From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794302967; b=dvuZ/41UTopO+6qzCgPclDQ7aBM+mcG8aIuLNHdVvguvi3pw7+xVG39lFx31HJOhsun8 4NWOHNXgiHBVnnt3ZVriSptSmVfgmTdhwcG7MqMrwie6NZvaVcv9sEHSjdqJwURRSDQPS A3EjQF73FvIOOlQ2H4VgP3n1NNEKq0gnlTO0HMnvT8XaHxYCx14iY7zCJ12hdpeNXUkmO qwwqrL8HGr4jAzkn+ID+juZA8G8ZG8rQG7cKZNu9Rri5HqR2DyzxvkEhQMbiWSsQA+KYZ w79upe2CI7GgNCCxnQEY8kYqoPQJ6n84SmZJkPaoKaBqYQb6EN8zupvJmA89VEq3tPA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794302967; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=xdGJzTH17z1Uu+qFbPIHuE9upPtBL58iWq/be8hE6aY=; b=cCHXQZPLPMtOU3KRSKMzr44jcLwqAqClFEe9ZOU68uZqiogXqXtNir3nv9Pzw7PDjM+h 7c/fsNvPTXHaYwI1FfMH2nmmESmFAHrUSqeqcFww3gjgbv4JcIqq6Aq942RHS2C0xKS1h aCB3KgcD4lRmZ5uEsRuu6QEXnbrHxBeXiA5SB2Rg2bX2Pw7uSqlPUWPeo7s7Snx6fnBGr N0zAZW0K/GnlSjUJtaFzW+pcbsr8+08sDA7PQPq0eWXI7XDzUJUq6vGKvNZtgO0B6q2m3 xNrcuuhqDFF2rP1n4v6RVhIClrFq9dRB08VT61Lw9LqZdktMyaHFUMBTX1/0e9iPVpA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cySmMegu; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 14DCD606C651; Tue, 10 Nov 2026 09:29:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cySmMegu Received: by smtp.kernel.org (Postfix) with ESMTPSA id 107FF1F0089F; Tue, 10 Nov 2026 09:29:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794302966; bh=xdGJzTH17z1Uu+qFbPIHuE9upPtBL58iWq/be8hE6aY=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=cySmMeguNScs2Y+ruwh2ITTyZX5b0lcXsR0g3XJoi6gBAse9iPjNosCXI0tv4sQo1 xGDsT/VnRHJbEoRZVPfSrc7g4RLzOjjiVjrqXJuWPQXhV/iiXgztcH4enfMO70Nv6i BJ0H2L34lStIcFWj/uuwGqYD38yyJ5xRmAauig1cLq/Nd+AKite1BjWg4C+mHjzpCy im6XmntjQXqGaLSqFyg9XFlGvk8I/lJB6s4IfoQT/WY0CI0YpJ1DFMibBLTEFB+CXS ONqK+MloZL1XvsgrGlGwtPt/3/MEhI7+qxrwyF+BM7E4IFiHwahDGwVteU18fZvLel d8jQyjUOpL7cQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RFC 40/41] erofs: refuse files on pseudo filesystems as backing files Reply-To: sashiko-reviews@lists.linux.dev To: "Christian Brauner" Cc: linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-s390@vger.kernel.org, linux-usb@vger.kernel.org, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" , "Mark Fasheh" , "Joel Becker" , "Joseph Qi" In-Reply-To: <20261110-work-loop-pseudo-v1-40-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> <20261110-work-loop-pseudo-v1-40-4c998976c6c7@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 10 Nov 2026 09:29:25 +0000 X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > File-backed mounts take any regular file as the image and the same goes > for the extra devices of such a mount. erofs reads them with the > credentials of the mounter so this doesn't hand out anything the mounter > couldn't read anyway. But files on pseudo filesystems aren't images. > Refuse them just like loop does. >=20 > Signed-off-by: Christian Brauner (Amutable) Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261110-work-loop-= pseudo-v1-0-4c998976c6c7@kernel.org?part=3D40