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a1.2
sst-linux/fs
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Chuck Lever 14a6b65c83 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 14:33:43 +02:00
..
9p fs/9p: fix uninitialized values during inode evict 2024-11-22 15:37:34 +01:00
adfs
affs affs: don't write overlarge OFS data block size fields 2025-04-10 14:33:38 +02:00
afs afs: Fix the server_list to unuse a displaced server rather than putting it 2025-03-07 16:56:43 +01:00
autofs autofs: fix memory leak of waitqueues in autofs_catatonic_mode 2023-09-23 11:10:59 +02:00
befs
bfs
btrfs btrfs: handle errors from btrfs_dec_ref() properly 2025-04-10 14:33:42 +02:00
cachefiles cachefiles: Fix NULL pointer dereference in object->file 2025-02-21 13:49:54 +01:00
ceph ceph: give up on paths longer than PATH_MAX 2025-01-17 13:34:36 +01:00
coda
configfs
cramfs
crypto fs: Create a generic is_dot_dotdot() utility 2024-10-17 15:21:17 +02:00
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 fs: Create a generic is_dot_dotdot() utility 2024-10-17 15:21:17 +02:00
efivarfs efivarfs: Fix error on non-existent file 2024-12-27 13:52:55 +01:00
efs
erofs erofs: handle NONHEAD !delta[1] lclusters gracefully 2025-01-23 17:17:17 +01:00
exfat exfat: fix the infinite loop in exfat_find_last_cluster() 2025-04-10 14:33:37 +02:00
exportfs exportfs: use pr_debug for unreachable debug statements 2024-03-06 14:45:15 +00:00
ext2 ext2: Verify bitmap and itable block numbers before using them 2024-08-03 08:49:32 +02:00
ext4 ext4: fix OOB read when checking dotdot dir 2025-04-10 14:33:43 +02:00
f2fs f2fs: fix to wait dio completion 2025-02-21 13:50:12 +01:00
fat fat: fix uninitialized variable 2024-10-22 15:56:43 +02:00
freevxfs
fscache netfs/fscache: Add a memory barrier for FSCACHE_VOLUME_CREATING 2024-12-14 19:53:15 +01:00
fuse fuse: fix dax truncate/punch_hole fault path 2025-04-10 14:33:36 +02:00
gfs2 gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag 2025-02-01 18:30:09 +01:00
hfs hfs: Sanity check the root record 2025-01-23 17:17:11 +01:00
hfsplus hfsplus: don't query the device logical block size multiple times 2024-12-14 19:53:16 +01:00
hostfs
hpfs
hugetlbfs mm/hugetlb: add hugetlb_folio_subpool() helpers 2024-05-17 11:55:51 +02:00
iomap iomap: avoid avoid truncating 64-bit offset to 32 bits 2025-01-23 17:17:12 +01:00
isofs isofs: fix KMSAN uninit-value bug in do_isofs_readdir() 2025-04-10 14:33:35 +02:00
jbd2 jbd2: flush filesystem device before updating tail sequence 2025-01-17 13:34:37 +01:00
jffs2 jffs2: Fix rtime decompressor 2024-12-14 19:54:52 +01:00
jfs jfs: add index corruption check to DT_GETPAGE() 2025-04-10 14:33:43 +02:00
kernfs kernfs: fix false-positive WARN(nr_mmapped) in kernfs_drain_open_files 2024-08-29 17:30:35 +02:00
lockd nfsd: stop setting ->pg_stats for unused stats 2024-08-19 06:00:04 +02:00
minix
netfs netfs: Only call folio_start_fscache() one time for each folio 2023-10-06 14:56:32 +02:00
nfs NFSv4: Don't trigger uneccessary scans for return-on-close delegations 2025-04-10 14:33:36 +02:00
nfs_common
nfsd NFSD: Skip sending CB_RECALL_ANY when the backchannel isn't up 2025-04-10 14:33:43 +02:00
nilfs2 nilfs2: handle errors that nilfs_prepare_chunk() may return 2025-03-13 12:53:25 +01:00
nls fs/nls: make load_nls() take a const parameter 2023-09-13 09:42:22 +02:00
notify fsnotify: fix sending inotify event with unexpected filename 2024-12-14 19:53:59 +01:00
ntfs
ntfs3 fs/ntfs3: Fix a couple integer overflows on 32bit systems 2025-04-10 14:33:36 +02:00
ocfs2 ocfs2: validate l_tree_depth to avoid out-of-bounds access 2025-04-10 14:33:36 +02:00
omfs
openpromfs openpromfs: finish conversion to the new mount API 2024-06-12 11:03:03 +02:00
orangefs orangefs: fix a oob in orangefs_debug_write 2025-02-21 13:50:00 +01:00
overlayfs ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up 2025-03-07 16:56:42 +01:00
proc fs/procfs: fix the comment above proc_pid_wchan() 2025-04-10 14:33:37 +02:00
pstore pstore/blk: trivial typo fixes 2025-02-21 13:48:53 +01:00
qnx4
qnx6
quota quota: flush quota_release_work upon quota writeback 2024-12-14 19:54:10 +01:00
ramfs shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs 2023-07-19 16:22:11 +02:00
reiserfs reiserfs: fix uninit-value in comp_keys 2024-08-29 17:30:20 +02:00
romfs
smb ksmbd: validate zero num_subauth before sub_auth is accessed 2025-04-10 14:33:43 +02:00
squashfs Squashfs: check the inode number is not the invalid value of zero 2025-03-07 16:56:51 +01:00
sysfs fs: sysfs: Fix reference leak in sysfs_break_active_protection() 2024-04-27 17:07:16 +02:00
sysv sysv: don't call sb_bread() with pointers_lock held 2024-04-13 13:05:05 +02:00
tracefs tracefs: Add missing lockdown check to tracefs_create_dir() 2023-09-23 11:11:12 +02:00
ubifs ubifs: skip dumping tnc tree when zroot is null 2025-02-21 13:49:21 +01:00
udf udf: Fix directory iteration for longer tail extents 2024-12-27 13:53:01 +01:00
ufs
unicode Revert "unicode: Don't special case ignorable code points" 2024-12-14 19:54:50 +01:00
vboxsf vboxsf: fix building with GCC 15 2025-03-28 21:58:51 +01:00
verity fsverity: skip PKCS#7 parser when keyring is empty 2023-09-13 09:43:03 +02:00
xfs xfs: give xfs_extfree_intent its own perag reference 2025-03-28 21:59:02 +01:00
zonefs zonefs: Improve error handling 2024-02-23 09:12:45 +01:00
aio.c fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion 2024-04-03 15:19:42 +02:00
anon_inodes.c
attr.c attr: block mode changes of symlinks 2023-09-23 11:11:10 +02:00
bad_inode.c
binfmt_elf_fdpic.c fs: binfmt_elf_efpic: don't use missing interpreter's properties 2024-08-29 17:30:35 +02:00
binfmt_elf_test.c
binfmt_elf.c ELF: fix kernel.randomize_va_space double read 2024-09-12 11:10:19 +02:00
binfmt_flat.c binfmt_flat: Fix integer overflow bug on 32 bit systems 2025-02-21 13:49:39 +01:00
binfmt_misc.c binfmt_misc: cleanup on filesystem umount 2024-08-29 17:30:30 +02:00
binfmt_script.c
buffer.c
char_dev.c
compat_binfmt_elf.c
coredump.c
d_path.c
dax.c fsdax: dax_unshare_iter needs to copy entire blocks 2024-11-08 16:26:42 +01:00
dcache.c fs: better handle deep ancestor chains in is_subdir() 2024-07-25 09:49:18 +02:00
direct-io.c
drop_caches.c
eventfd.c eventfd: prevent underflow for eventfd semaphores 2023-09-13 09:42:27 +02:00
eventpoll.c epoll: Add synchronous wakeup support for ep_poll_callback 2024-12-27 13:53:01 +01:00
exec.c exec: fix up /proc/pid/comm in the execveat(AT_EMPTY_PATH) case 2025-02-21 13:49:29 +01:00
fcntl.c fs: Fix file_set_fowner LSM hook inconsistencies 2024-10-17 15:21:23 +02:00
fhandle.c do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak 2024-03-26 18:20:27 -04:00
file_table.c fs: fix proc_handler for sysctl_nr_open 2025-02-21 13:48:53 +01:00
file.c fs: fix missing declaration of init_files 2025-01-23 17:17:11 +01:00
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
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 fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name 2024-12-14 19:53:13 +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
kernel_read_file.c
libfs.c
locks.c filelock: Fix fcntl/close race recovery compat path 2024-07-27 11:32:19 +02:00
Makefile smb: move client and server files to common directory fs/smb 2023-06-28 11:12:40 +02:00
mbcache.c
mount.h
mpage.c
namei.c fuse: don't truncate cached, mutated symlink 2025-03-28 21:58:53 +01:00
namespace.c mount: handle OOM on mnt_warn_timestamp_expiry 2024-10-17 15:20:37 +02:00
no-block.c
nsfs.c
open.c openat2: explicitly return -E2BIG for (usize > PAGE_SIZE) 2024-11-01 01:56:06 +01:00
pipe.c fs/pipe: Fix lockdep false-positive in watchqueue pipe_write() 2024-04-10 16:28:30 +02:00
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c
readdir.c
remap_range.c
select.c hrtimer: Use and report correct timerslack values for realtime tasks 2025-03-28 21:58:48 +01:00
seq_file.c
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
statfs.c
super.c fs: don't allow non-init s_user_ns for filesystems without FS_USERNS_MOUNT 2024-08-03 08:49:53 +02:00
sync.c
sysctls.c
timerfd.c
userfaultfd.c Fix userfaultfd_api to return EINVAL as expected 2024-07-18 13:18:41 +02:00
utimes.c
xattr.c