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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 C87A3C43603 for ; Wed, 11 Dec 2019 15:28:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 91F3D208C3 for ; Wed, 11 Dec 2019 15:28:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576078104; bh=R7eY9aHdrcCt7uzhurYIB7GJmkTeGmIKSQ3WZRcxiD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=L7vtMCS6Wp7dasjVkQah6g3MspgZL0AEx6Pdw/QVNLKImE9D9e3cznjzvRsQnvlcE MotmhrGEBf+VGQe+I2hAnibjOdsBHgMQiyoeTAox9K6qNYL0uDQH21q+M5fLHviQ6K OclDpdl5ADttX/KVaK8c2R/NDstyoOuq3LoSVIeg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387597AbfLKP2X (ORCPT ); Wed, 11 Dec 2019 10:28:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:33872 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387512AbfLKP17 (ORCPT ); Wed, 11 Dec 2019 10:27:59 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D4A602467A; Wed, 11 Dec 2019 15:27:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576078077; bh=R7eY9aHdrcCt7uzhurYIB7GJmkTeGmIKSQ3WZRcxiD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jG4YodmOpIcc9B00/nc0VJmISlUsjA11KjiA7XA4I3QZ4Quw0CYbuCOy44XXPU8nN rVfawpCrhuCtQXet3/meivWsrFlNkDezgonZ+K3CYBxXw2qsvhi9GCkuUV+PGxW3kz jo11BuL+rThxDIQ1X9FuSK4AufZeISKeZR4haM80= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Erhard Furtner , Michael Ellerman , Tyrel Datwyler , Rob Herring , Sasha Levin , devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 68/79] of: unittest: fix memory leak in attach_node_and_children Date: Wed, 11 Dec 2019 10:26:32 -0500 Message-Id: <20191211152643.23056-68-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191211152643.23056-1-sashal@kernel.org> References: <20191211152643.23056-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Erhard Furtner [ Upstream commit 2aacace6dbbb6b6ce4e177e6c7ea901f389c0472 ] In attach_node_and_children memory is allocated for full_name via kasprintf. If the condition of the 1st if is not met the function returns early without freeing the memory. Add a kfree() to fix that. This has been detected with kmemleak: Link: https://bugzilla.kernel.org/show_bug.cgi?id=205327 It looks like the leak was introduced by this commit: Fixes: 5babefb7f7ab ("of: unittest: allow base devicetree to have symbol metadata") Signed-off-by: Erhard Furtner Reviewed-by: Michael Ellerman Reviewed-by: Tyrel Datwyler Signed-off-by: Rob Herring Signed-off-by: Sasha Levin --- drivers/of/unittest.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 68f52966bbc04..808571f7f6ef9 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -1133,8 +1133,10 @@ static void attach_node_and_children(struct device_node *np) full_name = kasprintf(GFP_KERNEL, "%pOF", np); if (!strcmp(full_name, "/__local_fixups__") || - !strcmp(full_name, "/__fixups__")) + !strcmp(full_name, "/__fixups__")) { + kfree(full_name); return; + } dup = of_find_node_by_path(full_name); kfree(full_name); -- 2.20.1