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hostapd not working anymore


Why is hostapd not working?hostapd, rtl8192se and wpa not working: EAPOL-Key TimeoutHow to link hostapd to physical wireless card via ethernet?Linux Hostapd registers as WEP, but I want WPA2-PSKHostapd with ACS not working due to not collecting survey datahostapd Wired 802.1x with BridgeHow to redirect a URL from hostapd without internet access?Windows 10 clients can't connect to HostAPDHostapd - Download speed artificially limited?Configure hostapd to accept password multiple WPA2 PSKs






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1















I had a working hostapd file and a functioning wifi hotspot (device is busybox, iMX6 board). While the hotspot was up and running, I was doing manual routing connected to the device via ssh (I'm able to connect this device via another device's access point, I first connect to the access point using my PC and then ssh into the aforementioned device). However, during my last command, ssh got stuck, hence I decided to power cycle.



After the power cycle, the previous commands (which used to work everytime, even after power cycles) does not work anymore. Here is how I normally would setup the hotspot.



First I would create a virtual interface from wlan0, which is active on startup.



iw dev wlan0 interface add wlan0_ap2 type managed addr 12:34:56:78:ab:ce


wlan0 interface is also what allows me to ssh into this device. wlan0 is connected to wlan0-ap of another board. My PC is also connected to wlan0-ap network. After ssh'ing into the device, I would start hostapd config like so:



hostapd -dd /etc/hostapd_build_ap.conf


After that, hotstop would be detectable and connectable by external devices. I do not normally setup a dhcp server, static IP is okay for me.



Here is the hostapd_build_ap.conf file:



interface=wlan0_ap2
#bridge=br0
ssid=myhotspot
driver=nl80211
country_code=US
hw_mode=g
channel=10
max_num_sta=5
wpa=2
auth_algs=1
wpa_passphrase=ABABABABAB
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP


After certain routings are done via "route add ..."



I would normally be able to use both devices as access points connected to each other. Yet, after my last routing, like said, ssh got inresponsive and I had to power cycle. (There is no other way of accessing the device at the moment)



Now, when I try to start hostapd, I get this:



random: Trying to read entropy from /dev/random
Configuration file: /etc/hostapd_build_ap.conf
rfkill: Cannot open RFKILL control device
nl80211: RFKILL status not available
nl80211: TDLS supported
nl80211: TDLS external setup
nl80211: Supported cipher 00-0f-ac:1
nl80211: Supported cipher 00-0f-ac:5
nl80211: Supported cipher 00-0f-ac:2
nl80211: Supported cipher 00-0f-ac:4
nl80211: Supported cipher 00-0f-ac:10
nl80211: Supported cipher 00-0f-ac:8
nl80211: Supported cipher 00-0f-ac:9
nl80211: Supported cipher 00-0f-ac:6
nl80211: Supported cipher 00-0f-ac:13
nl80211: Supported cipher 00-0f-ac:11
nl80211: Supported cipher 00-0f-ac:12
nl80211: Using driver-based off-channel TX
nl80211: Use separate P2P group interface (driver advertised support)
nl80211: interface wlan0_ap2 in phy phy0
nl80211: Set mode ifindex 4 iftype 3 (AP)
nl80211: Setup AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
nl80211: Subscribe to mgmt frames with AP handle 0x57d950
nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0x57d950 match=
nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0x57d950 match=
nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0x57d950 match=
nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0x57d950 match=
nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0x57d950 match=
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x57d950 match=
nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0x57d950 match=
nl80211: Add own interface ifindex 4
nl80211: if_indices[16]: 4
phy: phy0
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
wlan0_ap2: interface state UNINITIALIZED->COUNTRY_UPDATE
Previous country code 98, new country code US
Continue interface setup after channel list update
ctrl_iface not configured!
random: Got 20/20 bytes from /dev/random
nl80211: Event message available
nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff d0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
nl80211: Frame event
nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6dd0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
nl80211: Event message available
nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff f0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
nl80211: Frame event
nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6df0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
nl80211: Event message available
nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 00 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
nl80211: Frame event
nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-37 fc=0x40 seq_ctrl=0x6e00 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
nl80211: Event message available
nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 50 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
nl80211: Frame event
nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-41 fc=0x40 seq_ctrl=0x6e50 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
Channel list update timeout - try to continue anyway
nl80211: Regulatory information - country=98
nl80211: 2402-2482 @ 40 MHz 20 mBm
nl80211: 5170-5250 @ 80 MHz 23 mBm
nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS)
nl80211: 5735-5835 @ 80 MHz 30 mBm
nl80211: Added 802.11b mode based on 802.11g information
Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=12 freq=2467 MHz max_tx_power=20 dBm
Allowed channel: mode=1 chan=13 freq=2472 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=12 freq=2467 MHz max_tx_power=20 dBm
Allowed channel: mode=0 chan=13 freq=2472 MHz max_tx_power=20 dBm
Completing interface initialization
Mode: IEEE 802.11g Channel: 10 Frequency: 2457 MHz
DFS 0 channels required radar detection
nl80211: Set freq 2457 (ht_enabled=0, vht_enabled=0, bandwidth=20 MHz, cf1=2457 MHz, cf2=0 MHz)
* freq=2457
* vht_enabled=0
* ht_enabled=0
RATE[0] rate=10 flags=0x1
RATE[1] rate=20 flags=0x1
RATE[2] rate=55 flags=0x1
RATE[3] rate=110 flags=0x1
RATE[4] rate=60 flags=0x0
RATE[5] rate=90 flags=0x0
RATE[6] rate=120 flags=0x0
RATE[7] rate=180 flags=0x0
RATE[8] rate=240 flags=0x0
RATE[9] rate=360 flags=0x0
RATE[10] rate=480 flags=0x0
RATE[11] rate=540 flags=0x0
hostapd_setup_bss(hapd=0x57cf48 (wlan0_ap2), first=1)
wlan0_ap2: Flushing old station entries
nl80211: flush -> DEL_STATION wlan0_ap2 (all)
wlan0_ap2: Deauthenticate all stations
nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
nl80211: send_mlme -> send_frame
nl80211: send_frame - Use bss->freq=2457
nl80211: send_frame -> send_frame_cmd
nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 02 00
nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
Using interface wlan0_ap2 with hwaddr 12:34:56:78:ab:ce and ssid "myhotspot"
Deriving WPA PSK based on passphrase
SSID - hexdump_ascii(len=9):
6d 79 68 6f 74 73 70 6f 74 myhotspot
PSK (ASCII passphrase) - hexdump_ascii(len=10): [REMOVED]
PSK (from passphrase) - hexdump(len=32): [REMOVED]
Get randomness: len=32 entropy=108
GMK - hexdump(len=32): [REMOVED]
Get randomness: len=32 entropy=76
Key Counter - hexdump(len=32): [REMOVED]
WPA: Delay group state machine start until Beacon frames have been configured
nl80211: Set beacon (beacon_set=0)
nl80211: Beacon head - hexdump(len=60): 80 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 00 00 00 00 00 00 00 00 64 00 11 04 00 09 6d 79 68 6f 74 73 70 6f 74 01 08 82 84 8b 96 0c 12 18 24 03 01 0a
nl80211: Beacon tail - hexdump(len=41): 2a 01 04 32 04 30 48 60 6c 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 02 00 00 7f 08 00 00 00 00 00 00 00 40
nl80211: ifindex=4
nl80211: beacon_int=100
nl80211: dtim_period=2
nl80211: ssid - hexdump_ascii(len=9):
6d 79 68 6f 74 73 70 6f 74 myhotspot
* beacon_int=100
nl80211: hidden SSID not in use
nl80211: privacy=1
nl80211: auth_algs=0x1
nl80211: wpa_version=0x2
nl80211: key_mgmt_suites=0x2
nl80211: pairwise_ciphers=0x18
nl80211: group_cipher=0x10
nl80211: SMPS mode - off
nl80211: beacon_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
nl80211: proberesp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
nl80211: assocresp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
nl80211: Beacon set failed: -16 (Device or resource busy)
Failed to set beacon parameters
wlan0_ap2: Flushing old station entries
nl80211: flush -> DEL_STATION wlan0_ap2 (all)
wlan0_ap2: Deauthenticate all stations
nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
nl80211: send_mlme -> send_frame
nl80211: send_frame - Use bss->freq=2457
nl80211: send_frame -> send_frame_cmd
nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
hostapd_free_hapd_data(wlan0_ap2)
Interface initialization failed
wlan0_ap2: interface state COUNTRY_UPDATE->DISABLED
wlan0_ap2: AP-DISABLED
hostapd_interface_deinit_free(0x57c308)
hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1
hostapd_interface_deinit(0x57c308)
wlan0_ap2: interface state DISABLED->DISABLED
hostapd_bss_deinit: deinit bss wlan0_ap2
wlan0_ap2: Deauthenticate all stations
nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
nl80211: send_mlme -> send_frame
nl80211: send_frame - Use bss->freq=2457
nl80211: send_frame -> send_frame_cmd
nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
wlan0_ap2: AP-DISABLED
hostapd_cleanup(hapd=0x57cf48 (wlan0_ap2))
hostapd_free_hapd_data: Interface wlan0_ap2 wasn't started
hostapd_interface_deinit_free: driver=0x977b0 drv_priv=0x57d818 -> hapd_deinit
nl80211: deinit ifname=wlan0_ap2 disabled_11b_rates=0
nl80211: Remove monitor interface: refcount=0
nl80211: Remove beacon (ifindex=4)
netlink: Operstate: ifindex=4 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP)
nl80211: Set mode ifindex 4 iftype 2 (STATION)
nl80211: Teardown AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
nl80211: Unsubscribe mgmt frames handle 0x88df51d9 (AP teardown)
hostapd_interface_free(0x57c308)
hostapd_interface_free: free hapd 0x57cf48
hostapd_cleanup_iface(0x57c308)
hostapd_cleanup_iface_partial(0x57c308)
hostapd_cleanup_iface: free iface=0x57c308


Could it be that hostapd got corrupted during power cycle? What could be the cause of this?



Does the problem start here?



nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)









share|improve this question




























    1















    I had a working hostapd file and a functioning wifi hotspot (device is busybox, iMX6 board). While the hotspot was up and running, I was doing manual routing connected to the device via ssh (I'm able to connect this device via another device's access point, I first connect to the access point using my PC and then ssh into the aforementioned device). However, during my last command, ssh got stuck, hence I decided to power cycle.



    After the power cycle, the previous commands (which used to work everytime, even after power cycles) does not work anymore. Here is how I normally would setup the hotspot.



    First I would create a virtual interface from wlan0, which is active on startup.



    iw dev wlan0 interface add wlan0_ap2 type managed addr 12:34:56:78:ab:ce


    wlan0 interface is also what allows me to ssh into this device. wlan0 is connected to wlan0-ap of another board. My PC is also connected to wlan0-ap network. After ssh'ing into the device, I would start hostapd config like so:



    hostapd -dd /etc/hostapd_build_ap.conf


    After that, hotstop would be detectable and connectable by external devices. I do not normally setup a dhcp server, static IP is okay for me.



    Here is the hostapd_build_ap.conf file:



    interface=wlan0_ap2
    #bridge=br0
    ssid=myhotspot
    driver=nl80211
    country_code=US
    hw_mode=g
    channel=10
    max_num_sta=5
    wpa=2
    auth_algs=1
    wpa_passphrase=ABABABABAB
    wpa_key_mgmt=WPA-PSK
    wpa_pairwise=TKIP
    rsn_pairwise=CCMP


    After certain routings are done via "route add ..."



    I would normally be able to use both devices as access points connected to each other. Yet, after my last routing, like said, ssh got inresponsive and I had to power cycle. (There is no other way of accessing the device at the moment)



    Now, when I try to start hostapd, I get this:



    random: Trying to read entropy from /dev/random
    Configuration file: /etc/hostapd_build_ap.conf
    rfkill: Cannot open RFKILL control device
    nl80211: RFKILL status not available
    nl80211: TDLS supported
    nl80211: TDLS external setup
    nl80211: Supported cipher 00-0f-ac:1
    nl80211: Supported cipher 00-0f-ac:5
    nl80211: Supported cipher 00-0f-ac:2
    nl80211: Supported cipher 00-0f-ac:4
    nl80211: Supported cipher 00-0f-ac:10
    nl80211: Supported cipher 00-0f-ac:8
    nl80211: Supported cipher 00-0f-ac:9
    nl80211: Supported cipher 00-0f-ac:6
    nl80211: Supported cipher 00-0f-ac:13
    nl80211: Supported cipher 00-0f-ac:11
    nl80211: Supported cipher 00-0f-ac:12
    nl80211: Using driver-based off-channel TX
    nl80211: Use separate P2P group interface (driver advertised support)
    nl80211: interface wlan0_ap2 in phy phy0
    nl80211: Set mode ifindex 4 iftype 3 (AP)
    nl80211: Setup AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
    nl80211: Subscribe to mgmt frames with AP handle 0x57d950
    nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0x57d950 match=
    nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0x57d950 match=
    nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0x57d950 match=
    nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0x57d950 match=
    nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0x57d950 match=
    nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x57d950 match=
    nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0x57d950 match=
    nl80211: Add own interface ifindex 4
    nl80211: if_indices[16]: 4
    phy: phy0
    BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
    wlan0_ap2: interface state UNINITIALIZED->COUNTRY_UPDATE
    Previous country code 98, new country code US
    Continue interface setup after channel list update
    ctrl_iface not configured!
    random: Got 20/20 bytes from /dev/random
    nl80211: Event message available
    nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
    nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
    nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff d0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
    nl80211: Frame event
    nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6dd0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
    nl80211: Event message available
    nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
    nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
    nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff f0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
    nl80211: Frame event
    nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6df0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
    nl80211: Event message available
    nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
    nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
    nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 00 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
    nl80211: Frame event
    nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-37 fc=0x40 seq_ctrl=0x6e00 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
    nl80211: Event message available
    nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
    nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
    nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 50 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
    nl80211: Frame event
    nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-41 fc=0x40 seq_ctrl=0x6e50 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
    Channel list update timeout - try to continue anyway
    nl80211: Regulatory information - country=98
    nl80211: 2402-2482 @ 40 MHz 20 mBm
    nl80211: 5170-5250 @ 80 MHz 23 mBm
    nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS)
    nl80211: 5735-5835 @ 80 MHz 30 mBm
    nl80211: Added 802.11b mode based on 802.11g information
    Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=12 freq=2467 MHz max_tx_power=20 dBm
    Allowed channel: mode=1 chan=13 freq=2472 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=12 freq=2467 MHz max_tx_power=20 dBm
    Allowed channel: mode=0 chan=13 freq=2472 MHz max_tx_power=20 dBm
    Completing interface initialization
    Mode: IEEE 802.11g Channel: 10 Frequency: 2457 MHz
    DFS 0 channels required radar detection
    nl80211: Set freq 2457 (ht_enabled=0, vht_enabled=0, bandwidth=20 MHz, cf1=2457 MHz, cf2=0 MHz)
    * freq=2457
    * vht_enabled=0
    * ht_enabled=0
    RATE[0] rate=10 flags=0x1
    RATE[1] rate=20 flags=0x1
    RATE[2] rate=55 flags=0x1
    RATE[3] rate=110 flags=0x1
    RATE[4] rate=60 flags=0x0
    RATE[5] rate=90 flags=0x0
    RATE[6] rate=120 flags=0x0
    RATE[7] rate=180 flags=0x0
    RATE[8] rate=240 flags=0x0
    RATE[9] rate=360 flags=0x0
    RATE[10] rate=480 flags=0x0
    RATE[11] rate=540 flags=0x0
    hostapd_setup_bss(hapd=0x57cf48 (wlan0_ap2), first=1)
    wlan0_ap2: Flushing old station entries
    nl80211: flush -> DEL_STATION wlan0_ap2 (all)
    wlan0_ap2: Deauthenticate all stations
    nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
    nl80211: send_mlme -> send_frame
    nl80211: send_frame - Use bss->freq=2457
    nl80211: send_frame -> send_frame_cmd
    nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
    CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 02 00
    nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
    Using interface wlan0_ap2 with hwaddr 12:34:56:78:ab:ce and ssid "myhotspot"
    Deriving WPA PSK based on passphrase
    SSID - hexdump_ascii(len=9):
    6d 79 68 6f 74 73 70 6f 74 myhotspot
    PSK (ASCII passphrase) - hexdump_ascii(len=10): [REMOVED]
    PSK (from passphrase) - hexdump(len=32): [REMOVED]
    Get randomness: len=32 entropy=108
    GMK - hexdump(len=32): [REMOVED]
    Get randomness: len=32 entropy=76
    Key Counter - hexdump(len=32): [REMOVED]
    WPA: Delay group state machine start until Beacon frames have been configured
    nl80211: Set beacon (beacon_set=0)
    nl80211: Beacon head - hexdump(len=60): 80 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 00 00 00 00 00 00 00 00 64 00 11 04 00 09 6d 79 68 6f 74 73 70 6f 74 01 08 82 84 8b 96 0c 12 18 24 03 01 0a
    nl80211: Beacon tail - hexdump(len=41): 2a 01 04 32 04 30 48 60 6c 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 02 00 00 7f 08 00 00 00 00 00 00 00 40
    nl80211: ifindex=4
    nl80211: beacon_int=100
    nl80211: dtim_period=2
    nl80211: ssid - hexdump_ascii(len=9):
    6d 79 68 6f 74 73 70 6f 74 myhotspot
    * beacon_int=100
    nl80211: hidden SSID not in use
    nl80211: privacy=1
    nl80211: auth_algs=0x1
    nl80211: wpa_version=0x2
    nl80211: key_mgmt_suites=0x2
    nl80211: pairwise_ciphers=0x18
    nl80211: group_cipher=0x10
    nl80211: SMPS mode - off
    nl80211: beacon_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
    nl80211: proberesp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
    nl80211: assocresp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
    nl80211: Beacon set failed: -16 (Device or resource busy)
    Failed to set beacon parameters
    wlan0_ap2: Flushing old station entries
    nl80211: flush -> DEL_STATION wlan0_ap2 (all)
    wlan0_ap2: Deauthenticate all stations
    nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
    nl80211: send_mlme -> send_frame
    nl80211: send_frame - Use bss->freq=2457
    nl80211: send_frame -> send_frame_cmd
    nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
    CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
    nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
    wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
    hostapd_free_hapd_data(wlan0_ap2)
    Interface initialization failed
    wlan0_ap2: interface state COUNTRY_UPDATE->DISABLED
    wlan0_ap2: AP-DISABLED
    hostapd_interface_deinit_free(0x57c308)
    hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1
    hostapd_interface_deinit(0x57c308)
    wlan0_ap2: interface state DISABLED->DISABLED
    hostapd_bss_deinit: deinit bss wlan0_ap2
    wlan0_ap2: Deauthenticate all stations
    nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
    nl80211: send_mlme -> send_frame
    nl80211: send_frame - Use bss->freq=2457
    nl80211: send_frame -> send_frame_cmd
    nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
    CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
    nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
    wlan0_ap2: AP-DISABLED
    hostapd_cleanup(hapd=0x57cf48 (wlan0_ap2))
    hostapd_free_hapd_data: Interface wlan0_ap2 wasn't started
    hostapd_interface_deinit_free: driver=0x977b0 drv_priv=0x57d818 -> hapd_deinit
    nl80211: deinit ifname=wlan0_ap2 disabled_11b_rates=0
    nl80211: Remove monitor interface: refcount=0
    nl80211: Remove beacon (ifindex=4)
    netlink: Operstate: ifindex=4 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP)
    nl80211: Set mode ifindex 4 iftype 2 (STATION)
    nl80211: Teardown AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
    nl80211: Unsubscribe mgmt frames handle 0x88df51d9 (AP teardown)
    hostapd_interface_free(0x57c308)
    hostapd_interface_free: free hapd 0x57cf48
    hostapd_cleanup_iface(0x57c308)
    hostapd_cleanup_iface_partial(0x57c308)
    hostapd_cleanup_iface: free iface=0x57c308


    Could it be that hostapd got corrupted during power cycle? What could be the cause of this?



    Does the problem start here?



    nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)









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      I had a working hostapd file and a functioning wifi hotspot (device is busybox, iMX6 board). While the hotspot was up and running, I was doing manual routing connected to the device via ssh (I'm able to connect this device via another device's access point, I first connect to the access point using my PC and then ssh into the aforementioned device). However, during my last command, ssh got stuck, hence I decided to power cycle.



      After the power cycle, the previous commands (which used to work everytime, even after power cycles) does not work anymore. Here is how I normally would setup the hotspot.



      First I would create a virtual interface from wlan0, which is active on startup.



      iw dev wlan0 interface add wlan0_ap2 type managed addr 12:34:56:78:ab:ce


      wlan0 interface is also what allows me to ssh into this device. wlan0 is connected to wlan0-ap of another board. My PC is also connected to wlan0-ap network. After ssh'ing into the device, I would start hostapd config like so:



      hostapd -dd /etc/hostapd_build_ap.conf


      After that, hotstop would be detectable and connectable by external devices. I do not normally setup a dhcp server, static IP is okay for me.



      Here is the hostapd_build_ap.conf file:



      interface=wlan0_ap2
      #bridge=br0
      ssid=myhotspot
      driver=nl80211
      country_code=US
      hw_mode=g
      channel=10
      max_num_sta=5
      wpa=2
      auth_algs=1
      wpa_passphrase=ABABABABAB
      wpa_key_mgmt=WPA-PSK
      wpa_pairwise=TKIP
      rsn_pairwise=CCMP


      After certain routings are done via "route add ..."



      I would normally be able to use both devices as access points connected to each other. Yet, after my last routing, like said, ssh got inresponsive and I had to power cycle. (There is no other way of accessing the device at the moment)



      Now, when I try to start hostapd, I get this:



      random: Trying to read entropy from /dev/random
      Configuration file: /etc/hostapd_build_ap.conf
      rfkill: Cannot open RFKILL control device
      nl80211: RFKILL status not available
      nl80211: TDLS supported
      nl80211: TDLS external setup
      nl80211: Supported cipher 00-0f-ac:1
      nl80211: Supported cipher 00-0f-ac:5
      nl80211: Supported cipher 00-0f-ac:2
      nl80211: Supported cipher 00-0f-ac:4
      nl80211: Supported cipher 00-0f-ac:10
      nl80211: Supported cipher 00-0f-ac:8
      nl80211: Supported cipher 00-0f-ac:9
      nl80211: Supported cipher 00-0f-ac:6
      nl80211: Supported cipher 00-0f-ac:13
      nl80211: Supported cipher 00-0f-ac:11
      nl80211: Supported cipher 00-0f-ac:12
      nl80211: Using driver-based off-channel TX
      nl80211: Use separate P2P group interface (driver advertised support)
      nl80211: interface wlan0_ap2 in phy phy0
      nl80211: Set mode ifindex 4 iftype 3 (AP)
      nl80211: Setup AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
      nl80211: Subscribe to mgmt frames with AP handle 0x57d950
      nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0x57d950 match=
      nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0x57d950 match=
      nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0x57d950 match=
      nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0x57d950 match=
      nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0x57d950 match=
      nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x57d950 match=
      nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0x57d950 match=
      nl80211: Add own interface ifindex 4
      nl80211: if_indices[16]: 4
      phy: phy0
      BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
      wlan0_ap2: interface state UNINITIALIZED->COUNTRY_UPDATE
      Previous country code 98, new country code US
      Continue interface setup after channel list update
      ctrl_iface not configured!
      random: Got 20/20 bytes from /dev/random
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff d0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6dd0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff f0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6df0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 00 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-37 fc=0x40 seq_ctrl=0x6e00 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 50 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-41 fc=0x40 seq_ctrl=0x6e50 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      Channel list update timeout - try to continue anyway
      nl80211: Regulatory information - country=98
      nl80211: 2402-2482 @ 40 MHz 20 mBm
      nl80211: 5170-5250 @ 80 MHz 23 mBm
      nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS)
      nl80211: 5735-5835 @ 80 MHz 30 mBm
      nl80211: Added 802.11b mode based on 802.11g information
      Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=12 freq=2467 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=13 freq=2472 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=12 freq=2467 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=13 freq=2472 MHz max_tx_power=20 dBm
      Completing interface initialization
      Mode: IEEE 802.11g Channel: 10 Frequency: 2457 MHz
      DFS 0 channels required radar detection
      nl80211: Set freq 2457 (ht_enabled=0, vht_enabled=0, bandwidth=20 MHz, cf1=2457 MHz, cf2=0 MHz)
      * freq=2457
      * vht_enabled=0
      * ht_enabled=0
      RATE[0] rate=10 flags=0x1
      RATE[1] rate=20 flags=0x1
      RATE[2] rate=55 flags=0x1
      RATE[3] rate=110 flags=0x1
      RATE[4] rate=60 flags=0x0
      RATE[5] rate=90 flags=0x0
      RATE[6] rate=120 flags=0x0
      RATE[7] rate=180 flags=0x0
      RATE[8] rate=240 flags=0x0
      RATE[9] rate=360 flags=0x0
      RATE[10] rate=480 flags=0x0
      RATE[11] rate=540 flags=0x0
      hostapd_setup_bss(hapd=0x57cf48 (wlan0_ap2), first=1)
      wlan0_ap2: Flushing old station entries
      nl80211: flush -> DEL_STATION wlan0_ap2 (all)
      wlan0_ap2: Deauthenticate all stations
      nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
      nl80211: send_mlme -> send_frame
      nl80211: send_frame - Use bss->freq=2457
      nl80211: send_frame -> send_frame_cmd
      nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
      CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 02 00
      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
      Using interface wlan0_ap2 with hwaddr 12:34:56:78:ab:ce and ssid "myhotspot"
      Deriving WPA PSK based on passphrase
      SSID - hexdump_ascii(len=9):
      6d 79 68 6f 74 73 70 6f 74 myhotspot
      PSK (ASCII passphrase) - hexdump_ascii(len=10): [REMOVED]
      PSK (from passphrase) - hexdump(len=32): [REMOVED]
      Get randomness: len=32 entropy=108
      GMK - hexdump(len=32): [REMOVED]
      Get randomness: len=32 entropy=76
      Key Counter - hexdump(len=32): [REMOVED]
      WPA: Delay group state machine start until Beacon frames have been configured
      nl80211: Set beacon (beacon_set=0)
      nl80211: Beacon head - hexdump(len=60): 80 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 00 00 00 00 00 00 00 00 64 00 11 04 00 09 6d 79 68 6f 74 73 70 6f 74 01 08 82 84 8b 96 0c 12 18 24 03 01 0a
      nl80211: Beacon tail - hexdump(len=41): 2a 01 04 32 04 30 48 60 6c 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 02 00 00 7f 08 00 00 00 00 00 00 00 40
      nl80211: ifindex=4
      nl80211: beacon_int=100
      nl80211: dtim_period=2
      nl80211: ssid - hexdump_ascii(len=9):
      6d 79 68 6f 74 73 70 6f 74 myhotspot
      * beacon_int=100
      nl80211: hidden SSID not in use
      nl80211: privacy=1
      nl80211: auth_algs=0x1
      nl80211: wpa_version=0x2
      nl80211: key_mgmt_suites=0x2
      nl80211: pairwise_ciphers=0x18
      nl80211: group_cipher=0x10
      nl80211: SMPS mode - off
      nl80211: beacon_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
      nl80211: proberesp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
      nl80211: assocresp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
      nl80211: Beacon set failed: -16 (Device or resource busy)
      Failed to set beacon parameters
      wlan0_ap2: Flushing old station entries
      nl80211: flush -> DEL_STATION wlan0_ap2 (all)
      wlan0_ap2: Deauthenticate all stations
      nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
      nl80211: send_mlme -> send_frame
      nl80211: send_frame - Use bss->freq=2457
      nl80211: send_frame -> send_frame_cmd
      nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
      CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
      hostapd_free_hapd_data(wlan0_ap2)
      Interface initialization failed
      wlan0_ap2: interface state COUNTRY_UPDATE->DISABLED
      wlan0_ap2: AP-DISABLED
      hostapd_interface_deinit_free(0x57c308)
      hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1
      hostapd_interface_deinit(0x57c308)
      wlan0_ap2: interface state DISABLED->DISABLED
      hostapd_bss_deinit: deinit bss wlan0_ap2
      wlan0_ap2: Deauthenticate all stations
      nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
      nl80211: send_mlme -> send_frame
      nl80211: send_frame - Use bss->freq=2457
      nl80211: send_frame -> send_frame_cmd
      nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
      CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
      wlan0_ap2: AP-DISABLED
      hostapd_cleanup(hapd=0x57cf48 (wlan0_ap2))
      hostapd_free_hapd_data: Interface wlan0_ap2 wasn't started
      hostapd_interface_deinit_free: driver=0x977b0 drv_priv=0x57d818 -> hapd_deinit
      nl80211: deinit ifname=wlan0_ap2 disabled_11b_rates=0
      nl80211: Remove monitor interface: refcount=0
      nl80211: Remove beacon (ifindex=4)
      netlink: Operstate: ifindex=4 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP)
      nl80211: Set mode ifindex 4 iftype 2 (STATION)
      nl80211: Teardown AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
      nl80211: Unsubscribe mgmt frames handle 0x88df51d9 (AP teardown)
      hostapd_interface_free(0x57c308)
      hostapd_interface_free: free hapd 0x57cf48
      hostapd_cleanup_iface(0x57c308)
      hostapd_cleanup_iface_partial(0x57c308)
      hostapd_cleanup_iface: free iface=0x57c308


      Could it be that hostapd got corrupted during power cycle? What could be the cause of this?



      Does the problem start here?



      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)









      share|improve this question














      I had a working hostapd file and a functioning wifi hotspot (device is busybox, iMX6 board). While the hotspot was up and running, I was doing manual routing connected to the device via ssh (I'm able to connect this device via another device's access point, I first connect to the access point using my PC and then ssh into the aforementioned device). However, during my last command, ssh got stuck, hence I decided to power cycle.



      After the power cycle, the previous commands (which used to work everytime, even after power cycles) does not work anymore. Here is how I normally would setup the hotspot.



      First I would create a virtual interface from wlan0, which is active on startup.



      iw dev wlan0 interface add wlan0_ap2 type managed addr 12:34:56:78:ab:ce


      wlan0 interface is also what allows me to ssh into this device. wlan0 is connected to wlan0-ap of another board. My PC is also connected to wlan0-ap network. After ssh'ing into the device, I would start hostapd config like so:



      hostapd -dd /etc/hostapd_build_ap.conf


      After that, hotstop would be detectable and connectable by external devices. I do not normally setup a dhcp server, static IP is okay for me.



      Here is the hostapd_build_ap.conf file:



      interface=wlan0_ap2
      #bridge=br0
      ssid=myhotspot
      driver=nl80211
      country_code=US
      hw_mode=g
      channel=10
      max_num_sta=5
      wpa=2
      auth_algs=1
      wpa_passphrase=ABABABABAB
      wpa_key_mgmt=WPA-PSK
      wpa_pairwise=TKIP
      rsn_pairwise=CCMP


      After certain routings are done via "route add ..."



      I would normally be able to use both devices as access points connected to each other. Yet, after my last routing, like said, ssh got inresponsive and I had to power cycle. (There is no other way of accessing the device at the moment)



      Now, when I try to start hostapd, I get this:



      random: Trying to read entropy from /dev/random
      Configuration file: /etc/hostapd_build_ap.conf
      rfkill: Cannot open RFKILL control device
      nl80211: RFKILL status not available
      nl80211: TDLS supported
      nl80211: TDLS external setup
      nl80211: Supported cipher 00-0f-ac:1
      nl80211: Supported cipher 00-0f-ac:5
      nl80211: Supported cipher 00-0f-ac:2
      nl80211: Supported cipher 00-0f-ac:4
      nl80211: Supported cipher 00-0f-ac:10
      nl80211: Supported cipher 00-0f-ac:8
      nl80211: Supported cipher 00-0f-ac:9
      nl80211: Supported cipher 00-0f-ac:6
      nl80211: Supported cipher 00-0f-ac:13
      nl80211: Supported cipher 00-0f-ac:11
      nl80211: Supported cipher 00-0f-ac:12
      nl80211: Using driver-based off-channel TX
      nl80211: Use separate P2P group interface (driver advertised support)
      nl80211: interface wlan0_ap2 in phy phy0
      nl80211: Set mode ifindex 4 iftype 3 (AP)
      nl80211: Setup AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
      nl80211: Subscribe to mgmt frames with AP handle 0x57d950
      nl80211: Register frame type=0xb0 (WLAN_FC_STYPE_AUTH) nl_handle=0x57d950 match=
      nl80211: Register frame type=0x0 (WLAN_FC_STYPE_ASSOC_REQ) nl_handle=0x57d950 match=
      nl80211: Register frame type=0x20 (WLAN_FC_STYPE_REASSOC_REQ) nl_handle=0x57d950 match=
      nl80211: Register frame type=0xa0 (WLAN_FC_STYPE_DISASSOC) nl_handle=0x57d950 match=
      nl80211: Register frame type=0xc0 (WLAN_FC_STYPE_DEAUTH) nl_handle=0x57d950 match=
      nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x57d950 match=
      nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0x57d950 match=
      nl80211: Add own interface ifindex 4
      nl80211: if_indices[16]: 4
      phy: phy0
      BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
      wlan0_ap2: interface state UNINITIALIZED->COUNTRY_UPDATE
      Previous country code 98, new country code US
      Continue interface setup after channel list update
      ctrl_iface not configured!
      random: Got 20/20 bytes from /dev/random
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff d0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6dd0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff f0 6d 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-43 fc=0x40 seq_ctrl=0x6df0 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 00 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-37 fc=0x40 seq_ctrl=0x6e00 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      nl80211: Event message available
      nl80211: BSS Event 59 (NL80211_CMD_FRAME) received for wlan0_ap2
      nl80211: MLME event 59 (NL80211_CMD_FRAME) on wlan0_ap2(12:34:56:78:ab:ce) A1=ff:ff:ff:ff:ff:ff A2=bc:a9:20:47:0d:ee
      nl80211: MLME event frame - hexdump(len=130): 40 00 00 00 ff ff ff ff ff ff bc a9 20 47 0d ee ff ff ff ff ff ff 50 6e 00 04 41 52 4f 58 01 04 02 04 0b 16 32 08 0c 12 18 24 30 48 60 6c 03 01 0b 2d 1a 21 40 17 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7f 08 04 00 08 84 00 00 00 40 6b 07 0f ff ff ff ff ff ff dd 0b 00 17 f2 0a 00 01 04 00 00 00 00 dd 08 00 50 f2 08 00 0e 00 00 dd 09 00 10 18 02 01 00 10 00 00
      nl80211: Frame event
      nl80211: RX frame sa=bc:a9:20:47:0d:ee freq=2462 ssi_signal=-41 fc=0x40 seq_ctrl=0x6e50 stype=4 (WLAN_FC_STYPE_PROBE_REQ) len=130
      Channel list update timeout - try to continue anyway
      nl80211: Regulatory information - country=98
      nl80211: 2402-2482 @ 40 MHz 20 mBm
      nl80211: 5170-5250 @ 80 MHz 23 mBm
      nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS)
      nl80211: 5735-5835 @ 80 MHz 30 mBm
      nl80211: Added 802.11b mode based on 802.11g information
      Allowed channel: mode=1 chan=1 freq=2412 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=2 freq=2417 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=3 freq=2422 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=4 freq=2427 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=5 freq=2432 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=6 freq=2437 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=7 freq=2442 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=8 freq=2447 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=9 freq=2452 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=10 freq=2457 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=11 freq=2462 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=12 freq=2467 MHz max_tx_power=20 dBm
      Allowed channel: mode=1 chan=13 freq=2472 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=1 freq=2412 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=2 freq=2417 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=3 freq=2422 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=4 freq=2427 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=5 freq=2432 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=6 freq=2437 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=7 freq=2442 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=8 freq=2447 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=9 freq=2452 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=10 freq=2457 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=11 freq=2462 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=12 freq=2467 MHz max_tx_power=20 dBm
      Allowed channel: mode=0 chan=13 freq=2472 MHz max_tx_power=20 dBm
      Completing interface initialization
      Mode: IEEE 802.11g Channel: 10 Frequency: 2457 MHz
      DFS 0 channels required radar detection
      nl80211: Set freq 2457 (ht_enabled=0, vht_enabled=0, bandwidth=20 MHz, cf1=2457 MHz, cf2=0 MHz)
      * freq=2457
      * vht_enabled=0
      * ht_enabled=0
      RATE[0] rate=10 flags=0x1
      RATE[1] rate=20 flags=0x1
      RATE[2] rate=55 flags=0x1
      RATE[3] rate=110 flags=0x1
      RATE[4] rate=60 flags=0x0
      RATE[5] rate=90 flags=0x0
      RATE[6] rate=120 flags=0x0
      RATE[7] rate=180 flags=0x0
      RATE[8] rate=240 flags=0x0
      RATE[9] rate=360 flags=0x0
      RATE[10] rate=480 flags=0x0
      RATE[11] rate=540 flags=0x0
      hostapd_setup_bss(hapd=0x57cf48 (wlan0_ap2), first=1)
      wlan0_ap2: Flushing old station entries
      nl80211: flush -> DEL_STATION wlan0_ap2 (all)
      wlan0_ap2: Deauthenticate all stations
      nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
      nl80211: send_mlme -> send_frame
      nl80211: send_frame - Use bss->freq=2457
      nl80211: send_frame -> send_frame_cmd
      nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
      CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 02 00
      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
      Using interface wlan0_ap2 with hwaddr 12:34:56:78:ab:ce and ssid "myhotspot"
      Deriving WPA PSK based on passphrase
      SSID - hexdump_ascii(len=9):
      6d 79 68 6f 74 73 70 6f 74 myhotspot
      PSK (ASCII passphrase) - hexdump_ascii(len=10): [REMOVED]
      PSK (from passphrase) - hexdump(len=32): [REMOVED]
      Get randomness: len=32 entropy=108
      GMK - hexdump(len=32): [REMOVED]
      Get randomness: len=32 entropy=76
      Key Counter - hexdump(len=32): [REMOVED]
      WPA: Delay group state machine start until Beacon frames have been configured
      nl80211: Set beacon (beacon_set=0)
      nl80211: Beacon head - hexdump(len=60): 80 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 00 00 00 00 00 00 00 00 64 00 11 04 00 09 6d 79 68 6f 74 73 70 6f 74 01 08 82 84 8b 96 0c 12 18 24 03 01 0a
      nl80211: Beacon tail - hexdump(len=41): 2a 01 04 32 04 30 48 60 6c 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 02 00 00 7f 08 00 00 00 00 00 00 00 40
      nl80211: ifindex=4
      nl80211: beacon_int=100
      nl80211: dtim_period=2
      nl80211: ssid - hexdump_ascii(len=9):
      6d 79 68 6f 74 73 70 6f 74 myhotspot
      * beacon_int=100
      nl80211: hidden SSID not in use
      nl80211: privacy=1
      nl80211: auth_algs=0x1
      nl80211: wpa_version=0x2
      nl80211: key_mgmt_suites=0x2
      nl80211: pairwise_ciphers=0x18
      nl80211: group_cipher=0x10
      nl80211: SMPS mode - off
      nl80211: beacon_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
      nl80211: proberesp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
      nl80211: assocresp_ies - hexdump(len=10): 7f 08 00 00 00 00 00 00 00 40
      nl80211: Beacon set failed: -16 (Device or resource busy)
      Failed to set beacon parameters
      wlan0_ap2: Flushing old station entries
      nl80211: flush -> DEL_STATION wlan0_ap2 (all)
      wlan0_ap2: Deauthenticate all stations
      nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
      nl80211: send_mlme -> send_frame
      nl80211: send_frame - Use bss->freq=2457
      nl80211: send_frame -> send_frame_cmd
      nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
      CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
      wpa_driver_nl80211_set_key: ifindex=4 (wlan0_ap2) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
      hostapd_free_hapd_data(wlan0_ap2)
      Interface initialization failed
      wlan0_ap2: interface state COUNTRY_UPDATE->DISABLED
      wlan0_ap2: AP-DISABLED
      hostapd_interface_deinit_free(0x57c308)
      hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1
      hostapd_interface_deinit(0x57c308)
      wlan0_ap2: interface state DISABLED->DISABLED
      hostapd_bss_deinit: deinit bss wlan0_ap2
      wlan0_ap2: Deauthenticate all stations
      nl80211: send_mlme - da= ff:ff:ff:ff:ff:ff noack=0 freq=0 no_cck=0 offchanok=0 wait_time=0 fc=0xc0 (WLAN_FC_STYPE_DEAUTH) nlmode=3
      nl80211: send_mlme -> send_frame
      nl80211: send_frame - Use bss->freq=2457
      nl80211: send_frame -> send_frame_cmd
      nl80211: CMD_FRAME freq=2457 wait=0 no_cck=0 no_ack=0 offchanok=0
      CMD_FRAME - hexdump(len=26): c0 00 00 00 ff ff ff ff ff ff 12 34 56 78 ab ce 12 34 56 78 ab ce 00 00 03 00
      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)
      wlan0_ap2: AP-DISABLED
      hostapd_cleanup(hapd=0x57cf48 (wlan0_ap2))
      hostapd_free_hapd_data: Interface wlan0_ap2 wasn't started
      hostapd_interface_deinit_free: driver=0x977b0 drv_priv=0x57d818 -> hapd_deinit
      nl80211: deinit ifname=wlan0_ap2 disabled_11b_rates=0
      nl80211: Remove monitor interface: refcount=0
      nl80211: Remove beacon (ifindex=4)
      netlink: Operstate: ifindex=4 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP)
      nl80211: Set mode ifindex 4 iftype 2 (STATION)
      nl80211: Teardown AP(wlan0_ap2) - device_ap_sme=0 use_monitor=0
      nl80211: Unsubscribe mgmt frames handle 0x88df51d9 (AP teardown)
      hostapd_interface_free(0x57c308)
      hostapd_interface_free: free hapd 0x57cf48
      hostapd_cleanup_iface(0x57c308)
      hostapd_cleanup_iface_partial(0x57c308)
      hostapd_cleanup_iface: free iface=0x57c308


      Could it be that hostapd got corrupted during power cycle? What could be the cause of this?



      Does the problem start here?



      nl80211: Frame command failed: ret=-16 (Device or resource busy) (freq=2457 wait=0)






      linux-networking iproute2 hostapd iproute






      share|improve this question













      share|improve this question











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      share|improve this question










      asked May 8 at 10:49









      MaximusMaximus

      1062




      1062




















          1 Answer
          1






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          oldest

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          0














          Okay I got the solution,



          Since this device has



          valid interface combinations:
          * # managed <= 2048, # AP <= 8, # P2P-client, P2P-GO <= 1,
          total <= 2048, #channels <= 1, STA/AP BI must match


          Specifically,



          #channels <= 1


          AP and wlan0 must share the same channel.



          I checked the channel of wlan0 using



          iw wlan0 info


          And turns out it switched to channel 11. So, configuring the hostapd file accordingly solved the problem.






          share|improve this answer























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            1 Answer
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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            Okay I got the solution,



            Since this device has



            valid interface combinations:
            * # managed <= 2048, # AP <= 8, # P2P-client, P2P-GO <= 1,
            total <= 2048, #channels <= 1, STA/AP BI must match


            Specifically,



            #channels <= 1


            AP and wlan0 must share the same channel.



            I checked the channel of wlan0 using



            iw wlan0 info


            And turns out it switched to channel 11. So, configuring the hostapd file accordingly solved the problem.






            share|improve this answer



























              0














              Okay I got the solution,



              Since this device has



              valid interface combinations:
              * # managed <= 2048, # AP <= 8, # P2P-client, P2P-GO <= 1,
              total <= 2048, #channels <= 1, STA/AP BI must match


              Specifically,



              #channels <= 1


              AP and wlan0 must share the same channel.



              I checked the channel of wlan0 using



              iw wlan0 info


              And turns out it switched to channel 11. So, configuring the hostapd file accordingly solved the problem.






              share|improve this answer

























                0












                0








                0







                Okay I got the solution,



                Since this device has



                valid interface combinations:
                * # managed <= 2048, # AP <= 8, # P2P-client, P2P-GO <= 1,
                total <= 2048, #channels <= 1, STA/AP BI must match


                Specifically,



                #channels <= 1


                AP and wlan0 must share the same channel.



                I checked the channel of wlan0 using



                iw wlan0 info


                And turns out it switched to channel 11. So, configuring the hostapd file accordingly solved the problem.






                share|improve this answer













                Okay I got the solution,



                Since this device has



                valid interface combinations:
                * # managed <= 2048, # AP <= 8, # P2P-client, P2P-GO <= 1,
                total <= 2048, #channels <= 1, STA/AP BI must match


                Specifically,



                #channels <= 1


                AP and wlan0 must share the same channel.



                I checked the channel of wlan0 using



                iw wlan0 info


                And turns out it switched to channel 11. So, configuring the hostapd file accordingly solved the problem.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered May 8 at 11:04









                MaximusMaximus

                1062




                1062



























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