Fwd: Fwd: Fwd: nl80211: Beacon set failed: -16 (Device or resource busy)

Sourav sourav.chakraborty at netcommwireless.com
Tue Nov 18 00:49:53 EST 2014


it has multiple SSIDs enabled.................I have noticed when the 
given error happens,
1543 root         0 SW<  [cfg80211]

there is the above process in Sleeping state, and I can't kill it even 
using kill -9 1543

Following is my hostapd.conf --

##### hostapd configuration file, generated by rdb-manager 
##################
# This is derrived from the hostapd.conf file under gnu_apps/hostapd, which
# contains extensive documentation which was stripped out for this file.

interface=wlan0


driver=nl80211

logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2

ctrl_interface=/var/run/hostapd
ctrl_interface_group=0

ssid2="NetComm 2500"
country_code=AU
hw_mode=g
channel=6
ap_max_inactivity=300
beacon_int=100
dtim_period=2
max_num_sta=31
rts_threshold=2347
fragm_threshold=2346
auth_algs=1
ignore_broadcast_ssid=0


disassoc_low_ack=0
max_listen_interval=500

ap_isolate=0

ieee80211n=1
# ht_capab=[HT40+][HT40-][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC12]
# adding HT40+ or HT40- limits the number of available channels to 
either 1-9
ht_capab=[HT40+][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC12]
# Feature requires a patch (gnu_apps/hostapd/patches)
noscan=1

eapol_key_index_workaround=0

eap_server=0

own_ip_addr=127.0.0.1

wpa=2
wpa_passphrase=pusuqalemi
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP
wpa_group_rekey=600
rsn_preauth=0

bss=wlan1
bridge=br0
bssid=00:60:64:E7:E9:62
ssid=GUEST1
auth_algs=1
driver=nl80211
ignore_broadcast_ssid=0
wep_default_key=0
auth_server_addr=0.0.0.0
auth_server_port=1812
auth_server_shared_secret=NetComm
rsn_preauth=0
wpa_passphrase=a1b2c3d4e5
wpa_pairwise=CCMP
wpa_group_rekey=600
wpa=2
wpa_key_mgmt=WPA-PSK
eapol_key_index_workaround=0

eap_server=0
ap_isolate=0
own_ip_addr=127.0.0.1

I am getting the following error on trying to run hostapd --
Can you suggest how to fix this


root:/tmp/cdcs/etc# hostapd -B hostapd.conf -dddd
random: Trying to read entropy from /dev/urandom
Configuration file: hostapd.conf
ctrl_interface_group=0
rfkill: initial event: idx=0 type=1 op=0 soft=0 hard=0
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: Using driver-based off-channel TX
nl80211: interface wlan0 in phy phy0
nl80211: Set mode ifindex 9 iftype 3 (AP)
:
:
nl80211: group_cipher=0x10
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
Interface initialization failed
wlan0: interface state COUNTRY_UPDATE->DISABLED
wlan0: AP-DISABLED
wlan0: Unable to setup interface.
hostapd_interface_deinit_free(0x932c8)
:


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