LCOS-Watchdog / Ver. 9.20.0615 / Task name = HTTP-Worker

[findler]

Watchdog - Grund unbekannt

#
| LANCOM 1781VA (over ISDN)
| Ver. 9.20.0615 / 09.06.2016
| SN. 4002790318100107
| Copyright (c) LANCOM Systems

lc1781va, Connection No.: 002 (LAN)


root@lc1781va:/
> show boot
Boot log (8192 Bytes):
p+czerb7vBmn5wAYXsSgBX2Do
AAAAAAAAAAEGafnAAhNlAAYXsVhAAEAkAAAAAAAAAAAAAAAAAAAAAAIKJUAAAAAAAAAAAAAAAAAAACvM
AAAAAAAAAAACBHZYAAAAAQgR1SABsL8YBheyhAAAAAAGbDoABhexsAFga1QDAAA3BhexuAYXsZABYFaw
BhSYxAYUmMQGF7GYAHmGUN6tvu8GFJj8AAAAAAAAAAAAAAAAAAAANwYXsfgAeMH0IAAgIgAAAAAAAAAA
AAAAAAAAAAIAAAAAAAAAAAIEc8gAAArzAbC/GAAAAAACBHVIAgR2WAAAAAAAAAABBmw6AAYXs1gAeVYQ
AAAAAAAAAAAAAAAAAAAAAAIKJUAAAAAAAAAAAAFgXYwBwVKIAc74WAAAsjAAAAAAAA0AAAAAAA0CAADI
AAAAAAAAAAAAAAAAAABSiAGwvxgAAAAAAAAAAAAAsjgAAAAAAs+2lAAAAAAAAAAAAAAAAAGzDgAA99k4
D///xAITZSQBzvhYMjI3ACAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg
ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgWAAAAAAAAAAC
AAAAAAIMWWgAAAAAAAQAOAYXsxABYFawBhSYxEAAQCgAAAAAAAAAAAAAAAAAAAAAAAAAAAIMAAAB/jL4
AgRwMAYXs3AAAAAAAAAAAAGy1sgCDFX8AgR2WAAAAAACFHY8Bmw6AAIEc8gGF8KwAHDJfN6tvu/erb7v
3q2+796tvu9NYW5hZ2VtZW50AO/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v
3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v
3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v
3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v
3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v3q2+796tvu/erb7v
3q2+7w==
largest available memory block: 160000384 bytes


DEVICE: LANCOM 1781VA (over ISDN)
HW-RELEASE: B
VERSION: 9.20.0615 / 09.06.2016

****

06/15/2016 19:24:26 System boot after LCOS-Watchdog

DEVICE: LANCOM 1781VA (over ISDN)
HW-RELEASE: B
VERSION: 9.20.0615 / 09.06.2016

****

06/15/2016 19:24:47 LCOS-Watchdog
Task name = HTTP-Worker Type=PPC: DSI (protection error on load access @0xdeadb eef)
Code=0x00000002 Thread=05459aa8 Task=05459aa0 Nest=0x00000000

R00=0x01605d8c SP =0x0545d8f8 R02=0x01e1e000 R03=0x00000073
R04=0x00000003 R05=0x00001ed3 R06=0x0542797c R07=0x00000000
R08=0x00000003 R09=0x00000000 R10=0xdeadbeef R11=0x05427944
R12=0x40004024 R13=0x020cbec0 R14=0x00000000 R15=0x01d9714e
R16=0x00000002 R17=0x00000000 R18=0x020a2540 R19=0x0545d92a
R20=0x00000000 R21=0x01cb0c78 R22=0x00000001 R23=0x01c15288
R24=0x00000002 R25=0x01cb0b94 R26=0x0545d9d8 R27=0xcccccccd
R28=0x01cb0d54 R29=0x0545d9e4 R30=0x00000001 R31=0x00000000

CR =0x20004028 XER =0x20000000 LR =0x01605d8c CTR =0x01606450
ESR =0x00000000 DEAR=0xdeadbeef HID0=0x80804000 HID1=0x44023080
MCSR=0x00000000 PID0=0x00000002 PID1=0x00000000 PID2=0x00000000
MAS0=0x00010002 MAS1=0x80000100 MAS2=0xdeadb000 MAS3=0x00000000
MAS4=0x00030100 MAS6=0x00020000 MAS7=0x00000000 MCTR=0x00000000
SPR0=0x05427944 SPR1=0x00000003 SPR2=0x00001ed3 SPR3=0x00200000
SPR4=0x00000000 SPR5=0x01e1e000 SPR6=0x00000073 SPR7=0x00000000

MCAR =0x0:00000000
SRR0(PC) =0x01606474
SRR1(MSR)=0x00029200

possible error location: [BT] 015cbb8c 00f749cc 015cbed4 01605d8c

exception, additional backtrace: [BT] 01606b54 0078c1f4 00795610 0070c97c 00733 c80 015e25ac 00f7e868

Stack dump (1024 bytes):
Adr:= 0545d8f8
Len:= 00000400
0545D8F8: 05 45 D9 D0 01 60 5D 8C 01 C1 52 88 DE AD BE EF | .E...`]. ..R.....
0545D908: 00 00 F6 60 00 00 00 00 00 00 E8 E4 00 00 00 00 | ...`.... ........
0545D918: 02 45 D9 50 00 00 00 00 00 00 00 00 00 00 00 00 | .E.P.... ........
0545D928: 00 00 00 01 01 C1 52 88 00 00 EA 5F 00 00 00 01 | ......R. ..._....
0545D938: 00 00 00 01 02 13 65 00 00 00 00 0A 01 E1 3A 48 | ......e. ......:H
0545D948: 05 32 35 35 00 5C F6 60 00 02 92 00 01 5F 5F 1C | .255.\.` .....__.
0545D958: 00 00 00 01 06 5B 00 6C DE AD BE EF 06 5B 00 60 | .....[.l .....[.`
0545D968: 05 45 D9 88 01 5F 60 E8 00 00 00 00 00 00 00 01 | .E..._`. ........
0545D978: 06 5B 00 60 02 13 65 00 05 45 D9 B8 40 00 40 24 | .[.`..e. .E..@.@$
0545D988: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
0545D998: 02 0A 25 40 00 00 00 00 00 00 00 00 00 00 00 00 | ..%@.... ........
0545D9A8: 00 00 2B CC 00 00 00 00 00 00 00 00 02 04 76 58 | ..+..... ......vX
0545D9B8: 00 00 00 01 08 11 D5 20 01 B0 BF 18 05 45 DA E4 | ....... .....E..
0545D9C8: 00 00 00 00 06 64 76 20 05 45 DA 10 01 60 6B 54 | .....dv .E...`kT
0545D9D8: 03 00 00 37 05 45 DA 18 05 45 D9 F0 01 60 56 B0 | ...7.E.. .E...`V.
0545D9E8: 05 42 79 44 05 42 79 44 05 45 D9 F8 00 79 86 50 | .ByD.ByD .E...y.P
0545D9F8: DE AD BE EF 05 42 79 7C 00 00 00 00 00 00 00 00 | .....By| ........
0545DA08: 00 00 00 00 00 00 00 37 05 45 DA 58 00 78 C1 F4 | .......7 .E.X.x..
0545DA18: 20 00 20 22 00 00 00 00 00 00 00 00 00 00 00 00 | . ".... ........
0545DA28: 00 00 00 02 00 00 00 00 00 00 00 00 02 04 73 C8 | ........ ......s.
0545DA38: 00 00 0A F3 01 B0 BF 18 00 00 00 00 02 04 75 48 | ........ ......uH
0545DA48: 02 04 76 58 00 00 00 00 00 00 00 01 06 64 76 20 | ..vX.... .....dv
0545DA58: 05 45 DB B8 00 79 56 10 00 00 00 00 00 00 00 00 | .E...yV. ........
0545DA68: 00 00 00 00 00 00 00 00 02 0A 25 40 00 00 00 00 | ........ ..%@....
0545DA78: 00 00 00 00 01 60 5D 8C 01 C1 52 88 01 CE F8 58 | .....`]. ..R....X
0545DA88: 00 00 DA 90 00 00 00 00 00 0D 00 00 00 00 00 0D | ........ ........
0545DA98: 02 00 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
0545DAA8: 00 00 52 88 01 B0 BF 18 00 00 00 00 00 00 00 00 | ..R..... ........
0545DAB8: 00 00 DA 38 00 00 00 00 02 CF B6 94 00 00 00 00 | ...8.... ........
0545DAC8: 00 00 00 00 00 00 00 00 01 B3 0E 00 00 F7 D9 38 | ........ .......8
0545DAD8: 0F FF FF C4 02 13 65 24 01 CE F8 58 32 32 37 00 | ......e$ ...X227.
0545DAE8: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
0545DAF8: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
0545DB08: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
0545DB18: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
0545DB28: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
0545DB38: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 58 | X
0545DB48: 00 00 00 00 00 00 00 02 00 00 00 00 02 0C 59 68 | ........ ......Yh
0545DB58: 00 00 00 00 00 04 00 98 05 45 DB 70 01 60 56 B0 | ........ .E.p.`V.
0545DB68: 05 42 79 44 40 00 40 28 00 00 00 00 00 00 00 00 | .ByD@.@( ........
0545DB78: 00 00 00 00 00 00 00 00 00 00 00 00 02 0C 00 00 | ........ ........
0545DB88: 01 FE 32 F8 02 04 70 30 05 45 DB D0 00 00 00 00 | ..2...p0 .E......
0545DB98: 00 00 00 00 01 B2 D6 C8 02 0C 55 FC 02 04 76 58 | ........ ..U...vX
0545DBA8: 00 00 00 00 02 14 76 3C 06 64 76 20 02 04 73 C8 | ......v< .dv ..s.
0545DBB8: 05 45 EB 10 00 70 C9 7C DE AD BE EF DE AD BE EF | .E...p.| ........
0545DBC8: DE AD BE EF DE AD BE EF 4D 61 6E 61 67 65 6D 65 | ........ Manageme
0545DBD8: 6E 74 00 EF DE AD BE EF DE AD BE EF DE AD BE EF | nt...... ........
0545DBE8: DE AD BE EF DE AD BE EF DE AD BE EF DE AD BE EF | ........ ........
0545DBF8: DE AD BE EF DE AD BE EF DE AD BE EF DE AD BE EF | ........ ........
0545DC08: DE AD BE EF DE AD BE EF DE AD BE EF DE AD BE EF | ........ ........
0545DC18: DE AD BE EF DE AD BE EF FF AD BE EF DE AD BE EF | ........ ........
0545DC28: DE AD BE EF DE AD BE EF DE AD BE EF DE AD BE EF | ........ ........
0545DC38: DE AD BE EF DE AD BE EF 05 45 DD 60 05 45 D3 E0 | ........ .E.`.E..
0545DC48: 00 00 00 09 03 00 37 68 00 00 00 00 01 B2 7A A0 | ......7h ......z.
0545DC58: 00 38 49 49 00 00 00 00 01 CA BF 80 00 00 00 05 | .8II.... ........
0545DC68: 00 00 00 00 DE AD BE EF DE AD BE EF DE AD BE EF | ........ ........
0545DC78: DE AD BE EF DE AD BE EF 01 D8 C6 B0 05 45 E6 00 | ........ .....E..
0545DC88: 05 45 D3 00 05 21 51 5C 00 00 00 00 00 00 00 00 | .E...!Q\ ........
0545DC98: 51 42 BE EF 00 00 00 00 00 00 00 00 00 00 00 00 | QB...... ........
0545DCA8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BE EF | ........ ........
0545DCB8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
0545DCC8: 00 00 00 00 00 00 00 00 00 5B 95 D0 00 00 00 00 | ........ .[......
0545DCD8: 00 00 00 00 00 00 00 00 00 00 00 00 FF FF FF FF | ........ ........
0545DCE8: 05 45 DD A0 00 00 00 00 00 00 00 00 00 00 00 00 | .E...... ........
largest available memory block: 160770496 bytes


DEVICE: LANCOM 1781VA (over ISDN)
HW-RELEASE: B
VERSION: 9.20.0615 / 09.06.2016

****

06/15/2016 19:25:02 System boot after LCOS-Watchdog

DEVICE: LANCOM 1781VA (over ISDN)
HW-RELEASE: B
VERSION: 9.20.0615 / 09.06.2016

****

06/15/2016 19:25:22 LCOS-Watchdog
Task name = HTTP-Worker Type=PPC: DSI (protection error on load access @0xdeadb eef)
Code=0x00000002 Thread=04e7b4a8 Task=04e7b4a0 Nest=0x00000000

R00=0x01605d8c SP =0x04e7f2f8 R02=0x01e1e000 R03=0x00000073
R04=0x00000003 R05=0x00001ed3 R06=0x04e490dc R07=0x00000000
R08=0x00000003 R09=0x00000000 R10=0xdeadbeef R11=0x04e490a4
R12=0x40004024 R13=0x020cbec0 R14=0x00000000 R15=0x01d9714e
R16=0x00000002 R17=0x00000000 R18=0x020a2540 R19=0x04e7f32a
R20=0x00000000 R21=0x01cb0c78 R22=0x00000001 R23=0x01c15288
R24=0x00000002 R25=0x01cb0b94 R26=0x04e7f3d8 R27=0xcccccccd
R28=0x01cb0d54 R29=0x04e7f3e4 R30=0x00000001 R31=0x00000000

CR =0x20004028 XER =0x20000000 LR =0x01605d8c CTR =0x01606450
ESR =0x00000000 DEAR=0xdeadbeef HID0=0x80804000 HID1=0x44023080
MCSR=0x00000000 PID0=0x00000002 PID1=0x00000000 PID2=0x00000000
MAS0=0x00010002 MAS1=0x80000100 MAS2=0xdeadb000 MAS3=0x00000000
MAS4=0x00030100 MAS6=0x00020000 MAS7=0x00000000 MCTR=0x00000000
SPR0=0x04e490a4 SPR1=0x00000003 SPR2=0x00001ed3 SPR3=0x00200000
SPR4=0x00000000 SPR5=0x01e1e000 SPR6=0x00000073 SPR7=0x00000000

MCAR =0x0:00000000
SRR0(PC) =0x01606474
SRR1(MSR)=0x00029200

possible error location: [BT] 015cbb8c 00f749cc 015cbed4 01605d8c

exception, additional backtrace: [BT] 01606b54 0078c1f4 00795610 0070c97c 00733 c80 015e25ac 00f7e868

Stack dump (1024 bytes):
Adr:= 04e7f2f8
Len:= 00000400
04E7F2F8: 04 E7 F3 D0 01 60 5D 8C 01 C1 52 88 DE AD BE EF | .....`]. ..R.....
04E7F308: 00 00 E6 E0 00 00 00 00 00 00 E8 E4 00 00 00 00 | ........ ........
04E7F318: 02 E7 F3 50 00 00 00 00 00 00 00 00 00 00 00 00 | ...P.... ........
04E7F328: 00 00 00 01 01 C1 52 88 00 00 EA 5F 00 00 00 01 | ......R. ..._....
04E7F338: 00 00 00 01 02 13 65 00 00 00 00 0A 01 E1 3A 48 | ......e. ......:H
04E7F348: 04 32 35 35 00 5B E6 E0 00 02 92 00 01 5F 5F 1C | .255.[.. .....__.
04E7F358: 00 00 00 01 02 17 EE 2C DE AD BE EF 02 17 EE 20 | ......., .......
04E7F368: 04 E7 F3 88 01 5F 60 E8 00 00 00 00 00 00 00 01 | ....._`. ........
04E7F378: 02 17 EE 20 02 13 65 00 04 E7 F3 B8 40 00 40 24 | ... ..e. ....@.@$
04E7F388: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F398: 02 0A 25 40 00 00 00 00 00 00 00 00 00 00 00 00 | ..%@.... ........
04E7F3A8: 00 00 2B CC 00 00 00 00 00 00 00 00 02 04 76 58 | ..+..... ......vX
04E7F3B8: 00 00 00 01 08 11 D5 20 01 B0 BF 18 04 E7 F4 E4 | ....... ........
04E7F3C8: 00 00 00 00 06 63 82 60 04 E7 F4 10 01 60 6B 54 | .....c.` .....`kT
04E7F3D8: 03 00 00 37 04 E7 F4 18 04 E7 F3 F0 01 60 56 B0 | ...7.... .....`V.
04E7F3E8: 04 E4 90 A4 04 E4 90 A4 04 E7 F3 F8 00 79 86 50 | ........ .....y.P
04E7F3F8: DE AD BE EF 04 E4 90 DC 00 00 00 00 00 00 00 00 | ........ ........
04E7F408: 00 00 00 00 00 00 00 37 04 E7 F4 58 00 78 C1 F4 | .......7 ...X.x..
04E7F418: 20 00 20 22 00 00 00 00 00 00 00 00 00 00 00 00 | . ".... ........
04E7F428: 00 00 00 02 00 00 00 00 00 00 00 00 02 04 73 C8 | ........ ......s.
04E7F438: 00 00 0A F3 01 B0 BF 18 00 00 00 00 02 04 75 48 | ........ ......uH
04E7F448: 02 04 76 58 00 00 00 00 00 00 00 01 06 63 82 60 | ..vX.... .....c.`
04E7F458: 04 E7 F5 B8 00 79 56 10 00 00 00 00 00 00 00 00 | .....yV. ........
04E7F468: 00 00 00 00 00 00 00 00 02 0A 25 40 00 00 00 00 | ........ ..%@....
04E7F478: 00 00 00 00 01 60 5D 8C 01 C1 52 88 01 CE F8 58 | .....`]. ..R....X
04E7F488: 00 00 F4 90 00 00 00 00 00 0D 00 00 00 00 00 0D | ........ ........
04E7F498: 02 00 00 C8 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F4A8: 00 00 52 88 01 B0 BF 18 00 00 00 00 00 00 00 00 | ..R..... ........
04E7F4B8: 00 00 F4 38 00 00 00 00 02 CF B6 94 00 00 00 00 | ...8.... ........
04E7F4C8: 00 00 00 00 00 00 00 00 01 B3 0E 00 00 F7 D9 38 | ........ .......8
04E7F4D8: 0F FF FF C4 02 13 65 24 01 CE F8 58 32 32 37 00 | ......e$ ...X227.
04E7F4E8: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
04E7F4F8: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
04E7F508: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
04E7F518: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
04E7F528: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |
04E7F538: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 58 | X
04E7F548: 00 00 00 00 00 00 00 02 00 00 00 00 02 0C 59 68 | ........ ......Yh
04E7F558: 00 00 00 00 00 04 00 98 04 E7 F5 70 01 60 56 B0 | ........ ...p.`V.
04E7F568: 04 E4 90 A4 40 00 40 28 00 00 00 00 00 00 00 00 | ....@.@( ........
04E7F578: 00 00 00 00 00 00 00 00 00 00 00 00 02 0C 00 00 | ........ ........
04E7F588: 01 FE 32 F8 02 04 70 30 04 E7 F5 D0 00 00 00 00 | ..2...p0 ........
04E7F598: 00 00 00 00 01 B2 D6 C8 02 0C 55 FC 02 04 76 58 | ........ ..U...vX
04E7F5A8: 00 00 00 00 02 14 76 3C 06 63 82 60 02 04 73 C8 | ......v< .c.`..s.
04E7F5B8: 04 E8 05 10 00 70 C9 7C 00 00 00 00 00 00 00 00 | .....p.| ........
04E7F5C8: 00 00 00 00 00 00 00 00 4D 61 6E 61 67 65 6D 65 | ........ Manageme
04E7F5D8: 6E 74 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | nt...... ........
04E7F5E8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F5F8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F608: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F618: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F628: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F638: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F648: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F658: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F668: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F678: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F688: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F698: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F6A8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F6B8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F6C8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F6D8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
04E7F6E8: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........ ........
largest available memory block: 160816256 bytes


DEVICE: LANCOM 1781VA (over ISDN)
HW-RELEASE: B
VERSION: 9.20.0615 / 09.06.2016

****

06/15/2016 19:25:37 System boot after LCOS-Watchdog

DEVICE: LANCOM 1781VA (over ISDN)
HW-RELEASE: B
VERSION: 9.20.0615 / 09.06.2016

[LoUiS]

Danke fuers Feedback!
Ich habe die Abstuerze als Bug eingetragen.

Edit: Hast Du evtl. Infos was in der Konfiguration (WEBconfig) gerade editiert wurde, als der Absturz aufgetreten ist?

Ciao
LoUiS

[findler]

Aus der Web-Interface-Anzeige "Management/Admin/Weitere Administratoren" ( https://<IPv4>/config2/0/2/?table_val004_display ) und klick auf "Management/Allgemein" ( https://<IPv4>/config2/0/0 ).

[findler]

Problem ist noch vorhanden in 9.20.0647RU1.

[findler]

gelöst in 9.20.0683RU2