OpenWrt/LEDE Project

  • Status Closed
  • Percent Complete
    100%
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity High
  • Priority Very Low
  • Reported Version openwrt-19.07
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Andy Lee - 13.01.2020
Last edited by Adrian Schmutzler - 21.07.2020

FS#2733 - Ath79 firmware accident enter to failsafe mode when reboot/reflash router.

Sometime when reboot/reflash router, I see serial console messages:

[    5.868712] init: - preinit -
[    5.960699] random: procd: uninitialized urandom read (4 bytes read)
[    6.909058] random: jshn: uninitialized urandom read (4 bytes read)
[    7.327749] random: jshn: uninitialized urandom read (4 bytes read)
[    7.567130] random: jshn: uninitialized urandom read (4 bytes read)
[    7.638687] random: jshn: uninitialized urandom read (4 bytes read)
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[    9.860896] eth0: link up (1000Mbps/Full duplex)
- failsafe button rfkill was pressed -
- failsafe -
[   12.309911] urandom_read: 3 callbacks suppressed
[   12.309921] random: dropbearkey: uninitialized urandom read (32 bytes read)
Generating 1024 [   12.323834] random: dropbearkey: uninitialized urandom read (32 bytes read)
bit rsa key, this may take a while...
Public key portion is:
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCKZVT/UJoTHz2CkNHrYmfzzBDfa/6Yd6+LJVcrURD15lbN3ch7AG/tc/ZolkeOrqkKD6dM2h4TsYv4+)
Fingerprint: sha1!! b9:a4:d3:94:71:b3:34:ae:a3:85:c8:e9:a7:c8:63:fd:74:52:5e:ad


BusyBox v1.30.1 () built-in shell (ash)

ash: can't access tty; job control turned off
  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt 19.07-SNAPSHOT, r10868-08d9828b76
 -----------------------------------------------------
================= FAILSAFE MODE active ================

I noticed when wifi on/off switch on router is on, sometime it accident enter failsafe mode. If switch to off, it’s not happen.
Issue happens with 841n v8/v9/v10 & 841hp v3 (same hardware as v9/10) model.


Closed by  Adrian Schmutzler
21.07.2020 10:10
Reason for closing:  Fixed
Additional comments about closing:  

Fixed for v8 in https://github.com/openwrt/op enwrt/commit/5e86877f36b0d95127dcef8ed3a bf78ecd78061d

Project Manager
Adrian Schmutzler commented on 08.07.2020 18:31
- failsafe button rfkill was pressed -

So, this tells us that the router thinks the rfkill button was pressed. With the 841n v8, it appears that rfkill is actually a switch, so having it "enabled" would permanently send "button pressed" ...

However, this only applies to the 841n v8. For 841n v9/v10, the button is actually a button and the problem should not occur.

Project Manager
Adrian Schmutzler commented on 08.07.2020 19:03

Created a PR for the 841n v8 here: https://github.com/openwrt/openwrt/pull/3184

Project Manager
Adrian Schmutzler commented on 21.07.2020 10:10

Fixed for v8 in https://github.com/openwrt/openwrt/commit/5e86877f36b0d95127dcef8ed3abf78ecd78061d

As the v9/v10 are different, I'm closing this now.

Please resubmit for v9/v10 when you can reproduce the problem there.

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