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 2DC58C7EE32 for ; Fri, 3 Mar 2023 21:51:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232869AbjCCVvg (ORCPT ); Fri, 3 Mar 2023 16:51:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233287AbjCCVux (ORCPT ); Fri, 3 Mar 2023 16:50:53 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD3CF6C1BF; Fri, 3 Mar 2023 13:47:02 -0800 (PST) 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 6489A61956; Fri, 3 Mar 2023 21:47:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B584CC433A4; Fri, 3 Mar 2023 21:46:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677880020; bh=jPjRG8J2Lw/T6MTjpltlKQ/ub2il2H98DaZwP94Z7O0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZFSgEod2DDq7YoZsu4uo3yoAAZOim9Kn4mU9gEq5gJ84cVV/oQ29vE1mXXHmfhXd3 M800dJgnBQSJjlh3nkljY1ycjoNtghx0rWO+uHNDZQjauAxep7PyiCJ1413e6UHD5l sJebsqPFwO2VPKv8H7tK2uYUrTS4vc7BiFQfsppbSrhiWDFn+8qJoJQIk9MNqzC3Xg +V/2viAY0c046xaErnLvALNJ52Fae/bJ00THqrgFLmp6XJSg9FJeKykF80rNTdACax A0m6pTrhVngxjp6et00eLG+hz4k0EI5q7hUELD/ZzcGrpRd74eBoPoY2AXYDmr0/yU OHHWU1pj9fSCw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH AUTOSEL 5.15 42/50] drivers: base: dd: fix memory leak with using debugfs_lookup() Date: Fri, 3 Mar 2023 16:45:23 -0500 Message-Id: <20230303214531.1450154-42-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230303214531.1450154-1-sashal@kernel.org> References: <20230303214531.1450154-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Greg Kroah-Hartman [ Upstream commit 36c893d3a759ae7c91ee7d4871ebfc7504f08c40 ] When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once. Cc: "Rafael J. Wysocki" Link: https://lore.kernel.org/r/20230202141621.2296458-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/base/dd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 060348125635b..9cbf086fe5524 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -352,7 +352,7 @@ late_initcall(deferred_probe_initcall); static void __exit deferred_probe_exit(void) { - debugfs_remove_recursive(debugfs_lookup("devices_deferred", NULL)); + debugfs_lookup_and_remove("devices_deferred", NULL); } __exitcall(deferred_probe_exit); -- 2.39.2