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Miklos Szeredi 970e8c49f2 fuse: fix root lookup with nonzero generation 
[ Upstream commit 68ca1b49e430f6534d0774a94147a823e3b8b26e ]

The root inode has a fixed nodeid and generation (1, 0).

Prior to the commit 15db16837a35 ("fuse: fix illegal access to inode with
reused nodeid") generation number on lookup was ignored.  After this commit
lookup with the wrong generation number resulted in the inode being
unhashed.  This is correct for non-root inodes, but replacing the root
inode is wrong and results in weird behavior.

Fix by reverting to the old behavior if ignoring the generation for the
root inode, but issuing a warning in dmesg.

Reported-by: Antonio SJ Musumeci <trapexit@spawn.link>
Closes: https://lore.kernel.org/all/CAOQ4uxhek5ytdN8Yz2tNEOg5ea4NkBb4nk0FGPjPk_9nz-VG3g@mail.gmail.com/
Fixes: 15db16837a35 ("fuse: fix illegal access to inode with reused nodeid")
Cc: <stable@vger.kernel.org> # v5.14
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-03 15:19:30 +02:00
..
9p
9p: Fix initialisation of netfs_inode for 9p
2024-02-05 20:12:59 +00:00
adfs
…
affs
affs: initialize fsdata in affs_truncate()
2023-02-01 08:34:08 +01:00
afs
afs: Revert "afs: Hide silly-rename files from userspace"
2024-03-26 18:20:57 -04:00
autofs
autofs: fix memory leak of waitqueues in autofs_catatonic_mode
2023-09-23 11:10:59 +02:00
befs
…
bfs
…
btrfs
btrfs: fix data race at btrfs_use_block_rsv() when accessing block reserve
2024-03-26 18:20:26 -04:00
cachefiles
cachefiles: fix memory leak in cachefiles_add_cache()
2024-03-01 13:26:32 +01:00
ceph
ceph: switch to corrected encoding of max_xattr_size in mdsmap
2024-03-15 10:48:13 -04:00
coda
coda: Avoid partial allocation of sig_inputArgs
2023-03-10 09:33:52 +01:00
configfs
configfs: fix possible memory leak in configfs_create_dir()
2022-12-31 13:32:22 +01:00
cramfs
fs/cramfs/inode.c: initialize file_ra_state
2023-03-10 09:34:09 +01:00
crypto
blk-crypto: add a blk_crypto_config_supported_natively helper
2023-05-11 23:03:00 +09:00
debugfs
debugfs: fix automount d_fsdata usage
2024-01-20 11:50:04 +01:00
devpts
…
dlm
fs: dlm: don't put dlm_local_addrs on heap
2024-02-16 19:06:29 +01:00
ecryptfs
ecryptfs: Reject casefold directory inodes
2024-02-05 20:12:49 +00:00
efivarfs
efivarfs: Request at most 512 bytes for variable names
2024-03-06 14:45:11 +00:00
efs
…
erofs
erofs: apply proper VMA alignment for memory mapped files on THP
2024-03-15 10:48:16 -04:00
exfat
exfat: support handle zero-size directory
2023-11-28 17:07:00 +00:00
exportfs
exportfs: use pr_debug for unreachable debug statements
2024-03-06 14:45:15 +00:00
ext2
ext2: fix datatype of block number in ext2_xattr_set2()
2023-09-23 11:11:05 +02:00
ext4
ext4: correct best extent lstart adjustment logic
2024-04-03 15:19:26 +02:00
f2fs
f2fs: compress: fix reserve_cblocks counting error when out of space
2024-03-26 18:20:56 -04:00
fat
fat: fix uninitialized field in nostale filehandles
2024-04-03 15:19:27 +02:00
freevxfs
…
fscache
netfs, fscache: Prevent Oops in fscache_put_cache()
2024-01-31 16:17:04 -08:00
fuse
fuse: fix root lookup with nonzero generation
2024-04-03 15:19:30 +02:00
gfs2
gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
2024-01-25 15:27:22 -08:00
hfs
hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
2023-03-10 09:34:07 +01:00
hfsplus
fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode()
2023-05-24 17:32:34 +01:00
hostfs
hostfs: move from strlcpy with unused retval to strscpy
2022-09-19 22:46:25 +02:00
hpfs
…
hugetlbfs
mm: hugetlb pages should not be reserved by shmat() if SHM_NORESERVE
2024-02-23 09:12:46 +01:00
iomap
iomap: update ki_pos a little later in iomap_dio_complete
2023-12-08 08:51:20 +01:00
isofs
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
jbd2
jbd2: fix soft lockup in journal_finish_inode_data_buffers()
2024-01-20 11:50:07 +01:00
jffs2
jffs2: reduce stack usage in jffs2_build_xattr_subsystem()
2023-07-19 16:22:11 +02:00
jfs
jfs: fix array-index-out-of-bounds in diNewExt
2024-02-05 20:12:48 +00:00
kernfs
fs/kernfs/dir: obey S_ISGID
2024-02-05 20:12:58 +00:00
lockd
lockd: fix file selection in nlmsvc_cancel_blocked
2024-03-06 14:45:16 +00:00
minix
vfs: open inside ->tmpfile()
2022-09-24 07:00:00 +02:00
netfs
netfs: Only call folio_start_fscache() one time for each folio
2023-10-06 14:56:32 +02:00
nfs
nfs: fix panic when nfs4_ff_layout_prepare_ds() fails
2024-03-26 18:20:57 -04:00
nfs_common
…
nfsd
nfsd: Fix creation time serialization order
2024-03-26 18:20:24 -04:00
nilfs2
nilfs2: replace WARN_ONs for invalid DAT metadata block requests
2024-02-23 09:12:52 +01:00
nls
fs/nls: make load_nls() take a const parameter
2023-09-13 09:42:22 +02:00
notify
fanotify: disallow mount/sb marks on kernel internal pseudo fs
2023-07-19 16:22:05 +02:00
ntfs
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
ntfs3
fs/ntfs3: Fix NULL pointer dereference in 'ni_write_inode'
2024-03-06 14:45:06 +00:00
ocfs2
fs: ocfs2: namei: check return value of ocfs2_add_entry()
2023-09-13 09:42:33 +02:00
omfs
…
openpromfs
…
orangefs
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
overlayfs
ima: detect changes to the backing overlay file
2023-11-28 17:07:12 +00:00
proc
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
2024-03-15 10:48:22 -04:00
pstore
pstore: inode: Only d_invalidate() is needed
2024-03-26 18:20:38 -04:00
qnx4
…
qnx6
fs/qnx6: delete unnecessary checks before brelse()
2022-09-11 21:55:07 -07:00
quota
quota: Fix rcu annotations of inode dquot pointers
2024-03-26 18:20:47 -04:00
ramfs
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
2023-07-19 16:22:11 +02:00
reiserfs
reiserfs: Check the return value from __getblk()
2023-09-13 09:42:27 +02:00
romfs
…
smb
smb3: clarify mount warning
2024-03-01 13:26:30 +01:00
squashfs
revert "squashfs: harden sanity check in squashfs_read_xattr_id_table"
2023-02-22 12:59:50 +01:00
sysfs
…
sysv
fs/sysv: Null check to prevent null-ptr-deref bug
2023-08-11 12:08:23 +02:00
tracefs
tracefs: Add missing lockdown check to tracefs_create_dir()
2023-09-23 11:11:12 +02:00
ubifs
ubifs: Set page uptodate in the correct place
2024-04-03 15:19:27 +02:00
udf
udf: initialize newblock to 0
2023-09-13 09:43:05 +02:00
ufs
ufs: replace ll_rw_block()
2022-09-11 20:26:07 -07:00
unicode
…
vboxsf
…
verity
fsverity: skip PKCS#7 parser when keyring is empty
2023-09-13 09:43:03 +02:00
xfs
xfs: read only mounts with fsopen mount API are busted
2024-01-31 16:17:08 -08:00
zonefs
zonefs: Improve error handling
2024-02-23 09:12:45 +01:00
aio.c
fs/aio: Restrict kiocb_set_cancel_fn() to I/O submitted via libaio
2024-03-01 13:26:39 +01:00
anon_inodes.c
…
attr.c
attr: block mode changes of symlinks
2023-09-23 11:11:10 +02:00
bad_inode.c
vfs: open inside ->tmpfile()
2022-09-24 07:00:00 +02:00
binfmt_elf_fdpic.c
fs: binfmt_elf_efpic: fix personality for ELF-FDPIC
2023-10-06 14:57:06 +02:00
binfmt_elf_test.c
…
binfmt_elf.c
mm: always expand the stack with the mmap write lock held
2023-07-01 13:16:25 +02:00
binfmt_flat.c
…
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2022-12-31 13:32:57 +01:00
binfmt_script.c
…
buffer.c
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2022-12-31 13:32:41 +01:00
compat_binfmt_elf.c
…
coredump.c
coredump: Move dump_emit_page() to kill unused warning
2023-02-22 12:59:50 +01:00
d_path.c
d_path.c: typo fix...
2022-08-20 11:34:33 -04:00
dax.c
Merge branch 'for-6.0/dax' into libnvdimm-fixes
2022-09-24 18:14:12 -07:00
dcache.c
fast_dput(): handle underflows gracefully
2024-02-05 20:12:54 +00:00
direct-io.c
block: remove PSI accounting from the bio layer
2022-09-20 08:24:38 -06:00
drop_caches.c
…
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-09-13 09:42:27 +02:00
eventpoll.c
epoll: ep_autoremove_wake_function should use list_del_init_careful
2023-06-21 16:00:54 +02:00
exec.c
exec: Fix error handling in begin_new_exec()
2024-01-31 16:17:07 -08:00
fcntl.c
fs: Fix rw_hint validation
2024-03-26 18:20:28 -04:00
fhandle.c
do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
2024-03-26 18:20:27 -04:00
file_table.c
…
file.c
file: reinstate f_pos locking optimization for regular files
2023-08-11 12:08:23 +02:00
filesystems.c
…
fs_context.c
vfs, security: Fix automount superblock LSM init problem, preventing NFS sb sharing
2023-09-13 09:42:28 +02:00
fs_parser.c
ext4: journal_path mount options should follow links
2023-01-07 11:11:59 +01:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback, cgroup: switch inodes with dirty timestamps to release dying cgwbs
2023-11-20 11:51:50 +01:00
fsopen.c
…
init.c
…
inode.c
filemap: add a per-mapping stable writes flag
2024-01-10 17:10:32 +01:00
internal.h
nfs: use vfs setgid helper
2023-08-30 16:11:10 +02:00
ioctl.c
lsm: new security_file_ioctl_compat() hook
2024-01-31 16:17:00 -08:00
Kconfig
smb: move client and server files to common directory fs/smb
2023-06-28 11:12:40 +02:00
Kconfig.binfmt
Xtensa updates for v6.1
2022-10-10 14:21:11 -07:00
kernel_read_file.c
…
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2022-12-31 13:31:58 +01:00
locks.c
filelock: add a new locks_inode_context accessor function
2024-03-06 14:45:16 +00:00
Makefile
smb: move client and server files to common directory fs/smb
2023-06-28 11:12:40 +02:00
mbcache.c
ext4: fix deadlock due to mbcache entry corruption
2023-01-07 11:12:02 +01:00
mount.h
…
mpage.c
…
namei.c
rename(): fix the locking of subdirectories
2024-01-31 16:17:02 -08:00
namespace.c
fs: relax mount_setattr() permission checks
2024-02-23 09:12:46 +01:00
no-block.c
…
nsfs.c
…
open.c
open: make RESOLVE_CACHED correctly test for O_TMPFILE
2023-08-11 12:08:22 +02:00
pipe.c
pipe: wakeup wr_wait after setting max_usage
2024-01-31 16:17:09 -08:00
pnode.c
pnode: terminate at peers of source
2023-01-04 11:29:01 +01:00
pnode.h
…
posix_acl.c
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
2022-10-10 17:53:04 -07:00
proc_namespace.c
…
read_write.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
readdir.c
…
remap_range.c
…
select.c
fs/select: rework stack allocation hack for clang
2024-03-26 18:20:28 -04:00
seq_file.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
signalfd.c
…
splice.c
mm: merge folio_has_private()/filemap_release_folio() call pairs
2024-01-10 17:10:31 +01:00
stack.c
…
stat.c
vfs: support STATX_DIOALIGN on block devices
2022-09-11 19:47:12 -05:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-24 17:32:51 +01:00
super.c
fs: Protect reconfiguration of sb read-write from racing writes
2023-08-11 12:08:24 +02:00
sync.c
…
sysctls.c
…
timerfd.c
…
userfaultfd.c
Revert "userfaultfd: don't fail on unrecognized features"
2023-04-26 14:28:37 +02:00
utimes.c
…
xattr.c
fs: don't audit the capability check in simple_xattr_list()
2022-12-31 13:31:55 +01:00