On Fri, Jun 02, 2023 at 05:16:45AM -0700, Yi Liu wrote: > This avoids endless vfio_device refcount increasement by userspace, > which would keep blocking the vfio_unregister_group_dev(). > > Tested-by: Yanting Jiang <yanting.jiang@xxxxxxxxx> > Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx> > Tested-by: Terrence Xu <terrence.xu@xxxxxxxxx> > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> > --- > drivers/vfio/vfio_main.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> It looks OK, at least I couldn't find a reason why the group list would need to continue to be valid while we are waiting for the registration lock to release. Jason
