Old news - dcd tainted - any explanation?

Begotten

Occasional Visitor
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
 
Last edited:

ColinTaylor

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

Begotten

Occasional Visitor
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

Part of the Furniture
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.
 
Last edited:

gattaca

Senior Member
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

Occasional Visitor
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

Occasional Visitor
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

Regular Contributor
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
 

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