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In virtio_balloon_get_config() we initialize a struct virtio_balloon_config which we then copy to guest memory. However, the local variable is not zero initialized. This works OK at the moment because we initialize all the fields in it; however an upcoming kernel header change will add some new fields. If we don't zero out the whole struct then we will start leaking a small amount of the contents of QEMU's stack to the guest as soon as we update linux-headers/ to a set of headers that includes the new fields. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20190118183603.24757-1-peter.maydell@linaro.org |
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| .. | ||
| Makefile.objs | ||
| trace-events | ||
| vhost-backend.c | ||
| vhost-scsi-pci.c | ||
| vhost-stub.c | ||
| vhost-user-blk-pci.c | ||
| vhost-user-scsi-pci.c | ||
| vhost-user.c | ||
| vhost-vsock-pci.c | ||
| vhost-vsock.c | ||
| vhost.c | ||
| virtio-9p-pci.c | ||
| virtio-balloon-pci.c | ||
| virtio-balloon.c | ||
| virtio-blk-pci.c | ||
| virtio-bus.c | ||
| virtio-crypto-pci.c | ||
| virtio-crypto.c | ||
| virtio-input-host-pci.c | ||
| virtio-input-pci.c | ||
| virtio-mmio.c | ||
| virtio-net-pci.c | ||
| virtio-pci.c | ||
| virtio-pci.h | ||
| virtio-rng-pci.c | ||
| virtio-rng.c | ||
| virtio-scsi-pci.c | ||
| virtio-serial-pci.c | ||
| virtio.c | ||