xubuntu-14.04 error message during startup of the system

Seems to be the problem of wireless network card, temporarily do not affect the use of wireless network card after the boot can also be used normally.

The hardware information is as follows:

07:00.0 Ethernet controller:qualcomm Atheros QCA8171 Gigabit Ethernet (rev 10)

08:00.0 Network controller:broadcom Corporation BCM43142 802.11b/g/n (rev 01)

System Kernel Version:

$ uname-a

Linux myhost 3.13.0-44-generic #73-ubuntu SMP Tue Dec 00:22:43 UTC x86_64 x86_64 x86_64 gnu/linux

Some of the logs in/var/log/kern.log are as follows:

Dec 21:43:32 myhost kernel: [16670.059143] cfg80211: (2474000 KHz-2494000 khz @ 20000 khz), (MBi, MBm)

Dec 21:43:32 myhost kernel: [16670.059146] cfg80211: (5170000 KHz-5250000 khz @ 40000 khz), (MBi, MBm)

Dec 21:43:32 myhost kernel: [16670.059148] cfg80211: (5735000 KHz-5835000 khz @ 40000 khz), (MBi, MBm)

Dec 21:43:35 myhost kernel: [16672.565454] ———— [Cut here] ————

Dec 21:43:35 myhost kernel: [16672.565476] Warning:cpu:4 pid:454 at/build/buildd/linux-3.13.0/net/wireless/sme.c:79 7 cfg80211_roamed+0x89/0x90 cfg80211

Dec 21:43:35 myhost kernel: [16672.565488] Modules linked in:usb_storage BNEP rfcomm nls_iso8859_1 SND_HDA_CODEC_HDMI Snd_hda_codec_realtek uvcvideo videobuf2_vmalloc btusb videobuf2_memops bluetooth videobuf2_core videodev x86_pkg_temp _thermal intel_powerclamp coretemp kvm_intel KVM crct10dif_pclmul crc32_pclmul Ghash_clmulni_intel lib80211_crypt_tkip Aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd joydev serio_raw snd_hda_intel snd_hda_codec SND_HWDEP Lpc_ich snd_pcm WL (POX) snd_page_alloc lib80211 nouveau snd_seq_midi i915 snd_seq_midi_event snd_rawmidi cfg80211 snd_seq Snd_seq_device mxm_wmi snd_timer Ttm mei_me drm_kms_helper mei snd DRM soundcore i2c_algo_bit PARPORT_PC Ppdev LP Parport Ideapad_laptop Sparse_keymap Video WMI Mac_hid hid_generic Usbhid hid AHCI psmouse alx libahci Mdio

Dec 21:43:35 myhost kernel: [16672.565585] cpu:4 pid:454 comm:wl_event_handle tainted:p OX 3.13.0-40-generic #69-ub Untu

Dec 21:43:35 myhost kernel: [16672.565596] Hardware Name:lenovo 20435/biqy0, BIOS 74cn52ww (V3.57) 05/05/2014

Dec 21:43:35 myhost kernel: [16672.565599] 0000000000000009 ffff880087eb7d88 ffffffff8171f226 0000000000000000

Dec 21:43:35 myhost kernel: [16672.565610] ffff880087eb7dc0 ffffffff810677cd ffff880168fa5000 ffff8801389890c0

Dec 21:43:35 myhost kernel: [16672.565623] 000000000000009b ffff880118240e80 0000000000000001 ffff880087eb7dd0

Dec 21:43:35 myhost kernel: [16672.565630] Call Trace:

Dec 21:43:35 myhost kernel: [16672.565641] [] dump_stack+0x45/0x56

Dec 21:43:35 myhost kernel: [16672.565649] [] warn_slowpath_common+0x7d/0xa0

Dec 21:43:35 myhost kernel: [16672.565655] [] warn_slowpath_null+0x1a/0x20

Dec 21:43:35 myhost kernel: [16672.565680] [] cfg80211_roamed+0x89/0x90 [cfg80211]

Dec 21:43:35 myhost kernel: [16672.565753] [] wl_bss_connect_done.isra.21+0x98/0x1a0 [WL]

Dec 21:43:35 myhost kernel: [16672.565819] [] wl_notify_connect_status+0x1fc/0x410 [WL]

Dec 21:43:35 myhost kernel: [16672.565882] [] wl_event_handler+0x55/0x220 [WL]

Dec 21:43:35 myhost kernel: [16672.565944] []? wl_get_assoc_ies+0x240/0x240 [WL]

Dec 21:43:35 myhost kernel: [16672.565951] [] kthread+0xd2/0xf0

Dec 21:43:35 myhost kernel: [16672.565957] []? Kthread_create_on_node+0x1c0/0x1c0

Dec 21:43:35 myhost kernel: [16672.565963] [] ret_from_fork+0x7c/0xb0

Dec 21:43:35 myhost kernel: [16672.565970] []? Kthread_create_on_node+0x1c0/0x1c0

Dec 21:43:35 myhost kernel: [16672.565974]-[end Trace 0a49816fbc002f01]-

Dec 10:35:04 myhost kernel: [63012.837849] cfg80211:calling CRDA to update World regulatory domain

Dec 10:35:04 myhost kernel: [63012.917091] Cfg80211:world regulatory domain Updated:

Dec 10:35:04 myhost kernel: [63012.917094] cfg80211: (start_freq-end_freq @ Bandwidth), (Max_antenna_gain, MAX_EIRP)

Dec 10:35:04 myhost kernel: [63012.917095] cfg80211: (2402000 KHz-2472000 khz @ 40000 khz), (MBi, MBm)

Dec 10:35:04 myhost kernel: [63012.917097] cfg80211: (2457000 KHz-2482000 khz @ 40000 khz), (MBi, MBm)

Dec 10:35:04 myhost kernel: [63012.917098] cfg80211: (2474000 KHz-2494000 khz @ 20000 khz), (MBi, MBm)

Dec 10:35:04 myhost kernel: [63012.917099] cfg80211: (5170000 KHz-5250000 khz @ 40000 khz), (MBi, MBm)

Dec 10:35:04 myhost kernel: [63012.917100] cfg80211: (5735000 KHz-5835000 khz @ 40000 khz), (MBi, MBm)

Jan 20:35:06 myhost kernel: [0.000000] CPU0 microcode updated early to revision 0x1a, date = 2014-05-23

Jan 20:35:06 myhost kernel: [0.000000] Initializing cgroup Subsys cpuset

Jan 20:35:06 myhost kernel: [0.000000] Initializing cgroup Subsys CPU

Jan 20:35:06 myhost kernel: [0.000000] Initializing cgroup Subsys CPUACCT

Jan 20:35:06 myhost kernel: [0.000000] Linux version 3.13.0-40-generic ([email protected]) (GCC version 4.8.2 (Ubuntu 4.8.2-19UBUNTU1)) #69-ubuntu SMP Thu Nov 17:53:56 UTC (Ubuntu 3.13.0-40.69-generic 3.13.11.10)

First recorded here, waiting to be empty and then resolved.

Error message during startup of the xubuntu-14.04 system