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[Bug 1323089] Re: wpa_supplicant writes to syslog every 2 minutes

 

Also affected on Xubuntu 14.04, laptop is a Thinkpad X220. I lose
network connectivity for a few seconds up to a minute or more when the
messages are logged.

Wireless chipset:
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)

Kernel:
Tried with the standard 14.04 kernel (currently 3.13.0-24-generic) and the mainline packages for stable (3.15.7-031507-generic) and next (3.16.0-031600rc7-generic)

Log snippet:
Jul 31 15:21:43 whistler wpa_supplicant[1331]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jul 31 15:21:47 whistler wpa_supplicant[1331]: nl80211: send_and_recv->nl_recvmsgs failed: -33

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https://bugs.launchpad.net/bugs/1323089

Title:
  wpa_supplicant writes to syslog every 2 minutes

Status in “wpa” package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu 14.04 LTS
  wpasupplicant 2.1-0ubuntu1

  wpa_supplicant is writing to syslog every couple of minutes. Example
  output:

  May 25 19:57:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 19:57:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 19:59:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 19:59:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:00:58 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:01:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:01:24 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:03:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:03:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:05:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:05:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:05:58 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:07:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:07:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:09:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:09:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:10:58 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:13:18 ubuntu wpa_supplicant[1161]: message repeated 2 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
  May 25 20:13:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33

  The message seems harmless as far as the network is concerned, meaning
  there is no problem with the wifi connection. But it's spamming the
  syslog, making it very difficult to find any other thing there, and
  it's generating constant writes to disk, and an unnecessarily large
  syslog file.

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