8HlFmh qffXnJhZjtN1ZwyWplr3H34bUl2VVKmNx01Fi5UBTmfdAgHzKSBsOg0I94n/LbQfqd jSkDNMv8Doc+kAOxjTV9cmEcolzf/VhAHmMpoSGY= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Subject: [PATCH 02/25] perf stat: Fix use-after-freed pointer detected by the smatch tool Date: Tue, 9 Jul 2019 15:31:03 -0300 Message-Id: <20190709183126.30257-3-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190709183126.30257-1-acme@kernel.org> References: <20190709183126.30257-1-acme@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190709_113148_276655_7465F884 X-CRM114-Status: GOOD ( 11.31 ) 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 , Adrian Hunter , Jin Yao , Andi Kleen , Alexey Budankov , Clark Williams , Suzuki Poulouse , Arnaldo Carvalho de Melo , Alexios Zavras , Davidlohr Bueso , Namhyung Kim , linux-arm-kernel@lists.infradead.org, Mathieu Poirier , Thomas Richter , linux-kernel@vger.kernel.org, Alexander Shishkin , "David S . Miller" , linux-perf-users@vger.kernel.org, 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 From: Leo Yan 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 --- 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 e5e19b461061..b81f7b197d24 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1349,8 +1349,8 @@ 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 {