CVE-2026-23050 pNFS: Fix a deadlock when returning a delegation during open()

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix a deadlock when returning a delegation during open Ben Coddington reports seeing a hang in the following stack trace: 0 ffffd0b50e1774e0 schedule at ffffffff9ca05415 1 ffffd0b50e177548 schedule at ffffffff9ca05717 2...