Tonight I noticed a sudden burst of activity on my console connection of my ER-POE running v1.9.0. Inspection showed the output below. Clearly something went very wrong.
This box has been operational starting with V1.6.0 well over a year ago and has been running 1.9.0 for the last two weeks or so without any problem. It is because of this that I doubt this is a case of bad hardware, or hardware gone bad.
So I am just reporting this for the folks at UBNT and I am up and running again. I'll keep any eye on it a report any further problems.
Other background:
At the time this happened, I was streaming video on my iPad (via wireless, with AP plugged into managed switch, and then to EO-POE). There was not a whole lot of other activity going on. Generally I have been observing around 10% CPU, but I was not watching at the time. ISP is Comcast Business Cable at 50/10 although I doubt this matters.
Console output:
root@star-edge:/var/log# Kernel bug detected[#1]:
CPU: 1 PID: 19291 Comm: ubnt-util Tainted: P O 3.10.20-UBNT #1
task: 800000041767c340 ti: 800000000c0b8000 task.ti: 800000000c0b8000
$ 0 : 0000000000000000 0000000010108ce1 0000000000000000 800000000179327c
$ 4 : 0000000000000001 000000000000668b 0000000000000000 ffffffffc05fe430
$ 8 : 8000000041102000 800000000179327c 0000000000000000 0000000077b77000
$12 : 800000041dbcf948 0000000000000000 0000000000000073 0000000000000008
$16 : 800000041dbcf958 0000000077b69000 800000041dbcf948 0000000077b79000
$20 : 0000000000000000 0000000000000010 800000000c3a6b50 800000041dbcf958
$24 : ffffffffc05fe430 8000000041102000
$28 : 800000000c0b8000 800000000c0bbca0 80000004177d9980 ffffffffc01574cc
Hi : 0000000000000001
Lo : ffffffff9999999a
epc : ffffffffc0157914 mmap_region+0x7e4/0x820
Tainted: P O
ra : ffffffffc01574cc mmap_region+0x39c/0x820
Status: 10108ce3 KX SX UX KERNEL EXL IE
Cause : 00800024
PrId : 000d0601 (Cavium Octeon+)
Modules linked in: ebtable_filter ebtables xt_time xfrm6_mode_tunnel xfrm4_mode_tunnel act_mirred sch_ingress ifb sch_fq_codel authenc xfrm4_mode_transport sha1_generic xt_nat nf_conntrack_netlink xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 l2tp_ppp l2tp_netlink l2tp_core pppox ppp_generic slhc dummy 8021q garp st
p llc cls_u32 sch_sfq sch_htb ipt_MASQUERADE xt_limit xt_policy xt_set ip6t_REJECT xt_multiport nf_conntrack_ipv6 nf_defrag_ipv6 xt_LOG xt_comment xt_conntrack xt_TCPMSS xt_tcpudp ip6table_mangle ip6table_filter ip6table_raw ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 iptable_mangle xt_CT iptable_raw nf_n
at_pptp nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_h323 nf_conntrack_h323 nf_nat_sip nf_conntrack_sip nf_nat_proto_gre nf_nat_tftp nf_nat_ftp nf_nat nf_conntrack_tftp nf_conntrack_ftp nf_conntrack ip_set_hash_net ip_set nfnetlink iptable_filter ip_tables x_tables macvlan cvm_ipsec_kame(O) ipv6 imq cavium_ip_offload(PO) ubnt
_nf_app(PO) tdts(PO) octeon_rng rng_core octeon_ethernet mdio_octeon of_mdio ethernet_mem octeon_common ubnt_platform(PO) libphy
Process ubnt-util (pid: 19291, threadinfo=800000000c0b8000, task=800000041767c340, tls=0000000077558490)
Stack : 0000000000000002 ffffffffc018effc 0000000000077b69 800000041da931f8
0000000000000001 0000000000000000 0000000000000073 0000000077b9c000
0000000077b69000 0000000000000002 0000000000000000 0000000000000802
0000000000000073 0000000000010000 0000000000000010 0000000000000003
0000000074b68e10 ffffffffc0157cac 0000000000000000 800000000c0bbd90
00000000ffffff01 0000000000000000 0000000000000802 0000000000000003
0000000000010000 0000000000000000 0000000000000000 80000004177d99f0
0000000000000000 ffffffffc013cc74 0000000000000000 0000100000000000
0000000000000000 0000000000000802 ffffffffffffffff 0000000000010000
0000000000000003 0000000000000000 0000000000000000 0000000000000000
...
Call Trace:
[<ffffffffc0157914>] mmap_region+0x7e4/0x820
[<ffffffffc0157cac>] do_mmap_pgoff+0x35c/0x480
[<ffffffffc013cc74>] vm_mmap_pgoff+0xbc/0x110
[<ffffffffc0155898>] SyS_mmap_pgoff+0xf8/0x228
[<ffffffffc008d5a0>] handle_sys+0x120/0x144
Code: 03e2b825 08055db0 fc770048 <000c000d> 92e8ad70 1500ff62 0140882d 3c03c059 240506a6
---[ end trace d68c7617063090b8 ]---
[sched_delayed] sched: RT throttling activated
Fatal exception: panic in 5 seconds
Kernel panic - not syncing: Fatal exception
Rebooting in 60 seconds..