CVE-2024-48876 stackdepot: fix stack_depot_save_flags() in NMI context

In the Linux kernel, the following vulnerability has been resolved: stackdepot: fix stackdepotsaveflags in NMI context Per documentation, stackdepotsaveflags was meant to be usable from NMI context if STACKDEPOTFLAGCANALLOC is unset. However, it still would try to take the poollock in an attempt ...