From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D2813B9D8D; Sun, 28 Jun 2026 22:01:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782684088; cv=none; b=jx5ijCGTlbp1Y37lqnlMOvNlER/j5CoFhefwxED/lWv4Y7cXpWq/mstpA1S7HeHF6WnGRDnPlGh/BRQNQILqGxVEOq1LqDTUoYWGhekRAPdlQD1VH6WCTrx4lrIAeMSOzz3ensWSwahpFixlwJML5LTizPfZv5Bt1UUezw2Oiyw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782684088; c=relaxed/simple; bh=ZnXqNwQn4NOhICKXiLGzWbtrTA7bM+VcKALZyUJC9K4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rew8w0+nxLr1v0fvzS5IGW6bWFlhDCgJs/dCADJo0fC6iZ6DglHDW56j1TVePqcKit2fn5DKJyxJei9/om0wgCl8bzQLQlzwmbSALv3nYZWi/7rNEgxE+J0Px9bRoyZ0CjAHt5QGWAL0p3HYTckamXSNFO8T+PIbBuFvePGP1As= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k8fNx9yh; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="k8fNx9yh" 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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