Pull hardening updates from Kees Cook:

 - Introduce the param_unknown_fn type and other clean ups (Andy
   Shevchenko)

 - Various __counted_by annotations (Christophe JAILLET, Gustavo A. R.
   Silva, Kees Cook)

 - Add KFENCE test to LKDTM (Stephen Boyd)

 - Various strncpy() refactorings (Justin Stitt)

 - Fix qnx4 to avoid writing into the smaller of two overlapping buffers

 - Various strlcpy() refactorings

* tag 'hardening-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  qnx4: Use get_directory_fname() in qnx4_match()
  qnx4: Extract dir entry filename processing into helper
  atags_proc: Add __counted_by for struct buffer and use struct_size()
  tracing/uprobe: Replace strlcpy() with strscpy()
  params: Fix multi-line comment style
  params: Sort headers
  params: Use size_add() for kmalloc()
  params: Do not go over the limit when getting the string length
  params: Introduce the param_unknown_fn type
  lkdtm: Add kfence read after free crash type
  nvme-fc: replace deprecated strncpy with strscpy
  nvdimm/btt: replace deprecated strncpy with strscpy
  nvme-fabrics: replace deprecated strncpy with strscpy
  drm/modes: replace deprecated strncpy with strscpy_pad
  afs: Add __counted_by for struct afs_acl and use struct_size()
  VMCI: Annotate struct vmci_handle_arr with __counted_by
  i40e: Annotate struct i40e_qvlist_info with __counted_by
  HID: uhid: replace deprecated strncpy with strscpy
  samples: Replace strlcpy() with strscpy()
  SUNRPC: Replace strlcpy() with strscpy()