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Shyam Prasad N e0b21b642d cifs: make sure that channel scaling is done only once 
[ Upstream commit ee36a3b345 ]

Following a successful cifs_tree_connect, we have the code
to scale up/down the number of channels in the session.
However, it is not protected by a lock today.

As a result, this code can be executed by several processes
that select the same channel. The core functions handle this
well, as they pick chan_lock. However, we've seen cases where
smb2_reconnect throws some warnings.

To fix that, this change introduces a flags bitmap inside the
cifs_ses structure. A new flag type is used to ensure that
only one process enters this section at any time.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-01 13:41:38 +01:00
..
9p
9p: Fix initialisation of netfs_inode for 9p
2024-02-05 20:17:04 +00:00
adfs
adfs: convert to new timestamp accessors
2023-10-18 13:26:18 +02:00
affs
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
afs
afs: fix the usage of read_seqbegin_or_lock() in afs_lookup_volume_rcu()
2024-02-05 20:16:47 +00:00
autofs
autofs: add: new_inode check in autofs_fill_super()
2023-11-20 14:56:36 +01:00
bcachefs
bcachefs: time_stats: Check for last_event == 0 when updating freq stats
2024-02-16 19:14:31 +01:00
befs
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
bfs
bfs: convert to new timestamp accessors
2023-10-18 13:26:19 +02:00
btrfs
btrfs: don't drop extent_map for free space inode on write error
2024-02-23 09:51:22 +01:00
cachefiles
Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-08-29 14:25:26 -07:00
ceph
ceph: prevent use-after-free in encode_cap_msg()
2024-02-23 09:51:56 +01:00
coda
coda: convert to new timestamp accessors
2023-10-18 13:26:19 +02:00
configfs
configfs: convert to new timestamp accessors
2023-10-18 13:26:19 +02:00
cramfs
Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
2023-10-30 09:47:13 -10:00
crypto
Merge tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2023-11-02 16:15:30 -10:00
debugfs
debugfs: initialize cancellations earlier
2023-12-22 07:33:02 +01:00
devpts
devpts: convert to new timestamp accessors
2023-10-18 13:26:20 +02:00
dlm
dlm: use kernel_connect() and kernel_bind()
2024-01-31 16:21:00 -08:00
ecryptfs
ecryptfs: Reject casefold directory inodes
2024-02-05 20:16:48 +00:00
efivarfs
efivarfs: Free s_fs_info on unmount
2024-01-25 15:44:39 -08:00
efs
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
erofs
erofs: fix ztailpacking for subpage compressed blocks
2024-02-05 20:16:47 +00:00
exfat
exfat: fix ctime is not updated
2023-11-03 22:24:11 +09:00
exportfs
fs: fix build error with CONFIG_EXPORTFS=m or not defined
2023-10-28 16:16:19 +02:00
ext2
ext2: Fix ki_pos update for DIO buffered-io fallback case
2023-11-22 10:17:10 +01:00
ext4
ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal()
2024-03-01 13:41:36 +01:00
f2fs
f2fs: fix to tag gcing flag on page during block migration
2024-02-05 20:16:59 +00:00
fat
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
freevxfs
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
fscache
netfs, fscache: Prevent Oops in fscache_put_cache()
2024-01-31 16:21:06 -08:00
fuse
fuse: disable FOPEN_PARALLEL_DIRECT_WRITES with FUSE_DIRECT_IO_ALLOW_MMAP
2023-12-04 10:19:32 +01:00
gfs2
gfs2: fix kernel BUG in gfs2_quota_cleanup
2024-01-25 15:44:43 -08:00
hfs
Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
2023-10-30 09:47:13 -10:00
hfsplus
Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
2023-10-30 09:47:13 -10:00
hostfs
hostfs: convert to new timestamp accessors
2023-10-18 14:08:22 +02:00
hpfs
hpfs: convert to new timestamp accessors
2023-10-18 14:08:22 +02:00
hugetlbfs
mm: hugetlb pages should not be reserved by shmat() if SHM_NORESERVE
2024-02-23 09:51:56 +01:00
iomap
Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 19:38:47 -10:00
isofs
isofs: convert to new timestamp accessors
2023-10-18 14:08:22 +02:00
jbd2
jbd2: fix soft lockup in journal_finish_inode_data_buffers()
2023-12-12 10:25:46 -05:00
jffs2
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
jfs
jfs: fix array-index-out-of-bounds in diNewExt
2024-02-05 20:16:47 +00:00
kernfs
fs/kernfs/dir: obey S_ISGID
2024-02-05 20:17:04 +00:00
lockd
SUNRPC: change how svc threads are asked to exit.
2023-10-16 12:44:04 -04:00
minix
minix: convert to new timestamp accessors
2023-10-18 14:08:23 +02:00
netfs
netfs: Only call folio_start_fscache() one time for each folio
2023-09-18 12:03:46 -07:00
nfs
pNFS: Fix the pnfs block driver's calculation of layoutget size
2024-01-25 15:44:44 -08:00
nfs_common
NFSv4.2: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:52 -07:00
nfsd
nfsd: don't take fi_lock in nfsd_break_deleg_cb()
2024-02-23 09:51:59 +01:00
nilfs2
nilfs2: fix potential bug in end_buffer_async_write
2024-02-23 09:51:59 +01:00
nls
nls: Hide new NLS_UCS2_UTILS
2023-08-31 12:07:34 -05:00
notify
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
ntfs
Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-11-07 12:11:26 -08:00
ntfs3
fs/ntfs3: Fix an NULL dereference bug
2024-02-16 19:14:25 +01:00
ocfs2
ocfs2: Avoid touching renamed directory if parent does not change
2024-02-05 20:16:57 +00:00
omfs
omfs: convert to new timestamp accessors
2023-10-18 14:08:25 +02:00
openpromfs
openpromfs: convert to new timestamp accessors
2023-10-18 14:08:25 +02:00
orangefs
Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
2023-10-30 09:47:13 -10:00
overlayfs
ovl: mark xwhiteouts directory with overlay.opaque='x'
2024-01-31 16:21:11 -08:00
proc
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
2024-02-23 09:51:58 +01:00
pstore
pstore/ram: Fix crash when setting number of cpus to an odd number
2024-02-05 20:16:47 +00:00
qnx4
qnx4: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
qnx6
qnx6: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
quota
Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 19:38:47 -10:00
ramfs
ramfs: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
reiserfs
reiserfs: Avoid touching renamed directory if parent does not change
2024-02-05 20:16:57 +00:00
romfs
Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
2023-10-30 09:47:13 -10:00
smb
cifs: make sure that channel scaling is done only once
2024-03-01 13:41:38 +01:00
squashfs
squashfs: squashfs_read_data need to check if the length is 0
2023-12-06 16:12:45 -08:00
sysfs
kernfs: sysfs: support custom llseek method for sysfs entries
2023-10-05 13:42:11 +02:00
sysv
sysv: convert to new timestamp accessors
2023-10-18 14:08:28 +02:00
tracefs
eventfs: Keep all directory links at 1
2024-02-23 09:51:45 +01:00
ubifs
ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path
2024-01-31 16:21:02 -08:00
udf
Merge tag 'fs_for_v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2023-11-02 08:19:51 -10:00
ufs
fix ufs_get_locked_folio() breakage
2023-12-13 11:14:09 -05:00
unicode
unicode: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:54 -07:00
vboxsf
vboxsf: convert to new timestamp accessors
2023-10-18 14:08:29 +02:00
verity
fsverity: skip PKCS#7 parser when keyring is empty
2023-08-20 10:33:43 -07:00
xfs
xfs: read only mounts with fsopen mount API are busted
2024-01-31 16:21:12 -08:00
zonefs
zonefs: Improve error handling
2024-02-23 09:51:53 +01:00
aio.c
aio: Annotate struct kioctx_table with __counted_by
2023-09-20 14:22:01 +02:00
anon_inodes.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
attr.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
bad_inode.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
binfmt_elf_fdpic.c
Merge tag 'execve-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2023-10-30 19:28:19 -10:00
binfmt_elf_test.c
…
binfmt_elf.c
binfmt_elf: Only report padzero() errors when PROT_WRITE
2023-10-03 19:48:44 -07:00
binfmt_flat.c
…
binfmt_misc.c
Merge tag 'execve-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2023-10-30 19:28:19 -10:00
binfmt_script.c
…
buffer.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
char_dev.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
compat_binfmt_elf.c
…
coredump.c
Merge tag 'v6.5/vfs.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2023-06-26 09:50:21 -07:00
d_path.c
fs: d_path: include internal.h
2023-05-17 09:16:59 +02:00
dax.c
mm: convert DAX lock/unlock page to lock/unlock folio
2023-10-04 10:32:20 -07:00
dcache.c
fast_dput(): handle underflows gracefully
2024-02-05 20:16:57 +00:00
direct-io.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
drop_caches.c
fs: drop_caches: draining pages before dropping caches
2023-08-18 10:12:11 -07:00
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-07-11 11:41:34 +02:00
eventpoll.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
exec.c
exec: Fix error handling in begin_new_exec()
2024-01-31 16:21:11 -08:00
fcntl.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
fhandle.c
exportfs: add helpers to check if filesystem can encode/decode file handles
2023-10-24 17:57:45 +02:00
file_table.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
file.c
file, i915: fix file reference for mmap_singleton()
2023-10-25 22:17:04 +02:00
filesystems.c
…
fs_context.c
fs: factor out vfs_parse_monolithic_sep() helper
2023-10-12 18:53:36 +03:00
fs_parser.c
ext4: journal_path mount options should follow links
2022-12-01 10:46:54 -05:00
fs_pin.c
…
fs_struct.c
kill do_each_thread()
2023-08-21 13:46:25 -07:00
fs_types.c
…
fs-writeback.c
Merge tag 'vfs-6.7.misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
2023-10-30 09:14:19 -10:00
fsopen.c
fsconfig: ensure that dirfd is set to aux
2023-09-22 14:09:06 +02:00
init.c
fs: add a new SB_I_NOUMASK flag
2023-10-19 11:02:47 +02:00
inode.c
filemap: add a per-mapping stable writes flag
2023-11-20 15:05:18 +01:00
internal.h
fs: store real path instead of fake path in backing file f_path
2023-10-19 11:03:15 +02:00
ioctl.c
lsm: new security_file_ioctl_compat() hook
2024-01-31 16:21:00 -08:00
Kconfig
mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
2023-12-06 16:12:49 -08:00
Kconfig.binfmt
riscv: support the elf-fdpic binfmt loader
2023-08-23 14:17:43 -07:00
kernel_read_file.c
fs: Fix kernel-doc warnings
2023-08-19 12:12:12 +02:00
libfs.c
libfs: getdents() should return 0 after reaching EOD
2023-11-20 15:34:22 +01:00
locks.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
Makefile
bcachefs: Initial commit
2023-10-22 17:08:07 -04:00
mbcache.c
mbcache: dynamically allocate the mbcache shrinker
2023-10-04 10:32:25 -07:00
mnt_idmapping.c
fs: export mnt_idmap_get/mnt_idmap_put
2023-11-03 23:28:33 +01:00
mount.h
…
mpage.c
buffer: remove folio_create_empty_buffers()
2023-10-25 16:47:10 -07:00
namei.c
new helper: user_path_locked_at()
2024-02-16 19:14:30 +01:00
namespace.c
fs: relax mount_setattr() permission checks
2024-02-23 09:51:55 +01:00
nsfs.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
open.c
cred: get rid of CONFIG_DEBUG_CREDENTIALS
2023-12-15 14:19:48 -08:00
pipe.c
pipe: wakeup wr_wait after setting max_usage
2024-01-31 16:20:53 -08:00
pnode.c
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
pnode.h
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
posix_acl.c
fs: convert to ctime accessor functions
2023-07-13 10:28:04 +02:00
proc_namespace.c
tty, proc, kernfs, random: Use copy_splice_read()
2023-05-24 08:42:16 -06:00
read_write.c
fs: Fix one kernel-doc comment
2023-08-15 08:32:45 +02:00
readdir.c
vfs: get rid of old '->iterate' directory operation
2023-08-06 15:08:35 +02:00
remap_range.c
fs: use UB-safe check for signed addition overflow in remap_verify_area
2023-05-24 11:03:59 +02:00
select.c
…
seq_file.c
…
signalfd.c
…
splice.c
Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-08-29 14:25:26 -07:00
stack.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
stat.c
fs: Pass AT_GETATTR_NOSEC flag to getattr interface function
2023-11-18 14:54:07 +01:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-17 15:20:17 +02:00
super.c
Merge tag 'ovl-update-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
2023-11-07 11:46:31 -08:00
sync.c
…
sysctls.c
sysctl: Refactor base paths registrations
2023-05-23 21:43:26 -07:00
timerfd.c
…
userfaultfd.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
utimes.c
Merge tag 'fs.idmapped.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping
2023-02-20 11:53:11 -08:00
xattr.c
xattr: make the xattr array itself const
2023-10-09 16:24:16 +02:00