CVE-2024-50223 sched/numa: Fix the potential null pointer dereference in task_numa_work()

In the Linux kernel, the following vulnerability has been resolved: sched/numa: Fix the potential null pointer dereference in tasknumawork When running stress-ng-vm-segv test, we found a null pointer dereference error in tasknumawork. Here is the backtrace: 323676.066985 Unable to handle kernel...