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 2EBB83FC5A8; Thu, 18 Jun 2026 15:15:32 +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=1781795736; cv=none; b=ZGvz+3j5fjLcqGZ6lK2FHWo7RSHINT7Z0x9U0XC1H4u/Se68Dcn8VHbcqb8N0SqfDrHeXE29cmm8gqI4FT+QOqgmKvdHHZSMETVioH75Exwvvr72Jb1Wn4Y88uy7S58bHePzfj59DN5pR+ko3fg3eTOw+XEsnHJ4eVUu4yiu1wY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781795736; c=relaxed/simple; bh=a7LFJkRoCnBEG+IV6eG6YWf+u+LzueVya0LdGjnZf+o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=B+npSv0Zl5Uvhqr6+FyoWP3yLwwfiSwlEYwBnVlVbqfGZ4L4OoyLFyqj6vEb8KYCsuSc8A/seAAsfGmsfErEgndvKdvzI3zu3DSTr9tCu8KZd/tcna9+qnHa2oMw1iNQ4APYbKrJnvU5amXxMk9S+5NgZg6kEheZBptVNRMQJ5E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HK9ZrErr; 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="HK9ZrErr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E30B11F00A3D; Thu, 18 Jun 2026 15:15:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781795732; bh=AYOzMyZwHARxR0NZjcHLGHg4Al6n3ZFtJVQObKKPsUw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=HK9ZrErrT/G95PukbMmY9I40KAE9YhFy3SmSqjosNPeVV2aV0AkD03Jgs7TOMMfZq n/tbanT6cTPQsFXcukot33O/Oj4S8PCSNWnsO3Q4DiqKUjySk6MMkWkD4IPxuOqnpD i1zAMudAtaqZvqEywGXUnC7lC3dr3rzv2PaoC2U17ulAqHJzGkAXEVzb3D3UKLgcJP FAOf4f30h4xKXQfLH5Xnud+AjFDIk87Gc/7CZZWMpcQmAgQWLMGxsJKXpiUgzZbYMn k9uUcaymjMkUWdt9cbqeKAhJeQQcfEBi9cdDNZG5Vdvt9/34wKztKESNfzq+B1verL UUZ8B8/n3awbQ== From: SeongJae Park To: Cc: SeongJae Park , "# 5 . 18 . x" , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.2 03/11] mm/damon/sysfs-schemes: kobject_del() scheme dirs Date: Thu, 18 Jun 2026 08:15:07 -0700 Message-ID: <20260618151517.5366-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260618151517.5366-1-sj@kernel.org> References: <20260618151517.5366-1-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 directories by adding kobject_del() calls. Fixes: 7e84b1f8212a ("mm/damon/sysfs: support DAMON-based Operation Schemes") Cc: # 5.18.x Signed-off-by: SeongJae Park --- mm/damon/sysfs-schemes.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 0134111c3c1ff..13f5fae01800b 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -2683,6 +2683,7 @@ void damon_sysfs_schemes_rm_dirs(struct damon_sysfs_schemes *schemes) for (i = 0; i < schemes->nr; i++) { damon_sysfs_scheme_rm_dirs(schemes_arr[i]); + kobject_del(&schemes_arr[i]->kobj); kobject_put(&schemes_arr[i]->kobj); } schemes->nr = 0; @@ -2724,13 +2725,15 @@ static int damon_sysfs_schemes_add_dirs(struct damon_sysfs_schemes *schemes, goto out; err = damon_sysfs_scheme_add_dirs(scheme); if (err) - goto out; + goto del_out; schemes_arr[i] = scheme; schemes->nr++; } return 0; +del_out: + kobject_del(&scheme->kobj); out: damon_sysfs_schemes_rm_dirs(schemes); kobject_put(&scheme->kobj); -- 2.47.3