From nobody Mon May 6 13:09:53 2024 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 1641800786220693.2195247632977; Sun, 9 Jan 2022 23:46:26 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243268AbiAJHpG (ORCPT ); Mon, 10 Jan 2022 02:45:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241506AbiAJHfy (ORCPT ); Mon, 10 Jan 2022 02:35:54 -0500 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C90EDC028BF2 for ; Sun, 9 Jan 2022 23:31:08 -0800 (PST) Received: by mail-pg1-x532.google.com with SMTP id t32so10433244pgm.7 for ; Sun, 09 Jan 2022 23:31:08 -0800 (PST) Received: from localhost.localdomain ([159.226.95.43]) by smtp.googlemail.com with ESMTPSA id w2sm4604589pgt.93.2022.01.09.23.31.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Jan 2022 23:31:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id; bh=ocO6AD5IZFEF2fcpwCjlmCykPdbWqPQxRpQgFoAA8Yw=; b=AmTZGJScRDz3Z4ic1Kk2L/U1nJgZT8wshUfZ8ZKYhUMsfN7lcL+GqftGlit40Tb7T8 I6DiWwMI4JgBK25/vj5rSXVPuOyzYf6XxiRNxTYtz1qJooWE3e0NLEgOLO0gLGIN9iTK eWP+DDsjuJu9P2aqqrSLP0ZPG74KmNNioUjqR5YISeBKtOmgtdYnyYCaBOStESd5XNbm uJBg088HVO+P8gdBmCG3dtccuj+D4Akjfi7DyAKDilu7kEkBxc2UTzW7dQd2MMWq32iu i29akqFcm6TOLCSOKsmwd4uxhnHYIQ8JQykggsZI2N3so+DuMwQIp9F4o6tsattnq3xY FYMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=ocO6AD5IZFEF2fcpwCjlmCykPdbWqPQxRpQgFoAA8Yw=; b=pme0aeXpItJ5KBjeeUcwJpaFTcK+l/war0A8Yy4acjhcqWD58XoJzZSS+uywKSZUtk MbqOlo77oa4Ph8Lipn4qZ/0ZM1UrxIiNsbQMytZ8GlGXrWkB3lXFYjdGA0v86iNUlmQQ WotGdRHwTnGzft5irKs+n88LQrXPpd5tj2ShvWBaU4Ax8KByK+WXoEaCZ7scKgQhKSaG cv15Brw2jbj8SMxcdpXUv+wIeY/W12haOLezZVbvWBzMm0gGcQi5kQkdFlBS/fi+OxCf 9mgi54jZJuPOZbI6gaood+bxWqJLVVz68yGYIRzEFzKDC9vdK5k3xvRgEkNjyAniIj+o J9Dw== X-Gm-Message-State: AOAM531xZjhVbQ66Of82zfyl3I29pPS6H9isfukcRKWaVfPEL5VDYj/s hBIEo0U3svXD3CKJspHSu+U= X-Google-Smtp-Source: ABdhPJwNd99kMRjYeM+oFG8pgS4dz7JV4lfXvkTzZatdQflIwOFGgDZfZMi9isMQUl4DMGnaRzF6+Q== X-Received: by 2002:a63:741c:: with SMTP id p28mr1818794pgc.277.1641799868416; Sun, 09 Jan 2022 23:31:08 -0800 (PST) From: Miaoqian Lin Cc: linmq006@gmail.com, Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] coresight: syscfg: Fix memleak on registration failure in cscfg_create_device Date: Mon, 10 Jan 2022 07:31:00 +0000 Message-Id: <20220110073100.15497-1-linmq006@gmail.com> X-Mailer: git-send-email 2.17.1 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1641800788946100019 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" device_register() calls device_initialize(), according to doc of device_initialize: Use put_device() to give up your reference instead of freeing * @dev directly once you have called this function. To prevent potential memleak, use put_device() instead call kfree directly. Signed-off-by: Miaoqian Lin --- drivers/hwtracing/coresight/coresight-syscfg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-syscfg.c b/drivers/hwtra= cing/coresight/coresight-syscfg.c index 43054568430f..007fa1c761a7 100644 --- a/drivers/hwtracing/coresight/coresight-syscfg.c +++ b/drivers/hwtracing/coresight/coresight-syscfg.c @@ -764,7 +764,7 @@ struct device *cscfg_device(void) /* Must have a release function or the kernel will complain on module unlo= ad */ static void cscfg_dev_release(struct device *dev) { - kfree(cscfg_mgr); + put_device(dev); cscfg_mgr =3D NULL; } =20 --=20 2.17.1