CVE-2026-99093 mm: don't schedule deferred kernel page table freeing while booting

In the Linux kernel, the following vulnerability has been resolved: mm: don't schedule deferred kernel page table freeing while booting Booting with a boot-time function tracer and a filter, for example ftrace=function ftracefilter=pudfreepmdpage panics on 7.3-rc4 as soon as the tracer starts:...