When shutting down the server in cifs_put_tcp_session(), cifsd thread
might be reconnecting to multiple DFS targets before it realizes it
should exit the loop, so @server->hostname can't be freed as long as
cifsd thread isn't done.  Otherwise the following can happen:

  RIP: 0010:__slab_free+0x223/0x3c0
  Code: 5e 41 5f c3 cc cc cc cc 4c 89 de 4c 89 cf 44 89 44 24 08 4c 89
  1c 24 e8 fb cf 8e 00 44 8b 44 24 08 4c 8b 1c 24 e9 5f fe ff ff <0f>
  0b 41 f7 45 08 00 0d 21 00 0f 85 2d ff ff ff e9 1f ff ff ff 80
  RSP: 0018:ffffb26180dbfd08 EFLAGS: 00010246
  RAX: ffff8ea34728e510 RBX: ffff8ea34728e500 RCX: 0000000000800068
  RDX: 0000000000800068 RSI: 0000000000000000 RDI: ffff8ea340042400
  RBP: ffffe112041ca380 R08: 0000000000000001 R09: 0000000000000000
  R10: 6170732e31303000 R11: 70726f632e786563 R12: ffff8ea34728e500
  R13: ffff8ea340042400 R14: ffff8ea34728e500 R15: 0000000000800068
  FS: 0000000000000000(0000) GS:ffff8ea66fd80000(0000)
  000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007ffc25376080 CR3: 000000012a2ba001 CR4:
  PKRU: 55555554
  Call Trace:
   <TASK>
   ? show_trace_log_lvl+0x1c4/0x2df
   ? show_trace_log_lvl+0x1c4/0x2df
   ? __reconnect_target_unlocked+0x3e/0x160 [cifs]
   ? __die_body.cold+0x8/0xd
   ? die+0x2b/0x50
   ? do_trap+0xce/0x120
   ? __slab_free+0x223/0x3c0
   ? do_error_trap+0x65/0x80
   ? __slab_free+0x223/0x3c0
   ? exc_invalid_op+0x4e/0x70
   ? __slab_free+0x223/0x3c0
   ? asm_exc_invalid_op+0x16/0x20
   ? __slab_free+0x223/0x3c0
   ? extract_hostname+0x5c/0xa0 [cifs]
   ? extract_hostname+0x5c/0xa0 [cifs]
   ? __kmalloc+0x4b/0x140
   __reconnect_target_unlocked+0x3e/0x160 [cifs]
   reconnect_dfs_server+0x145/0x430 [cifs]
   cifs_handle_standard+0x1ad/0x1d0 [cifs]
   cifs_demultiplex_thread+0x592/0x730 [cifs]
   ? __pfx_cifs_demultiplex_thread+0x10/0x10 [cifs]
   kthread+0xdd/0x100
   ? __pfx_kthread+0x10/0x10
   ret_from_fork+0x29/0x50
   </TASK>

Fixes: 7be3248f3139 ("cifs: To match file servers, make sure the server hostname matches")
Reported-by: Jay Shin <jaeshin@redhat.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

SMB1 shares the mount and remount code paths with SMB2/3 and already
supports password rotation in some scenarios. This patch extends the
password rotation support to SMB1 reconnects as well.

Cc: stable@vger.kernel.org
Signed-off-by: Meetakshi Setiya <msetiya@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Pull smb client fix from Steve French:

 - fix unneeded session setup retry due to stale password e.g. for DFS
   automounts

* tag '6.13-rc6-SMB3-client-fix' of git://git.samba.org/sfrench/cifs-2.6:
  smb: client: sync the root session and superblock context passwords before automounting

In some cases, when password2 becomes the working password, the
client swaps the two password fields in the root session struct, but
not in the smb3_fs_context struct in cifs_sb. DFS automounts inherit
fs context from their parent mounts. Therefore, they might end up
getting the passwords in the stale order.
The automount should succeed, because the mount function will end up
retrying with the actual password anyway. But to reduce these
unnecessary session setup retries for automounts, we can sync the
parent context's passwords with the root session's passwords before
duplicating it to the child's fs context.

Cc: stable@vger.kernel.org
Signed-off-by: Meetakshi Setiya <msetiya@microsoft.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Pull smb server fixes from Steve French:
 "Four ksmbd server fixes, most also for stable:

   - fix for reporting special file type more accurately when POSIX
     extensions negotiated

   - minor cleanup

   - fix possible incorrect creation path when dirname is not present.
     In some cases, Windows apps create files without checking if they
     exist.

   - fix potential NULL pointer dereference sending interim response"

* tag '6.13-rc6-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: Implement new SMB3 POSIX type
  ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked
  ksmbd: Remove unneeded if check in ksmbd_rdma_capable_netdev()
  ksmbd: fix a missing return value check bug

As SMB3 posix extension specification, Give posix file type to posix
mode.

https://www.samba.org/~slow/SMB3_POSIX/fscc_posix_extensions.html#posix-file-type-definition

Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

When `ksmbd_vfs_kern_path_locked` met an error and it is not the last
entry, it will exit without restoring changed path buffer. But later this
buffer may be used as the filename for creation.

Fixes: c5a709f08d40 ("ksmbd: handle caseless file creation")
Signed-off-by: He Wang <xw897002528@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Pull vfs fixes from Christian Brauner:

 - Relax assertions on failure to encode file handles

   The ->encode_fh() method can fail for various reasons. None of them
   warrant a WARN_ON().

 - Fix overlayfs file handle encoding by allowing encoding an fid from
   an inode without an alias

 - Make sure fuse_dir_open() handles FOPEN_KEEP_CACHE. If it's not
   specified fuse needs to invaludate the directory inode page cache

 - Fix qnx6 so it builds with gcc-15

 - Various fixes for netfslib and ceph and nfs filesystems:
     - Ignore silly rename files from afs and nfs when building header
       archives
     - Fix read result collection in netfslib with multiple subrequests
     - Handle ENOMEM for netfslib buffered reads
     - Fix oops in nfs_netfs_init_request()
     - Parse the secctx command immediately in cachefiles
     - Remove a redundant smp_rmb() in netfslib
     - Handle recursion in read retry in netfslib
     - Fix clearing of folio_queue
     - Fix missing cancellation of copy-to_cache when the cache for a
       file is temporarly disabled in netfslib

 - Sanity check the hfs root record

 - Fix zero padding data issues in concurrent write scenarios

 - Fix is_mnt_ns_file() after converting nsfs to path_from_stashed()

 - Fix missing declaration of init_files

 - Increase I/O priority when writing revoke records in jbd2

 - Flush filesystem device before updating tail sequence in jbd2

* tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (23 commits)
  ovl: support encoding fid from inode with no alias
  ovl: pass realinode to ovl_encode_real_fh() instead of realdentry
  fuse: respect FOPEN_KEEP_CACHE on opendir
  netfs: Fix is-caching check in read-retry
  netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled
  netfs: Fix ceph copy to cache on write-begin
  netfs: Work around recursion by abandoning retry if nothing read
  netfs: Fix missing barriers by using clear_and_wake_up_bit()
  netfs: Remove redundant use of smp_rmb()
  cachefiles: Parse the "secctx" immediately
  nfs: Fix oops in nfs_netfs_init_request() when copying to cache
  netfs: Fix enomem handling in buffered reads
  netfs: Fix non-contiguous donation between completed reads
  kheaders: Ignore silly-rename files
  fs: relax assertions on failure to encode file handles
  fs: fix missing declaration of init_files
  fs: fix is_mnt_ns_file()
  iomap: fix zero padding data issue in concurrent append writes
  iomap: pass byte granular end position to iomap_add_to_ioend
  jbd2: flush filesystem device before updating tail sequence
  ...

Remove the unnecessary if check and assign the result directly.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

In the smb2_send_interim_resp(), if ksmbd_alloc_work_struct()
fails to allocate a node, it returns a NULL pointer to the
in_work pointer. This can lead to an illegal memory write of
in_work->response_buf when allocate_interim_rsp_buf() attempts
to perform a kzalloc() on it.

To address this issue, incorporating a check for the return
value of ksmbd_alloc_work_struct() ensures that the function
returns immediately upon allocation failure, thereby preventing
the aforementioned illegal memory access.

Fixes: 041bba4414cd ("ksmbd: fix wrong interim response on compound")
Signed-off-by: Wentao Liang <liangwentao@iscas.ac.cn>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>