sudden shutdown

Hi. My MacBook Pro 15-inch retina, released in Mid 2014, will sudden shutdown at anytime when I am using it.

I have tried to re-install OSX Sierra, but the problem is unsolved. I have gone to Genuis Bar to check the hardware, but the result shows that everything looks fine (hardware).

I found that although there is no Kernel Panic log locating in "/Library/logs", there are some crash reports in the CrashReporter in the path "/Library/logs".

The report shows the following,

Dec 20 11:40:12.187081 +0800 000001.276315 Brcm4360<D>[291] [0x2046728334899c51][1][0] wlc_verify_d3_exit: AER_UC_NON_FATAL: STS:00008000, SERV:FFF9DFCF

Dec 20 11:40:12.187097 +0800 000001.276330 Brcm4360<D>[294] [0x2046728334899c51][1][0] wl0: fatal error, reinitializing, total count of reinit's[1], @'wlc_verify_d3_exit':57164

Dec 20 11:40:12.187137 +0800 000001.276371 Brcm4360<D>[296] [0x2046728334899c51][1][0] wl_fatal_error: fatal error within 392 ms, limit:4000 ms. currentRetryCnt:1, max:3

Dec 20 11:40:12.187139 +0800 000001.276373 Brcm4360<D>[297] [0x2046728334899c51][1][0] AirPort_Brcm43xx::setPowerCycleInProgress: state [0] -> [1], name['wl_fatal_error'] id[31094]

Dec 20 11:40:12.195778 +0800 000001.285011 Brcm4360<D>[1796] [0x2046728334899c51][1][0] Fatal Error - Initiate powercycle

I think there are some problems with the WiFi driver, which may lead to the crash.