lighttpd-arppin Tainted when booting

[Morpheus2020]

Hi, everyone.
When my AX86U rebooted last night, the log appeared as follows:

pr  1 13:39:58 kernel: potentially unexpected fatal signal 11.
Apr  1 13:39:58 kernel: CPU: 1 PID: 4662 Comm: lighttpd-arppin Tainted: P           O    4.1.52 #2
Apr  1 13:39:58 kernel: Hardware name: Broadcom-v8A (DT)
Apr  1 13:39:58 kernel: task: ffffffc02b2dab80 ti: ffffffc021b9c000 task.ti: ffffffc021b9c000
Apr  1 13:39:58 kernel: PC is at 0x13858
Apr  1 13:39:58 kernel: LR is at 0x13824
Apr  1 13:39:58 kernel: pc : [<0000000000013858>] lr : [<0000000000013824>] pstate: a00d0010
Apr  1 13:39:58 kernel: sp : 00000000ff912570
Apr  1 13:39:58 kernel: x12: 00000000ffffffff
Apr  1 13:39:58 kernel: x11: 0000000000000000 x10: 00000000006ff560
Apr  1 13:39:58 kernel: x9 : 0000000000028ce0 x8 : 00000000006cb150
Apr  1 13:39:58 kernel: x7 : 00000000ff9125b8 x6 : 0000000000028ce0
Apr  1 13:39:58 kernel: x5 : 0000000000000000 x4 : 00000000006ff4e8
Apr  1 13:39:58 kernel: x3 : 00000000f6752828 x2 : 0000000000f67500
Apr  1 13:39:58 kernel: x1 : 00000000ff9125b8 x0 : 00000000ffffffc7

My AX86U was running on 386.5. It hasn't had this problem before. The problem occurs every reboot and "power off and on" now. I upgraded the firmware to 386.5.2 and the problem still exists. Unplugged all USB devices, the problem still exists. I know lighttpd works for Aicloud. I tested Aicloud and it works. I type TOP in ssh, there is no lighttpd-arppin in the list.
Does anyone know the function of lighttpd-arppin? how can i fix this?

 

[RMerlin]

It's not "tainted", it's just telling you that it crashed.

This is part of AiCloud, it's probably the process that maps available computers on your network through arping so it can list available shares.

 

[Morpheus2020]

It's not "tainted", it's just telling you that it crashed.

This is part of AiCloud, it's probably the process that maps available computers on your network through arping so it can list available shares.

Thanks, RMerlin.

 

[Morpheus2020]

I tried to turn off Cloud Disk and Smart Access of Aicloud, then reboot, no "Tainted". And I turned on Cloud Disk or Smart Access, waited a few seconds, "Tainted" appeared in SYSLOG. By the way, Cloud Disk works and Smart Access doesn't work.
I haven't changed the router's settings recently.
Could someone provide some ideas to solve this problem except for factory reset?

 

[Morpheus2020]

The problem has been solved. I found that "Tainted" doesn't occur if no device is connected to it when the router is powered on. So I guess there's some kind of bug with a smart home appliance. I rebooted all my smart home appliances and the problem was solved.
Thanks again RMerlin for the tip.

 

[Morpheus2020]

After a certain reboot, the problem reappeared. I've tried resetting the router, but it still doesn't work.

 

[Morpheus2020]

Until today, I have tried the following:
1.Upgrade firmware from 386.5 to 386.5.2 .
2.Change LAN IP of the router.
3.Change WAN mode.
4.Restart AiCloud, SMB, and FTP.
5.Reboot without USB device.
6.Change the port of AiCloud.
They didn't solve the problem.

7.Reset the router and set all options manually. I turned on AiCloud, then rebooted, no "tainted“ appeared. Four days later, I rebooted the router, and "tainted” appeared.
8.No device is connected when the router is powered on. (Change SSID so that the devices cannot connect to the router or Turn off all the devices). This method used to solve the problem, but the problem reappeared after a month. Now, this method doesn't work.

I guess it's a bug of AiCloud, but I don't have the ability to avoid it.


AX86U with Asuswrt-Merlin 386.5.2.
Adaptive QoS + FlexQoS 1.3.1
FullCone NAT
PPP Echo
DHCP Enable Manual Assignment
IPv6
DDNS(Asus) + Let's Encrypt
USB1 : 4T HDD
USB2 : 256G SSD
SMB + FTP + AiCloud Cloud Disk
AiMesh node : AX82U
HDD Hibernation
Enable Reboot Scheduler
Enable SSH