From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=213.95.11.211 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794409928; b=MWPJKmPyp8wx+wGW7VKUKHdaMXkk6tsOcpRoNXGlWeRhpmrfU+LuN/+Fbw0rSmN2giCF zhUx5VkcGmilppk9o666JBYv8eJva8qD0It9DQ8F97ft/fHSVLj4GS3diqBvcPeFTi/d/ gUl8aap5dMBwOif5ts3ECTXN3w/CwhsOLxKjyPkTCAgC33wYX+50RkAHwrwhahJbSvLsU XTFQSGheD13JTP19bHaOro5xVetjkD17JcXXuiMOcbz9mUFkFPgUCIXaEDissL/3z/IxR 1GEh9utTXqsBSZ2CjGwkiWDIX/d4lsYs/anBHXm44f8cKvEt2XglCkJBMUPieT2ddKw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794409928; h=DMARC-Filter:Received:Date:From:To:Cc:Subject:Message-ID:References: MIME-Version:Content-Type:Content-Disposition:In-Reply-To:User-Agent; bh=dehBO8Yxo1qlGsyLOmGqdqT0CExk2sS3MX1Vk4oa/6A=; b=DbhAT6FgGRL3UmCOe8v7NLD7ilAdyvziIOjYNx3OXqQf0y1zEOUqvTCitYOphUofvTdU fvjQBy7iA0nJJ5s1k8s9TYNxV3KWWBMuQtNFCSsPpSLwCKfzV5xk3lojvnD2P69rUW3u4 4hO5Z9dYMOA7KMuaujF2k20ovhu/LVsDvgCcwZP9ICypkUAldvF0vk5uX3FB3/R4I3lgO 10xMB7+vfNUYAwZbSJqZr9DO3uN3Kaj5XIl/m+FpaCq9TSJBiSl/Lai778mLWbBqsW6Ga sYkATyl8o1KkffkKQNybi0mnoB7kjkOn8R3CoebYoM3ax26NHBWREbsvq5y00q9+o7A== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=lst.de; spf=pass smtp.mailfrom=lst.de; arc=none smtp.remote-ip=213.95.11.211 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B90E5606A326; Wed, 11 Nov 2026 15:12:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org B90E5606A326 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lst.de Received: by verein.lst.de (Postfix, from userid 2407) id 52A7668D16; Wed, 11 Nov 2026 16:12:03 +0100 (CET) Date: Wed, 11 Nov 2026 16:12:02 +0100 From: Christoph Hellwig To: Christian Brauner Cc: linux-fsdevel@vger.kernel.org, Jann Horn , Chris Mason , Josef Bacik , Christoph Hellwig , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, Alexander Viro , Jan Kara , linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, driver-core@lists.linux.dev, linux-mm@kvack.org, bpf@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, fuse-devel@lists.linux.dev, linux-efi@vger.kernel.org, xen-devel@lists.xenproject.org, ocfs2-devel@lists.linux.dev, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-usb@vger.kernel.org, Amir Goldstein , linux-erofs@lists.ozlabs.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH RFC 38/41] fuse: refuse files on pseudo filesystems as passthrough backing files Message-ID: <20261111151202.GA11391@lst.de> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> <20261110-work-loop-pseudo-v1-38-4c998976c6c7@kernel.org> X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261110-work-loop-pseudo-v1-38-4c998976c6c7@kernel.org> User-Agent: Mutt/1.5.17 (2007-11-01) I've seen setups where people use fuse to mediate access to sysfs sysfs in odd ways. No idea if that's still around, but if so, this patch will break it.