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linux-stable/fs
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Linus Torvalds d888c83fce fs: fix fd table size alignment properly 
Jason Donenfeld reports that my commit 1c24a186398f ("fs: fd tables have
to be multiples of BITS_PER_LONG") doesn't work, and the reason is an
embarrassing brown-paper-bag bug.

Yes, we want to align the number of fds to BITS_PER_LONG, and yes, the
reason they might not be aligned is because the incoming 'max_fd'
argument might not be aligned.

But aligining the argument - while simple - will cause a "infinitely
big" maxfd (eg NR_OPEN_MAX) to just overflow to zero.  Which most
definitely isn't what we want either.

The obvious fix was always just to do the alignment last, but I had
moved it earlier just to make the patch smaller and the code look
simpler.  Duh.  It certainly made _me_ look simple.

Fixes: 1c24a186398f ("fs: fd tables have to be multiples of BITS_PER_LONG")
Reported-and-tested-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Fedor Pchelkin <aissur0002@gmail.com>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-29 23:29:18 -07:00
..
9p
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
adfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
affs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
afs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
bfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
btrfs
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
cachefiles
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
ceph
The highlights are:
2022-03-24 18:32:48 -07:00
cifs
flexible-array transformations for 5.18-rc1
2022-03-24 11:39:32 -07:00
coda
Folio changes for 5.18
2022-03-22 17:03:12 -07:00
configfs
configfs: fix a race in configfs_{,un}register_subsystem()
2022-02-22 18:30:28 +01:00
cramfs
cramfs: use bdev_nr_bytes instead of open coding it
2021-10-18 14:43:22 -06:00
crypto
fscrypt updates for 5.18
2022-03-22 09:50:16 -07:00
debugfs
debugfs: Document that debugfs_create functions need not be error checked
2022-02-25 11:56:13 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-01-24 14:17:02 +01:00
dlm
driver core changes for 5.17-rc1
2022-01-12 11:11:34 -08:00
ecryptfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
efivarfs
…
efs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
erofs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
exfat
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
exportfs
…
ext2
\n
2022-03-25 17:38:15 -07:00
ext4
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
f2fs
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
fat
Merge branch 'akpm' (patches from Andrew)
2022-03-24 14:14:07 -07:00
freevxfs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
fscache
fscache: Convert fscache_set_page_dirty() to fscache_dirty_folio()
2022-03-15 08:34:36 -04:00
fuse
Add support for Intel CET-IBT, available since Tigerlake (11th gen), which is a
2022-03-27 10:17:23 -07:00
gfs2
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
hfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
hfsplus
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
hostfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
hpfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
hugetlbfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
iomap
Fix buffered write page prefaulting
2022-03-26 12:41:52 -07:00
isofs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
jbd2
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
jffs2
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
jfs
A couple bug fixes
2022-03-29 18:17:30 -07:00
kernfs
kernfs: fix typos in comments
2022-03-18 13:38:03 +01:00
ksmbd
flexible-array transformations for 5.18-rc1
2022-03-24 11:39:32 -07:00
lockd
NFSD: Move svc_serv_ops::svo_function into struct svc_serv
2022-02-28 10:26:40 -05:00
minix
Merge branch 'akpm' (patches from Andrew)
2022-03-24 14:14:07 -07:00
netfs
netfs: Make ops->init_rreq() optional
2022-01-21 21:36:28 +00:00
nfs
NFS client updates for Linux 5.18
2022-03-29 18:55:37 -07:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
Folio changes for 5.18
2022-03-22 17:03:12 -07:00
nilfs2
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
nls
…
notify
fsnotify: remove redundant parameter judgment
2022-03-14 09:05:25 +01:00
ntfs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
ntfs3
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
ocfs2
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
omfs
fs: Convert __set_page_dirty_buffers to block_dirty_folio
2022-03-16 13:37:04 -04:00
openpromfs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
orangefs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
overlayfs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
proc
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
pstore
pstore: Don't use semaphores in always-atomic-context code
2022-03-15 11:08:23 -07:00
qnx4
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
qnx6
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
quota
quota: make dquot_quota_sync return errors from ->sync_fs
2022-01-30 08:59:47 -08:00
ramfs
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
reiserfs
\n
2022-03-25 17:38:15 -07:00
romfs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
smbfs_common
smb3: add new defines from protocol specification
2022-01-18 16:50:47 -06:00
squashfs
Merge branch 'akpm' (patches from Andrew)
2022-03-22 16:11:53 -07:00
sysfs
kernfs: move struct kernfs_root out of the public view.
2022-02-23 15:46:34 +01:00
sysv
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
tracefs
tracefs: Set the group ownership in apply_options() not parse_options()
2022-02-25 21:05:04 -05:00
ubifs
Driver core changes for 5.18-rc1
2022-03-28 12:41:28 -07:00
udf
\n
2022-03-25 17:38:15 -07:00
ufs
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
unicode
Fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the
2022-02-01 11:13:24 -08:00
vboxsf
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-09-22 10:56:34 -07:00
xfs
Add support for Intel CET-IBT, available since Tigerlake (11th gen), which is a
2022-03-27 10:17:23 -07:00
zonefs
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
aio.c
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
anon_inodes.c
fs: add anon_inode_getfile_secure() similar to anon_inode_getfd_secure()
2021-09-19 22:35:37 -04:00
attr.c
fs: handle circular mappings correctly
2021-11-17 09:26:09 +01:00
bad_inode.c
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
coredump: Snapshot the vmas in do_coredump
2022-03-08 12:55:29 -06:00
binfmt_elf_test.c
binfmt_elf: Introduce KUnit test
2022-03-03 20:38:56 -08:00
binfmt_elf.c
execve updates for v5.18-rc1
2022-03-21 19:16:02 -07:00
binfmt_flat.c
coredump: Don't compile flat_core_dump when coredumps are disabled
2022-03-09 10:37:07 -06:00
binfmt_misc.c
Fix regression due to "fs: move binfmt_misc sysctl to its own file"
2022-02-09 09:50:02 -08:00
binfmt_script.c
…
buffer.c
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
char_dev.c
…
compat_binfmt_elf.c
binfmt_elf: Introduce KUnit test
2022-03-03 20:38:56 -08:00
coredump.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
d_path.c
d_path: fix Kernel doc validator complaining
2021-11-06 13:30:32 -07:00
dax.c
dax for 5.18
2022-03-24 18:12:09 -07:00
dcache.c
mm: dcache: use kmem_cache_alloc_lru() to allocate dentry
2022-03-22 15:57:03 -07:00
direct-io.c
block: remove the per-bio/request write hint
2022-03-07 12:45:57 -07:00
drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: Export eventfd_wake_count to modules
2021-09-06 07:20:56 -04:00
eventpoll.c
eventpoll: simplify sysctl declaration with register_sysctl()
2022-01-22 08:33:35 +02:00
exec.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
fcntl.c
fs: remove fs.f_write_hint
2022-03-08 17:55:03 -07:00
fhandle.c
…
file_table.c
fs/file_table: fix adding missing kmemleak_not_leak()
2022-02-17 10:23:19 -08:00
file.c
fs: fix fd table size alignment properly
2022-03-29 23:29:18 -07:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
vfs: fs_context: fix up param length parsing in legacy_parse_param
2022-01-18 09:23:19 +02:00
fs_parser.c
fs_parse: allow parameter value to be empty
2021-12-09 14:09:36 -05:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
Merge branch 'akpm' (patches from Andrew)
2022-03-22 16:11:53 -07:00
fsopen.c
…
init.c
…
inode.c
fs: introduce alloc_inode_sb() to allocate filesystems specific inode
2022-03-22 15:57:03 -07:00
internal.h
for-5.18-tag
2022-03-22 10:51:40 -07:00
io_uring.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
io-wq.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
io-wq.h
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
ioctl.c
fs: allow cross-vfsmount reflink/dedupe
2022-03-14 13:13:53 +01:00
Kconfig
Folio changes for 5.18
2022-03-22 17:03:12 -07:00
Kconfig.binfmt
execve updates for v5.18-rc1
2022-03-21 19:16:02 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
fs: Convert __set_page_dirty_no_writeback to noop_dirty_folio
2022-03-16 13:37:05 -04:00
locks.c
fs: move locking sysctls where they are used
2022-01-22 08:33:36 +02:00
Makefile
Fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the
2022-02-01 11:13:24 -08:00
mbcache.c
…
mount.h
…
mpage.c
for-5.18/alloc-cleanups-2022-03-25
2022-03-26 11:59:30 -07:00
namei.c
\n
2022-01-28 17:51:31 +02:00
namespace.c
fs.rt.v5.18
2022-03-24 10:06:43 -07:00
no-block.c
…
nsfs.c
…
open.c
fs: remove fs.f_write_hint
2022-03-08 17:55:03 -07:00
pipe.c
fs/pipe.c: local vars have to match types of proper pipe_inode_info fields
2022-03-23 19:00:34 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
fs: support mapped mounts of mapped filesystems
2021-12-05 10:28:57 +01:00
proc_namespace.c
fs: add is_idmapped_mnt() helper
2021-12-03 18:44:06 +01:00
read_write.c
fs: export variant of generic_write_checks without iov_iter
2022-03-14 13:13:50 +01:00
readdir.c
…
remap_range.c
Filesystem folio changes for 5.18
2022-03-22 18:26:56 -07:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-11 09:03:05 -08:00
seq_file.c
seq_file: move seq_escape() to a header
2021-11-09 10:02:52 -08:00
signalfd.c
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
splice.c
mm: Convert remove_mapping() to take a folio
2022-03-21 12:59:01 -04:00
stack.c
…
stat.c
io-uring: Make statx API stable
2022-03-10 09:33:55 -07:00
statfs.c
…
super.c
vfs: make freeze_super abort when sync_filesystem returns error
2022-01-30 08:59:47 -08:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-01-30 08:59:47 -08:00
sysctls.c
fs: move namespace sysctls and declare fs base directory
2022-01-22 08:33:36 +02:00
timerfd.c
timerfd: Provide timerfd_resume()
2021-08-10 17:57:22 +02:00
userfaultfd.c
userfaultfd: provide unmasked address on page-fault
2022-03-22 15:57:08 -07:00
utimes.c
…
xattr.c
…