To: linux-wireless@vger.kernel.org, ath10k@lists.infradead.org,
        lede-dev@lists.infradead.org
Cc: agreen@cococorp.com
From: Benjamin Morgan <bmorgan@cococorp.com>
Subject: ath10k firmware crashes in mesh mode on QCA9880
Message-ID: <583DD564.8040704@cococorp.com> (sfid-20161129_202222_020604_6F2A7EEA)
Date: Tue, 29 Nov 2016 11:22:12 -0800
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Sender: linux-wireless-owner@vger.kernel.org

When we try to transmit traffic (ping) between two meshed ath10k devices 
running latest lede we keep experiencing ath10k firmware crashes. This 
seems to only happen when running in 802.11n/ac mode but not in 
802.11a/g mode. Also, from the station dumps it appears that management 
traffic is flowing between the devices, however when we try to send 
unicast data traffic the firmware crashes immediately.

Platform: Archer C7 AC1750 v2
Software Image: LEDE (HEAD, r2299) Commit: 
https://github.com/lede-project/source/commit/d596c21ebd5a3e6ce933eff3e51989031e4b1d58

Crypto: wpa_supplicant
wpa_supplicant-wlan0.conf
network={
ssid="bmorgan_lede_mesh"
key_mgmt=SAE
mode=5
frequency=5180
psk="meshpassword"
}

Backports Verstion:
[    9.818007] Loading modules backported from Linux version 
wt-2016-10-03-1-g6fcb1a6
[    9.825736] Backport generated by backports.git 
backports-20160324-9-g0e38f5c

​​Ath10k Initialization on Station A (dmesg)
[    9.896715] PCI: Enabling device 0000:01:00.0 (0000 -> 0002)
[    9.902622] ath10k_pci 0000:01:00.0: pci irq legacy oper_irq_mode 1 
irq_mode 0 reset_mode 0
[   10.123734] ath10k_pci 0000:01:00.0: Direct firmware load for 
ath10k/pre-cal-pci-0000:01:00.0.bin failed with error -2
[   10.134620] ath10k_pci 0000:01:00.0: Falling back to user helper
[   10.287680] firmware ath10k!pre-cal-pci-0000:01:00.0.bin: 
firmware_loading_store: map pages failed
[   10.622789] ath10k_pci 0000:01:00.0: qca988x hw2.0 target 0x4100016c 
chip_id 0x043202ff sub 0000:0000
[   10.632184] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 1 
tracing 0 dfs 1 testmode 1
[   10.645231] ath10k_pci 0000:01:00.0: firmware ver 10.2.4.70.54 api 5 
features no-p2p,raw-mode,mfp crc32 9d340dd9
[   10.655660] ath10k_pci 0000:01:00.0: Direct firmware load for 
ath10k/QCA988X/hw2.0/board-2.bin failed with error -2
[   10.666264] ath10k_pci 0000:01:00.0: Falling back to user helper
[   10.747925] firmware ath10k!QCA988X!hw2.0!board-2.bin: 
firmware_loading_store: map pages failed
[   11.011123] ath10k_pci 0000:01:00.0: board_file api 1 bmi_id N/A 
crc32 bebc7c08
[   12.155224] ath10k_pci 0000:01:00.0: htt-ver 2.1 wmi-op 5 htt-op 2 
cal file max-sta 128 raw 0 hwcrypto 1

Station A (wlan0):
18:A6:F7:23:6E:66
10.230.5.41

Station B (wlan0):
18:a6:f7:26:0f:21
10.230.5.42

Station Dump on Station A before ping:
Station 18:a6:f7:26:0f:21 (on wlan0)
inactive time:340 ms
rx bytes:2472
rx packets:28
tx bytes:1204
tx packets:9
tx retries:0
tx failed:0
rx drop misc:1
signal: -14 dBm
signal avg:-14 dBm
Toffset:18142530 us
tx bitrate:6.0 MBit/s
rx bitrate:6.0 MBit/s
rx duration:1524 us
mesh llid:0
mesh plid:0
mesh plink:ESTAB
mesh local PS mode:ACTIVE
mesh peer PS mode:UNKNOWN
mesh non-peer PS mode:ACTIVE
authorized:yes
authenticated:yes
associated:yes
preamble:long
WMM/WME:yes
MFP:yes
TDLS peer:no
DTIM period:2
beacon interval:1000
connected time:10 seconds

​Crash Log on Station B (10.230.5.42)
[245.483888] ath10k_pci 0000:01:00.0: firmware crashed! (uuid 
2bab5ee9-08ff-4a17-95b1-636d212acebc)
[245.493020] ath10k_pci 0000:01:00.0: qca988x hw2.0 target 0x4100016c 
chip_id 0x043202ff sub 0000:0000
[245.502384] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 1 tracing 
0 dfs 1 testmode 1
[245.515436] ath10k_pci 0000:01:00.0: firmware ver 10.2.4.70.54 api 5 
features no-p2p,raw-mode,mfp crc32 9d340dd9
[245.525812] ath10k_pci 0000:01:00.0: board_file api 1 bmi_id N/A crc32 
bebc7c08
[245.533232] ath10k_pci 0000:01:00.0: htt-ver 2.1 wmi-op 5 htt-op 2 cal 
file max-sta 128 raw 0 hwcrypto 1
[245.544876] ath10k_pci 0000:01:00.0: firmware register dump:
[245.550633] ath10k_pci 0000:01:00.0: [00]: 0x4100016C 0x000015B3 
0x009A4577 0x00955B31
[245.558676] ath10k_pci 0000:01:00.0: [04]: 0x009A4577 0x00060130 
0x00000002 0x00439E98
[245.566715] ath10k_pci 0000:01:00.0: [08]: 0x0044110C 0x00442074 
0x00407120 0x004436CC
[245.574749] ath10k_pci 0000:01:00.0: [12]: 0x00000009 0x00000000 
0x009A3518 0x009A3526
[245.582793] ath10k_pci 0000:01:00.0: [16]: 0x00958080 0x0094085D 
0x00000000 0x00000000
[245.590836] ath10k_pci 0000:01:00.0: [20]: 0x409A4577 0x0040AAC4 
0x0040AC60 0x0040AC09
[245.598882] ath10k_pci 0000:01:00.0: [24]: 0x809A44BA 0x0040AB24 
0x00400000 0xC09A4577
[245.606923] ath10k_pci 0000:01:00.0: [28]: 0x809A39DE 0x0040AB84 
0x0044110C 0x00442074
[245.614955] ath10k_pci 0000:01:00.0: [32]: 0x809A5FE2 0x0040ABB4 
0x0044110C 0x00407120
[245.623000] ath10k_pci 0000:01:00.0: [36]: 0x809A2E6C 0x0040ABF4 
0x0040AC14 0x00001580
[245.631043] ath10k_pci 0000:01:00.0: [40]: 0x80990F6F 0x0040AD04 
0x009C643C 0x004436CC
[245.639086] ath10k_pci 0000:01:00.0: [44]: 0x80998510 0x0040AD64 
0x004208FC 0x00439E4C
[245.647129] ath10k_pci 0000:01:00.0: [48]: 0x8099AE95 0x0040AD84 
0x004208FC 0x00425404
[245.655170] ath10k_pci 0000:01:00.0: [52]: 0x809BFC55 0x0040AEE4 
0x00424FE8 0x00000002
[245.663198] ath10k_pci 0000:01:00.0: [56]: 0x80940F18 0x0040AF14 
0x00000004 0x004039D0
[245.767023] ieee80211 phy0: Hardware restart was requested
[245.772655] ath10k_pci 0000:01:00.0: failed to synchronize monitor vdev 
1 stop: -143
[245.780542] ath10k_pci 0000:01:00.0: failed to stop monitor vdev: -143
​
With wpa_supplicant turned off:

Station Dump on Station A before ping:
Station 18:a6:f7:26:0f:21 (on wlan0)
inactive time:60 ms
rx bytes:3874
rx packets:67
tx bytes:707
tx packets:7
tx retries:0
tx failed:1
rx drop misc:3
signal: -14 dBm
signal avg:-14 dBm
Toffset:18446744073684250999 us
tx bitrate:6.0 MBit/s
rx bitrate:6.0 MBit/s
rx duration:1312 us
mesh llid:24953
mesh plid:59412
mesh plink:ESTAB
mesh local PS mode:ACTIVE
mesh peer PS mode:UNKNOWN
mesh non-peer PS mode:ACTIVE
authorized:yes
authenticated:yes
associated:yes
preamble:long
WMM/WME:yes
MFP:no
TDLS peer:no
DTIM period:2
beacon interval:1000
short slot time:yes
connected time:33 seconds

Firmware crash on Station A (10.230.5.41)
[ 1040.984599] ath10k_pci 0000:01:00.0: firmware crashed! (uuid 
42d4f6dc-0e89-4505-aefb-58cbb70d0dce)
[ 1040.993732] ath10k_pci 0000:01:00.0: qca988x hw2.0 target 0x4100016c 
chip_id 0x043202ff sub 0000:0000
[ 1041.003100] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 1 
tracing 0 dfs 1 testmode 1
[ 1041.016144] ath10k_pci 0000:01:00.0: firmware ver 10.2.4.70.54 api 5 
features no-p2p,raw-mode,mfp crc32 9d340dd9
[ 1041.026523] ath10k_pci 0000:01:00.0: board_file api 1 bmi_id N/A 
crc32 bebc7c08
[ 1041.033940] ath10k_pci 0000:01:00.0: htt-ver 2.1 wmi-op 5 htt-op 2 
cal file max-sta 128 raw 0 hwcrypto 1
[ 1041.045593] ath10k_pci 0000:01:00.0: firmware register dump:
[ 1041.051336] ath10k_pci 0000:01:00.0: [00]: 0x4100016C 0x000015B3 
0x009A4577 0x00955B31
[ 1041.059383] ath10k_pci 0000:01:00.0: [04]: 0x009A4577 0x00060130 
0x00000001 0x00435354
[ 1041.067424] ath10k_pci 0000:01:00.0: [08]: 0x0044110C 0x00442074 
0x00407120 0x004436CC
[ 1041.075463] ath10k_pci 0000:01:00.0: [12]: 0x00000009 0x00000000 
0x009A43A0 0x009A43DE
[ 1041.083490] ath10k_pci 0000:01:00.0: [16]: 0x00958080 0x0094085D 
0x00000000 0x00000000
[ 1041.091535] ath10k_pci 0000:01:00.0: [20]: 0x409A4577 0x0040AAC4 
0x0040AC60 0x0040AC09
[ 1041.099579] ath10k_pci 0000:01:00.0: [24]: 0x809A44BA 0x0040AB24 
0x00955A00 0xC09A4577
[ 1041.107622] ath10k_pci 0000:01:00.0: [28]: 0x809A39DE 0x0040AB84 
0x0044110C 0x00442074
[ 1041.115661] ath10k_pci 0000:01:00.0: [32]: 0x809A5FE2 0x0040ABB4 
0x0044110C 0x00407120
[ 1041.123689] ath10k_pci 0000:01:00.0: [36]: 0x809A2E6C 0x0040ABF4 
0x0040AC10 0x00001580
[ 1041.131733] ath10k_pci 0000:01:00.0: [40]: 0x80990F6F 0x0040AD04 
0x009C643C 0x004436CC
[ 1041.139777] ath10k_pci 0000:01:00.0: [44]: 0x80998510 0x0040AD64 
0x004208FC 0x00439E4C
[ 1041.147820] ath10k_pci 0000:01:00.0: [48]: 0x8099AE95 0x0040AD84 
0x004208FC 0x00425758
[ 1041.155860] ath10k_pci 0000:01:00.0: [52]: 0x809BFC55 0x0040AEE4 
0x00424FE8 0x00000002
[ 1041.163888] ath10k_pci 0000:01:00.0: [56]: 0x80940F18 0x0040AF14 
0x00000004 0x004039D0
[ 1041.267025] ieee80211 phy0: Hardware restart was requested
[ 1041.272656] ath10k_pci 0000:01:00.0: failed to synchronize monitor 
vdev 1 stop: -143
[ 1041.280545] ath10k_pci 0000:01:00.0: failed to stop monitor vdev: -143

​
Thanks in advance for your time and help,

~Benjamin