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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 109EEC43458 for ; Sun, 28 Jun 2026 22:01:40 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id F39046B00A3; Sun, 28 Jun 2026 18:01:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EE9366B00A4; Sun, 28 Jun 2026 18:01:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DD80A6B00A5; Sun, 28 Jun 2026 18:01:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id B4C0E6B00A3 for ; Sun, 28 Jun 2026 18:01:29 -0400 (EDT) Received: from smtpin09.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 2D6DEC2139 for ; Sun, 28 Jun 2026 22:01:29 +0000 (UTC) X-FDA: 84930693498.09.96DC424 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf12.hostedemail.com (Postfix) with ESMTP id 8F2FF4000F for ; Sun, 28 Jun 2026 22:01:27 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=k8fNx9yh; spf=pass (imf12.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1782684087; b=dpNIt2n1t12iMVuzllYiK5LHyBbChnvERfOiRtq8bBciGDtTGHpaDP8zfTEISxryr0K68n KT6L4y1AXfH+0VRxTtdbrMsyaYgvB21XBafBMoPe3tNsApu6vI8Rvk1CGgwM+ymXuoI9dz p5YinGqSHnbIoKVXps8Wx4a3kqGqEVU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1782684087; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=OLnT+m7jG25ig3bUBCku5CL8OxagQ/I+mp73IyUAGbg=; b=jpAwo6cMOFb6HzSgBhG7WxPBBJw2/u7UiaNknMwjHclriLpQJSQJZ0XxrfsXWIpxP+CDiG l79H+tGsZhw7Q+esjyop+3IuVmUa/S6F5yxna5xJOIOBZ5hdJ1fXKsZyfbSEqYqHASgVgY +39gkfpu+zJlEndi3cfO5gu/hrQTe7I= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=k8fNx9yh; spf=pass (imf12.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id DEF7341A8F; Sun, 28 Jun 2026 22:01:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74F791F00ACA; Sun, 28 Jun 2026 22:01:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782684086; bh=OLnT+m7jG25ig3bUBCku5CL8OxagQ/I+mp73IyUAGbg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=k8fNx9yh4m8RKU4k+e7B4NxvXXng6Q4+c/r0GzRqXQOlDmd2tVJKsG/wnkV1tnYrX Tj4EQ2QqE2MX8/iTZcKoaMwq7xVT+YEejajrWHdbqGchHdOoAOW1XXQxtY9x9cRydY jGYtB/CmiCgkstBQUiV0o19rEacJPUqrZdEBk792caHhu+GlrYSNxkBmmDZfdlgXKq 7YFOhaMToUe07EZOXnyqlThz7fToCed3wSW0cvqxqJm7/5JUkFtwVlZEDaTePz0rir SNitKVgXeJixCodp2JlRDEvpkAeEbdl1EDLO1LEKfwQhQhcIBznf6IxdQlOr673+Kw JnobUstpcbTqg== From: SJ Park To: Andrew Morton Cc: SJ Park , "# 6 . 2 . x" , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 04/11] mm/damon/sysfs-schemes: kobject_del() scheme region dirs Date: Sun, 28 Jun 2026 15:01:13 -0700 Message-ID: <20260628220121.97360-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260628220121.97360-1-sj@kernel.org> References: <20260628220121.97360-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: bhstkehofkag3ubh1r1id7bautwx5xsj X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 8F2FF4000F X-HE-Tag: 1782684087-480826 X-HE-Meta: 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 ftZgjSv6 ox4kaAviJyJzfGbRNvuB/7d4lh5GqH9YS1J7p4+ApF0JaLos7K+Ya1Dltj3pBepqZNMIGft8xIwLPjL3j9BaW8fzd87QHLJQrmXag7EaNGg3SnRHAyPOirmtTieySc0eEhxdNSzBbNgMaWhzJS+xIaCjggSECufXoyBNkyLY8wN4Jq1tlJpi8iGYIfkum7A0N8BL+apMVpctBEwzx0teTAUpm+abESZ8WUdUooiZsoooTWiKrOSqywRQV5CTWR/lwV9oUgg5RbrQYDvBfhtgrmHAhgQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On CONFIG_DEBUG_KOBJECT_RELEASE enabled kernel, lack of kobject_del() could cause directories creation failures due to the name conflicts. Fix those issues for scheme region directories by adding kobject_del() calls. This issue was discovered [1] by Sashiko, though its analysis was partially incorrect. [1] https://lore.kernel.org/20260517205828.6204-1-sj@kernel.org Fixes: 9277d0367ba1 ("mm/damon/sysfs-schemes: implement scheme region directory") Cc: # 6.2.x Signed-off-by: SJ Park --- mm/damon/sysfs-schemes.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index db496d2e493a4..9eb28fe77b5b0 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -332,6 +332,7 @@ static void damon_sysfs_scheme_regions_rm_dirs( list_for_each_entry_safe(r, next, ®ions->regions_list, list) { damos_sysfs_region_rm_dirs(r); list_del(&r->list); + kobject_del(&r->kobj); kobject_put(&r->kobj); regions->nr_regions--; } -- 2.47.3