[$] A rough start for ksmbd

Among the many new features pulled into the mainline during the 5.15 mergewindow is the ksmbdnetwork filesystem server. Ksmbd implements the SMB protocol(also known as CIFS, though that name has gone out of favor) that isheavily used in the Windows world. The creation of an in-kernel SMB serveris a bit surprising, given that Linux has benefited greatly from theuser-space Samba solution sinceshortly after thebeginning. There are reasons for this move but, in the short term atleast, they risk being overshadowed by a worrisome stream ofsecurity-related problems in ksmbd.