loopbacks...

add the loopbacks, then the network statement
netw 10.1.x.0 0.0.0.255 area 0 in router config mode

this is incorrect... loopbacks should be configured as host routes... note below

r2(config-if)#do sh ip ospf int lo2
Loopback2 is up, line protocol is up
  Internet Address 10.1.2.1/24, Area 0
  Process ID 1, Router ID 10.1.2.1, Network Type LOOPBACK, Cost: 1
  Loopback interface is treated as a stub Host

r2(config-if)#ip ospf netw point-to-p
r2(config-if)#do sh ip ospf int lo2
Loopback2 is up, line protocol is up
  Internet Address 10.1.2.1/24, Area 0
  Process ID 1, Router ID 10.1.2.1, Network Type POINT_TO_POINT, Cost: 1
  Transmit Delay is 1 sec, State POINT_TO_POINT
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    oob-resync timeout 40
  Supports Link-local Signaling (LLS)
  Cisco NSF helper support enabled
  IETF NSF helper support enabled
  Index 3/3, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 0, maximum is 0
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 0, Adjacent neighbor count is 0
  Suppress hello for 0 neighbor(s)
r2(config-if)#

or simply configure them as host routes in the first place...