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=unavailable 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 14B07C433DF for ; Tue, 9 Jun 2020 00:46:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D469C20774 for ; Tue, 9 Jun 2020 00:45:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591663559; bh=3RrjVjucjaQRqQ0XpzGPy0vis0dtQ3RxxAdXgJmrAC4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XJuFCuQ3JUuf5AEw3pll//9lx+h5Mqp4DMx37ANlrRFRH0SJ8b5NSV8/7BBtv3/95 tZxB84ToeZBqI29E3wtF32inZwK0HFQGkdsf8GCDxImMvFQoh63xlZKHzKz7mbcnKz FGbJmo+x4XOAY/mB+JPux3GMdLwql4oWpBSfNJPw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730864AbgFIAp7 (ORCPT ); Mon, 8 Jun 2020 20:45:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:58752 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728234AbgFHXLo (ORCPT ); Mon, 8 Jun 2020 19:11:44 -0400 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 3648D21508; Mon, 8 Jun 2020 23:11:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591657903; bh=3RrjVjucjaQRqQ0XpzGPy0vis0dtQ3RxxAdXgJmrAC4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nJZYs9AHcvtBqOZ/0evyRmorFpTprlg5EB1khVH8jcjf+InDEJUCWRnzCRNPIMCB2 +JHYBI2xMHDPNgrjU08S3odzdDSLWU5jym3aRwbC6Bpla/46ivNxNo+R1BeLlAZGwo ATPhWgygZm9NucV5o+h3AMTvg/UzOIRGJiLSoVYo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Qiushi Wu , "Rafael J . Wysocki" , Sasha Levin , linux-pm@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 256/274] cpuidle: Fix three reference count leaks Date: Mon, 8 Jun 2020 19:05:49 -0400 Message-Id: <20200608230607.3361041-256-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608230607.3361041-1-sashal@kernel.org> References: <20200608230607.3361041-1-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: Qiushi Wu [ Upstream commit c343bf1ba5efcbf2266a1fe3baefec9cc82f867f ] kobject_init_and_add() takes reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Previous commit "b8eb718348b8" fixed a similar problem. Signed-off-by: Qiushi Wu [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/cpuidle/sysfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index cdeedbf02646..55107565b319 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -515,7 +515,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device) ret = kobject_init_and_add(&kobj->kobj, &ktype_state_cpuidle, &kdev->kobj, "state%d", i); if (ret) { - kfree(kobj); + kobject_put(&kobj->kobj); goto error_state; } cpuidle_add_s2idle_attr_group(kobj); @@ -646,7 +646,7 @@ static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev) ret = kobject_init_and_add(&kdrv->kobj, &ktype_driver_cpuidle, &kdev->kobj, "driver"); if (ret) { - kfree(kdrv); + kobject_put(&kdrv->kobj); return ret; } @@ -740,7 +740,7 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev) error = kobject_init_and_add(&kdev->kobj, &ktype_cpuidle, &cpu_dev->kobj, "cpuidle"); if (error) { - kfree(kdev); + kobject_put(&kdev->kobj); return error; } -- 2.25.1