[GIT PULL] hotfixes for 6.18-rc6

[Andrew Morton]

Linus, please merge this batch of hotfixes, thanks.


The following changes since commit e9a6fb0bcdd7609be6969112f3fbfcce3b1d4a7c:

  Linux 6.18-rc5 (2025-11-09 15:10:19 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-hotfixes-stable-2025-11-10-19-30

for you to fetch changes up to b05addf6f0596edb1f82ab4059438c7ef2d2686d:

  kho: warn and exit when unpreserved page wasn't preserved (2025-11-09 21:19:47 -0800)

----------------------------------------------------------------
26 hotfixes.  22(!) are cc:stable, 22 are MM.

- a three patch series from Pasha Tatashin which addresses some Kexec
  Handover issues

- a two patch series from Kiryl Shutsemau which fixes handling of large
  folios which are mapped outside i_size

- a two patch series from Quanmin Yan which fixes some DAMON time issues
  on 32-bit machines

Plus the usual shower of singletome.

----------------------------------------------------------------
Aleksei Nikiforov (1):
      mm/kmsan: fix kmsan kmalloc hook when no stack depots are allocated yet

Carlos Llamas (1):
      scripts/decode_stacktrace.sh: fix build ID and PC source parsing

Catalin Marinas (1):
      mm/huge_memory: initialise the tags of the huge zero folio

Chris Li (1):
      MAINTAINERS: add Chris and Kairui as the swap maintainer

Dev Jain (1):
      mm/mremap: honour writable bit in mremap pte batching

Edward Adam Davis (1):
      nilfs2: avoid having an active sc_timer before freeing sci

Hao Ge (1):
      codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext

Isaac J. Manjarres (1):
      mm/mm_init: fix hash table order logging in alloc_large_system_hash()

Kairui Song (1):
      mm/shmem: fix THP allocation and fallback loop

Kiryl Shutsemau (2):
      mm/memory: do not populate page table entries beyond i_size
      mm/truncate: unmap large folio on split failure

Lance Yang (1):
      mm/secretmem: fix use-after-free race in fault handler

Martin Kaiser (1):
      maple_tree: fix tracepoint string pointers

Pasha Tatashin (3):
      kho: warn and fail on metadata or preserved memory in scratch area
      kho: increase metadata bitmap size to PAGE_SIZE
      kho: allocate metadata directly from the buddy allocator

Pedro Demarchi Gomes (1):
      ksm: use range-walk function to jump over holes in scan_get_next_rmap_item

Peter Oberparleiter (1):
      gcov: add support for GCC 15

Pratyush Yadav (3):
      kho: fix out-of-bounds access of vmalloc chunk
      kho: fix unpreservation of higher-order vmalloc preservations
      kho: warn and exit when unpreserved page wasn't preserved

Quanmin Yan (2):
      mm/damon/stat: change last_refresh_jiffies to a global variable
      mm/damon/sysfs: change next_update_jiffies to a global variable

Wei Yang (1):
      fs/proc: fix uaf in proc_readdir_de()

Zi Yan (2):
      mm/huge_memory: do not change split_huge_page*() target order silently
      mm/huge_memory: preserve PG_has_hwpoisoned if a folio is split to >0 order

 MAINTAINERS                      |   4 +-
 arch/arm64/kernel/mte.c          |   3 +-
 arch/arm64/mm/fault.c            |  10 ++++
 fs/nilfs2/segment.c              |   7 ++-
 fs/proc/generic.c                |  12 +++--
 include/linux/gfp.h              |   3 ++
 include/linux/huge_mm.h          |  55 ++++++++-----------
 kernel/Kconfig.kexec             |   9 ++++
 kernel/Makefile                  |   1 +
 kernel/gcov/gcc_4_7.c            |   4 +-
 kernel/kexec_handover.c          |  95 +++++++++++++++++++-------------
 kernel/kexec_handover_debug.c    |  25 +++++++++
 kernel/kexec_handover_internal.h |  20 +++++++
 lib/maple_tree.c                 |  30 ++++++-----
 mm/damon/stat.c                  |   9 ++--
 mm/damon/sysfs.c                 |  10 ++--
 mm/filemap.c                     |  28 +++++++---
 mm/huge_memory.c                 |  35 +++++++-----
 mm/kmsan/core.c                  |   3 --
 mm/kmsan/hooks.c                 |   6 ++-
 mm/kmsan/shadow.c                |   2 +-
 mm/ksm.c                         | 113 +++++++++++++++++++++++++++++++++++----
 mm/memory.c                      |  20 ++++++-
 mm/mm_init.c                     |   2 +-
 mm/mremap.c                      |   2 +-
 mm/secretmem.c                   |   2 +-
 mm/shmem.c                       |   9 ++--
 mm/slub.c                        |   6 ++-
 mm/truncate.c                    |  37 ++++++++++---
 scripts/decode_stacktrace.sh     |  14 ++---
 30 files changed, 424 insertions(+), 152 deletions(-)
 create mode 100644 kernel/kexec_handover_debug.c
 create mode 100644 kernel/kexec_handover_internal.h