Merge tag 'v6.18-rc3-smb-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:

 - Improve check for malformed payload

 - Fix free transport smbdirect potential race

 - Fix potential race in credit allocation during smbdirect negotiation

* tag 'v6.18-rc3-smb-server-fixes' of git://git.samba.org/ksmbd:
  smb: server: let smb_direct_cm_handler() call ib_drain_qp() after smb_direct_disconnect_rdma_work()
  smb: server: call smb_direct_post_recv_credits() when the negotiation is done
  ksmbd: transport_ipc: validate payload size before reading handle