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 5BC123FD14F; Thu, 18 Jun 2026 15:15:42 +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=1781795743; cv=none; b=BbIcny20j0EvAED2Za4i+uyVXfeHdpI/YzHH8sudqKFZcHgyWMypnt3J+j5bWh0Eay6E4LSg5NTmk7/9GM8xkWEXG5t6HhKGsAcZadcT9pQN2Umkob4jLlj8KUW0nTKHrdNO+kAXmBzRMOM5D8A9vaN/gU7q6NA6V7udRoMo6VE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781795743; c=relaxed/simple; bh=8Uw1k/kSqhVccvCXvRp0tC02aR3xguABsyRzXPyQr5c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hinRi9iBi1TX9rwQs6EI6hBi8/VfkeoafhJrUYsmSElY6qKZEqKx2EgcAzhR4a+tUhDV0cFS/r8fCx17VTV/qp1ZUScC76uN3Fyuxg6pd0Y4qjfpZ5y/z5vubNO26xRZy72qyjk2gP4cASO/rdRP1zUxHiaZp6rd/HOCVttew2w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AmQvilKQ; 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="AmQvilKQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2704D1F000E9; Thu, 18 Jun 2026 15:15:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781795742; bh=8lJ+DfqLbL+e3xmXDpTayP9ovqvMIBlFf/wTcMrXgNU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AmQvilKQKiAQTwPw+BytnN/wnaNJm0hH9+u/3nuAGxdINTbZ5O6sIJ+YT0BYbuMh/ JL7sfuiNKOa4v3nsupCan6rkkod6Be3N7qjhpDYVs39NGdZOjo82YwVBViGJP5Nkw1 104ONUQZRA9AGCGOo83uYwbE+lB3woEpEfJjegb5p7kFWuaY25vdSsp/8lekzdXLiF dSm5zo2iwOc8KslQErVMka+imOKOs0ujRGFJedfB5ofG6pmhMD9dRSDH4VOabLNKto gSAstARw/s0IMHVJc03jVYLI9aFVl5UMHDcta86Xx4dcdeHW5Owsl6D5OLUC263TGV 4djzNQ8RKILcQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.2 11/11] mm/damon/sysfs-schemes: kobject_del() region for populate_region error Date: Thu, 18 Jun 2026 08:15:15 -0700 Message-ID: <20260618151517.5366-12-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 the issue for tried region directories in the error handling path of damon_sysfs_populate_region_dir() by adding a kobject_del() call. Fixes: b574a82d10de ("mm/damon/sysfs-schemes: implement tried_regions//probes/") Signed-off-by: SeongJae Park --- mm/damon/sysfs-schemes.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 0d4e9b053e381..9d8fab32b80f7 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -3134,12 +3134,14 @@ void damos_sysfs_populate_region_dir(struct damon_sysfs_schemes *sysfs_schemes, sysfs_regions->nr_regions)) goto out; if (damos_sysfs_region_add_dirs(region, ctx, r)) - goto out; + goto del_out; list_add_tail(®ion->list, &sysfs_regions->regions_list); sysfs_regions->nr_regions++; return; +del_out: + kobject_del(®ion->kobj); out: kobject_put(®ion->kobj); } -- 2.47.3