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 475D9C43334 for ; Mon, 4 Jul 2022 13:13:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233672AbiGDNNR (ORCPT ); Mon, 4 Jul 2022 09:13:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233381AbiGDNNQ (ORCPT ); Mon, 4 Jul 2022 09:13:16 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11B192181 for ; Mon, 4 Jul 2022 06:13:15 -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 CF6C8B80EEB for ; Mon, 4 Jul 2022 13:13:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F67EC341C7; Mon, 4 Jul 2022 13:13:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1656940392; bh=vsLu9Ub4gp1oJOb2ALgJ6LJEFjoQA3Kdn9Z7wRHbu+4=; h=Subject:To:Cc:From:Date:From; b=F207ltXnMDxr5dyOcS124fs6PCjMh0hOAkOKrnTDSzXNqfvNI0TrQIKJZfgrSGgIP RgRBiksvMNkVLJk+P0d57keyW6n2d3YKg83qXApYxwCBxrsrEmvcD8/ErlUtUGFRsa MlpBwRKTz1Cd4B+FBe5ShrUtB4hVcem0fmm45uyE= Subject: FAILED: patch "[PATCH] PM / devfreq: exynos-ppmu: Fix refcount leak in" failed to apply to 4.19-stable tree To: linmq006@gmail.com, cw00.choi@samsung.com Cc: From: Date: Mon, 04 Jul 2022 15:13:09 +0200 Message-ID: <1656940389159154@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f44b799603a9b5d2e375b0b2d54dd0b791eddfc2 Mon Sep 17 00:00:00 2001 From: Miaoqian Lin Date: Thu, 26 May 2022 12:28:56 +0400 Subject: [PATCH] PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events of_get_child_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. This function only calls of_node_put() in normal path, missing it in error paths. Add missing of_node_put() to avoid refcount leak. Fixes: f262f28c1470 ("PM / devfreq: event: Add devfreq_event class") Signed-off-by: Miaoqian Lin Signed-off-by: Chanwoo Choi diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c index 9b849d781116..a443e7c42daf 100644 --- a/drivers/devfreq/event/exynos-ppmu.c +++ b/drivers/devfreq/event/exynos-ppmu.c @@ -519,15 +519,19 @@ static int of_get_devfreq_events(struct device_node *np, count = of_get_child_count(events_np); desc = devm_kcalloc(dev, count, sizeof(*desc), GFP_KERNEL); - if (!desc) + if (!desc) { + of_node_put(events_np); return -ENOMEM; + } info->num_events = count; of_id = of_match_device(exynos_ppmu_id_match, dev); if (of_id) info->ppmu_type = (enum exynos_ppmu_type)of_id->data; - else + else { + of_node_put(events_np); return -EINVAL; + } j = 0; for_each_child_of_node(events_np, node) {