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IDProjectCategoryView StatusLast Update
0000033RouterOS v5[All Projects] Generalpublic2013-05-21 08:57
Reporteraeaster 
Assigned To 
PrioritylowSeverityminorReproducibilityalways
Status newResolutionopen 
PlatformmipsbeOSRouterOSOS Version5.18
Summary0000033: Kernel Panic when modifying vlan interface RB450
DescriptionWhen attempting to modify the interface of a vlan using the 'set' command the router kernel panics and reboots.

To work around, I removed the vlan and re-created it with the correct interface.
Steps To ReproduceWith a vlan setup as enabled and bound to a physical interface, change the bound interface to a bridge.

[admin@MikroTik] > interface vlan print
Flags: X - disabled, R - running, S - slave
 # NAME MTU ARP VLAN-ID INTERFACE
 .
 .
 4 R VLAN12 1500 enabled 12 ether5-local

[admin@MikroTik] > interface vlan set interface=br-vlan12 numbers=4
Additional Information[admin@MikroTik] > interface vlan print
Flags: X - disabled, R - running, S - slave
 # NAME MTU ARP VLAN-ID INTERFACE
 .
 .
 4 R VLAN12 1500 enabled 12 ether5-local

[admin@MikroTik] > interface vlan set interface=br-vlan12 numbers=4
[admin@MikroTik] > Unhandled kernel unaligned access[0000001]:
Cpu 0
$ 0 : 00000000 7fbe4340 cfeac000 00000000
$ 4 : 9e6f20e6 00000000 6e6f20e6 c03c0bac
$ 8 : 1000f201 1000001e 00000001 c030cd60
$12 : 00000000 00000807 00000800 00000000
$16 : 6e6f20e6 6e6f202e cfeac308 00000010
$20 : 00000000 cfc17a00 ffffffe4 00000000
$24 : 00000000 00000000
$28 : cfeac000 cfeac248 00010000 c0104ba0
Hi : 00000000
Lo : 00000000
epc : c010f4d4 do_page_fault+0x54/0x300
    Tainted: P
ra : c0104ba0 ret_from_exception+0x0/0xc
Status: 1000f203 KERNEL EXL IE
Cause : 80800010
BadVA : 6e6f20e6
PrId : 00019374 (MIPS 24Kc)
Process ?4{??0Ć`?4|D?4|8 (pid: 0, threadinfo=cfeac000, task=c0380000, tls=c01242dc)
Stack : cfeac3bc c03c5048 c03c4c48 c0339809 00000400 00000020 00000025 0000006c
        c030cca0 00030001 bdffffff ffff7fff 7effffff fdffefdb cfeac3c0 c03c5048
        c03c4c48 cfeac3c4 c03c5048 c0216df0 c033980f f3cfffff 303033ff fefffff7
        ffffffff ffffffff 00000053 ebffffff 00000aff ffffffff 00000001 00003aa3
        00003aa3 c0124fe0 c03c4c48 00000004 cfeac3bc c03397ec c03c4c86 00000041
        ...
Call Trace:
[<c010f4d4>] do_page_fault+0x54/0x300


Code: 0083182b 00a0a021 00c08021 <14600085> 8e3600b8 3c04e000 00c42024 3c03c000 10830080
---[ end trace fd0e4d467c93a9b9 ]---
Kernel panic - not syncing: Fatal exception in interrupt

panicSaver: dumping panic to flash
unaligned data access at c01206e4 account_system_time+0x0/0x1bc
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
unaligned data access at c010f4d8 do_page_fault+0x58/0x300
MikroTik 5.18
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Issue History

Date Modified Username Field Change
2012-07-22 20:50 aeaster New Issue
2013-05-21 08:57 omega-00 OS Mikrotik RouterOS => RouterOS
2013-05-21 08:57 omega-00 Platform Routerboard 450G => mipsbe
2013-05-21 08:57 omega-00 Summary Kernel Panic when modifying vlan interface => Kernel Panic when modifying vlan interface RB450
2013-05-21 08:57 omega-00 Additional Information Updated View Revisions