Sky Q hub resets because of "kernel panic marker detected in the flash". Why?

[Myron]

My Sky Q router has come up with a odd error which caused it to reboot.

    <X_SKY_REBOOT_CAUSE>
      <RebootReasonType>KLRT</RebootReasonType>
      <RebootReasonCode>1001</RebootReasonCode>
      <RebootInfo>kernel&#32;panic&#32;marker&#32;detected&#32;in&#32;the&#32;flash</RebootInfo>
    </X_SKY_REBOOT_CAUSE>

Yesterday it was ....

    <X_SKY_REBOOT_CAUSE>
      <RebootReasonType>KLRT</RebootReasonType>
      <RebootReasonCode>1003</RebootReasonCode>
      <RebootInfo>CPE&#32;has&#32;been&#32;software&#32;resetted&#32;(possibly&#32;watchdog&#32;timeout,&#32;if&#32;no&#32;other&#32;indicators)</RebootInfo>
    </X_SKY_REBOOT_CAUSE>

I don't think it's a faulty router. Not long been replaced. Date of first use is 2020-05-01T17:40:22+00:00.

Hoow best to report this issue to Sky and to the right department/section/people and does anyone know why the router would experience a kernel panic?

[jamesn123]

@Myron 

Could quite easily be faulty after a firmware upgrade. I think your best best is a replacement router first to see if it happens after that

[Myron]

Ok.  Think I will.  Version of the router firmware is 2.21.2761.R and it's a ER115 router.

The last Kernel I-have-turned-up-my-toes message was ....

    <X_SKY_REBOOT_CAUSE>
      <RebootReasonType>KLRT</RebootReasonType>
      <RebootReasonCode>1002</RebootReasonCode>
      <RebootInfo>kernel&#32;die&#32;marker&#32;detected&#32;in&#32;the&#32;flash</RebootInfo>
    </X_SKY_REBOOT_CAUSE>

[Robocog]

Ooh
Interesting
I am hopefully getting a replacement router as mine has been rebooting randomly
(so far caught it twice in the space of 4 days)
Router was new when I jojned (1st Feb 2021) - so again a relatively "new" router

I looked through the backup and get

<RebootReasonType>KLRT</RebootReasonType>
<RebootReasonCode>1003</RebootReasonCode>
<RebootInfo>CPE&#32;has&#32;been&#32;software&#32;resetted&#32;(possibly&#32;watchdog&#32;timeout,&#32;if&#32;no&#32;other&#32;indicators)</RebootInfo>
</X_SKY_REBOOT_CAUSE>

I am none the wiser and this was the only "hit" that I found - so felt compelled to post

ER115

Firmware Version 2.22.2884.R

DSL Firmware VersionA2pv6F039m1.d24m

[Robocog]

new router arrived 3 days ago

The firmware on the newly fitted ER115 is 2.21.2761.R

DSL Firmware VersionA2pv6F039m1.d24m
I checked the rebootcause on this "new" router before I did anything with it

....So it came with this message already in there

this morning just before 8 - son announces internet off
Went into room where router is sited - and router is mid reboot (lights blinking)
Logs wiped
Firmware the same (so not a firmware update)

Made a backup and had a look
reboot cause the same - only time has changed


So last one was able to stay on for 4 days, replacement seemingly only 3
have you made any progress, whilst I have slipped backwards?
Be nice to have a router that is allowed to settle and am looking at putting a 3rd party router in its place as I can only see this being related to the router itself

[Myron]

Watchdog timer would be some process within the router that acts like a dead-mans-switch.  On the next watchdog timer event if certain conditions are not met remedial action can occur.  Usually a full reboot of the router.

So, for example, if someone somewhere on the Internet maganges to send something to the router that locks it up (could be a denial of service attack or a probe that causes the router to get really confused, when the watchdog timer trips the router will reset because something is wrong and, well, life goes on.

It becomes a issue when some events, either within the router or external are causing the watchdog routine to very frequently reboot the router.