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Marios Makassikis 43fb7bce88 ksmbd: fix broken transfers when exceeding max simultaneous operations 
Since commit 0a77d947f599 ("ksmbd: check outstanding simultaneous SMB
operations"), ksmbd enforces a maximum number of simultaneous operations
for a connection. The problem is that reaching the limit causes ksmbd to
close the socket, and the client has no indication that it should have
slowed down.

This behaviour can be reproduced by setting "smb2 max credits = 128" (or
lower), and transferring a large file (25GB).

smbclient fails as below:

  $ smbclient //192.168.1.254/testshare -U user%pass
  smb: \> put file.bin
  cli_push returned NT_STATUS_USER_SESSION_DELETED
  putting file file.bin as \file.bin smb2cli_req_compound_submit:
  Insufficient credits. 0 available, 1 needed
  NT_STATUS_INTERNAL_ERROR closing remote file \file.bin
  smb: \> smb2cli_req_compound_submit: Insufficient credits. 0 available,
  1 needed

Windows clients fail with 0x8007003b (with smaller files even).

Fix this by delaying reading from the socket until there's room to
allocate a request. This effectively applies backpressure on the client,
so the transfer completes, albeit at a slower rate.

Fixes: 0a77d947f599 ("ksmbd: check outstanding simultaneous SMB operations")
Signed-off-by: Marios Makassikis <mmakassikis@freebox.fr>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
2024-12-15 22:20:03 -06:00
..
9p
fs/9p: replace functions v9fs_cache_{register|unregister} with direct calls
2024-11-16 17:23:19 +09:00
adfs
Merge patch series "adfs, affs, befs, hfs, hfsplus: convert to new mount api"
2024-10-08 14:41:53 +02:00
affs
Merge patch series "adfs, affs, befs, hfs, hfsplus: convert to new mount api"
2024-10-08 14:41:53 +02:00
afs
vfs-6.12-rc6.fixes
2024-11-01 07:37:10 -10:00
autofs
autofs: fix thinko in validate_dev_ioctl()
2024-10-28 13:16:56 +01:00
bcachefs
- The series "resource: A couple of cleanups" from Andy Shevchenko
2024-11-25 16:09:48 -08:00
befs
befs: convert befs to use the new mount api
2024-09-18 11:44:43 +02:00
bfs
fs: Convert aops->write_begin to take a folio
2024-08-07 11:33:21 +02:00
btrfs
for-6.13-rc2-tag
2024-12-10 18:18:01 -08:00
cachefiles
cachefiles: Fix NULL pointer dereference in object->file
2024-11-11 14:39:38 +01:00
ceph
A fix for the mount "device" string parser from Patrick and two cred
2024-11-30 10:22:38 -08:00
coda
coda: use param->file for FSCONFIG_SET_FD
2024-08-19 13:45:03 +02:00
configfs
configfs: improve item creation performance
2024-11-14 07:45:20 +01:00
cramfs
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
crypto
Random number generator updates for Linux 6.13-rc1.
2024-11-19 10:43:44 -08:00
debugfs
debugfs: add small file operations for most files
2024-10-23 16:47:01 +02:00
devpts
…
dlm
dlm: fix dlm_recover_members refcount on error
2024-11-18 10:05:57 -06:00
ecryptfs
vfs-6.13.ecryptfs.mount.api
2024-11-26 13:39:02 -08:00
efivarfs
First batch of EFI fixes for v6.13
2024-12-15 15:33:41 -08:00
efs
efs: fix the efs new mount api implementation
2024-10-15 15:58:36 +02:00
erofs
erofs: handle NONHEAD !delta[1] lclusters gracefully
2024-11-18 18:50:14 +08:00
exfat
exfat: reduce FAT chain traversal
2024-11-25 17:08:27 +09:00
exportfs
fs: prepare for "explicit connectable" file handles
2024-11-15 11:34:57 +01:00
ext2
vfs-6.12.file
2024-09-16 09:14:02 +02:00
ext4
A lot of miscellaneous ext4 bug fixes and cleanups this cycle, most
2024-11-18 16:32:58 -08:00
f2fs
f2fs-for-6.13-rc1
2024-11-26 12:50:58 -08:00
fat
fat: fix uninitialized variable
2024-10-17 00:28:06 -07:00
freevxfs
freevxfs: Replace one-element array with flexible array member
2024-11-06 10:42:06 +01:00
fuse
virtio: features, fixes, cleanups
2024-11-27 13:11:58 -08:00
gfs2
gfs2 changes
2024-11-26 12:34:50 -08:00
hfs
hfs: convert hfs to use the new mount api
2024-10-08 14:41:46 +02:00
hfsplus
vfs-6.13.misc
2024-11-18 09:35:30 -08:00
hostfs
hostfs: Fix the NULL vs IS_ERR() bug for __filemap_get_folio()
2024-11-15 20:55:32 +01:00
hpfs
hpfs: convert hpfs to use the new mount api
2024-10-08 14:41:53 +02:00
hugetlbfs
arm64: mte: set VM_MTE_ALLOWED for hugetlbfs at correct place
2024-12-02 11:48:14 +00:00
iomap
Merge branch 'ovl.fixes'
2024-11-26 18:15:06 +01:00
isofs
isofs: avoid memory leak in iocharset
2024-11-06 20:24:41 +01:00
jbd2
jbd2: Fix comment describing journal_init_common()
2024-11-13 12:56:48 -05:00
jffs2
jffs2: Fix rtime decompressor
2024-12-05 12:31:40 +01:00
jfs
A few more patches to add sanity checks in jfs
2024-11-21 09:59:59 -08:00
kernfs
kernfs: mount: Remove unnecessary ‘NULL’ values from knparent
2024-05-04 19:02:39 +02:00
lockd
NFSD 6.13 Release Notes
2024-11-26 12:59:30 -08:00
minix
buffer: Convert __block_write_begin() to take a folio
2024-08-07 11:33:36 +02:00
netfs
fscache: Remove duplicate included header
2024-11-21 09:35:25 +01:00
nfs
NFS client updates for Linux 6.13
2024-11-30 10:17:53 -08:00
nfs_common
nfs_common: must not hold RCU while calling nfsd_file_put_local
2024-11-18 20:23:12 -05:00
nfsd
NFSD 6.13 Release Notes
2024-11-26 12:59:30 -08:00
nilfs2
nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()
2024-12-05 19:54:43 -08:00
nls
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
notify
\n
2024-11-21 09:55:45 -08:00
ntfs3
fs/ntfs3: Accumulated refactoring changes
2024-11-01 11:19:53 +03:00
ocfs2
ocfs2: update seq_file index in ocfs2_dlm_seq_next
2024-12-05 19:54:45 -08:00
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
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
overlayfs
overlayfs updates for 6.13
2024-11-22 20:55:42 -08:00
proc
fs/proc/vmcore.c: fix warning when CONFIG_MMU=n
2024-12-05 19:54:42 -08:00
pstore
Get rid of 'remove_new' relic from platform driver struct
2024-12-01 15:12:43 -08:00
qnx4
qnx4: add MODULE_DESCRIPTION()
2024-05-28 11:52:53 +02:00
qnx6
qnx6: Convert directory handling to use kmap_local
2024-08-07 11:31:56 +02:00
quota
quota: flush quota_release_work upon quota writeback
2024-11-26 22:54:00 +01:00
ramfs
mm: switch mm->get_unmapped_area() to a flag
2024-04-25 20:56:25 -07:00
romfs
romfs: fix romfs_read_folio()
2024-08-21 22:32:58 +02:00
smb
ksmbd: fix broken transfers when exceeding max simultaneous operations
2024-12-15 22:20:03 -06:00
squashfs
Squashfs: fix variable overflow in squashfs_readpage_block
2024-10-30 20:14:12 -07:00
sysfs
sysfs: bin_attribute: add const read/write callback variants
2024-11-05 14:00:28 +01:00
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
This pull request contains updates for JFFS2, UBI and UBIFS:
2024-11-30 10:32:47 -08:00
udf
udf: Verify inode link counts before performing rename
2024-11-26 22:54:24 +01:00
ufs
ufs: ufs_sb_private_info: remove unused s_{2,3}apb fields
2024-11-12 19:02:12 -05:00
unicode
Revert "unicode: Don't special case ignorable code points"
2024-12-11 14:11:23 -08:00
vboxsf
fs: Convert aops->write_end to take a folio
2024-08-07 11:32:02 +02:00
verity
fsverity: expose verified fsverity built-in signatures to LSMs
2024-08-20 14:03:18 -04:00
xfs
xfs: port xfs_ioc_start_commit to multigrain timestamps
2024-12-12 17:45:13 -08:00
zonefs
zonefs fixes for 6.12-rc2
2024-10-02 12:02:15 -07:00
aio.c
A rather large update for timekeeping and timers:
2024-11-19 16:35:06 -08:00
anon_inodes.c
fs: Create anon_inode_getfile_fmode()
2024-04-26 10:33:05 +02:00
attr.c
fs: handle delegated timestamps in setattr_copy_mgtime
2024-10-10 10:20:51 +02:00
backing-file.c
fs/backing_file: fix wrong argument in callback
2024-11-26 18:13:29 +01:00
bad_inode.c
…
binfmt_elf_fdpic.c
Revert "fs: don't block i_writecount during exec"
2024-11-27 12:51:30 +01:00
binfmt_elf.c
Revert "fs: don't block i_writecount during exec"
2024-11-27 12:51:30 +01:00
binfmt_flat.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
binfmt_misc.c
Revert "fs: don't block i_writecount during exec"
2024-11-27 12:51:30 +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
- The series "zram: optimal post-processing target selection" from
2024-11-23 09:58:07 -08:00
char_dev.c
fs: Reorganize kerneldoc parameter names
2024-10-22 11:16:57 +02:00
compat_binfmt_elf.c
binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4
2024-10-17 18:38:49 +01:00
coredump.c
coredump: add cond_resched() to dump_user_range
2024-10-22 11:16:58 +02:00
d_path.c
…
dax.c
fsdax: dax_unshare_iter needs to copy entire blocks
2024-10-07 13:51:47 +02:00
dcache.c
- The series "zram: optimal post-processing target selection" from
2024-11-23 09:58:07 -08:00
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
fdget(), trivial conversions
2024-11-03 01:28:06 -05:00
eventpoll.c
Networking changes for 6.13.
2024-11-21 08:28:08 -08:00
exec.c
Revert "fs: don't block i_writecount during exec"
2024-11-27 12:51:30 +01:00
fcntl.c
fs: require inode_owner_or_capable for F_SET_RW_HINT
2024-11-25 15:16:49 +01:00
fhandle.c
vfs-6.13.exportfs
2024-11-26 13:26:15 -08:00
file_table.c
Merge branch 'work.fdtable' into vfs.file
2024-10-30 09:58:02 +01:00
file.c
vfs-6.13.file
2024-11-18 10:30:29 -08:00
filesystems.c
…
fs_context.c
…
fs_parser.c
vfs-6.13.ovl
2024-11-18 10:45:06 -08:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
Merge patch series "two little writeback cleanups v2"
2024-11-13 14:08:34 +01:00
fsopen.c
fdget(), more trivial conversions
2024-11-03 01:28:06 -05:00
init.c
…
inode.c
- The series "zram: optimal post-processing target selection" from
2024-11-23 09:58:07 -08:00
internal.h
sanitize struct filename and lookup flags handling in statx
2024-11-18 14:54:10 -08:00
ioctl.c
fdget(), trivial conversions
2024-11-03 01:28:06 -05:00
Kconfig
reiserfs: The last commit
2024-10-21 16:29:38 +02:00
Kconfig.binfmt
exec: Add KUnit test for bprm_stack_limits()
2024-06-19 13:13:55 -07:00
kernel_read_file.c
fdget(), trivial conversions
2024-11-03 01:28:06 -05:00
libfs.c
sanitize struct filename and lookup flags handling in statx
2024-11-18 14:54:10 -08:00
locks.c
fdget(), more trivial conversions
2024-11-03 01:28:06 -05:00
Makefile
reiserfs: The last commit
2024-10-21 16:29:38 +02:00
mbcache.c
…
mnt_idmapping.c
fuse update for 6.12
2024-09-24 15:29:42 -07:00
mount.h
vfs-6.12.mount
2024-09-16 11:15:26 +02:00
mpage.c
fs/writeback: convert wbc_account_cgroup_owner to take a folio
2024-10-28 13:26:54 +01:00
namei.c
sanitize xattr and io_uring interactions with it,
2024-11-18 12:44:25 -08:00
namespace.c
statmount: fix security option retrieval
2024-11-21 09:35:31 +01:00
nsfs.c
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
open.c
\n
2024-11-21 09:55:45 -08:00
pidfs.c
pidfd: add ioctl to retrieve pid info
2024-10-24 13:54:51 +02:00
pipe.c
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
acl: Annotate struct posix_acl with __counted_by()
2024-10-22 11:16:59 +02:00
proc_namespace.c
fs: rename show_mnt_opts -> show_vfsmnt_opts
2024-06-28 14:36:43 +02:00
read_write.c
the bulk of struct fd memory safety stuff
2024-11-18 12:24:06 -08:00
readdir.c
introduce "fd_pos" class, convert fdget_pos() users to it.
2024-11-03 01:28:06 -05:00
remap_range.c
convert vfs_dedupe_file_range().
2024-11-03 01:28:07 -05:00
select.c
do_pollfd(): convert to CLASS(fd)
2024-11-03 01:28:07 -05:00
seq_file.c
fs: Reorganize kerneldoc parameter names
2024-10-22 11:16:57 +02:00
signalfd.c
fdget(), trivial conversions
2024-11-03 01:28:06 -05:00
splice.c
fdget(), more trivial conversions
2024-11-03 01:28:06 -05:00
stack.c
…
stat.c
sanitize struct filename and lookup flags handling in statx
2024-11-18 14:54:10 -08:00
statfs.c
fdget_raw() users: switch to CLASS(fd_raw)
2024-11-03 01:28:06 -05:00
super.c
fs/super.c: introduce get_tree_bdev_flags()
2024-10-21 14:30:26 +02:00
sync.c
fdget(), trivial conversions
2024-11-03 01:28:06 -05:00
sysctls.c
…
timerfd.c
A rather large update for timekeeping and timers:
2024-11-19 16:35:06 -08:00
userfaultfd.c
fork: do not invoke uffd on fork if error occurs
2024-10-28 21:40:38 -07:00
utimes.c
fdget(), more trivial conversions
2024-11-03 01:28:06 -05:00
xattr.c
xattr: remove redundant check on variable err
2024-11-06 13:00:01 -05:00