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 949C9C32772 for ; Tue, 23 Aug 2022 08:37:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344854AbiHWIhd (ORCPT ); Tue, 23 Aug 2022 04:37:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344853AbiHWIfd (ORCPT ); Tue, 23 Aug 2022 04:35:33 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2324D75FC2; Tue, 23 Aug 2022 01:16:45 -0700 (PDT) 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 CF1FBB81C29; Tue, 23 Aug 2022 08:16:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31D67C433D6; Tue, 23 Aug 2022 08:16:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1661242578; bh=nKTuBtM4erHTsf5Z3wnlxZdKoymi6bvTtcHKXHd7hkU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nvNl2VA8ZfxuAwTtlEUYVHRROWXpl+aEwRW9IekVi8Nh8WIpqOyVbzNn3uk2yPmuj 9id3AT3LTjN8wIYPYaAVjEMEtyl4AOiWA2IqaeWiOeadRY5IPSHxSMmqFM84QOdzDf ztfVhIHuHtBWSk1N4KqCHKVUqasc6n4+XpfamsBg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Timur Tabi , Liang He , Sasha Levin Subject: [PATCH 4.9 094/101] tty: serial: Fix refcount leak bug in ucc_uart.c Date: Tue, 23 Aug 2022 10:04:07 +0200 Message-Id: <20220823080038.148330039@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220823080034.579196046@linuxfoundation.org> References: <20220823080034.579196046@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: linux-kernel@vger.kernel.org From: Liang He [ Upstream commit d24d7bb2cd947676f9b71fb944d045e09b8b282f ] In soc_info(), of_find_node_by_type() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore. Acked-by: Timur Tabi Signed-off-by: Liang He Link: https://lore.kernel.org/r/20220618060850.4058525-1-windhl@126.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/ucc_uart.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c index 481eb2989a1e..ed1658b61e54 100644 --- a/drivers/tty/serial/ucc_uart.c +++ b/drivers/tty/serial/ucc_uart.c @@ -1143,6 +1143,8 @@ static unsigned int soc_info(unsigned int *rev_h, unsigned int *rev_l) /* No compatible property, so try the name. */ soc_string = np->name; + of_node_put(np); + /* Extract the SOC number from the "PowerPC," string */ if ((sscanf(soc_string, "PowerPC,%u", &soc) != 1) || !soc) return 0; -- 2.35.1