Re: [Qemu-devel] [PATCH 1/2] ehci: apply limit to itd/sidt descriptors

2016-04-18 Thread P J P
+-- On Mon, 18 Apr 2016, Gerd Hoffmann wrote --+ | Commit "156a2e4 ehci: make idt processing more robust" tries to avoid a | DoS by the guest (create a circular itd queue and let qemu ehci | emulation run in circles forever). Unfortunaly this has two problems: | First it misses the case of sitds,

[Qemu-devel] [PATCH 1/2] ehci: apply limit to itd/sidt descriptors

2016-04-18 Thread Gerd Hoffmann
Commit "156a2e4 ehci: make idt processing more robust" tries to avoid a DoS by the guest (create a circular itd queue and let qemu ehci emulation run in circles forever). Unfortunaly this has two problems: First it misses the case of sitds, and second it reportly breaks freebsd. So lets go for a