On Wed, Nov 07, 2018 at 04:17:09PM +0000, Robin Murphy wrote: > FWIW it looks like it *has* always been possible to hit this crash by > allocating a domain and freeing it again without attaching any devices, it's > just highly improbable for any sane code to do that explicitly, so the real > latent triggers are failure paths in external callers (which in this case > are themselves only being reached thanks to my bug elsewhere). Okay, given this, it probably makes more sense to change the fixes tag. This is what I just committed: Fixes: d25a2a16f0889 ('iommu: Add driver for Renesas VMSA-compatible IPMMU') Regards, Joerg