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 039CB42EECE; Tue, 16 Jun 2026 15:09:02 +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=1781622543; cv=none; b=SkzYNZmQzr9N8h0INtHEiNJbyL7kuhUZuu6+sxsvbfrKkpYd9E/NpM+yHSUJA3j+9l5tedWRV14/NFuqBv7yby5GRXL0iEM2wPP5pSnsQq0XXM1JC8FgIG/6i7W1KUem1OQNBfsEpyfx6DOlk2b9MsfgZISc2DAwNpeGwDzOA80= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781622543; c=relaxed/simple; bh=5NNrZD3y08MLHccCEPac0nOSr3gSQb4NVGbK076rvGU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kRjTO+kTxQ96PxstTWgPJBS7d6rwkGjC7TBuaMFhnY0hoM53yqQ2nOaEil6cicItK2TIjfnrmCIPvksiWpSr5px6xrUUJRPwqAaNieXuK38SXLXpmJa2DMm6QxAWC7fcn4+/XgNvs17FY+dNvNHjXPyDQehomHLQRzHNaNrTKTg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OPkfFt4K; 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="OPkfFt4K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1DAD51F00A3D; Tue, 16 Jun 2026 15:09:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781622541; bh=iKJW527X2a4DyTxX/3xqnHNqlZ5qhWrmVwqPolgxgiQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OPkfFt4KgmzgN4DhuMQCVJn5o7UhWA9RfTeQqzO99cG3zORFg54DXQsFptf6d3gAd JX/tXvvmsSI42Yk5UiWjM2bfzN7kneCYXt2s29WQhXv+sQLvZHlO2YQ1yqUifQZKJ1 rAcgOwT42JNSdacCUKE/9zmMLIvTUHjDLw3MdP8msrnSZObqfETfhWfvWXRDi8W3Ff MMFJIhbDs8X55QdPbfZBhVcbOcHowNYHBVIQ6SAMa0pTXcaSDFX3MQ5kAqdCCsm6FP D/WO+G3QBG/imlxXTMP5FqVqO8CespQrCVJg6ryEOUfwSHDOsgY4Xiap6cOPLUN1IV KJR9311dEvrGA== 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 4/9] mm/damon/sysfs-schemes: kobject_del() scheme region dirs Date: Tue, 16 Jun 2026 08:08:38 -0700 Message-ID: <20260616150844.88305-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260616150844.88305-1-sj@kernel.org> References: <20260616150844.88305-1-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 37cf6edb54f17..bf08e6e1f1635 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