[OpenWrt-Devel] ath10k memory leak on 19.07 branch and mikrotik RB952Ui-5ac2nD?

[Joe Ayers]

Attempting to use the hAP ac lite model RB952Ui-5ac2nD with the 5GHz
radio0 802.11ac seems to be unstable and consume available memory.
This is only enabling radio0 with no other changes and bringing wifi
up/down to reproduce.   Am I doing something silly, or should I submit
a bug?

root at OpenWrt:/tmp# cat /etc/openwrt_release
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='19.07-SNAPSHOT'
DISTRIB_REVISION='r10752-1859391e9e'
DISTRIB_TARGET='ar71xx/mikrotik'
DISTRIB_ARCH='mips_24kc'
DISTRIB_DESCRIPTION='OpenWrt 19.07-SNAPSHOT r10752-1859391e9e'
DISTRIB_TAINTS='no-all'
root at OpenWrt:/tmp# free
              total        used        free      shared  buff/cache   available
Mem:          59264       14104       33232        7804       11928       23352
Swap:             0           0           0
root at OpenWrt:/tmp# wifi up
'radio1' is disabled
'radio1' is disabled
root at OpenWrt:/tmp# free
              total        used        free      shared  buff/cache   available
Mem:          59264       19556       24204        7804       15504       16156
Swap:             0           0           0
root at OpenWrt:/tmp# date; free
Tue Nov 26 23:32:37 UTC 2019
              total        used        free      shared  buff/cache   available
Mem:          59264       29768       13984        7804       15512        5944
Swap:             0           0           0
root at OpenWrt:/tmp# date; free
Tue Nov 26 23:32:55 UTC 2019
              total        used        free      shared  buff/cache   available
Mem:          59264       33384       10368        7804       15512        2328
Swap:             0           0           0
root at OpenWrt:/tmp# date; free
Tue Nov 26 23:33:14 UTC 2019
              total        used        free      shared  buff/cache   available
Mem:          59264       37424       10452        7804       11388         304
Swap:             0           0           0
root at OpenWrt:/tmp# wifi down
-ash: can't fork: Out of memory
root at OpenWrt:/tmp# wifi down
-ash: can't fork: Out of memory
root at OpenWrt:/tmp# wifi down
/sbin/wifi: line 188: can't fork: Out of memory
Failed to parse message data
'radio1' is disabled
root at OpenWrt:/tmp# wifi down
Segmentation fault
Failed to parse message data
'radio1' is disabled
root at OpenWrt:/tmp# free
              total        used        free      shared  buff/cache   available
Mem:          59264       39436        8508        7804       11320           0
Swap:             0           0           0
root at OpenWrt:/tmp# wifi down
'radio1' is disabled
root at OpenWrt:/tmp# date; free
Tue Nov 26 23:34:08 UTC 2019
              total        used        free      shared  buff/cache   available
Mem:          59264       13716       33932        7804       11616       23892
Swap:             0           0           0
root at OpenWrt:/tmp#

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