I posted these patches to the kernel team ML. I've tested the above reproducer script and it does indeed fix the issue, and in addition I've ran the unionmount-testsuite 'sudo ./run --ov' on the new kernel and no regressions were noticed (all test passing).
I posted these patches to the kernel team ML. I've tested the above reproducer script and it does indeed fix the issue, and in addition I've ran the unionmount- testsuite 'sudo ./run --ov' on the new kernel and no regressions were noticed (all test passing).