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 B4B1D1C29 for ; Wed, 23 Nov 2022 09:31:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74192C433D6; Wed, 23 Nov 2022 09:31:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669195916; bh=XpwRcAo2jfwOpMnSgLEF1oXMai8/FPRyv23ruHXnGqg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZIf4JLfOBewM18GGTaR0qbqWDMJeJ3Q7smgMOt1c6M8FTO15Ry4r/d1sPpU/NaxzL JbS71omyArvQ9zKHAAH1jpeHMq3e+4spg+1Qlf/R1xTOD12MpoNmYY9v/kdo3J6o4a 5+rLD1TJJI6EF6zbJcZY+CMP2NU44a4PD3SVrOnY= 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 5.15 061/181] siox: fix possible memory leak in siox_device_add() Date: Wed, 23 Nov 2022 09:50:24 +0100 Message-Id: <20221123084605.006524154@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221123084602.707860461@linuxfoundation.org> References: <20221123084602.707860461@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 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, 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