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 2EC693FC5A9; Thu, 18 Jun 2026 15:15:33 +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=1781795734; cv=none; b=ulofHye1h6ELCIRQiaY84rEKsuoB27EFPayMM+l06E5joQVe42FPt6Y4aDuVjAkdI/aih7qgY9rIlyoNex/EmmPS75rH1rtncgPD2dJbL9x9QQqqbELC0u9eBn9LneSLg/MK1jmkelrzIaoEWCxGKTkUUDdGzscEFXxWbwqcq5I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781795734; c=relaxed/simple; bh=ZEnagPMbJ+SZ9NxkHl15NRRU4mAP7XqbFmOd7PdujSw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q69736yMYLRk2B5lqyBoPmiUyjhc8MThagTk7owdJ6bhCOqcPdazpv4UXylI0Z6sMtS485sP1S/4dkDr0z/dV/zDz9krbwGh6Pu0b54/lBJ9bF+7tfogWkGad87zvbvWPoZZ/qZzWU02rRPyy7vQYc/y+5tlF3GgIlYuP8gily0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=o3YCEZTr; 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="o3YCEZTr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 684921F000E9; Thu, 18 Jun 2026 15:15:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781795732; bh=Ot9STQ1g/9bWHz2PjKibHQ71PZQcqWhCbB69SWOFmKg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=o3YCEZTrO+wyO3PqS/j1/Gt2GLsXLY9FxL6xZbWT1uGZLwZjqayIGag//weJb512F RJNNCcmISu+dza9sGmQCswEbLB+3tcbT4/ySZehAtBUwVpeCePuB60lVcXd+0LIjIv I5PwxR5LoA1sjjb1NIT+u2ZnUV8DOSHS+UhkGhmgzivxt5XdRgy7yUt7koLZ2A1Zrp m/huCaE4WBwCYlNePgvJJTBKVPTV36UzLUwDaHgVD6FBxCkQ0tMOg/sMlF/1fXfrQn 7lvWn778TGS8/RyF1rs4COUeOXrdWp7krVcbg6DYx57zNoLNr0sDcRerYOo4s01bB+ khYE9UPlNjLrw== 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 v1.2 04/11] mm/damon/sysfs-schemes: kobject_del() scheme region dirs Date: Thu, 18 Jun 2026 08:15:08 -0700 Message-ID: <20260618151517.5366-5-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 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 13f5fae01800b..36a35ad0983eb 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