Crash log: Is my router dying?

[JT Strickland]

RT-AC86U w/Asuswrt-Merlin 384.15, RT-AC68U aimesh node, diversion, uidivstats, Skynet, scribe, uiscribe, conmon, spdMerlin, scmerlin, nsrum

I've never had anything in my crash log, to my knowledge, until yesterday at about 3 pm CST. Approximately every 20 minutes or so:

Mar 24 08:46:08 RT-AC86U-8F38 kernel: dcd[10047]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007
Mar 24 08:46:08 RT-AC86U-8F38 kernel: pgd = ffffffc00a018000
Mar 24 08:46:08 RT-AC86U-8F38 kernel: [00000000] *pgd=00000000030f6003, *pud=00000000030f6003, *pmd=000000000b1e4003, *pte=0000000000000000
Mar 24 08:46:08 RT-AC86U-8F38 kernel: CPU: 1 PID: 10047 Comm: dcd Tainted: P           O    4.1.27 #2
Mar 24 08:46:08 RT-AC86U-8F38 kernel: Hardware name: Broadcom-v8A (DT)
Mar 24 08:46:08 RT-AC86U-8F38 kernel: task: ffffffc0129d15c0 ti: ffffffc01773c000 task.ti: ffffffc01773c000
Mar 24 08:46:08 RT-AC86U-8F38 kernel: PC is at 0xf7123f44
Mar 24 08:46:08 RT-AC86U-8F38 kernel: LR is at 0x1dc74
Mar 24 08:46:08 RT-AC86U-8F38 kernel: pc : [<00000000f7123f44>] lr : [<000000000001dc74>] pstate: 600e0010
Mar 24 08:46:08 RT-AC86U-8F38 kernel: sp : 00000000ffb0d648
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x12: 000000000009ff08
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x11: 00000000f63ff024 x10: 00000000000a02ac
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x9 : 00000000f63ff988 x8 : 00000000000a0764
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x7 : 00000000f63ff9c0 x6 : 00000000000a075e
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x5 : 0000000000000000 x4 : 00000000f63ff96c
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x3 : 0000000000000000 x2 : 00000000ffb0d624
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x1 : 000000000007c66c x0 : 0000000000000000

The last one was about 6 minutes ago.
Anyone know what is going on? Thanks.

 

[Butterfly Bones]

RT-AC86U w/Asuswrt-Merlin 384.15, RT-AC68U aimesh node, diversion, uidivstats, Skynet, scribe, uiscribe, conmon, spdMerlin, scmerlin, nsrum

I've never had anything in my crash log, to my knowledge, until yesterday at about 3 pm CST. Approximately every 20 minutes or so:

Mar 24 08:46:08 RT-AC86U-8F38 kernel: dcd[10047]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007
Mar 24 08:46:08 RT-AC86U-8F38 kernel: pgd = ffffffc00a018000
Mar 24 08:46:08 RT-AC86U-8F38 kernel: [00000000] *pgd=00000000030f6003, *pud=00000000030f6003, *pmd=000000000b1e4003, *pte=0000000000000000
Mar 24 08:46:08 RT-AC86U-8F38 kernel: CPU: 1 PID: 10047 Comm: dcd Tainted: P           O    4.1.27 #2
Mar 24 08:46:08 RT-AC86U-8F38 kernel: Hardware name: Broadcom-v8A (DT)
Mar 24 08:46:08 RT-AC86U-8F38 kernel: task: ffffffc0129d15c0 ti: ffffffc01773c000 task.ti: ffffffc01773c000
Mar 24 08:46:08 RT-AC86U-8F38 kernel: PC is at 0xf7123f44
Mar 24 08:46:08 RT-AC86U-8F38 kernel: LR is at 0x1dc74
Mar 24 08:46:08 RT-AC86U-8F38 kernel: pc : [<00000000f7123f44>] lr : [<000000000001dc74>] pstate: 600e0010
Mar 24 08:46:08 RT-AC86U-8F38 kernel: sp : 00000000ffb0d648
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x12: 000000000009ff08
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x11: 00000000f63ff024 x10: 00000000000a02ac
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x9 : 00000000f63ff988 x8 : 00000000000a0764
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x7 : 00000000f63ff9c0 x6 : 00000000000a075e
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x5 : 0000000000000000 x4 : 00000000f63ff96c
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x3 : 0000000000000000 x2 : 00000000ffb0d624
Mar 24 08:46:08 RT-AC86U-8F38 kernel: x1 : 000000000007c66c x0 : 0000000000000000

The last one was about 6 minutes ago.
Anyone know what is going on? Thanks.

You keep finding known issue that have answers and workarounds.
https://www.snbforums.com/threads/crashes.61914/#post-558362

 

[JT Strickland]

I am so sorry. I didn't know how to start to search for this one. Many of my searches result either in nothing, or too much material to wade through.
Most of this is over my head. If I could have hired somebody to do this, I would, but there's nobody around here that I can find that I would want anyway.
Thanks again,
jts

PS: I probably ask a lot of seemingly easy questions, but I'm not looking for the easy out. When I ask something here, it's because I don't know where else to turn. I've got some issues with a new vpn trial that I haven't got worked out yet, and I am about between a rock and a hard place there, too.

 

[RMerlin]

To the OP's defense, it's not quite obvious what to search for in this case, since all you get is a very long error message.

But yeah, this is a known issue with the RT-AC86U primarily, and does not seem to impair functionality (that service is tied to the Trend Micro engine, however the engine should still work fine even if it crashed).

 

[Andy1932]

You can hide them with this script.

https://www.snbforums.com/threads/script-to-remove-dcd-crashes-from-system-log.54734/

 

[JT Strickland]

Thanks, guys, and/or gals, for the help and advice. I am pretty sure something triggered it in my case. I had been running diversion smoothly for a couple of weeks, and had never saw anything in my crash log. Yesterday, around 3 pm, I was "chatting" with a VPN tech trying to get an OpenVNP configuration to work in the router, and I sure wish I knew what I changed then, becauseI did change a few parameters at their bidding.

Might not be so for the other cases. Might not even be so for mine. I got the VPN connection working this morning, and everything is smooth sailing once again. for now.
thanks again,
jts

 

[Butterfly Bones]

I am so sorry. I didn't know how to start to search for this one. Many of my searches result either in nothing, or too much material to wade through.
Most of this is over my head. If I could have hired somebody to do this, I would, but there's nobody around here that I can find that I would want anyway.
Thanks again,
jts

PS: I probably ask a lot of seemingly easy questions, but I'm not looking for the easy out. When I ask something here, it's because I don't know where else to turn. I've got some issues with a new vpn trial that I haven't got worked out yet, and I am about between a rock and a hard place there, too.

Sorry I sounded harsh, yes you are right. Please keep trying to search, Practice makes perfect.

I for one will continue to help where I can. In the error above I pasted this line -

dcd[10047]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007

 

[JT Strickland]

I know it must be frustrating to answer the same questions over and over day in and day out.
I will make a greater effort to look before asking. Thanks for reminding me.
jts