CVE-2025-21816 hrtimers: Force migrate away hrtimers queued after CPUHP_AP_HRTIMERS_DYING

In the Linux kernel, the following vulnerability has been resolved: hrtimers: Force migrate away hrtimers queued after CPUHPAPHRTIMERSDYING hrtimers are migrated away from the dying CPU to any online target at the CPUHPAPHRTIMERSDYING stage in order not to delay bandwidth timers handling tasks...