virtualbox.org

Running 5.1.22 on Kubuntu 17.04.

I got curious and looked through the kernel log today. Wasn't looking specifically for anything to do with vbox, just what was there.

Ran across the following messages in the kernel log:

5/15/17 2:21 PM vboxdrv loading out-of-tree module taints kernel.
5/15/17 2:21 PM vboxdrv module verification failed: signature and/or required key missing - tainting kernel
5/15/17 2:21 PM vboxdrv Found 8 processor cores
5/15/17 2:21 PM vboxdrv TSC mode is Invariant, tentative frequency 3999979955 Hz
5/15/17 2:21 PM vboxdrv Successfully loaded version 5.1.22 (interface 0x00280000)
5/15/17 2:21 PM VBoxNetFlt Successfully started.
5/15/17 2:21 PM VBoxNetAdp Successfully started.
5/15/17 2:21 PM VBoxPciLinuxInit
5/15/17 2:21 PM vboxpci IOMMU not found (not registered)

vbox has been working very well and I'm not really concerned that anything is wrong, but ..... Those first 2 lines have me wondering if something is wrong??? verification failed signature or required key missing. Was something inadvertently left out of the deb package for 5.1.22 that I downloaded from the virtual box site? Or is this something that in known and known not to be a problem?

Searching for "module verification failed: signature and/or required key missing - tainting kernel" (without "virtualbox") returns several results. In one of them which happens to mention "virtualbox" (http://www.linuxquestions.org/questions ... 175533442/) the reason given is:

That message is nothing to worry about, and has absolutely NOTHING to do with secure boot or UEFI. All that means, is that you're loading a kernel module that hasn't been fully tested/integrated with the kernel you're running. This message was intended to identify conditions which may make it difficult to properly troubleshoot a kernel problem.

Thank You