From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11A9F1C08 for ; Wed, 28 Dec 2022 16:35:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C40AC433EF; Wed, 28 Dec 2022 16:35:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672245358; bh=XBd218Rua9/4d/hFlCv/hVe3ik+Wfgsb/Ztt7qJRXy0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o9aH5of4XS4G0EDZdGvLjsjqWoZa5MDkxSxJ+FXRiqln1oi4kk2uoGi0iP8nYcOKi oh/FiHKZirHZGhh1+ts5FGv7JOwdRiu26u3AfilnGFqSAnLUV/rFDXkSazfU7mw73/ BbNieuPwx6VprQC/iuE/FufrIrMCBdBl63NFP93w= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Michael Ellerman , Sasha Levin Subject: [PATCH 6.1 0845/1146] macintosh: fix possible memory leak in macio_add_one_device() Date: Wed, 28 Dec 2022 15:39:44 +0100 Message-Id: <20221228144353.106113312@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 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yang Yingliang [ Upstream commit 5ca86eae55a2f006e6c1edd2029b2cacb6979515 ] Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically. It needs to be freed when of_device_register() fails. Call put_device() to give up the reference that's taken in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hits 0. macio device is freed in macio_release_dev(), so the kfree() can be removed. Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array") Signed-off-by: Yang Yingliang Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20221104032551.1075335-1-yangyingliang@huawei.com Signed-off-by: Sasha Levin --- drivers/macintosh/macio_asic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c index 1ec1e5984563..3bc1f374e657 100644 --- a/drivers/macintosh/macio_asic.c +++ b/drivers/macintosh/macio_asic.c @@ -424,7 +424,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip, if (of_device_register(&dev->ofdev) != 0) { printk(KERN_DEBUG"macio: device registration error for %s!\n", dev_name(&dev->ofdev.dev)); - kfree(dev); + put_device(&dev->ofdev.dev); return NULL; } -- 2.35.1