Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg...

Pull iommufd fixes from Jason Gunthorpe:
 "Two user triggerable problems:

   - Syzkaller found a way to trigger a WARN_ON and leak memory by
     racing destroy with other actions

   - There is still a bug in the "batch carry" stuff that gets invoked
     for complex cases with accesses and unmapping of huge pages. The
     test suite found this (triggers rarely)"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
  iommufd: Set end correctly when doing batch carry
  iommufd: IOMMUFD_DESTROY should not increase the refcount