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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 748E3C3DA7A for ; Wed, 28 Dec 2022 15:15:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233067AbiL1PPU (ORCPT ); Wed, 28 Dec 2022 10:15:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233119AbiL1PPI (ORCPT ); Wed, 28 Dec 2022 10:15:08 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DC1A13E94 for ; Wed, 28 Dec 2022 07:15:07 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 56664B81647 for ; Wed, 28 Dec 2022 15:15:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8509C433F0; Wed, 28 Dec 2022 15:15:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672240505; bh=J7FwzpysjjsFN+SjVMjARPC9GfDv8COCLZ5rdinsQKo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QuK2JEDk8Iv41+wMmUoCG8tp+aWvgRtHmXfRlN5fUbWaoJpMouOM5XOtOQzqrUjIf yB58Mk/MfW3QcVrnfdijm1E3G/2d8GwfoIQmsGLcXCkU6SbzQfDvYnlUtVEeYC+cMk el/PuKCis2tdC2DbKntbkr7mhuUnJrSR30otBgM0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 6.1 0133/1146] MIPS: vpe-mt: fix possible memory leak while module exiting Date: Wed, 28 Dec 2022 15:27:52 +0100 Message-Id: <20221228144333.763933304@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144330.180012208@linuxfoundation.org> References: <20221228144330.180012208@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yang Yingliang [ Upstream commit 5822e8cc84ee37338ab0bdc3124f6eec04dc232d ] Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, it need be freed when module exiting, call put_device() to give up reference, so that it can be freed in kobject_cleanup() when the refcount hit to 0. The vpe_device is static, so remove kfree() from vpe_device_release(). Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array") Signed-off-by: Yang Yingliang Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/kernel/vpe-mt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/vpe-mt.c b/arch/mips/kernel/vpe-mt.c index bad6b0891b2b..84a82b551ec3 100644 --- a/arch/mips/kernel/vpe-mt.c +++ b/arch/mips/kernel/vpe-mt.c @@ -313,7 +313,6 @@ ATTRIBUTE_GROUPS(vpe); static void vpe_device_release(struct device *cd) { - kfree(cd); } static struct class vpe_class = { @@ -497,6 +496,7 @@ int __init vpe_module_init(void) device_del(&vpe_device); out_class: + put_device(&vpe_device); class_unregister(&vpe_class); out_chrdev: @@ -509,7 +509,7 @@ void __exit vpe_module_exit(void) { struct vpe *v, *n; - device_del(&vpe_device); + device_unregister(&vpe_device); class_unregister(&vpe_class); unregister_chrdev(major, VPE_MODULE_NAME); -- 2.35.1