kernel.git/fs/smb/server/vfs_cache.c, branch linux-6.7.y

ksmbd: send v2 lease break notification for directory

2023-12-08T16:11:33Z

If client send different parent key, different client guid, or there is no parent lease key flags in create context v2 lease, ksmbd send lease break to client. Signed-off-by: Namjae Jeon Signed-off-by: Steve French

ksmbd: separately allocate ci per dentry

2023-11-24T02:50:45Z

xfstests generic/002 test fail when enabling smb2 leases feature. This test create hard link file, but removeal failed. ci has a file open count to count file open through the smb client, but in the case of hard link files, The allocation of ci per inode cause incorrectly open count for file deletion. This patch allocate ci per dentry to counts open counts for hard link. Signed-off-by: Namjae Jeon Signed-off-by: Steve French

ksmbd: fix Null pointer dereferences in ksmbd_update_fstate()

2023-10-13T03:44:09Z

Coverity Scan report the following one. This report is a false alarm. Because fp is never NULL when rc is zero. This patch add null check for fp in ksmbd_update_fstate to make alarm silence. *** CID 1568583: Null pointer dereferences (FORWARD_NULL) /fs/smb/server/smb2pdu.c: 3408 in smb2_open() 3402 path_put(&path); 3403 path_put(&parent_path); 3404 } 3405 ksmbd_revert_fsids(work); 3406 err_out1: 3407 if (!rc) { >>> CID 1568583: Null pointer dereferences (FORWARD_NULL) >>> Passing null pointer "fp" to "ksmbd_update_fstate", which dereferences it. 3408 ksmbd_update_fstate(&work->sess->file_table, fp, FP_INITED); 3409 rc = ksmbd_iov_pin_rsp(work, (void *)rsp, iov_len); 3410 } 3411 if (rc) { 3412 if (rc == -EINVAL) 3413 rsp->hdr.Status = STATUS_INVALID_PARAMETER; Fixes: e2b76ab8b5c9 ("ksmbd: add support for read compound") Reported-by: Coverity Scan Signed-off-by: Namjae Jeon Signed-off-by: Steve French

ksmbd: not allow to open file if delelete on close bit is set

2023-10-13T03:43:52Z

Cthon test fail with the following error. check for proper open/unlink operation nfsjunk files before unlink: -rwxr-xr-x 1 root root 0 9월 25 11:03 ./nfs2y8Jm9 ./nfs2y8Jm9 open; unlink ret = 0 nfsjunk files after unlink: -rwxr-xr-x 1 root root 0 9월 25 11:03 ./nfs2y8Jm9 data compare ok nfsjunk files after close: ls: cannot access './nfs2y8Jm9': No such file or directory special tests failed Cthon expect to second unlink failure when file is already unlinked. ksmbd can not allow to open file if flags of ksmbd inode is set with S_DEL_ON_CLS flags. Cc: stable@vger.kernel.org Signed-off-by: Namjae Jeon Signed-off-by: Steve French

ksmbd: fix race condition with fp

2023-10-05T01:21:48Z

fp can used in each command. If smb2_close command is coming at the same time, UAF issue can happen by race condition. Time + Thread A | Thread B1 B2 .... B5 smb2_open | smb2_close | __open_id | insert fp to file_table | | | atomic_dec_and_test(&fp->refcount) | if fp->refcount == 0, free fp by kfree. // UAF! | use fp | + This patch add f_state not to use freed fp is used and not to free fp in use. Reported-by: luosili Signed-off-by: Namjae Jeon Signed-off-by: Steve French

ksmbd: add mnt_want_write to ksmbd vfs functions

2023-06-17T02:04:19Z

ksmbd is doing write access using vfs helpers. There are the cases that mnt_want_write() is not called in vfs helper. This patch add missing mnt_want_write() to ksmbd vfs functions. Cc: stable@vger.kernel.org Cc: Amir Goldstein Signed-off-by: Namjae Jeon Signed-off-by: Steve French

smb: move client and server files to common directory fs/smb

2023-05-24T21:29:21Z

Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko and helper modules) to new fs/smb subdirectory: fs/cifs --> fs/smb/client fs/ksmbd --> fs/smb/server fs/smbfs_common --> fs/smb/common Suggested-by: Linus Torvalds Acked-by: Namjae Jeon Signed-off-by: Steve French