linux-stable/Documentation/filesystems
Linus Torvalds 582c161cf3 hardening updates for v6.5-rc1
- Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)
 
 - Convert strreplace() to return string start (Andy Shevchenko)
 
 - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)
 
 - Add missing function prototypes seen with W=1 (Arnd Bergmann)
 
 - Fix strscpy() kerndoc typo (Arne Welzel)
 
 - Replace strlcpy() with strscpy() across many subsystems which were
   either Acked by respective maintainers or were trivial changes that
   went ignored for multiple weeks (Azeem Shaikh)
 
 - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)
 
 - Add KUnit tests for strcat()-family
 
 - Enable KUnit tests of FORTIFY wrappers under UML
 
 - Add more complete FORTIFY protections for strlcat()
 
 - Add missed disabling of FORTIFY for all arch purgatories.
 
 - Enable -fstrict-flex-arrays=3 globally
 
 - Tightening UBSAN_BOUNDS when using GCC
 
 - Improve checkpatch to check for strcpy, strncpy, and fake flex arrays
 
 - Improve use of const variables in FORTIFY
 
 - Add requested struct_size_t() helper for types not pointers
 
 - Add __counted_by macro for annotating flexible array size members
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Merge tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "There are three areas of note:

  A bunch of strlcpy()->strscpy() conversions ended up living in my tree
  since they were either Acked by maintainers for me to carry, or got
  ignored for multiple weeks (and were trivial changes).

  The compiler option '-fstrict-flex-arrays=3' has been enabled
  globally, and has been in -next for the entire devel cycle. This
  changes compiler diagnostics (though mainly just -Warray-bounds which
  is disabled) and potential UBSAN_BOUNDS and FORTIFY _warning_
  coverage. In other words, there are no new restrictions, just
  potentially new warnings. Any new FORTIFY warnings we've seen have
  been fixed (usually in their respective subsystem trees). For more
  details, see commit df8fc4e934.

  The under-development compiler attribute __counted_by has been added
  so that we can start annotating flexible array members with their
  associated structure member that tracks the count of flexible array
  elements at run-time. It is possible (likely?) that the exact syntax
  of the attribute will change before it is finalized, but GCC and Clang
  are working together to sort it out. Any changes can be made to the
  macro while we continue to add annotations.

  As an example of that last case, I have a treewide commit waiting with
  such annotations found via Coccinelle:

    https://git.kernel.org/linus/adc5b3cb48a049563dc673f348eab7b6beba8a9b

  Also see commit dd06e72e68 for more details.

  Summary:

   - Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)

   - Convert strreplace() to return string start (Andy Shevchenko)

   - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)

   - Add missing function prototypes seen with W=1 (Arnd Bergmann)

   - Fix strscpy() kerndoc typo (Arne Welzel)

   - Replace strlcpy() with strscpy() across many subsystems which were
     either Acked by respective maintainers or were trivial changes that
     went ignored for multiple weeks (Azeem Shaikh)

   - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)

   - Add KUnit tests for strcat()-family

   - Enable KUnit tests of FORTIFY wrappers under UML

   - Add more complete FORTIFY protections for strlcat()

   - Add missed disabling of FORTIFY for all arch purgatories.

   - Enable -fstrict-flex-arrays=3 globally

   - Tightening UBSAN_BOUNDS when using GCC

   - Improve checkpatch to check for strcpy, strncpy, and fake flex
     arrays

   - Improve use of const variables in FORTIFY

   - Add requested struct_size_t() helper for types not pointers

   - Add __counted_by macro for annotating flexible array size members"

* tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (54 commits)
  netfilter: ipset: Replace strlcpy with strscpy
  uml: Replace strlcpy with strscpy
  um: Use HOST_DIR for mrproper
  kallsyms: Replace all non-returning strlcpy with strscpy
  sh: Replace all non-returning strlcpy with strscpy
  of/flattree: Replace all non-returning strlcpy with strscpy
  sparc64: Replace all non-returning strlcpy with strscpy
  Hexagon: Replace all non-returning strlcpy with strscpy
  kobject: Use return value of strreplace()
  lib/string_helpers: Change returned value of the strreplace()
  jbd2: Avoid printing outside the boundary of the buffer
  checkpatch: Check for 0-length and 1-element arrays
  riscv/purgatory: Do not use fortified string functions
  s390/purgatory: Do not use fortified string functions
  x86/purgatory: Do not use fortified string functions
  acpi: Replace struct acpi_table_slit 1-element array with flex-array
  clocksource: Replace all non-returning strlcpy with strscpy
  string: use __builtin_memcpy() in strlcpy/strlcat
  staging: most: Replace all non-returning strlcpy with strscpy
  drm/i2c: tda998x: Replace all non-returning strlcpy with strscpy
  ...
2023-06-27 21:24:18 -07:00
..
caching Remove duplicate words inside documentation 2022-09-27 13:21:43 -06:00
ext4 docs: ext4: modify the group desc size to 64 2023-03-07 20:24:05 -05:00
nfs Documentation: Fix sysfs path for the NFSv4 client identifier 2023-02-15 11:01:03 -05:00
smb smb3: move Documentation/filesystems/cifs to Documentation/filesystems/smb 2023-05-24 16:29:21 -05:00
spufs Documentation: spufs: correct a duplicate word typo 2022-09-27 13:21:44 -06:00
9p.rst fs/9p: Rework cache modes and add new options to Documentation 2023-04-09 21:41:21 +00:00
adfs.rst
affs.rst
afs.rst
api-summary.rst
autofs-mount-control.rst autofs: use flexible array in ioctl structure 2023-05-30 16:42:00 -07:00
autofs.rst autofs: use flexible array in ioctl structure 2023-05-30 16:42:00 -07:00
automount-support.rst
befs.rst
bfs.rst
btrfs.rst Documentation: update btrfs list of features and link to readthedocs.io 2022-06-21 14:47:19 +02:00
ceph.rst ceph: remove Sage's git tree from documentation 2022-10-04 19:18:08 +02:00
coda.rst
configfs.rst configfs: remove mentions of committable items 2022-12-02 11:11:27 +01:00
cramfs.rst
dax.rst
debugfs.rst debugfs: small Documentation cleaning 2022-11-09 13:58:55 -07:00
devpts.rst
directory-locking.rst fs: Lock moved directories 2023-06-02 15:00:18 +02:00
dlmfs.rst
dnotify.rst
ecryptfs.rst
efivarfs.rst
erofs.rst erofs: set block size to the on-disk block size 2023-04-17 01:15:45 +08:00
ext2.rst ext2: remove nobh support 2022-08-02 12:34:04 -04:00
ext3.rst
f2fs.rst docs: f2fs: Correct instruction to disable checkpoint 2023-04-12 20:00:36 -07:00
fiemap.rst
files.rst
fscrypt.rst fscrypt: support decrypting data from large folios 2023-01-28 15:10:12 -08:00
fsverity.rst fsverity: improve documentation for builtin signature support 2023-06-20 22:47:55 -07:00
fuse-io.rst
fuse.rst fuse: Add module param for CAP_SYS_ADMIN access bypassing allow_other 2022-07-21 16:06:19 +02:00
gfs2-glocks.rst
gfs2-uevents.rst
gfs2.rst
hfs.rst
hfsplus.rst
hpfs.rst
idmappings.rst Documentation: update idmappings.rst 2023-03-14 14:16:57 +01:00
index.rst smb3: move Documentation/filesystems/cifs to Documentation/filesystems/smb 2023-05-24 16:29:21 -05:00
inotify.rst
isofs.rst
journalling.rst
locking.rst mm: hold the RCU read lock over calls to ->map_pages 2023-04-05 19:43:00 -07:00
locks.rst
mount_api.rst fs_context: drop the unused lsm_flags member 2023-03-16 14:38:28 +01:00
netfs_library.rst netfs: do not unlock and put the folio twice 2022-07-14 10:10:12 +02:00
nilfs2.rst
ntfs.rst
ntfs3.rst fs/ntfs3: Remove noacsrules 2023-03-27 16:59:17 +04:00
ocfs2-online-filecheck.rst
ocfs2.rst
omfs.rst
orangefs.rst
overlayfs.rst Revert "ovl: turn of SB_POSIXACL with idmapped layers temporarily" 2022-07-15 22:10:51 +02:00
path-lookup.rst
path-lookup.txt
porting.rst fs: rename current get acl method 2022-10-20 10:13:27 +02:00
proc.rst Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
qnx6.rst Documentation: filesystems: correct possessive "its" 2022-09-27 13:21:44 -06:00
quota.rst
ramfs-rootfs-initramfs.rst Documentation/filesystems: ramfs-rootfs-initramfs: use :Author: 2023-05-16 12:55:35 -06:00
relay.rst
romfs.rst
seq_file.rst
sharedsubtree.rst Documentation/filesystems: sharedsubtree: add section headings 2023-05-16 12:50:05 -06:00
splice.rst
squashfs.rst
sysfs.rst driver core: bus: mark the struct bus_type for sysfs callbacks as constant 2023-03-23 13:20:40 +01:00
sysv-fs.rst
tmpfs.rst shmem: add support to ignore swap 2023-03-28 16:20:15 -07:00
ubifs-authentication.rst
ubifs.rst Documentation: ubifs: Fix compression idiom 2022-10-10 13:01:10 -06:00
udf.rst
vfat.rst
vfs.rst docs: filesystems: vfs: actualize struct super_operations description 2023-03-14 12:12:12 -06:00
virtiofs.rst
xfs-delayed-logging-design.rst Documentation: filesystems: correct possessive "its" 2022-09-27 13:21:44 -06:00
xfs-online-fsck-design.rst xfs: document future directions of online fsck 2023-04-11 18:59:52 -07:00
xfs-self-describing-metadata.rst xfs: document the filesystem metadata checking strategy 2023-04-11 18:59:47 -07:00
zonefs.rst