r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x3}, 0x0, 0x0, 0xfffffffffffffffc)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='cifs.idmap\x00', 0x0)