From nobody Thu Apr 9 09:22:15 2026 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 2BD87C4332F for ; Fri, 4 Nov 2022 02:15:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230427AbiKDCPS (ORCPT ); Thu, 3 Nov 2022 22:15:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230262AbiKDCPP (ORCPT ); Thu, 3 Nov 2022 22:15:15 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5340212C for ; Thu, 3 Nov 2022 19:15:15 -0700 (PDT) Received: from dggpemm500024.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4N3PNC3lB9zmVbw for ; Fri, 4 Nov 2022 10:15:07 +0800 (CST) Received: from dggpemm500007.china.huawei.com (7.185.36.183) by dggpemm500024.china.huawei.com (7.185.36.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Fri, 4 Nov 2022 10:15:13 +0800 Received: from huawei.com (10.175.103.91) by dggpemm500007.china.huawei.com (7.185.36.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Fri, 4 Nov 2022 10:15:13 +0800 From: Yang Yingliang To: CC: , , Subject: [PATCH] siox: fix possible memory leak in siox_device_add() Date: Fri, 4 Nov 2022 10:13:34 +0800 Message-ID: <20221104021334.618189-1-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm500007.china.huawei.com (7.185.36.183) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" If device_register() returns error in siox_device_add(), the name allocated by dev_set_name() need be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(), and sdevice is freed in siox_device_release(), set it to null in error path. Fixes: bbecb07fa0af ("siox: new driver framework for eckelmann SIOX") Signed-off-by: Yang Yingliang Reviewed-by: Uwe Kleine-K=C3=B6nig --- drivers/siox/siox-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/siox/siox-core.c b/drivers/siox/siox-core.c index 7c4f32d76966..561408583b2b 100644 --- a/drivers/siox/siox-core.c +++ b/drivers/siox/siox-core.c @@ -839,6 +839,8 @@ static struct siox_device *siox_device_add(struct siox_= master *smaster, =20 err_device_register: /* don't care to make the buffer smaller again */ + put_device(&sdevice->dev); + sdevice =3D NULL; =20 err_buf_alloc: siox_master_unlock(smaster); --=20 2.25.1