From mboxrd@z Thu Jan 1 00:00:00 1970 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, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 F081DC433DF for ; Thu, 30 Jul 2020 06:37:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB5FE2065E for ; Thu, 30 Jul 2020 06:37:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728586AbgG3Ghv (ORCPT ); Thu, 30 Jul 2020 02:37:51 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:8300 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725892AbgG3Ghv (ORCPT ); Thu, 30 Jul 2020 02:37:51 -0400 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id B002FC277C6F562E7155; Thu, 30 Jul 2020 14:37:46 +0800 (CST) Received: from huawei.com (10.175.113.133) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Thu, 30 Jul 2020 14:37:43 +0800 From: Wang Hai To: , , , , CC: , Subject: [PATCH] s390/test_unwind: fix possible memleak in test_unwind() Date: Thu, 30 Jul 2020 14:36:02 +0800 Message-ID: <20200730063602.31581-1-wanghai38@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.113.133] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org test_unwind() misses to call kfree(bt) in an error path. Add the missed function call to fix it. Fixes: 0610154650f1 ("s390/test_unwind: print verbose unwinding results") Reported-by: Hulk Robot Signed-off-by: Wang Hai --- arch/s390/lib/test_unwind.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c index 32b7a30b2485..b0b12b46bc57 100644 --- a/arch/s390/lib/test_unwind.c +++ b/arch/s390/lib/test_unwind.c @@ -63,6 +63,7 @@ static noinline int test_unwind(struct task_struct *task, struct pt_regs *regs, break; if (state.reliable && !addr) { pr_err("unwind state reliable but addr is 0\n"); + kfree(bt); return -EINVAL; } sprint_symbol(sym, addr); -- 2.17.1