On Thu, Aug 14, 2025 at 05:37:02PM +0200, Paolo Abeni wrote: > The linux kernel implementation for the virtio_net driver recently > gained support for virtio features above the 64th bit. > Hi, > It relies on the hypervisor to clear the features data for unknown / > unsupported features range. > > The current pci-modern implementation, in such scenario, leaves the > data memory untouched, which causes the guest kernel assuming "random" > features are supported (and possibly leaks host memory contents). > > Explicitly clear the features data for unsupported range. > This patch definitely solves for me the virtio networking issue reported at: https://lore.kernel.org/virtualization/c25f924f-a66b-47cc-819d-5ed241a4bac6@xxxxxxxxxx/T/#t Tested on an arm64 Host (v6.14.8) with a v6.17-rc1 Guest. Thanks ! Tested-by: Cristian Marussi <cristian.marussi@xxxxxxx> Thanks, Cristian
