On Tue, Oct 15, 2024 at 09:15:01AM +0800, Zhangfei Gao wrote: > > > iommufd_device_bind > > > iommufd_device_attach > > > iommufd_vdevice_alloc_ioctl > > > > > > iommufd_device_detach > > > iommufd_device_unbind // refcount check fail > > > iommufd_vdevice_destroy ref-- > > > > Things should be symmetric. As you suspected, vdevice should be > > destroyed before iommufd_device_detach. > > I am trying based on your for_iommufd_viommu_p2-v3 branch, do you have > this issue? > In checking whether close fd before unbind? Oops, my bad. I will provide a fix. Nicolin
