kernel: mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0

Incorrect mappings in vmappagesrangenoflush in the Linux kernel, may lead to memory corruption...

UBUNTU-CVE-2024-45022

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: fix page mapping if vmareaallocpages with high order fallback to order 0 The vmappagesrangenoflush assumes its argument pages contains pages with the same page shift. However, since commit e9c3cda4d86e "mm, vmalloc: f...