OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Kernel
  • Assigned To No-one
  • Operating System All
  • Severity Low
  • Priority Very Low
  • Reported Version openwrt-18.06
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Radoslav Petrov - 14.07.2019

FS#2384 - Asus WL500GP V2 crash

Supply the following if possible:
- Device problem occurs on - Asus WL500GP V2;
- Software versions of OpenWrt/LEDE - OpenWrt 18.06.4, r7808-ef686b7292
- Steps to reproduce - I’m not sure, just a higher load and utilizing the wireless connection. For example I’m loading the LuCi realtime graphs in the browser and start downloading a file from the local network.

I’m attaching a crashlog obtained via `cat /sys/kernel/debug/crashlog`. There seems to be a hint for the problem:

<4>[461295.961960] Unhandled kernel unaligned access[#1]:
<4>[461295.967070] CPU: 0 PID: 1299 Comm: irq/5-b43 Not tainted 4.14.131 #0
<4>[461295.973745] task: 80e62680 task.stack: 80e6c000
<4>[461295.978525] $ 0   : 00000000 1000f800 00000001 00000000
<4>[461295.984061] $ 4   : ea1d3f8d 00000022 40005000 00000000
<4>[461295.989598] $ 8   : 80abebd8 00000000 00000002 00000057
<4>[461295.995136] $12   : 0000be9e 00008cc6 00001f00 00000000
<4>[461296.000673] $16   : 00000000 80abf50c 80abf4e0 80e5cd80
<4>[461296.006210] $20   : 00000001 80d77c80 00000000 8041b944
<4>[461296.011747] $24   : 00000000 8024d010
<4>[461296.017285] $28   : 80e6c000 80e6d930 80420000 80262264
<4>[461296.022823] Hi    : 00000000
<4>[461296.025899] Lo    : 002457e0
<4>[461296.028984] epc   : 80262e70 0x80262e70
<4>[461296.033055] ra    : 80262264 0x80262264
<4>[461296.037115] Status: 1000f803     KERNEL EXL IE
<4>[461296.041563] Cause : 00800010 (ExcCode 04)
<4>[461296.045807] BadVA : ea1d3fa1
<4>[461296.048884] PrId  : 00029029 (Broadcom BMIPS3300)
Admin
Petr Štetiar commented on 14.07.2019 19:25

Is this a regression? I mean, 18.06.2 was working fine on this device and the problem happens only with upgrade to 18.06.4? Please also try to reproduce this problem with the latest snapshot image http://downloads.openwrt.org/snapshots/targets/brcm47xx/legacy/ and provide the crashlog again

phr3ak commented on 20.07.2019 15:24

I can confirm. Crash on higher load. WL-500GP v1 is also affected. I can reproduce it with some speedtest.net tests. pppoe + ethernet connection at LAN side. 18.06.4 and snapshot are also affected.

OpenWrt SNAPSHOT, r10560-04cb651376


root@OpenWrt:~# uname -a
Linux OpenWrt 4.14.132 #0 Fri Jul 19 20:11:15 2019 mips GNU/Linux

diizzyy commented on 25.08.2019 12:13

This is most likely related to memory starvation, this device has 32Mbyte of memory and there are several reports of LuCI, opkg etc running out of memory on similar devices.

phr3ak commented on 28.08.2019 11:20

I don't use LuCI. free reports available memory. unaligned access is not happening because of not enough memory.

<4>[461295.961960] Unhandled kernel unaligned access[#1]:

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