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Trond Myklebust 67e85cfa95 umount: Allow superblock owners to force umount 
[ Upstream commit e1ff7aa34d ]

Loosen the permission check on forced umount to allow users holding
CAP_SYS_ADMIN privileges in namespaces that are privileged with respect
to the userns that originally mounted the filesystem.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Link: https://lore.kernel.org/r/12f212d4ef983714d065a6bb372fbb378753bf4c.1742315194.git.trond.myklebust@hammerspace.com
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-04-20 10:15:10 +02:00
..
9p
fs/9p: fix NULL pointer dereference on mkdir
2025-04-10 14:39:32 +02:00
adfs
…
affs
affs: don't write overlarge OFS data block size fields
2025-04-10 14:39:29 +02:00
afs
afs: Give an afs_server object a ref on the afs_cell object it points to
2025-03-07 18:25:29 +01:00
autofs
autofs: fix thinko in validate_dev_ioctl()
2024-10-28 13:16:56 +01:00
bcachefs
bcachefs: bch2_ioctl_subvolume_destroy() fixes
2025-04-07 10:08:37 +02:00
befs
…
bfs
…
btrfs
btrfs: fix two misuses of folio_shift()
2025-03-22 12:54:16 -07:00
cachefiles
cachefiles: Parse the "secctx" immediately
2025-01-23 17:22:55 +01:00
ceph
ceph: fix memory leak in ceph_mds_auth_match()
2025-02-17 10:05:37 +01:00
coda
…
configfs
…
cramfs
…
crypto
…
debugfs
…
devpts
…
dlm
dlm: fix srcu_read_lock() return type to int
2025-02-08 09:56:50 +01:00
ecryptfs
…
efivarfs
efivarfs: Fix error on non-existent file
2024-12-27 14:02:07 +01:00
efs
efs: fix the efs new mount api implementation
2024-12-05 14:01:10 +01:00
erofs
erofs: fix potential return value overflow of z_erofs_shrink_scan()
2025-02-08 09:57:57 +01:00
exfat
exfat: fix potential wrong error return from get_block
2025-04-10 14:39:39 +02:00
exportfs
…
ext2
…
ext4
ext4: fix OOB read when checking dotdot dir
2025-04-10 14:39:39 +02:00
f2fs
f2fs: Introduce linear search for dentries
2025-02-08 09:58:11 +01:00
fat
fat: fix uninitialized variable
2024-10-17 00:28:06 -07:00
freevxfs
…
fuse
fuse: fix dax truncate/punch_hole fault path
2025-04-10 14:39:25 +02:00
gfs2
gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag
2025-02-01 18:39:37 +01:00
hfs
hfs: Sanity check the root record
2025-01-23 17:22:54 +01:00
hfsplus
hfsplus: don't query the device logical block size multiple times
2024-12-05 14:01:15 +01:00
hostfs
um: hostfs: avoid issues on inode number reuse by host
2025-04-10 14:39:25 +02:00
hpfs
…
hugetlbfs
mm: use aligned address in clear_gigantic_page()
2024-12-27 14:02:20 +01:00
iomap
iomap: avoid avoid truncating 64-bit offset to 32 bits
2025-01-23 17:22:56 +01:00
isofs
isofs: fix KMSAN uninit-value bug in do_isofs_readdir()
2025-04-10 14:39:22 +02:00
jbd2
jbd2: flush filesystem device before updating tail sequence
2025-01-17 13:40:33 +01:00
jffs2
jffs2: Fix rtime decompressor
2024-12-14 20:04:14 +01:00
jfs
jfs: add index corruption check to DT_GETPAGE()
2025-04-10 14:39:40 +02:00
kernfs
…
lockd
…
minix
…
netfs
netfs: Fix netfs_unbuffered_read() to return ssize_t rather than int
2025-04-10 14:39:31 +02:00
nfs
nfs: Add missing release on error in nfs_lock_and_join_requests()
2025-04-10 14:39:28 +02:00
nfs_common
nfs: fix incorrect error handling in LOCALIO
2025-02-08 09:57:59 +01:00
nfsd
NFSD: Skip sending CB_RECALL_ANY when the backchannel isn't up
2025-04-10 14:39:40 +02:00
nilfs2
nilfs2: fix possible int overflows in nilfs_fiemap()
2025-02-17 10:05:39 +01:00
nls
…
notify
fs: relax assertions on failure to encode file handles
2025-01-17 13:40:46 +01:00
ntfs3
fs/ntfs3: Prevent integer overflow in hdr_first_de()
2025-04-10 14:39:23 +02:00
ocfs2
ocfs2: validate l_tree_depth to avoid out-of-bounds access
2025-04-10 14:39:24 +02:00
omfs
…
openpromfs
…
orangefs
orangefs: fix a oob in orangefs_debug_write
2025-02-21 14:01:27 +01:00
overlayfs
ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up
2025-03-07 18:25:26 +01:00
proc
fs/procfs: fix the comment above proc_pid_wchan()
2025-04-10 14:39:26 +02:00
pstore
pstore/blk: trivial typo fixes
2025-02-08 09:56:51 +01:00
qnx4
…
qnx6
fs/qnx6: Fix building with GCC 15
2025-01-23 17:22:55 +01:00
quota
quota: flush quota_release_work upon quota writeback
2024-12-09 10:40:55 +01:00
ramfs
…
reiserfs
…
romfs
…
smb
smb: client: fix UAF in decryption with multichannel
2025-04-20 10:15:08 +02:00
squashfs
Squashfs: fix variable overflow in squashfs_readpage_block
2024-10-30 20:14:12 -07:00
sysfs
…
sysv
…
tests
…
tracefs
tracing: Fix tracefs mount options
2024-11-01 08:38:14 -04:00
ubifs
ubifs: skip dumping tnc tree when zroot is null
2025-02-08 09:58:01 +01:00
udf
udf: Verify inode link counts before performing rename
2025-01-02 10:34:17 +01:00
ufs
…
unicode
Revert "unicode: Don't special case ignorable code points"
2024-12-14 20:04:13 +01:00
vboxsf
vboxsf: fix building with GCC 15
2025-03-22 12:54:15 -07:00
verity
…
xfs
xfs: fix online repair probing when CONFIG_XFS_ONLINE_REPAIR=n
2025-02-27 04:30:22 -08:00
zonefs
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aio.c
…
anon_inodes.c
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attr.c
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backing-file.c
fs: pass offset and result to backing_file end_write() callback
2024-10-16 13:17:45 +02:00
bad_inode.c
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binfmt_elf_fdpic.c
Revert "fs: don't block i_writecount during exec"
2024-12-05 14:02:50 +01:00
binfmt_elf.c
Revert "fs: don't block i_writecount during exec"
2024-12-05 14:02:50 +01:00
binfmt_flat.c
binfmt_flat: Fix integer overflow bug on 32 bit systems
2025-02-17 10:05:04 +01:00
binfmt_misc.c
Revert "fs: don't block i_writecount during exec"
2024-12-05 14:02:50 +01:00
binfmt_script.c
…
bpf_fs_kfuncs.c
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buffer.c
fs/writeback: convert wbc_account_cgroup_owner to take a folio
2025-01-17 13:40:33 +01:00
char_dev.c
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compat_binfmt_elf.c
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coredump.c
coredump: Only sort VMAs when core_sort_vma sysctl is set
2025-03-13 13:02:01 +01:00
d_path.c
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dax.c
fsdax: dax_unshare_iter needs to copy entire blocks
2024-10-07 13:51:47 +02:00
dcache.c
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direct-io.c
…
drop_caches.c
…
eventfd.c
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eventpoll.c
epoll: Add synchronous wakeup support for ep_poll_callback
2024-12-27 14:02:20 +01:00
exec.c
exec: fix the racy usage of fs_struct->in_exec
2025-04-10 14:39:40 +02:00
fcntl.c
fcntl: make F_DUPFD_QUERY associative
2024-12-05 14:02:47 +01:00
fhandle.c
…
file_table.c
fs: fix proc_handler for sysctl_nr_open
2025-02-08 09:56:50 +01:00
file.c
fs: consistently deref the files table with rcu_dereference_raw()
2025-04-20 10:15:10 +02:00
filesystems.c
…
fs_context.c
…
fs_parser.c
…
fs_pin.c
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fs_struct.c
…
fs_types.c
…
fs-writeback.c
fs/writeback: convert wbc_account_cgroup_owner to take a folio
2025-01-17 13:40:33 +01:00
fsopen.c
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init.c
…
inode.c
bcachefs: do not use PF_MEMALLOC_NORECLAIM
2024-10-09 12:47:18 -07:00
internal.h
…
ioctl.c
…
Kconfig
nfs_common: fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
2024-10-03 16:19:51 -04:00
Kconfig.binfmt
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kernel_read_file.c
…
libfs.c
libfs: Fix duplicate directory entry in offset_dir_lookup
2025-03-28 22:03:28 +01:00
locks.c
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Makefile
…
mbcache.c
…
mnt_idmapping.c
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mount.h
fs: kill MNT_ONRB
2025-01-17 13:40:50 +01:00
mpage.c
fs/writeback: convert wbc_account_cgroup_owner to take a folio
2025-01-17 13:40:33 +01:00
namei.c
fuse: don't truncate cached, mutated symlink
2025-03-22 12:54:20 -07:00
namespace.c
umount: Allow superblock owners to force umount
2025-04-20 10:15:10 +02:00
nsfs.c
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open.c
openat2: explicitly return -E2BIG for (usize > PAGE_SIZE)
2024-10-10 12:09:03 +02:00
pidfs.c
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pipe.c
…
pnode.c
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pnode.h
…
posix_acl.c
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proc_namespace.c
…
read_write.c
fs/block: Check for IOCB_DIRECT in generic_atomic_write_valid()
2024-12-05 14:01:11 +01:00
readdir.c
…
remap_range.c
…
select.c
select: Fix unbalanced user_access_end()
2025-02-08 09:56:53 +01:00
seq_file.c
…
signalfd.c
…
splice.c
…
stack.c
…
stat.c
…
statfs.c
…
super.c
fs/super.c: introduce get_tree_bdev_flags()
2024-10-21 14:30:26 +02:00
sync.c
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sysctls.c
…
timerfd.c
…
userfaultfd.c
fork: do not invoke uffd on fork if error occurs
2024-10-28 21:40:38 -07:00
utimes.c
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xattr.c
…