Old news - dcd tainted - any explanation?

[Begotten]

Hi everyone,
Since the latest update with 386.2 on my ac86u I'm getting a lot of dcd tainted errors, (like every 10 minutes)
When searching on the forum I always found some answers saying that's an old behavior and harmless, I just have to forget it, (ex: ref here)
But can anyone please explain this error or have some answers about it?
Many thanks


I'm running : scribe, uiscribe and scMerlin.
I've got 2 USB hard drives attach with music and movies (running with mediaserver),
a swap file of 256mb on one of the usb drive.
Running with a ac86u as main router and 2 ac68u in aimesh mode


Apr 6 08:12:52 RT-AC86U kernel: dcd[31095]: unhandled level 3 translation fault (11) at 0x00000000, esr 0x92000007
Apr 6 08:12:52 RT-AC86U kernel: pgd = ffffffc013c8c000
Apr 6 08:12:52 RT-AC86U kernel: [00000000] *pgd=0000000013e58003, *pud=0000000013e58003, *pmd=00000000088d3003, *pte=0000000000000000
Apr 6 08:12:52 RT-AC86U kernel: CPU: 1 PID: 31095 Comm: dcd Tainted: P O 4.1.27 #2
Apr 6 08:12:52 RT-AC86U kernel: Hardware name: Broadcom-v8A (DT)
Apr 6 08:12:52 RT-AC86U kernel: task: ffffffc0119a55c0 ti: ffffffc008a7c000 task.ti: ffffffc008a7c000
Apr 6 08:12:52 RT-AC86U kernel: PC is at 0xf7412f44
Apr 6 08:12:52 RT-AC86U kernel: LR is at 0x1dd14
Apr 6 08:12:52 RT-AC86U kernel: pc : [<00000000f7412f44>] lr : [<000000000001dd14>] pstate: 600f0010
Apr 6 08:12:52 RT-AC86U kernel: sp : 00000000ffcd4208
Apr 6 08:12:52 RT-AC86U kernel: x12: 00000000000a2050
Apr 6 08:12:52 RT-AC86U kernel: x11: 00000000f66ff024 x10: 00000000000a23c4
Apr 6 08:12:52 RT-AC86U kernel: x9 : 00000000f66ffbbc x8 : 00000000000a287c
Apr 6 08:12:52 RT-AC86U kernel: x7 : 00000000f66ffbf0 x6 : 00000000000a2876
Apr 6 08:12:52 RT-AC86U kernel: x5 : 0000000000000000 x4 : 00000000f66ffba0
Apr 6 08:12:52 RT-AC86U kernel: x3 : 0000000000000000 x2 : 0000000000000000
Apr 6 08:12:52 RT-AC86U kernel: x1 : 000000000007d75a x0 : 0000000000000000

 

[ColinTaylor]

IIRC there was some speculation that this might be caused by Diversion/Pixelserv. Are you running those?

 

[Begotten]

Hi ColinTaylor,
No, I'm not running those scripts, only : scribe, uiscribe and scMerlin
I've got 2 USB hard drives attach with music and movies (running with mediaserver),
and a swap file of 256mb on one of the usb drive.

tanks

IIRC there was some speculation that this might be caused by Diversion/Pixelserv. Are you running those?

 

[ColinTaylor]

Ah, OK.

Well dcd is part of the Trend Micro engine so I'd guess that if you disabled all the Trend Micro stuff dcd wouldn't be running any more.

 

[gattaca]

Isn't this the well known "dcd" error in the closed source that ASUS won't fix? It's been around a while. If not and then is new, then forget what I just typed.

 

[francovilar]

I had this errors all the time. Went away after I replaced my usb storage. Could be a coincidence… but never had this error again. I have those scripts and a few more installed

 

[Begotten]

The strangest thing is that since 2:15 this morning no new error has appeared in the crash log, unlike what happened before with errors every 5 minutes.
And no, nothing has changed since yesterday, no configuration, no reboot, nothing at all.

I hope it will stay that way.

 

[Wolfclaw]

Had my AX86U up and running a day and see lots of these messages.

Jun 16 12:35:16 kernel: CPU: 1 PID: 10602 Comm: dcd Tainted: P O 4.1.52 #2
Jun 16 12:35:16 kernel: Hardware name: Broadcom-v8A (DT)
Jun 16 12:35:16 kernel: task: ffffffc02d3acb40 ti: ffffffc02ffa8000 task.ti: ffffffc02ffa8000
Jun 16 12:35:16 kernel: PC is at 0xf73b239c
Jun 16 12:35:16 kernel: LR is at 0x1dd58
Jun 16 12:35:16 kernel: pc : [<00000000f73b239c>] lr : [<000000000001dd58>] pstate: 600f0010
Jun 16 12:35:16 kernel: sp : 00000000ff91fac8
Jun 16 12:35:16 kernel: x12: 00000000000a2050
Jun 16 12:35:16 kernel: x11: 00000000f66ff024 x10: 00000000000a23c4
Jun 16 12:35:16 kernel: x9 : 00000000f66ff92c x8 : 00000000000a287c
Jun 16 12:35:16 kernel: x7 : 00000000f66ff964 x6 : 00000000000a2876
Jun 16 12:35:16 kernel: x5 : 0000000000000000 x4 : 00000000f66ff910
Jun 16 12:35:16 kernel: x3 : 0000000000000000 x2 : 00000000ff91faa4
Jun 16 12:35:16 kernel: x1 : 000000000007d652 x0 : 0000000000000000

I do run USB3 + Diversion/Pixelserv/UIDivStats + FlexQos

 

[SkyRE]

Hello,
Only I have this in syslog on regular basis?
HW: AX88U. FW: 388_2_2.
AiProtection were not enabled. Installed: SkyNet, Diversion, FlexQoS, ...

 

[SkyRE]

Sorry, saw that other AX88U owners had it too.