sunzone

I have observed kernel panics using xradio driver before. Check Opizero wifi kernel hang
I decided to test it with this driver.
Summary: No improvements


 
Ap mode
No kernel panics were observed during 1 day when running only on AP mode.
 
However, when Orange Pi is rebooted in AP mode, kernel panic was observed.
After running 5 Orange Pi devices, after 60 average reboots, Kernel panic occurred for all devices.
[   25.238909] xradio WSM-ERR: CMD timeout!>>> 0x0006 (16), buf_use=1, bh_state=0 [   25.247990] xradio WSM-ERR: bh error!>>> 0x0006 (12) [   25.254591] xradio WSM-ERR: bh error!>>> 0x0006 (12) [   25.261367] xradio WSM-ERR: bh error!>>> 0x0012 (16) [   25.266375] xradio STA-ERR: wsm_set_tx_queue_params failed! [   25.271979] xradio WSM-ERR: bh error!>>> 0x0012 (16) [   25.276963] xradio STA-ERR: wsm_set_tx_queue_params failed! [   25.282555] xradio WSM-ERR: bh error!>>> 0x0012 (16) [   25.287536] xradio STA-ERR: wsm_set_tx_queue_params failed! [   25.293128] xradio WSM-ERR: bh error!>>> 0x0012 (16) [   25.298109] xradio STA-ERR: wsm_set_tx_queue_params failed! [   42.299138] rcu: INFO: rcu_sched self-detected stall on CPU [   42.304730] rcu:     1-....: (1 GPs behind) idle=21e/1/0x40000002 softirq=3544/3545 fqs=2623 [   74.743671] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 1-... } 5569 jiffies s: 129 root: 0x2/. [   74.754140] rcu: blocking rcu_node structures: Same error was observed in old firmware.
 
Client mode
No kernel panics were observed during 1 day when connected to an AP with a non-changing channel.
 
Running in Client mode and changing AP’s channel result in similar kernel panic.
But this occurred rarely. Running 5 Orange pi zero devices and changing channel continuously 72 times, lead to a Kernel panic only on 1 device.
 
Running in Client mode, and rebooting also result in Kernel panic.
It took an average of 200 reboots for the Kernel panic for 5 Orange Pi Zero Devices.

Same error occurred on all situations.
 
Hope this helps.
This is how I tested.

I will look into that.
Thanks.
Edit: building Armbian with the CRYPTROOT_ENABLE option works

Hi have send all my changes to the jwrdegoede repository.
 
I haven't merge the last PR just in case someone add some feedback
 
https://github.com/jwrdegoede/rtl8189ES_linux/pull/10
 
Compilation logs
 
https://travis-ci.org/CGarces/rtl8189ES_linux/builds/308135114
 
I'll merge the PR tonight if I not receive negative comments.
 
Feel free to use that new version on Armbian kernel. Unfortunately I can't provide a change log.

Just a follow up
After changing the driver software some places and testing, without any in-depth understanding about this chip, I was not able to stop kernel hang on X-radio wifi driver.
 
I noticed problems with xradio in 2 modes.
1) When using xradio  in AP mode: kernel hang, reboot -f does not work
 
2) Using xradio in concurrent mode: kernel hang
 
In either cases AP mode had the problem.
I decided to stop using the xradio for good after all the testing.
 
I stopped xradio module loading from boot: commented out 'xradio_wlan' from /etc/modules file
I blacklisted xradio driver by adding  'blacklist xradio_wlan' to /etc/modprobe.d/blacklist.conf file
 
After that there were no kernel hangs or 'reboot -f' problems.
 
I use an external wifi module now. I have tested about 8 wifi modules now and I will make another post with my results and experience of them.
Cheers!

If you are familiar with IRC, I would carefully try to get some hints over here: https://linux-sunxi.org/IRC
 

Thanks, @Tido for the links.
 
[20149.090066] [<bfb2d42d>] (wsm_handle_rx [xradio_wlan]) from [<bfb29e05>] (xradio_bh_exchange+0x27c/0x588 [xradio_wlan])
In the error logs, it seems program stalled on wsm_handle_rx in xradio_wlan.
 
I found the official xradio_wlan driver to be fifteenhex
http://linux-sunxi.org/Wifi

 
 
I checked the fifteenhex wlan_driver code for "wsm_handle_rx" and found this line in wsm.c

https://github.com/fifteenhex/xradio/blob/master/wsm.c
 
It seems like kernel hang is done on purpose.
 
After commenting out this section, I recompiled the xradio_wlan.ko module driver and retested.
After running 11 the OrangePi Zeros with the new xradio driver, connected to a router which changes its channel occasionally when multiple devices are connected, 5 OPis stop responding. 
I ran the test overnight. I tested after connecting all OPis through the serial port (COM).
 

 
@zador.blood.stained @Tido @martinayotte any idea how I can further test the driver to stop the kernel hang?
p.s: I am ok with the dropped packets of the driver.
 
Thank You.
 
Sanju.
 
 

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