To reproduce:
1. Open attached project
2. Build & run to an android x86 device or virtual android device with x86 processor
3. Notice that the screen is grey, unity appears stuck. If you look into logcat you will see that it crashed:

07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000000
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: Build fingerprint: 'Android/sdk_google_phone_x86/generic_x86:7.1.1/NYC/3756122:userdebug/test-keys'
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: Revision: '0'
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: pid: 4563, tid: 4578, name: UnityMain >>> com.Company.Crasher <<<
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: eax 8a75c150 ebx 8e317ff4 ecx 00000000 edx 8e33b288
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: esi 8a75c150 edi 8a75a810
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: xcs 00000073 xds 0000007b xes 0000007b xfs 0000003b xss 0000007b
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: eip 8c2d8769 ebp 00000001 esp 8be3cc80 flags 00010292
07-19 12:26:54.280 4563-4578/com.Company.Crasher E/CRASH: backtrace:
07-19 12:26:54.349 4563-4578/com.Company.Crasher E/CRASH: #00 pc 00499769 /data/app/com.Company.Crasher-1/lib/x86/libunity.so (physx::PxLightCpuTask::addReference()+23)
07-19 12:26:54.349 4563-4578/com.Company.Crasher E/MessageQueue: IdleHandler threw exception
java.lang.Error: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000000
Build fingerprint: 'Android/sdk_google_phone_x86/generic_x86:7.1.1/NYC/3756122:userdebug/test-keys'
Revision: '0'
pid: 4563, tid: 4578, name: UnityMain >>> com.Company.Crasher <<<

at libunity.physx::PxLightCpuTask::addReference()(PxLightCpuTask:23)