Merge tag 'mm-hotfixes-stable-2025-08-12-20-50' of git://git.kernel.org/pub/scm/linux...

Merge tag 'mm-hotfixes-stable-2025-08-12-20-50' of git://git./linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "12 hotfixes. 5 are cc:stable and the remainder address post-6.16
  issues or aren't considered necessary for -stable kernels.

  10 of these fixes are for MM"

* tag 'mm-hotfixes-stable-2025-08-12-20-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  proc: proc_maps_open allow proc_mem_open to return NULL
  mm/mremap: avoid expensive folio lookup on mremap folio pte batch
  userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry
  mm: pass page directly instead of using folio_page
  selftests/proc: fix string literal warning in proc-maps-race.c
  fs/proc/task_mmu: hold PTL in pagemap_hugetlb_range and gather_hugetlb_stats
  mm/smaps: fix race between smaps_hugetlb_range and migration
  mm: fix the race between collapse and PT_RECLAIM under per-vma lock
  mm/kmemleak: avoid soft lockup in __kmemleak_do_cleanup()
  MAINTAINERS: add Masami as a reviewer of hung task detector
  mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock
  kasan/test: fix protection against compiler elision