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 825BA57D20E; Wed, 9 Sep 2026 14:16:08 +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=1788963369; cv=none; b=ZWttzXjpy/sMIR6+1rXmKTG0X45Ps7gpgYCCcvoYzIRiCRZZYTwqp/cO7WjtvfoJevJCgullFv2m9JnpbCtxD4bEnu9fQvLP8ol7YaKuaL8qHCuTDyoMUOYb2owhYYDZbtLew0At9xZM2SpSiEWhOBljgmn3D2y2Bt20l161J0c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788963369; c=relaxed/simple; bh=xgkkzlYKrDi2+lAqCUe5zDirwtX0C8X2vuPwRP6ql5E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ouRRUeEWmqd/+KNh3idDhi8rwrISVlGtEWVLspcxSYbWOGjXCxPx5eC0hQWEPpqRaZcWSA6WJZWNia5+yH1KXSet5KAqLioge8SzfUuhxtWqk/sbltzbuQOqFBym3f9Ji4EGWmdwJgCBt4dYbdbyGLLj+T5tA24Z2bHFIYkaJDI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Rx8il+1Y; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Rx8il+1Y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D95211F00A3A; Wed, 9 Sep 2026 14:16:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788963368; bh=4lO0z0+0FlsQ8D8yQdEdS3qyL1jLe3a2f44yalVFr3c=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Rx8il+1Ya5Qjsi5sBzYFRjp3w4r5+3HcldBscIOMKMFLC/eRys2R/iKz75AUOL+RX 9vZbf9Y0eaqBfkMJ7DwfcCAV3HUuN0aw/tmUC+VNCsjpRodkIQvUBFbab91A2j2tR4 a9GsJuV/JY2z+L6Vd6ulUetyY8D52Y99hSUI5Vzg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, SJ Park , Andrew Morton Subject: [PATCH 6.18 055/583] mm/damon/sysfs-schemes: kobject_del() scheme dirs Date: Wed, 9 Sep 2026 15:35:40 +0200 Message-ID: <20260909134239.896447741@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909134237.773280130@linuxfoundation.org> References: <20260909134237.773280130@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: SJ Park commit 05fb6ac98c49be870c5f9ccdfdf95f0107e564ae upstream. 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. Link: https://lore.kernel.org/20260628220121.97360-4-sj@kernel.org Fixes: 7e84b1f8212a ("mm/damon/sysfs: support DAMON-based Operation Schemes") Signed-off-by: SJ Park Cc: # 5.18.x Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- mm/damon/sysfs-schemes.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -2305,6 +2305,7 @@ void damon_sysfs_schemes_rm_dirs(struct 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; @@ -2346,13 +2347,15 @@ static int damon_sysfs_schemes_add_dirs( 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);