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 99C61175A6B; Mon, 17 Aug 2026 15:02:49 +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=1786978970; cv=none; b=DIR8OigCdisn8GdtdGXYv5ynb4wFDZexHv3LZLKS+6spzn4j8lqbDMp5ExmF3vLTimLiFGcDuwtHas/z/NgUsUP6YDeKthDV/hLspGhtvUv1lrJl0othtUqfYa+0ExsxasxKojFQ2I738FI9QM3TNPbWh/3jvA6Zqj/s8x9BtT8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786978970; c=relaxed/simple; bh=6hsNe3qXoG7V6dQ24ATp91Ul8q7vlIGM5fy4QCVrRBo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sUkSayz2hFF2+j6n/v/quflNigZHB1vkxqYUu9e1P4mPpgHcLZMdjZ3dryEq43x9OaQtjlXeAxmxLIr9kYCPy4cILZcbUri5x0PpcG/PgVrJk53ZJb7UHFlLLfAjVFfoqixSkRgk7gd5VESrMcLqHuuRlVn4Z1iZDkDA8lPCwmI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OizjWuR2; 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="OizjWuR2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F344F1F000E9; Mon, 17 Aug 2026 15:02:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786978969; bh=IZxnPfEIWIcvwQkQCOBMKjDHIugoa1Q6RSKcLuddyoc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OizjWuR2zOi9a4RDZEq5mCLscIm7mbygDjo/+z8ynxVWgwT1FIkHK7mt+PfodeTVv BL4aAVZOleMRz3cg0Z6RD2bz6qvUEzho2Vh/7B4a96CVOafEGIv3crVIY1t80tf8+0 CG3Xs7YB8+1UduoO6UZvn+uLVFl5PxZTrbaVdXnE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pengpeng Hou , Miquel Raynal , Sasha Levin Subject: [PATCH 6.1 026/609] mtd: mtdswap: remove debugfs stats file on teardown Date: Mon, 17 Aug 2026 15:25:22 +0200 Message-ID: <20260817132544.107820824@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132543.039278408@linuxfoundation.org> References: <20260817132543.039278408@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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pengpeng Hou [ Upstream commit 66fb31358108d10245b9e4ef0eef3e7d9747055e ] mtdswap_add_debugfs() creates an mtdswap_stats debugfs file under the per-MTD debugfs directory, but mtdswap_remove_dev() never removes it before freeing the mtdswap_dev. Store the returned dentry and remove it during device teardown before the driver-private state is freed. Fixes: a32159024620 ("mtd: Add mtdswap block driver") Signed-off-by: Pengpeng Hou Signed-off-by: Miquel Raynal Signed-off-by: Sasha Levin --- drivers/mtd/mtdswap.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 680366616da240..4d695875ea1b23 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -125,6 +125,7 @@ struct mtdswap_dev { char *page_buf; char *oob_buf; + struct dentry *debugfs_stats; }; struct mtdswap_oobdata { @@ -1262,7 +1263,8 @@ static int mtdswap_add_debugfs(struct mtdswap_dev *d) if (IS_ERR_OR_NULL(root)) return -1; - debugfs_create_file("mtdswap_stats", S_IRUSR, root, d, &mtdswap_fops); + d->debugfs_stats = debugfs_create_file("mtdswap_stats", 0400, root, + d, &mtdswap_fops); return 0; } @@ -1463,6 +1465,7 @@ static void mtdswap_remove_dev(struct mtd_blktrans_dev *dev) { struct mtdswap_dev *d = MTDSWAP_MBD_TO_MTDSWAP(dev); + debugfs_remove(d->debugfs_stats); del_mtd_blktrans_dev(dev); mtdswap_cleanup(d); kfree(d); -- 2.53.0