Hello, On Wed, Jun 16, 2021 at 08:51:57AM -0400, Paul Gortmaker wrote: > A fix would be to not leave the stale reference in fc->root as follows: > > -------------- > dput(fc->root); > + fc->root = NULL; > deactivate_locked_super(sb); > -------------- > > ...but then we are just open-coding a duplicate of fc_drop_locked() so we > simply use that instead. As this is unlikely to be a real-world problem both in probability and circumstances, I'm applying this to cgroup/for-5.14 instead of cgroup/for-5.13-fixes. Thanks. -- tejun