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Chuck Lever c6f2a8146d NFSD: Skip sending CB_RECALL_ANY when the backchannel isn't up 
commit 8a388c1fabeb6606e16467b23242416c0dbeffad upstream.

NFSD sends CB_RECALL_ANY to clients when the server is low on
memory or that client has a large number of delegations outstanding.

We've seen cases where NFSD attempts to send CB_RECALL_ANY requests
to disconnected clients, and gets confused. These calls never go
anywhere if a backchannel transport to the target client isn't
available. Before the server can send any backchannel operation, the
client has to connect first and then do a BIND_CONN_TO_SESSION.

This patch doesn't address the root cause of the confusion, but
there's no need to queue up these optional operations if they can't
go anywhere.

Fixes: 44df6f439a17 ("NFSD: add delegation reaper to react to low memory condition")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-10 14:39:40 +02:00
..
9p
fs/9p: fix NULL pointer dereference on mkdir
2025-04-10 14:39:32 +02:00
adfs
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
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
befs: Convert befs_symlink_read_folio() to use folio_end_read()
2024-05-31 12:31:39 +02:00
bfs
fs: Convert aops->write_begin to take a folio
2024-08-07 11:33:21 +02:00
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
coda: use param->file for FSCONFIG_SET_FD
2024-08-19 13:45:03 +02:00
configfs
fs/configfs: Add a callback to determine attribute visibility
2024-06-17 20:42:57 +02:00
cramfs
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
crypto
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
debugfs
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
devpts
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
dlm
dlm: fix srcu_read_lock() return type to int
2025-02-08 09:56:50 +01:00
ecryptfs
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
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
fhandle: relax open_by_handle_at() permission checks
2024-05-28 15:57:23 +02:00
ext2
vfs-6.12.file
2024-09-16 09:14:02 +02:00
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
freevxfs: Convert freevxfs to the new mount API.
2024-03-26 09:04:53 +01:00
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
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
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
kernfs: mount: Remove unnecessary ‘NULL’ values from knparent
2024-05-04 19:02:39 +02:00
lockd
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
minix
buffer: Convert __block_write_begin() to take a folio
2024-08-07 11:33:36 +02:00
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
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
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
fs: Convert aops->write_begin to take a folio
2024-08-07 11:33:21 +02:00
openpromfs
openpromfs: add missing MODULE_DESCRIPTION() macro
2024-06-20 09:46:01 +02:00
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
qnx4: add MODULE_DESCRIPTION()
2024-05-28 11:52:53 +02:00
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
mm: switch mm->get_unmapped_area() to a flag
2024-04-25 20:56:25 -07:00
reiserfs
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
romfs
romfs: fix romfs_read_folio()
2024-08-21 22:32:58 +02:00
smb
ksmbd: fix null pointer dereference in alloc_preauth_hash()
2025-04-10 14:39:39 +02:00
squashfs
Squashfs: fix variable overflow in squashfs_readpage_block
2024-10-30 20:14:12 -07:00
sysfs
Merge 6.9-rc5 into driver-core-next
2024-04-23 13:27:43 +02:00
sysv
buffer: Convert __block_write_begin() to take a folio
2024-08-07 11:33:36 +02:00
tests
execve: Move KUnit tests to tests/ subdirectory
2024-07-22 18:25:47 -07:00
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
ufs_rename(): fix bogus argument of folio_release_kmap()
2024-10-02 00:05:09 -04:00
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
fsverity: expose verified fsverity built-in signatures to LSMs
2024-08-20 14:03:18 -04:00
xfs
xfs: fix online repair probing when CONFIG_XFS_ONLINE_REPAIR=n
2025-02-27 04:30:22 -08:00
zonefs
zonefs fixes for 6.12-rc2
2024-10-02 12:02:15 -07:00
aio.c
fs/aio: Fix __percpu annotation of *cpu pointer in struct kioctx
2024-08-19 13:45:03 +02:00
anon_inodes.c
fs: Create anon_inode_getfile_fmode()
2024-04-26 10:33:05 +02:00
attr.c
nfsd-6.11 fixes:
2024-08-29 06:20:44 +12:00
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
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
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
fs: binfmt: add missing MODULE_DESCRIPTION() macros
2024-05-28 12:06:51 +02:00
bpf_fs_kfuncs.c
bpf: Add kfunc bpf_get_dentry_xattr() to read xattr from dentry
2024-08-07 11:26:54 -07:00
buffer.c
fs/writeback: convert wbc_account_cgroup_owner to take a folio
2025-01-17 13:40:33 +01:00
char_dev.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
compat_binfmt_elf.c
binfmt_elf: Introduce KUnit test
2022-03-03 20:38:56 -08:00
coredump.c
coredump: Only sort VMAs when core_sort_vma sysctl is set
2025-03-13 13:02:01 +01:00
d_path.c
fs: d_path: include internal.h
2023-05-17 09:16:59 +02:00
dax.c
fsdax: dax_unshare_iter needs to copy entire blocks
2024-10-07 13:51:47 +02:00
dcache.c
vfs-6.12.misc
2024-09-16 08:35:09 +02:00
direct-io.c
fs/direct-io: Remove linux/prefetch.h include
2024-08-19 13:45:02 +02:00
drop_caches.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
eventfd.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
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
struct fd layout change (and conversion to accessor helpers)
2024-09-23 09:35:36 -07:00
file_table.c
fs: fix proc_handler for sysctl_nr_open
2025-02-08 09:56:50 +01:00
file.c
fs: fix missing declaration of init_files
2025-01-23 17:22:55 +01:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
fs: factor out vfs_parse_monolithic_sep() helper
2023-10-12 18:53:36 +03:00
fs_parser.c
fs_parse: add uid & gid option option parsing helpers
2024-07-02 06:20:49 +02:00
fs_pin.c
switch the remnants of releasing the mountpoint away from fs_pin
2019-07-16 22:52:37 -04:00
fs_struct.c
kill do_each_thread()
2023-08-21 13:46:25 -07:00
fs_types.c
fs: common implementation of file type
2019-01-21 17:48:13 +01:00
fs-writeback.c
fs/writeback: convert wbc_account_cgroup_owner to take a folio
2025-01-17 13:40:33 +01:00
fsopen.c
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
init.c
fs: add a new SB_I_NOUMASK flag
2023-10-19 11:02:47 +02:00
inode.c
bcachefs: do not use PF_MEMALLOC_NORECLAIM
2024-10-09 12:47:18 -07:00
internal.h
file: reclaim 24 bytes from f_owner
2024-08-28 13:05:39 +02:00
ioctl.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
Kconfig
nfs_common: fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
2024-10-03 16:19:51 -04:00
Kconfig.binfmt
exec: Add KUnit test for bprm_stack_limits()
2024-06-19 13:13:55 -07:00
kernel_read_file.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
libfs.c
libfs: Fix duplicate directory entry in offset_dir_lookup
2025-03-28 22:03:28 +01:00
locks.c
struct fd layout change (and conversion to accessor helpers)
2024-09-23 09:35:36 -07:00
Makefile
bpf: introduce new VFS based BPF kfuncs
2024-08-06 09:01:41 -07:00
mbcache.c
vfs: remove SLAB_MEM_SPREAD flag usage
2024-02-27 11:21:31 +01:00
mnt_idmapping.c
fuse update for 6.12
2024-09-24 15:29:42 -07:00
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
statmount: let unset strings be empty
2025-02-17 10:05:48 +01:00
nsfs.c
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
open.c
openat2: explicitly return -E2BIG for (usize > PAGE_SIZE)
2024-10-10 12:09:03 +02:00
pidfs.c
pidfs: check for valid pid namespace
2024-09-27 18:29:19 +02:00
pipe.c
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
pnode.c
mounts: keep list of mounts in an rbtree
2023-11-18 14:56:16 +01:00
pnode.h
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
posix_acl.c
fs: Use in_group_or_capable() helper to simplify the code
2024-08-30 08:22:37 +02:00
proc_namespace.c
fs: rename show_mnt_opts -> show_vfsmnt_opts
2024-06-28 14:36:43 +02:00
read_write.c
fs/block: Check for IOCB_DIRECT in generic_atomic_write_valid()
2024-12-05 14:01:11 +01:00
readdir.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
remap_range.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
select.c
select: Fix unbalanced user_access_end()
2025-02-08 09:56:53 +01:00
seq_file.c
seq_file: Simplify __seq_puts()
2024-05-02 16:28:20 +02:00
signalfd.c
struct fd layout change (and conversion to accessor helpers)
2024-09-23 09:35:36 -07:00
splice.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
stack.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
stat.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
statfs.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
super.c
fs/super.c: introduce get_tree_bdev_flags()
2024-10-21 14:30:26 +02:00
sync.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
sysctls.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
timerfd.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
userfaultfd.c
fork: do not invoke uffd on fork if error occurs
2024-10-28 21:40:38 -07:00
utimes.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00
xattr.c
introduce fd_file(), convert all accessors to it.
2024-08-12 22:00:43 -04:00