From patchwork Tue Apr 26 08:21:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 566502 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 A2690C4321E for ; Tue, 26 Apr 2022 09:07:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346692AbiDZJIz (ORCPT ); Tue, 26 Apr 2022 05:08:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41346 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347931AbiDZJGX (ORCPT ); Tue, 26 Apr 2022 05:06:23 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35451B9F07; Tue, 26 Apr 2022 01:47:33 -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 dfw.source.kernel.org (Postfix) with ESMTPS id C4DC860C42; Tue, 26 Apr 2022 08:47:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89F26C385A0; Tue, 26 Apr 2022 08:47:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1650962852; bh=4sPhDbCQx1zPEz4C3yDJVaZMcs36wzOetBzsjQaMW1w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XInRp8yAzZ2E74xNgHbGlaX3nj8zY6aqL7nhw+HJmBTFlBjF32miLELNWOJuzw/Fe VI46djLsfP1u4LJRX+sCDdNNWQn6Ez2GKOiAZ/v0TxAgVUnk+hM+LsC3coGJvHe19a XCOYguCQgn5VD67Ab8oQE8/9/YeS7Qy+//Lt9GoM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Stefano Stabellini , Stefano Stabellini , Sasha Levin Subject: [PATCH 5.17 111/146] arm/xen: Fix some refcount leaks Date: Tue, 26 Apr 2022 10:21:46 +0200 Message-Id: <20220426081753.175577347@linuxfoundation.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220426081750.051179617@linuxfoundation.org> References: <20220426081750.051179617@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miaoqian Lin [ Upstream commit 533bec143a4c32f7b2014a159d0f5376226e5b4d ] The of_find_compatible_node() function returns a node pointer with refcount incremented, We should use of_node_put() on it when done Add the missing of_node_put() to release the refcount. Fixes: 9b08aaa3199a ("ARM: XEN: Move xen_early_init() before efi_init()") Fixes: b2371587fe0c ("arm/xen: Read extended regions from DT and init Xen resource") Signed-off-by: Miaoqian Lin Reviewed-by: Stefano Stabellini Signed-off-by: Stefano Stabellini Signed-off-by: Sasha Levin --- arch/arm/xen/enlighten.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index ec5b082f3de6..07eb69f9e7df 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -337,12 +337,15 @@ int __init arch_xen_unpopulated_init(struct resource **res) if (!nr_reg) { pr_err("No extended regions are found\n"); + of_node_put(np); return -EINVAL; } regs = kcalloc(nr_reg, sizeof(*regs), GFP_KERNEL); - if (!regs) + if (!regs) { + of_node_put(np); return -ENOMEM; + } /* * Create resource from extended regions provided by the hypervisor to be @@ -403,8 +406,8 @@ int __init arch_xen_unpopulated_init(struct resource **res) *res = &xen_resource; err: + of_node_put(np); kfree(regs); - return rc; } #endif @@ -424,8 +427,10 @@ static void __init xen_dt_guest_init(void) if (of_address_to_resource(xen_node, GRANT_TABLE_INDEX, &res)) { pr_err("Xen grant table region is not found\n"); + of_node_put(xen_node); return; } + of_node_put(xen_node); xen_grant_frames = res.start; }