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Viacheslav Dubeyko 54694417d4 hfsplus: fix volume corruption issue for generic/480 
[ Upstream commit bea4429eb3 ]

The xfstests' test-case generic/480 leaves HFS+ volume
in corrupted state:

sudo ./check generic/480
FSTYP -- hfsplus
PLATFORM -- Linux/x86_64 hfsplus-testing-0001 6.17.0-rc1+ #4 SMP PREEMPT_DYNAMIC Wed Oct 1 15:02:44 PDT 2025
MKFS_OPTIONS -- /dev/loop51
MOUNT_OPTIONS -- /dev/loop51 /mnt/scratch

generic/480 _check_generic_filesystem: filesystem on /dev/loop51 is inconsistent
(see XFSTESTS-2/xfstests-dev/results//generic/480.full for details)

Ran: generic/480
Failures: generic/480
Failed 1 of 1 tests

sudo fsck.hfsplus -d /dev/loop51
** /dev/loop51
Using cacheBlockSize=32K cacheTotalBlock=1024 cacheSize=32768K.
Executing fsck_hfs (version 540.1-Linux).
** Checking non-journaled HFS Plus Volume.
The volume name is untitled
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
CheckHardLinks: found 1 pre-Leopard file inodes.
Incorrect number of file hard links
** Checking catalog hierarchy.
** Checking extended attributes file.
** Checking volume bitmap.
** Checking volume information.
invalid VHB nextCatalogID
Volume header needs minor repair
(2, 0)
Verify Status: VIStat = 0x8000, ABTStat = 0x0000 EBTStat = 0x0000
CBTStat = 0x0000 CatStat = 0x00000002
** Repairing volume.
Incorrect flags for file hard link (id = 19)
(It should be 0x22 instead of 0x2)
Incorrect flags for file inode (id = 18)
(It should be 0x22 instead of 0x2)
first link ID=0 is < 16 for fileinode=18
Error getting first link ID for inode = 18 (result=2)
Invalid first link in hard link chain (id = 18)
(It should be 19 instead of 0)
Indirect node 18 needs link count adjustment
(It should be 1 instead of 2)
** Rechecking volume.
** Checking non-journaled HFS Plus Volume.
The volume name is untitled
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
** Checking catalog hierarchy.
** Checking extended attributes file.
** Checking volume bitmap.
** Checking volume information.
** The volume untitled was repaired successfully.

The generic/480 test executes such steps on final phase:

"Now remove of the links of our file and create
a new file with the same name and in the same
parent directory, and finally fsync this new file."

unlink $SCRATCH_MNT/testdir/bar
touch $SCRATCH_MNT/testdir/bar
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir/bar

"Simulate a power failure and mount the filesystem
to check that replaying the fsync log/journal
succeeds, that is the mount operation does not fail."

_flakey_drop_and_remount

The key issue in HFS+ logic is that hfsplus_link(),
hfsplus_unlink(), hfsplus_rmdir(), hfsplus_symlink(),
and hfsplus_mknod() methods don't call
hfsplus_cat_write_inode() for the case of modified
inode objects. As a result, even if hfsplus_file_fsync()
is trying to flush the dirty Catalog File, but because of
not calling hfsplus_cat_write_inode() not all modified
inodes save the new state into Catalog File's records.
Finally, simulation of power failure results in inconsistent
state of Catalog File and FSCK tool reports about
volume corruption.

This patch adds calling of hfsplus_cat_write_inode()
method for modified inodes in hfsplus_link(),
hfsplus_unlink(), hfsplus_rmdir(), hfsplus_symlink(),
and hfsplus_mknod() methods. Also, it adds debug output
in several methods.

sudo ./check generic/480
FSTYP         -- hfsplus
PLATFORM      -- Linux/x86_64 hfsplus-testing-0001 6.18.0-rc1+ #18 SMP PREEMPT_DYNAMIC Thu Dec  4 12:24:45 PST 2025
MKFS_OPTIONS  -- /dev/loop51
MOUNT_OPTIONS -- /dev/loop51 /mnt/scratch

generic/480 16s ...  16s
Ran: generic/480
Passed all 1 tests

Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>
cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
cc: Yangtao Li <frank.li@vivo.com>
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/20251205000054.3670326-1-slava@dubeyko.com
Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:19:28 -05:00
arch MIPS: Work around LLVM bug when gp is used as global register variable 2026-02-26 14:59:45 -08:00
block block,bfq: fix aux stat accumulation destination 2026-02-11 13:41:47 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec 2026-01-30 10:32:12 +01:00
Documentation ASoC: dt-bindings: asahi-kasei,ak5558: Fix the supply names 2026-02-26 14:59:46 -08:00
drivers rtc: interface: Alarm race handling should not discard preceding error 2026-03-04 07:19:27 -05:00
fs hfsplus: fix volume corruption issue for generic/480 2026-03-04 07:19:28 -05:00
include netfilter: nf_tables: add .abort_skip_removal flag for set types 2026-02-27 16:05:10 -05:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring io_uring/rsrc: clean up buffer cloning arg validation 2026-02-26 14:59:47 -08:00
ipc ipc: don't audit capability check in ipc_permissions() 2026-02-26 14:59:19 -08:00
kernel bpf: Add a map/btf from a fd array more consistently 2026-02-26 14:59:38 -08:00
lib objpool: fix the overestimation of object pooling metadata size 2026-02-26 14:59:36 -08:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm mm/slab: fix false lockdep warning in __kfree_rcu_sheaf() 2026-02-26 14:59:14 -08:00
net netfilter: nf_tables: add .abort_skip_removal flag for set types 2026-02-27 16:05:10 -05:00
rust rust: task: restrict Task::group_leader() to current 2026-02-26 14:59:18 -08:00
samples samples/ftrace: Adjust LoongArch register restore order in direct calls 2026-01-08 10:17:11 +01:00
scripts scripts: generate_rust_analyzer: Add compiler_builtins -> core dep 2026-02-06 16:57:42 +01:00
security apparmor: fix aa_label to return state from compount and component match 2026-02-26 14:59:42 -08:00
sound ALSA: hda/realtek: Add quirk for Samsung Galaxy Book3 Pro 360 (NP965QFG) 2026-02-26 14:59:46 -08:00
tools perf test: Fix test case perftool-testsuite_report for s390 2026-03-04 07:19:27 -05:00
usr gen_init_cpio: Ignore fsync() returning EINVAL on pipes 2025-10-07 09:53:05 -07:00
virt KVM: Don't clobber irqfd routing type when deassigning irqfd 2026-02-11 13:41:44 +01:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap 8 hotfixes. 4 are cc:stable, 7 are against mm/. 2025-11-26 12:38:05 -08:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: mark ISDN subsystem as orphan 2025-10-27 17:49:45 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS soc: fixes for 6.18, part 4 2025-11-28 09:57:31 -08:00
Makefile Linux 6.18.15 2026-02-27 16:05:10 -05:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.