UI Crash every few minutes

[terminator]

When I am in the router UI, it goes back to login page every few minutes and I see this in the logs.. an ideas? It does not seem like the internet connectivity is affected.

May 27 10:46:00 kernel: pgd = ffffffc0105c1000
May 27 10:46:00 kernel: [001d3b0c] *pgd=000000001298d003, *pud=000000001298d003, *pmd=0000000012f22003, *pte=0000000000000000
May 27 10:46:00 kernel: CPU: 0 PID: 10449 Comm: httpd Tainted: P O 4.1.27 #2
May 27 10:46:00 kernel: Hardware name: Broadcom-v8A (DT)
May 27 10:46:00 kernel: task: ffffffc01934cb80 ti: ffffffc011f10000 task.ti: ffffffc011f10000
May 27 10:46:00 kernel: PC is at 0xf6d2caa0
May 27 10:46:00 kernel: LR is at 0x38e6c
May 27 10:46:00 kernel: pc : [<00000000f6d2caa0>] lr : [<0000000000038e6c>] pstate: 20000010
May 27 10:46:00 kernel: sp : 00000000ffeef2c8
May 27 10:46:00 kernel: x12: 00000000000876e4
May 27 10:46:00 kernel: x11: 00000000ffeef4ec x10: 00000000f69b507e
May 27 10:46:00 kernel: x9 : 0000000000000000 x8 : 0000000000000000
May 27 10:46:00 kernel: x7 : 00000000ffeef534 x6 : 00000000ffeef4c8
May 27 10:46:00 kernel: x5 : 00000000f69b5000 x4 : 00000000001d3b00
May 27 10:46:00 kernel: x3 : 00000000f6bd87a8 x2 : 00000000f6bd87a8
May 27 10:46:00 kernel: x1 : 0000000000000000 x0 : 00000000001d3b00
May 27 10:46:04 watchdog: restart httpd
May 27 10:46:04 rc_service: watchdog 815:notify_rc stop_httpd
May 27 10:46:04 rc_service: watchdog 815:notify_rc start_httpd
May 27 10:46:04 RT-AC86U: start httpd:80


I am using RT-AC86U_384.5_0_cferom_ubi.w

 

[skeal]

When I am in the router UI, it goes back to login page every few minutes and I see this in the logs.. an ideas? It does not seem like the internet connectivity is affected.

May 27 10:46:00 kernel: pgd = ffffffc0105c1000
May 27 10:46:00 kernel: [001d3b0c] *pgd=000000001298d003, *pud=000000001298d003, *pmd=0000000012f22003, *pte=0000000000000000
May 27 10:46:00 kernel: CPU: 0 PID: 10449 Comm: httpd Tainted: P O 4.1.27 #2
May 27 10:46:00 kernel: Hardware name: Broadcom-v8A (DT)
May 27 10:46:00 kernel: task: ffffffc01934cb80 ti: ffffffc011f10000 task.ti: ffffffc011f10000
May 27 10:46:00 kernel: PC is at 0xf6d2caa0
May 27 10:46:00 kernel: LR is at 0x38e6c
May 27 10:46:00 kernel: pc : [<00000000f6d2caa0>] lr : [<0000000000038e6c>] pstate: 20000010
May 27 10:46:00 kernel: sp : 00000000ffeef2c8
May 27 10:46:00 kernel: x12: 00000000000876e4
May 27 10:46:00 kernel: x11: 00000000ffeef4ec x10: 00000000f69b507e
May 27 10:46:00 kernel: x9 : 0000000000000000 x8 : 0000000000000000
May 27 10:46:00 kernel: x7 : 00000000ffeef534 x6 : 00000000ffeef4c8
May 27 10:46:00 kernel: x5 : 00000000f69b5000 x4 : 00000000001d3b00
May 27 10:46:00 kernel: x3 : 00000000f6bd87a8 x2 : 00000000f6bd87a8
May 27 10:46:00 kernel: x1 : 0000000000000000 x0 : 00000000001d3b00
May 27 10:46:04 watchdog: restart httpd
May 27 10:46:04 rc_service: watchdog 815:notify_rc stop_httpd
May 27 10:46:04 rc_service: watchdog 815:notify_rc start_httpd
May 27 10:46:04 RT-AC86U: start httpd:80


I am using RT-AC86U_384.5_0_cferom_ubi.w

Set to factory defaults and hand configure your settings back in. Use screen shots to back up your system.

 

[terminator]

I noticed, it was only causing this when I went into network map -> device list. This router is only a day old and I have set 1. Static IPs, 2. Changed some devices names, 3. Changed some device icons (stock not custom) in the area that seem troublesome.

So, I set to factory defaults and the issue went away. I am going to backup the config before I try to do something with devices so I can restore if it happens again. It would have been nice to see an error of what the issue was but oh well!

 

[kfp]

It would have been nice to see an error of what the issue was but oh well!

See below.
It did tell you what’s wrong, kernel is tainted, nothing you or Merlin can do about it since it most likely came from one of the closed source components (networkmap is now closed source).

A little bit more about tainted kernel here: https://www.suse.com/support/kb/doc/?id=3582750

Which browser were you using? I wonder if it’ll help if you used IE/Edge.

 

[RMerlin]

It did tell you what’s wrong, kernel is tainted,

Unrelated. The kernel taint means that the kernel contains modules that are not GPL (all the Trend Micro modules, the Tuxera drivers, etc...). It's how kernel devs inform you that if something goes wrong with the kernel, they are washing their hands over it as you are not running 100% GPL kernel code. It's also unrelated to user-space programs, it only relates to the kernel itself.

 

[kfp]

It seems that this is the same crash others are seeing on 86U, OP just missed a line in the log output

kernel: httpds[781]: unhandled level 3 translation fault (11) at 0x005d3774, esr 0x92000007

 

[terminator]

It seems that this is the same crash others are seeing on 86U, OP just missed a line in the log output

kernel: httpds[781]: unhandled level 3 translation fault (11) at 0x005d3774, esr 0x92000007

Yeah, actually that was in there too. Not sure how I missed it. Thanks!

I reset to factor defaults, then proceeded with changing some dns names for devices (didn't make anything too long) and some static IP assignment (5 or so out of 20). What I didn't do this time is change device images or block 2 devices (I couldn't figure out what they were so blocked them to identify intially). The issue did not come back. I am unsure if the issue was directly related to the 2 things I didn't do this time but it has solved the issue for now.