Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932576AbbENMXg (ORCPT ); Thu, 14 May 2015 08:23:36 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:38609 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932091AbbENMXf (ORCPT ); Thu, 14 May 2015 08:23:35 -0400 From: Wang Nan To: , , , , , , , CC: , , , Subject: [PATCH] tools perf: set vmlinux_path__nr_entries to 0 in vmlinux_path__exit. Date: Thu, 14 May 2015 12:22:30 +0000 Message-ID: <1431606150-163436-1-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.197.200] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1139 Lines: 33 Original vmlinux_path__exit() doesn't revert vmlinux_path__nr_entries to its original state. After the while loop vmlinux_path__nr_entries becomes -1 instead of 0. This makes a problem that, if runs twice, during the second run vmlinux_path__init() will set vmlinux_path[-1] to strdup("vmlinux"), corrupts random memory. This patch reset vmlinux_path__nr_entries to 0 after the while loop. Signed-off-by: Wang Nan --- tools/perf/util/symbol.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 201f6c4c..451777f 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1802,6 +1802,7 @@ static void vmlinux_path__exit(void) { while (--vmlinux_path__nr_entries >= 0) zfree(&vmlinux_path[vmlinux_path__nr_entries]); + vmlinux_path__nr_entries = 0; zfree(&vmlinux_path); } -- 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/