[FS#284] WRT1900acs, wifi stops workign under havy load

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Carlo (acarlo) 

Attached to Project - LEDE Project
Summary - WRT1900acs, wifi stops workign under havy load
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - mage presenting the issue:

LEDE Reboot r2154
Kernel 4.4.30
WRT1900ACS

Steps to reproduce the issue:

Download via samba a large file that sits on a USB 3.0 HDD attached to the router.

Error logged when the issue is triggered:

Fri Nov 11 12:16:45 2016 kern.err kernel: [ 3412.928447] ieee80211 phy0: cmd 0x9125=BAStream timed out
Fri Nov 11 12:16:45 2016 kern.err kernel: [ 3412.933882] ieee80211 phy0: return code: 0x1125
Fri Nov 11 12:16:45 2016 kern.err kernel: [ 3412.938445] ieee80211 phy0: timeout: 0x1125
Fri Nov 11 12:16:45 2016 kern.err kernel: [ 3412.942655] ieee80211 phy0: destroy ba failed execution
Fri Nov 11 12:20:14 2016 kern.err kernel: [ 3622.093260] ieee80211 phy0: cmd 0x9122=UpdateEncryption timed out
Fri Nov 11 12:20:14 2016 kern.err kernel: [ 3622.099384] ieee80211 phy0: return code: 0x1122
Fri Nov 11 12:20:14 2016 kern.err kernel: [ 3622.103943] ieee80211 phy0: timeout: 0x1122
Fri Nov 11 12:20:14 2016 kern.err kernel: [ 3622.108142] ieee80211 phy0: failed execution
Fri Nov 11 12:20:14 2016 kern.err kernel: [ 3622.112429] wlan0: failed to remove key (0, cc:20:e8:05:b9:2e) from hardware (-5)
Fri Nov 11 12:20:18 2016 kern.err kernel: [ 3626.118772] ieee80211 phy0: cmd 0x9122=UpdateEncryption timed out
Fri Nov 11 12:20:18 2016 kern.err kernel: [ 3626.124912] ieee80211 phy0: return code: 0x1122
Fri Nov 11 12:20:18 2016 kern.err kernel: [ 3626.129460] ieee80211 phy0: timeout: 0x1122
Fri Nov 11 12:20:18 2016 kern.err kernel: [ 3626.133667] ieee80211 phy0: failed execution
Fri Nov 11 12:20:18 2016 kern.err kernel: [ 3626.137954] wlan0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-5)
Fri Nov 11 12:20:22 2016 kern.err kernel: [ 3630.145102] ieee80211 phy0: cmd 0x9122=UpdateEncryption timed out
Fri Nov 11 12:20:22 2016 kern.err kernel: [ 3630.151276] ieee80211 phy0: return code: 0x1122
Fri Nov 11 12:20:22 2016 kern.err kernel: [ 3630.155988] ieee80211 phy0: timeout: 0x1122
Fri Nov 11 12:20:22 2016 kern.err kernel: [ 3630.160196] ieee80211 phy0: failed execution
Fri Nov 11 12:20:22 2016 kern.err kernel: [ 3630.164494] wlan0: failed to set key (1, ff:ff:ff:ff:ff:ff) to hardware (-5)
Fri Nov 11 12:20:26 2016 kern.err kernel: [ 3634.172807] ieee80211 phy0: cmd 0x9122=UpdateEncryption timed out
Fri Nov 11 12:20:26 2016 kern.err kernel: [ 3634.178983] ieee80211 phy0: return code: 0x1122
Fri Nov 11 12:20:26 2016 kern.err kernel: [ 3634.183541] ieee80211 phy0: timeout: 0x1122
Fri Nov 11 12:20:26 2016 kern.err kernel: [ 3634.187745] ieee80211 phy0: failed execution
Fri Nov 11 12:20:26 2016 kern.err kernel: [ 3634.192033] wlan0: failed to remove key (0, a4:5e:60:e7:47:9d) from hardware (-5)
Fri Nov 11 12:20:30 2016 kern.err kernel: [ 3638.196933] ieee80211 phy0: cmd 0x9111=SetNewStation timed out
Fri Nov 11 12:20:30 2016 kern.err kernel: [ 3638.202957] ieee80211 phy0: return code: 0x1111
Fri Nov 11 12:20:30 2016 kern.err kernel: [ 3638.207512] ieee80211 phy0: timeout: 0x1111
Fri Nov 11 12:20:30 2016 kern.err kernel: [ 3638.211712] ieee80211 phy0: failed execution
Fri Nov 11 12:20:30 2016 daemon.info hostapd: wlan0: STA cc:20:e8:05:b9:2e IEEE 802.11: deauthenticated due to local deauth request

The same test works just fine running:

Lede Reboot 1925
Kernel 4.4.24
WRT1900ACS

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=284