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10-20-2023 11:00 AM - edited 10-20-2023 11:31 AM
Router: RT-AC66U B1 (AC1750); Firmware Version: 3.0.0.4.51665 ;
On Tuesday, 2023/10/17, I noticed the entire System Log filled with the same repeating errors, all starting with error: "kernel: dcd/22609: potentially unexpected fatal signal 6." The only difference between the errors is the dcd number.
I checked the Administration menu, Firmware Upgrade tab, and found that the Firmware Signature Version had been updated to "2.376 2023/10/17 09:04" which was a couple of hours before I checked the logs.
After seeing that, I unplugged the Router for a few minutes and plugged it in again and let it boot up.
The errors went away for about an hour then came back. Subsequent (4) power off/on resulted in the same situation.
The errors do not seem to be affecting the router's performance, but the problem needs to be addressed by Asus. Attached is a snippet of the errors.
11-05-2023 05:58 AM
Update details: 24/7, every two minutes exactly, I get an identical multi-line block - repeated six times in less than one second. Then nothing for two minutes and the whole thing repeats - forever? Sample block below:
Nov 5 04:28:16 kernel: dcd/27243: potentially unexpected fatal signal 6.
Nov 5 04:28:16 kernel: Pid: 27243, comm: dcd
Nov 5 04:28:16 kernel: CPU: 0 Tainted: P (2.6.36.4brcmarm #1)
Nov 5 04:28:16 kernel: PC is at 0x4013b340
Nov 5 04:28:16 kernel: LR is at 0x400bf214
Nov 5 04:28:16 kernel: pc : [<4013b340>] lr : [<400bf214>] psr: 60000010
Nov 5 04:28:16 kernel: sp : bdbfa630 ip : 400c9e5c fp : 401981a0
Nov 5 04:28:16 kernel: r10: 000c2d88 r9 : 00000000 r8 : 00000000
Nov 5 04:28:16 kernel: r7 : 00000025 r6 : 00000006 r5 : 00006a6b r4 : 400ca068
Nov 5 04:28:16 kernel: r3 : 400ca068 r2 : 00001406 r1 : 00000006 r0 : 00000000
Nov 5 04:28:16 kernel: Flags: nZCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user
Nov 5 04:28:16 kernel: Control: 10c53c7d Table: 9b16804a DAC: 00000015
11-05-2023 08:34 AM
Yeah, that's pretty much what I'm seeing. Forever? It'll probably stop once ASUS pushes a new Signature Firmware update for November. Or at least I'm hoping it will stop. Keeping my fingers crossed.
11-05-2023 02:50 PM - edited 11-05-2023 02:52 PM
Received this reply from ASUS support (N2310029933-0005)
In accordance to the response from our higher technical team. The log is generated by AiProtection. They suggest to reset the router and then re-enable AiProtection. This should reduce the number of logs generated.
They will update AiProtection version once they fix the log issue.
11-06-2023 09:27 AM - edited 11-06-2023 09:29 AM
I got a PM from ASUS that pretty much suggested the same thing... Except I've never had AiProtection enabled, and resetting the router didn't help at all. And I have no intention of ever enabling AiProtection as I don't care to have any of my information sent off to some third party.
As far as I'm concerned, ASUS corrupted their Signature Firmware like they did back in May - the one that caused everybody's routers to reboot over-and-over due to overloading the router's buffers.
11-06-2023 03:31 AM - edited 11-06-2023 10:21 AM
Same problem. Each 2 minutes kernel message:
<html>
Nov 6 13:14:35 kernel: dcd/25145: potentially unexpected fatal signal 6.
Nov 6 13:14:35 kernel: Pid: 25145, comm: dcd
Nov 6 13:14:35 kernel: CPU: 0 Tainted: P (2.6.36.4brcmarm #1)
Nov 6 13:14:35 kernel: PC is at 0x40397340
Nov 6 13:14:35 kernel: LR is at 0x400eb214
Nov 6 13:14:35 kernel: pc : [<40397340>] lr : [<400eb214>] psr: 60000010
Nov 6 13:14:35 kernel: sp : bdffa630 ip : 400f5e5c fp : 403f41a0
Nov 6 13:14:35 kernel: r10: 000ce058 r9 : 00000000 r8 : 00000000
Nov 6 13:14:35 kernel: r7 : 00000025 r6 : 00000006 r5 : 00006239 r4 : 400f6068
Nov 6 13:14:35 kernel: r3 : 400f6068 r2 : 00001406 r1 : 00000006 r0 : 00000000
Nov 6 13:14:35 kernel: Flags: nZCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user
Nov 6 13:14:35 kernel: Control: 10c53c7d Table: 995a404a DAC: 00000015
</html>
I don't understand why AiProtection was enabled automatically and when this happened. Anyway disabling it didn't help.
ASUS RT-AC66U B1 FW: 3.0.0.4.386_51665
Downgrading to FW: 3.0.0.4.386_51255 and FW: 3.0.0.4.386_46065 didn't help.
