On Thu, Apr 20, 2023 at 03:51:15PM -0300, Jason Gunthorpe wrote: > This is on github: https://github.com/jgunthorpe/linux/commits/iommufd_hwpt > > v6: > - Go back to the v4 locking arragnment with now both the attach/detach > igroup->locks inside the functions, Kevin says he needs this for a > followup series. This still fixes the syzkaller bug > - Fix two more error unwind locking bugs where > iommufd_object_abort_and_destroy(hwpt) would deadlock or be mislocked. > Make sure fail_nth will catch these mistakes > - Add a patch allowing objects to have different abort than destroy > function, it allows hwpt abort to require the caller to continue > to hold the lock and enforces this with lockdep. Tested this series + cdev v9 + replace series + nesting (SMMUv3): https://github.com/nicolinc/iommufd/commits/wip/iommufd_nesting-04202023-nic I only have one device per group, so can't cover the igroup part. Yet, the sanity covers hwpt replacements of a kernel-manage hwpt from/to an ioas (auto hwpt) and a user-managed hwpt. Thanks Nic
