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 36A921C26 for ; Wed, 23 Nov 2022 09:06:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB516C433D7; Wed, 23 Nov 2022 09:06:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669194379; bh=LYB/PlXxnYtq0oMbwb+X3LffkwD40L1PzhSxTFziOLc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ilSPG/fkP14wxbu28h0ANiULPR59dUq4liSvPiet6ydGh2kqncKtyiJvXVJa8GtQB SlbwOzyCoQmBDC0OF0PuBUEhrvYenmxQ4vRiuyDhuUM0qA9tcI3BN4p1P6lhmLm/4N id70CiCgOC0LaS+z06JbNQxlj2ROaJVkPcj9haXg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Sasha Levin Subject: [PATCH 4.19 061/114] siox: fix possible memory leak in siox_device_add() Date: Wed, 23 Nov 2022 09:50:48 +0100 Message-Id: <20221123084554.316378586@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 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 6e63153db50059fb78b8a8447b132664887d24e3 ] 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-König Link: https://lore.kernel.org/r/20221104021334.618189-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- 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 f8c08fb9891d..e0ffef6e9386 100644 --- a/drivers/siox/siox-core.c +++ b/drivers/siox/siox-core.c @@ -835,6 +835,8 @@ static struct siox_device *siox_device_add(struct siox_master *smaster, err_device_register: /* don't care to make the buffer smaller again */ + put_device(&sdevice->dev); + sdevice = NULL; err_buf_alloc: siox_master_unlock(smaster); -- 2.35.1