Repeated errors in log AC86U 384.19

[Sonofdavidsfather]

I keep getting the errors I pasted below in my log. I noticed them starting a few weeks ago. I am not seeing any pattern to events preceding the errors or following the errors. They aren't happening at consistent times. Does anyone have any ideas?

I did do a WPS NVRAM reset, formatting USB stick, and formatting jffs last night. The errors started cropping back up after all of that again.

Jan 21 10:10:57 kernel: dcd[17517]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007

Jan 21 10:10:57 kernel: pgd = ffffffc002e46000

Jan 21 10:10:57 kernel: [00000000] *pgd=0000000009870003, *pud=0000000009870003, *pmd=0000000017406003, *pte=0000000000000000

Jan 21 10:10:57 kernel: CPU: 1 PID: 17517 Comm: dcd Tainted: P O 4.1.27 #2

Jan 21 10:10:57 kernel: Hardware name: Broadcom-v8A (DT)

Jan 21 10:10:57 kernel: task: ffffffc01daf5540 ti: ffffffc0047a0000 task.ti: ffffffc0047a0000

Jan 21 10:10:57 kernel: PC is at 0xf7100f44

Jan 21 10:10:57 kernel: LR is at 0x1dc74

Jan 21 10:10:57 kernel: pc : [<00000000f7100f44>] lr : [<000000000001dc74>] pstate: 600e0010

Jan 21 10:10:57 kernel: sp : 00000000ffa07df8

Jan 21 10:10:57 kernel: x12: 000000000009ff08

Jan 21 10:10:57 kernel: x11: 00000000f63ff024 x10: 00000000000a02ac

Jan 21 10:10:57 kernel: x9 : 00000000f63ff870 x8 : 00000000000a0764

Jan 21 10:10:57 kernel: x7 : 00000000f63ff8a8 x6 : 00000000000a075e

Jan 21 10:10:57 kernel: x5 : 0000000000000000 x4 : 00000000f63ff854

Jan 21 10:10:57 kernel: x3 : 0000000000000000 x2 : 00000000ffa07dd4

Jan 21 10:10:57 kernel: x1 : 000000000007c66c x0 : 0000000000000000

Jan 21 10:05:41 kernel: dcd[17182]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007

Jan 21 10:05:41 kernel: pgd = ffffffc0101c8000

Jan 21 10:05:41 kernel: [00000000] *pgd=0000000003bf0003, *pud=0000000003bf0003, *pmd=0000000009006003, *pte=0000000000000000

Jan 21 10:05:41 kernel: CPU: 1 PID: 17182 Comm: dcd Tainted: P O 4.1.27 #2

Jan 21 10:05:41 kernel: Hardware name: Broadcom-v8A (DT)

Jan 21 10:05:41 kernel: task: ffffffc013e76080 ti: ffffffc0156d0000 task.ti: ffffffc0156d0000

Jan 21 10:05:41 kernel: PC is at 0xf7400f44

Jan 21 10:05:41 kernel: LR is at 0x1dc74

Jan 21 10:05:41 kernel: pc : [<00000000f7400f44>] lr : [<000000000001dc74>] pstate: 600e0010

Jan 21 10:05:42 kernel: sp : 00000000ffa3ac58

Jan 21 10:05:42 kernel: x12: 000000000009ff08

Jan 21 10:05:42 kernel: x11: 00000000f66ff024 x10: 00000000000a02ac

Jan 21 10:05:42 kernel: x9 : 00000000f66ff870 x8 : 00000000000a0764

Jan 21 10:05:42 kernel: x7 : 00000000f66ff8a8 x6 : 00000000000a075e

Jan 21 10:05:42 kernel: x5 : 0000000000000000 x4 : 00000000f66ff854

Jan 21 10:05:42 kernel: x3 : 0000000000000000 x2 : 00000000ffa3ac34

Jan 21 10:05:42 kernel: x1 : 000000000007c66c x0 : 0000000000000000

Jan 21 10:04:50 kernel: dcd[15019]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007

Jan 21 10:04:50 kernel: pgd = ffffffc010e23000

Jan 21 10:04:50 kernel: [00000000] *pgd=0000000009063003, *pud=0000000009063003, *pmd=0000000009b9b003, *pte=0000000000000000

Jan 21 10:04:50 kernel: CPU: 1 PID: 15019 Comm: dcd Tainted: P O 4.1.27 #2

Jan 21 10:04:50 kernel: Hardware name: Broadcom-v8A (DT)

Jan 21 10:04:50 kernel: task: ffffffc0170634c0 ti: ffffffc00bf78000 task.ti: ffffffc00bf78000

Jan 21 10:04:50 kernel: PC is at 0xf6eb2f44

Jan 21 10:04:50 kernel: LR is at 0x1dc74

Jan 21 10:04:50 kernel: pc : [<00000000f6eb2f44>] lr : [<000000000001dc74>] pstate: 600e0010

Jan 21 10:04:50 kernel: sp : 00000000ffd28bf8

Jan 21 10:04:50 kernel: x12: 000000000009ff08

Jan 21 10:04:50 kernel: x11: 00000000f61ff024 x10: 00000000000a02ac

Jan 21 10:04:50 kernel: x9 : 00000000f61ff870 x8 : 00000000000a0764

Jan 21 10:04:50 kernel: x7 : 00000000f61ff8a8 x6 : 00000000000a075e

Jan 21 10:04:50 kernel: x5 : 0000000000000000 x4 : 00000000f61ff854

Jan 21 10:04:50 kernel: x3 : 0000000000000000 x2 : 00000000ffd28bd4

Jan 21 10:04:50 kernel: x1 : 000000000007c66c x0 : 0000000000000000

 

[ColinTaylor]

The "dcd Tainted" errors have been discussed for years. IIRC the current thinking is that it's caused by conflict between AiProtection and certain Merlin add-ons.

 

[Sonofdavidsfather]

The "dcd Tainted" errors have been discussed for years. IIRC the current thinking is that it's caused by conflict between AiProtection and certain Merlin add-ons.

Thank you very much for the info. With as long as those errors were, I wasn't sure what to search for. "DCD Tainted" is pulling up plenty of results. I run AI Protection, Skynet, and Diversion. I am pretty sure I didn't start seeing these until I retired my PiHole and switched to Diversion. Diversion is more important to me than the AI Protection. So I will go ahead and turn off the AI Protection.

 

[ColinTaylor]

I don't know whether my memory of this is correct, and I don't have that model of router. So if you could make a follow up post letting us know if that fixes the problem I'm sure it would help others.

 

[Sonofdavidsfather]

I don't know whether my memory of this is correct, and I don't have that model of router. So if you could make a follow up post letting us know if that fixes the problem I'm sure it would help others.

I can do that. I turned it off 20 minutes ago, so I will follow up tomorrow after it has had 24 hours.

 

[Jack Yaz]

I don't know whether my memory of this is correct, and I don't have that model of router. So if you could make a follow up post letting us know if that fixes the problem I'm sure it would help others.

It's usually pixelserv (well, the alias interface) conflicting with AiProtection. Disabling the latter may help, i can't recall, but disabling pixelserv stops the error completely.

 

[Sonofdavidsfather]

It's usually pixelserv (well, the alias interface) conflicting with AiProtection. Disabling the latter may help, i can't recall, but disabling pixelserv stops the error completely.

I don't know whether my memory of this is correct, and I don't have that model of router. So if you could make a follow up post letting us know if that fixes the problem I'm sure it would help others.

Disabling the AIProtection alone didn't do it. I had to go ahead and withdraw from the TrendMicro agreement in the Admin/Privacy tab. Since then no errors.

I might turn those back on, since TrendMicro is also behind the AdaptiveQoS and Parental Controls. I am going to give it a little time to see how things go without the Qos, and I should be able to use the porn blocking lists on Wally3ks page in Diversion to cover the parental controls.

 

[Sonofdavidsfather]

I tried to turn AIProtection back on after the 386.1 update. I am still seeing the same errors. So it looks like the same bug is still in the Trend Micro stuff on the 386 codebase.

 

[Sonofdavidsfather]

I have dug through my logs, and I don't see the errors anymore. The 2 big changes I have made are updating to 386.2_2 and uninstalling Diversion. When I uninstalled Diversion I don't believe I removed the Entware packages.