kernel: arm64/mm: fix incorrect file_map_count for non-leaf pmd/pud

In the Linux kernel, the following vulnerability has been resolved: arm64/mm: fix incorrect filemapcount for non-leaf pmd/pud The page table check trigger BUGON unexpectedly when collapse hugepage: ------------ cut here ------------ kernel BUG at mm/pagetablecheck.c:82! Internal error: Oops - BUG...

PT-2023-9438 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.1.0-rc3+ Description: The issue is related to the arm64/mm component of the Linux kernel, where incorrect handling of memory allocation errors can lead to a denial of service. On arm64, the pmd leaf function...