[Fire TV General] xenyz:
So today, it was time to have a second look. This time, looking in the logcat I noticed a very bizarre error:

E/wpa_supplicant( 1460): Could not unlink existing ctrl_iface socket '/data/misc/wifi/sockets/wlan0': No such file or directory
E/wpa_supplicant( 1460): Failed to initialize control interface '/data/misc/wifi/sockets'.
E/wpa_supplicant( 1460): You may have another wpa_supplicant process already running or the file was
E/wpa_supplicant( 1460): left by an unclean termination of wpa_supplicant in which case you will need
E/wpa_supplicant( 1460): to manually remove this file before starting wpa_supplicant again.
I/ValidateNoPeople( 1072): skipping global notification
D/VendorDisplayManagerGlobalCallback( 1562): callGetInstance: nil
E/WifiHW ( 1072): Unable to open connection to supplicant on "@android:wpa_wlan0": No space left on device

I went into /data/misc/wifi, deleted sockets, and rebooted, hoping the system would re-initialize the iface socket dir. No luck. I then looked even closer at the logcat: 'no space left on device'? What! It says right in the system applications menu Fire stick has 1.5 GB free disk space. I even confirmed it to be sure:

[root@montoya:/ # df
Filesystem Size Used Free Blksize
/dev 245.6M 40.0K 245.5M 4096
/sys/fs/cgroup 245.6M 0.0K 245.6M 4096
/mnt/asec 245.6M 0.0K 245.6M 4096
/mnt/obb 245.6M 0.0K 245.6M 4096
/tmp 245.6M 0.0K 245.6M 4096
/system 773.6M 542.6M 231.0M 4096
/data 5.6G 4.1G 1.5G 4096
/cache 773.6M 274.6M 499.0M 4096
/persist 7.6M 4.3M 3.3M 4096
/mnt/shell/emulated 5.6G 4.1G 1.5G 4096
/storage/emulated 245.6M 0.0K 245.6M 4096
/storage/emulated/0 5.6G 4.1G 1.5G 4096
/storage/emulated/0/Android/obb 5.6G 4.1G 1.5G 4096
/storage/emulated/legacy 5.6G 4.1G 1.5G 4096
/storage/emulated/legacy/Android/obb 5.6G 4.1G 1.5G 4096

Something bizarre... filesystem corruption perhaps? Crappy flash storage wearing out too quickly? Unfortunately there's no fsck.ext4 on the system, nor a way to even run it to let it do its thing without recovery, but I couldn't even do a scan.

I thought of freeing up a bit of space just to make sure, so I went and cleared the cache of some apps, deleting some temp files in /sdcard/Downloads, etc.

Something was really wrong: the free space reported by the Fire Stick, and the total being used up by all the apps was way off. Something was using disk space, and a lot of it.

I started poking around in /data to find the culprit. I ran a 'du -h' in /data to get a report as to where this space went, watching the screen fly by and twiddling my thumbs...

[...]
4.0K	./com.android.externalstorage/cache
8.0K	./com.android.externalstorage
4.0K	./com.android.systemui/cache
8.0K	./com.android.systemui
4.0K	./com.android.location.fused
4.0K	./com.android.managedprovisioning/cache
4.0K	./com.android.managedprovisioning/files
12K	./com.android.managedprovisioning
4.0K	./com.android.onetimeinitializer/cache
8.0K	./com.android.onetimeinitializer/shared_prefs
16K	./com.android.onetimeinitializer
4.0K	./com.android.proxyhandler
4.0K	./com.android.shell
8.0K	./com.kingouser.com/cache/org.chromium.android_webview/index-dir
32K	./com.kingouser.com/cache/org.chromium.android_webview
36K	./com.kingouser.com/cache
404K	./com.kingouser.com/databases
64K	./com.kingouser.com/shared_prefs

and boom, nothing. Stopped. Locked. I really thought the sdcard/filesystem was corrupt at this point, and it just couldn't read sectors any longer. I was about to give up, when the screen came back to life, about three minutes (!) later:

[b]1.3G	./com.kingouser.com/files/activesu[/b]
188K	./com.kingouser.com/files/systemoruser
60K	./com.kingouser.com/files/app
1.3G	./com.kingouser.com/files
4.0K	./com.kingouser.com/requests
16K	./com.kingouser.com/logs
4.0K	./com.kingouser.com/app_webview/paks
68K	./com.kingouser.com/app_webview
1.3G	./com.kingouser.com
4.0K	./com.android.vpndialogs
4.0K	./com.android.wallpapercropper
4.0K	./com.amazon.wcast.sink/cache
12K	./com.amazon.wcast.sink/shared_prefs
4.0K	./com.amazon.wcast.sink/files
24K	./com.amazon.wcast.sink
4.0K	./com.amazon.device.sync.sdk.internal
4.0K	./com.amazon.fireinputdevices
4.0K	./com.amazon.kindleautomatictimezone/cache
8.0K	./com.amazon.kindleautomatictimezone/shared_prefs
16K	./com.amazon.kindleautomatictimezone
4.0K	./com.amazon.ods.kindleconnect/cache
8.0K	./com.amazon.ods.kindleconnect
4.0K	./com.amazon.precog/cache
176K	./com.amazon.precog/files
184K	./com.amazon.precog
[...]

Here is a folder (with ZERO Google results (!?) ) that is 1.3 GB in size, with I-didn't-wait-long-enough-to-find-out-how-many files, almost all 338 bytes each, all with numeric names :

[spoilers]

root@montoya:/data/user/0/com.kingouser.com/files/activesu # ls -l
-rw------- u0_a21 u0_a21 626 1970-01-01 19:01 1471827349222
-rw------- u0_a21 u0_a21 338 2016-09-17 21:51 1471936523207
-rw------- u0_a21 u0_a21 338 2016-09-17 21:51 1472195743579
-rw------- u0_a21 u0_a21 338 2016-09-17 21:51 1472195743651
-rw------- u0_a21 u0_a21 338 2016-09-17 21:51 1472714150582
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:51 1472714150813
-rw------- u0_a21 u0_a21 338 2016-09-17 21:51 1473146238917
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1473925626872
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1473925626882
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098408470
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098408480
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098408489
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098408542
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409895
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409914
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409918
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409938
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409943
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409947
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409952
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409959
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409968
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098409973
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-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410002
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410007
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410013
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410020
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410028
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410032
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410042
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410047
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410051
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410057
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410063
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410068
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410076
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410081
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410094
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410099
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410103
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410108
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410112
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410117
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410121
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410129
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410137
-rw------- u0_a21 u0_a21 338 2016-09-17 21:52 1474098410142
[...]

[/spoilers]

Entire Contents of a random file I chose:

49b9f5d46c386bd562e8d49c9c5ba3a018f4752ef56ae9f8befde0355d3d7021508c49118c72997eda142d4c63
9df6c7882b922600c1c96d0154631491224846c48809360d44f8eaec1e4520161accc8722c001dcf1da0cae893

Kingoroot app (not Superuser) used up the entire inode table creating (millions?) small files, leaving the system unable to create necessary files for networking on boot.

I think some may get a kick out of this:

root@montoya:/data/user/0/com.kingouser.com/files/activesu # rm -r *
[b]tmp-mksh: rm: Argument list too long[/b]

Uh..

1|root@montoya:/data/user/0/com.kingouser.com/files/activesu # cd ..
root@montoya:/data/user/0/com.kingouser.com/files # ls -l
drwx------ u0_a21 u0_a21 2016-11-16 17:30 activesu
drwx------ u0_a21 u0_a21 2016-09-27 22:20 app
-rwxr-xr-x u0_a21 u0_a21 17688 2016-08-21 20:55 config
-rw-rw---- u0_a21 u0_a21 36 2016-08-21 20:55 gaClientId
-rw------- u0_a21 u0_a21 1060 1970-01-01 19:03 mylog
-rw------- u0_a21 u0_a21 256 1970-01-01 19:02 request_log
-rw------- root root 293 1970-01-01 19:02 supersu.cfg
drwx------ u0_a21 u0_a21 2016-10-24 09:31 systemoruser
root@montoya:/data/user/0/com.kingouser.com/files # rm -r activesu/
root@montoya:/data/user/0/com.kingouser.com/files # mkdir activesu
root@montoya:/data/user/0/com.kingouser.com/files # chown u0_a21:u0_a21 activesu/

(at this point I just wanted it working, so I put the dir/problem back in place).

Did a reboot, network back up, signed into my wireless, put everything back to how it was before I started, beer(s).

The one thing I am grateful for is that the bluetooth stack didn't depend on the same type of setup, otherwise the remote would have been dead and I would have thought it was obvious major hardware failure, power surge most likely. Cheers for that.