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 71054C4332F for ; Wed, 23 Nov 2022 09:07:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237090AbiKWJHc (ORCPT ); Wed, 23 Nov 2022 04:07:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237207AbiKWJHM (ORCPT ); Wed, 23 Nov 2022 04:07:12 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E649102E6F for ; Wed, 23 Nov 2022 01:06:51 -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 B6604B81EF2 for ; Wed, 23 Nov 2022 09:06:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F20BAC433D6; Wed, 23 Nov 2022 09:06:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669194400; bh=2+lgQz+aViiWigOWhhtGoXwEEgqQVI0YSc5X9fCSB2E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e11JTs9novv+X4sXoSlV36wkWR+RENeefUdfaWTjfhtFfvNY7pX/W+ICs3jdyGlyJ m9peojyxCS9wnXA5hJ4qq+Zx9egqrEazpjCcPPy4w0LJkU6TeGP23LjymS4cvnY4rG hyIr5ExSTmH44JUllJbTAQ7QCqhN+7YVoYuBAfD4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Jakub Kicinski , Sasha Levin Subject: [PATCH 4.19 066/114] mISDN: fix possible memory leak in mISDN_dsp_element_register() Date: Wed, 23 Nov 2022 09:50:53 +0100 Message-Id: <20221123084554.533739686@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221123084551.864610302@linuxfoundation.org> References: <20221123084551.864610302@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 98a2ac1ca8fd6eca6867726fe238d06e75eb1acd ] Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, use put_device() to give up the reference, so that the name can be freed in kobject_cleanup() when the refcount is 0. The 'entry' is going to be freed in mISDN_dsp_dev_release(), so the kfree() is removed. list_del() is called in mISDN_dsp_dev_release(), so it need be initialized. Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array") Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20221109132832.3270119-1-yangyingliang@huawei.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/isdn/mISDN/dsp_pipeline.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c index e72b4e73cd61..796cae691560 100644 --- a/drivers/isdn/mISDN/dsp_pipeline.c +++ b/drivers/isdn/mISDN/dsp_pipeline.c @@ -97,6 +97,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem) if (!entry) return -ENOMEM; + INIT_LIST_HEAD(&entry->list); entry->elem = elem; entry->dev.class = elements_class; @@ -131,7 +132,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem) device_unregister(&entry->dev); return ret; err1: - kfree(entry); + put_device(&entry->dev); return ret; } EXPORT_SYMBOL(mISDN_dsp_element_register); -- 2.35.1