debian latest kernel source compilation error

[ziojacky]

CC [M] fs/ksmbd/vfs.o
fs/ksmbd/vfs.c:2666:20: error: redefinition of ‘is_dot_dotdot’
2666 | static inline bool is_dot_dotdot(const char *name, size_t len)
| ^~~~~~~~~~~~~
In file included from fs/ksmbd/vfs.c:8:
./include/linux/fs.h:3151:20: note: previous definition of ‘is_dot_dotdot’ with type ‘bool(const char *, size_t)’ {aka ‘_Bool(const char *, long unsigned int)’}
3151 | static inline bool is_dot_dotdot(const char *name, size_t len)