From patchwork Sat Jul 16 07:31:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liang He X-Patchwork-Id: 1657086 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=126.com header.i=@126.com header.a=rsa-sha256 header.s=s110527 header.b=aPAbq0EF; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LlKg62fQgz9ryY for ; Sat, 16 Jul 2022 17:32:02 +1000 (AEST) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4LlKg54t6Zz3c81 for ; Sat, 16 Jul 2022 17:32:01 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=126.com header.i=@126.com header.a=rsa-sha256 header.s=s110527 header.b=aPAbq0EF; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=126.com (client-ip=123.126.96.5; helo=mail-m965.mail.126.com; envelope-from=windhl@126.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=126.com header.i=@126.com header.a=rsa-sha256 header.s=s110527 header.b=aPAbq0EF; dkim-atps=neutral Received: from mail-m965.mail.126.com (mail-m965.mail.126.com [123.126.96.5]) by lists.ozlabs.org (Postfix) with ESMTP id 4LlKfn6RpZz3bvX for ; Sat, 16 Jul 2022 17:31:38 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=69YC/ JjhEmsgy/fH/6Jtn8dKaXpRVuS2ZUNEjzafsqM=; b=aPAbq0EFHpfVyMaivT5vY 4FG5Oi6weZFhJj3LD7ojPwnNl2QN8DowTIGav6QN9tr85nYxX/rVf72mEPumvnqo yvL2pbYVD1lFZhcM4Est98/wFXc102gDdJGKlZMDA3jXsWdA2GkUccM9o4ZYdW7A O8mcPzqkznIeKDjlUje1gk= Received: from localhost.localdomain (unknown [124.16.139.61]) by smtp10 (Coremail) with SMTP id NuRpCgD3XYJAadJiMVSMGg--.22053S2; Sat, 16 Jul 2022 15:31:13 +0800 (CST) From: Liang He To: benh@kernel.crashing.org, mpe@ellerman.id.au, paulus@samba.org, linuxppc-dev@lists.ozlabs.org, windhl@126.com Subject: [PATCH] powerpc/powermac/pfunc_base: Fix refcount leak bug in macio_gpio_init_one() Date: Sat, 16 Jul 2022 15:31:11 +0800 Message-Id: <20220716073111.539739-1-windhl@126.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: NuRpCgD3XYJAadJiMVSMGg--.22053S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7JF4UZF4rAw15uryUCrWxJFb_yoWDXFc_Ja yxGa9rCr4kGr4qvFnFyFy5Grn2k3s3ArWUGF4jqan2y3W5X398GwsrArW3W3W7urWayFZ8 GFsYkFZxAa4SvjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRKFApDUUUUU== X-Originating-IP: [124.16.139.61] X-CM-SenderInfo: hzlqvxbo6rjloofrz/1tbi7QRAF1pEAaLrFQAAs9 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" We should call of_node_put() for the reference 'gparent' escaped out of the for_each_child_of_node() as it has increased the refcount. Fixes: 5b9ca526917b ("[PATCH] 3/5 powerpc: Add platform functions interpreter") Signed-off-by: Liang He --- arch/powerpc/platforms/powermac/pfunc_base.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/powermac/pfunc_base.c b/arch/powerpc/platforms/powermac/pfunc_base.c index 9c2947a3edd5..085e0ad20eba 100644 --- a/arch/powerpc/platforms/powermac/pfunc_base.c +++ b/arch/powerpc/platforms/powermac/pfunc_base.c @@ -136,6 +136,8 @@ static void __init macio_gpio_init_one(struct macio_chip *macio) for_each_child_of_node(gparent, gp) pmf_do_functions(gp, NULL, 0, PMF_FLAGS_ON_INIT, NULL); + of_node_put(gparent); + /* Note: We do not at this point implement the "at sleep" or "at wake" * functions. I yet to find any for GPIOs anyway */