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[80.230.37.66]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4957b816ef8sm15548295e9.1.2026.07.23.16.52.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jul 2026 16:52:14 -0700 (PDT) Date: Thu, 23 Jul 2026 19:52:11 -0400 From: "Michael S. Tsirkin" To: Greg Kroah-Hartman Cc: "David Hildenbrand (Arm)" , Carlos Bilbao , Hari Mishal , Jason Wang , Xuan Zhuo , Eugenio =?iso-8859-1?Q?P=E9rez?= , virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, elena.reshetova@intel.com, huster@cs.uni-goettingen.de, mhollick@seemoo.de, jiska.classen@hpi.de Subject: Re: [PATCH v2 1/4] virtio-mem: validate device-reported block size Message-ID: <20260723194822-mutt-send-email-mst@kernel.org> References: <20260717061901-mutt-send-email-mst@kernel.org> <2026071724-asleep-pedigree-ea54@gregkh> <20260717065219-mutt-send-email-mst@kernel.org> <2026071759-thermal-synopsis-7568@gregkh> <20260717085838-mutt-send-email-mst@kernel.org> <1fe328d1-edf9-4e72-a145-be74ede20e60@gmail.com> <2026071803-passage-dares-8240@gregkh> <9569e577-aa82-4642-b9d9-fd496fc12849@kernel.org> <2026072036-outburst-rebel-c71b@gregkh> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <2026072036-outburst-rebel-c71b@gregkh> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: rjy8rxL3v0WGGXpW3d20d9t-HU4f5hadUqIUUFx6q4U_1784850736 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Jul 20, 2026 at 10:28:03AM +0200, Greg Kroah-Hartman wrote: > Seriously, I'm trying to figure out what you all care about here and > what exactly the threat model you want this driver to work in, and I'm > getting conflicting answers. And yet it's documented in the kernel tree. The threat model for confidential includes everything that can lead to information disclosure but excludes DoS attacks. It's probably confusing because it's different from USB, where you really do not want a usb device to crash kernel. -- MST