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 5133F19EED3; Wed, 17 Jun 2026 14:48:37 +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=1781707720; cv=none; b=ugfiagu5pS14pt2FcZUpJ4XYtFVuVpq3Ru2yA1Add7aO8/WhgTg4DxTNKy7/EMEBUlUUNSWCug1jthaeUyBUOO42g91JI5skQAS1YKFixR9mp1DuTizMnOwSINHw7qq6JjMqitL/3h4mwUI5jyfR8Rug0te2F52+m/9z+gAxPzo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781707720; c=relaxed/simple; bh=P/YRtZaOARgw54Tx+SEjBI9kxicLKAlJR6FWI+U/JuA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LHFBuSZjqG3dGtBjxuW7Erp5srOAOyLpYu7hWM0dp3HV6TQud9HG2OGeL5owvHLvlklzP9WGN4Dvn7tJtPCtuVenbfNucllkOQTPs1/Xsa0f2JYs3IuXBlIwkkHvdEHKi04no25rMjl5Lzw70xAI/nF5euZFZ4eRSsbfJ4jwvjg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=newO6kd6; 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="newO6kd6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33FAD1F00A3D; Wed, 17 Jun 2026 14:48:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781707717; bh=YtuACU05uWFEz+Ei+IYVVZbkflRFGPIDankdmmStN+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=newO6kd61rxUta9sxfOW/31k4cJ7NC+z7HUfEnbvZE8UgaW1nrLrktwr3chXpFcsm dzdlN4eHn8jhYQsWOP3Jj1CJAb1CBco3QnpH6DKglf6vNQMypJLg2NZdQn8z6P5AZR wSlSEKkGLc9DUo+Lex+3ZloUY0cdJoiNB4ZQl8f3LVUr2uvup9ADPAcQudhzE0FOzZ Rn5+9uZEZum7JLeV3YQLrz5e4wNCBfx43sQJ8ompkyOIrLsSWA0d7CRwXl0WwLss89 C/uDRIA2ueWQcgS9OumJon6hYbA1MFUJbW0mCyY4EgitmXOCLG2C8q00Sxpnbjx1Y7 DRj0FwuCfpctQ== From: SeongJae Park To: Cc: SeongJae Park , "# 6 . 2 . x" , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.1 04/11] mm/damon/sysfs-schemes: kobject_del() scheme region dirs Date: Wed, 17 Jun 2026 07:47:58 -0700 Message-ID: <20260617144807.91441-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260617144807.91441-1-sj@kernel.org> References: <20260617144807.91441-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev 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: SeongJae 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 debf2a3a0d8fc..604b77a47a463 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -334,6 +334,7 @@ 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