Bug 85811

Summary: System Hangs /home/apw/COD/linux/kernel/watchdog.c:265 watchdog_overflow_callback+0x98/0xc0()
Product: Drivers Reporter: Tom King (tomking)
Component: network-wirelessAssignee: drivers_network-wireless (drivers_network-wireless)
Status: NEW ---    
Severity: normal CC: alan, tomking
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: Linux version 3.16.0-031600-generic (apw@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201408031935 SMP Sun Aug 3 23:36:11 UTC 2014 Subsystem:
Regression: No Bisected commit-id:
Attachments: Kernel Trace at detection of Lockup

Description Tom King 2014-10-08 05:05:10 UTC 
Created attachment 152851 [details]
Kernel Trace at detection of Lockup

I have realtek RTL8723BE wireless controller that does not work under 3.13.
I upgraded to 3.16 as I believed driver changes resolved it.
The wifi does work but the system hangs every 20-40 minutes.

Oct  8 13:07:31 metatom kernel: [ 1143.826690] ------------[ cut here ]------------
Oct  8 13:07:31 metatom kernel: [ 1143.826698] WARNING: CPU: 4 PID: 45 at /home/apw/COD/linux/kernel/watchdog.c:265 watchdog_overflow
_callback+0x98/0xc0()
Oct  8 13:07:31 metatom kernel: [ 1143.826699] Watchdog detected hard LOCKUP on cpu 4
Oct  8 13:07:31 metatom kernel: [ 1143.826700] Modules linked in: rtl8723be btcoexist rtl8723_common rtl_pci rtlwifi mac80211 cfg8021
1 ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal intel_power
clamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_hda_controller nouveau snd_hda_codec
 snd_hwdep uvcvideo aesni_intel snd_pcm i915 aes_x86_64 videobuf2_vmalloc lrw snd_seq_midi videobuf2_memops gf128mul videobuf2_core g
lue_helper mxm_wmi v4l2_common snd_seq_midi_event ablk_helper videodev ttm snd_rawmidi cryptd drm_kms_helper media snd_seq btusb drm 
rtsx_pci_ms joydev bluetooth serio_raw snd_seq_device snd_timer snd 6lowpan_iphc lpc_ich i2c_algo_bit shpchp memstick parport_pc mei_
me ppdev wmi mei soundcore mac_hid tpm_infineon video lp parport rtsx_pci_sdmmc psmouse ahci r8169 firewire_ohci libahci firewire_cor
e mii rtsx_pci crc_itu_t [last unloaded: btcoexist]
Oct  8 13:07:31 metatom kernel: [ 1143.826746] CPU: 4 PID: 45 Comm: kworker/4:0 Not tainted 3.16.0-031600-generic #201408031935
Oct  8 13:07:31 metatom kernel: [ 1143.826747] Hardware name: Notebook                         P15SM-A/SM1-A                    /P15S
M-A/SM1-A                    , BIOS 4.6.5 09/12/2014
Oct  8 13:07:31 metatom kernel: [ 1143.826751] Workqueue: pm pm_runtime_work
Oct  8 13:07:31 metatom kernel: [ 1143.826752]  0000000000000109 ffff88042bb07ba8 ffffffff81786525 0000000000000007
Oct  8 13:07:31 metatom kernel: [ 1143.826754]  ffff88042bb07bf8 ffff88042bb07be8 ffffffff8107207c 0000000000000000
Oct  8 13:07:31 metatom kernel: [ 1143.826756]  ffff8804154d8000 0000000000000000 ffff88042bb07d18 0000000000000000