Warning - firmware/bootloader bug?

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Johan1974
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Joined: 19 Jul 2017
Posts: 11

PostPosted: Mon Dec 06, 2021 18:28    Post subject: Warning - firmware/bootloader bug? Reply with quote
Hello,

In the logfiles of my r7000 i see the following lines

Quote:
Dec 6 19:24:01 DD-WRT kern.warn kernel: Ignoring unrecognised tag 0x00000000
Dec 6 19:24:01 DD-WRT kern.info kernel: Memory policy: Data cache writealloc
Dec 6 19:24:01 DD-WRT kern.info kernel: map io
Dec 6 19:24:01 DD-WRT kern.info kernel: MPCORE found at 19020000 (VIRT 99020000) 18000000 98000000
Dec 6 19:24:01 DD-WRT kern.warn kernel: Hit pending asynchronous external abort (FSR=0x00001c06) during first unmask, this is most likely caused by a firmware/bootloader bug.


Anybody knows what this means and how to solve this.

_________________
Greetz,

Johan
==============
Netgear R7000
Firmware VersionDD-WRT v3.0-r47720 (12/02/21)
Kernel VersionLinux 4.4.293 #4519 SMP Thu Dec 2 04:55:15 +07 2021 armv7l
==============
Asus RT-AC5300
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Alozaros
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Joined: 16 Nov 2015
Posts: 6410
Location: UK, London, just across the river..

PostPosted: Mon Dec 06, 2021 20:44    Post subject: Reply with quote
1. Did you activate the klog (detailed log)?
2. How does the router behave is it normal?
3. If you activate the kernel log you may see some lines like this, but in the end it could be a normal boot... Laughing
4.did it happen on the previous firmware ?

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Johan1974
DD-WRT Novice


Joined: 19 Jul 2017
Posts: 11

PostPosted: Mon Dec 06, 2021 21:08    Post subject: Reply with quote
This is the first time i work with these logs to see what might be wrong and maybe to optimize my connections.

So i do not know if this was also with the previous firmware.

Especially the word line bug in firmware does not sound good and not something to ignore. Allthough everything seems to be working fine.

_________________
Greetz,

Johan
==============
Netgear R7000
Firmware VersionDD-WRT v3.0-r47720 (12/02/21)
Kernel VersionLinux 4.4.293 #4519 SMP Thu Dec 2 04:55:15 +07 2021 armv7l
==============
Asus RT-AC5300
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 14125
Location: Texas, USA

PostPosted: Mon Dec 06, 2021 23:23    Post subject: Reply with quote
Some web search results for your reading pleasure:

https://svn.dd-wrt.com/ticket/7474
https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1244294#1244290
https://github.com/torvalds/linux/blob/master/arch/arm/mm/fault.c
https://pastebin.com/xiprqQ3k
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/963161/am5749-linux-boot-message-0-000000-hit-pending-asynchronous-external-abort-fsr-0x00001211-during-first-unmask-this-is-most-likely-caused-by-a-firmware-bootloader-bug

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