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Assertion failed: Background task already running #1521

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tommyle opened this issue Nov 28, 2016 · 1 comment
Closed

Assertion failed: Background task already running #1521

tommyle opened this issue Nov 28, 2016 · 1 comment

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@tommyle
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tommyle commented Nov 28, 2016 •
edited by djpongh
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We are having an issue with the background task failing to start with the following stack trace

#0. Crashed: com.twitter.crashlytics.ios.exception
0 APPNAME 0x1005a11f0 CLSProcessRecordAllThreads + 1530768
1 APPNAME 0x1005a11f0 CLSProcessRecordAllThreads + 1530768
2 APPNAME 0x1005a10ac CLSProcessRecordAllThreads + 1530444
3 APPNAME 0x10059186c CLSHandler + 1466892
4 APPNAME 0x10059f2c4 __CLSExceptionRecord_block_invoke + 1522788
5 libdispatch.dylib 0x1834ce1bc _dispatch_client_callout + 16
6 libdispatch.dylib 0x1834db7f0 _dispatch_barrier_sync_f_invoke + 84
7 APPNAME 0x10059ed68 CLSExceptionRecord + 1521416
8 APPNAME 0x10059eb9c CLSExceptionRecordNSException + 1520956
9 APPNAME 0x10059e7bc CLSTerminateHandler() + 1519964
10 libc++abi.dylib 0x18306b66c std::__terminate(void (*)()) + 16
11 libc++abi.dylib 0x18306b234 __cxa_rethrow + 144
12 libobjc.A.dylib 0x18307c71c objc_exception_rethrow + 44
13 CoreFoundation 0x18452032c CFRunLoopRunSpecific + 560
14 GraphicsServices 0x185fd4198 GSEventRunModal + 180
15 UIKit 0x18a60f7c8 + 684
16 UIKit 0x18a60a500 UIApplicationMain + 208
17 APPNAME 0x1000dc110 main (main.m:18)
18 libdispatch.dylib 0x1835015b8 (Missing)

--

Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0x1846471b8 (Missing)
1 libobjc.A.dylib 0x18307c55c (Missing)
2 CoreFoundation 0x18464708c (Missing)
3 Foundation 0x1850ff098 (Missing)
4 APPNAME 0x1004ed920 _AssertFailed (Test_Assertions.m:31)
5 APPNAME 0x1004a95e0 -[MYBackgroundMonitor beginBackgroundTaskNamed:] (MYBackgroundMonitor.m:66)
6 APPNAME 0x1004f180c -[CBLRestReplicator(Backgrounding) appBackgrounding] (CBLRestReplicator+Backgrounding.m:59)
7 APPNAME 0x1004f161c __54-[CBLRestReplicator(Backgrounding) setupBackgrounding]_block_invoke (CBLRestReplicator+Backgrounding.m:32)
8 CoreFoundation 0x1845e0b10 (Missing)
9 CoreFoundation 0x1845e0214 (Missing)
10 CoreFoundation 0x1845dff90 (Missing)
11 CoreFoundation 0x18464fb8c (Missing)
12 CoreFoundation 0x184521e64 (Missing)
13 Foundation 0x185056e0c (Missing)
14 UIKit 0x18a83170c (Missing)
15 UIKit 0x18a90d210 (Missing)
16 UIKit 0x18a8315ac (Missing)
17 UIKit 0x18a83bdbc (Missing)
18 UIKit 0x18a8400d8 (Missing)
19 UIKit 0x18a83ffb4 (Missing)
20 UIKit 0x18a82b554 (Missing)
21 UIKit 0x18a82b1d8 (Missing)
22 UIKit 0x18ab56490 (Missing)
23 FrontBoardServices 0x1861eef98 __80-[FBSSceneImpl updater:didUpdateSettings:withDiff:transitionContext:completion:]_block_invoke.376
24 FrontBoardServices 0x18621c97c FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK
25 FrontBoardServices 0x18621c7e8 -[FBSSerialQueue _performNext]
26 FrontBoardServices 0x18621cb90 -[FBSSerialQueue _performNextFromRunLoopSource]
27 CoreFoundation 0x1845f4b5c (Missing)
28 CoreFoundation 0x1845f44a4 (Missing)
29 CoreFoundation 0x1845f20a4 (Missing)
30 CoreFoundation 0x1845202b8 (Missing)
31 GraphicsServices 0x185fd4198 GSEventRunModal
32 UIKit 0x18a60f7c8 (Missing)
33 UIKit 0x18a60a500 (Missing)
34 APPNAME 0x1000dc110 main (main.m:18)
35 libdispatch.dylib 0x1835015b8 (Missing)

#0. Crashed: com.twitter.crashlytics.ios.exception
0 APPNAME 0x1005a11f0 CLSProcessRecordAllThreads + 1530768
1 APPNAME 0x1005a11f0 CLSProcessRecordAllThreads + 1530768
2 APPNAME 0x1005a10ac CLSProcessRecordAllThreads + 1530444
3 APPNAME 0x10059186c CLSHandler + 1466892
4 APPNAME 0x10059f2c4 __CLSExceptionRecord_block_invoke + 1522788
5 libdispatch.dylib 0x1834ce1bc _dispatch_client_callout + 16
6 libdispatch.dylib 0x1834db7f0 _dispatch_barrier_sync_f_invoke + 84
7 APPNAME 0x10059ed68 CLSExceptionRecord + 1521416
8 APPNAME 0x10059eb9c CLSExceptionRecordNSException + 1520956
9 APPNAME 0x10059e7bc CLSTerminateHandler() + 1519964
10 libc++abi.dylib 0x18306b66c std::__terminate(void (*)()) + 16
11 libc++abi.dylib 0x18306b234 __cxa_rethrow + 144
12 libobjc.A.dylib 0x18307c71c objc_exception_rethrow + 44
13 CoreFoundation 0x18452032c CFRunLoopRunSpecific + 560
14 GraphicsServices 0x185fd4198 GSEventRunModal + 180
15 UIKit 0x18a60f7c8 + 684
16 UIKit 0x18a60a500 UIApplicationMain + 208
17 APPNAME 0x1000dc110 main (main.m:18)
18 libdispatch.dylib 0x1835015b8 (Missing)

#1. com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 CoreFoundation 0x1845f45d0 + 192
3 CoreFoundation 0x1845f21ec + 1132
4 CoreFoundation 0x1845202b8 CFRunLoopRunSpecific + 444
5 Foundation 0x18505d26c + 304
6 Foundation 0x18507ddd0 + 96
7 UIKit 0x18af82af8 + 136
8 Foundation 0x18515ae68 + 1024
9 libsystem_pthread.dylib 0x1836d9850 + 240
10 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
11 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#2. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#3. com.twitter.crashlytics.ios.MachExceptionServer
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 APPNAME 0x10058c6cc CLSMachExceptionServer + 1445996
3 libsystem_pthread.dylib 0x1836d9850 + 240
4 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
5 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#4. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#5. com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 CoreFoundation 0x1845f45d0 + 192
3 CoreFoundation 0x1845f21ec + 1132
4 CoreFoundation 0x1845202b8 CFRunLoopRunSpecific + 444
5 CFNetwork 0x184d259ec + 336
6 Foundation 0x18515ae68 + 1024
7 libsystem_pthread.dylib 0x1836d9850 + 240
8 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
9 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#6. Thread
0 libsystem_kernel.dylib 0x183612e1c __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x1836d89c0 + 640
2 libc++.1.dylib 0x1830013ec std::__1::condition_variable::wait(std::__1::unique_lockstd::__1::mutex&) + 56
3 JavaScriptCore 0x188ecb60c + 112
4 JavaScriptCore 0x188ecb580 + 168
5 JavaScriptCore 0x188ecb460 + 10
6 JavaScriptCore 0x188ecb710 + 92
7 libsystem_pthread.dylib 0x1836d9850 + 240
8 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
9 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#7. WebThread
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 CoreFoundation 0x1845f45d0 + 192
3 CoreFoundation 0x1845f21ec + 1132
4 CoreFoundation 0x1845202b8 CFRunLoopRunSpecific + 444
5 WebCore 0x1891ccd98 + 456
6 libsystem_pthread.dylib 0x1836d9850 + 240
7 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
8 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#8. com.apple.CoreMotion.MotionThread
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 CoreFoundation 0x1845f45d0 + 192
3 CoreFoundation 0x1845f21ec + 1132
4 CoreFoundation 0x1845202b8 CFRunLoopRunSpecific + 444
5 CoreFoundation 0x18456db44 CFRunLoopRun + 112
6 CoreMotion 0x18b489120 CLStartStopAdvertisingBeacon + 203196
7 libsystem_pthread.dylib 0x1836d9850 + 240
8 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
9 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#9. CouchbaseLite
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 CoreFoundation 0x1845f45d0 + 192
3 CoreFoundation 0x1845f21ec + 1132
4 CoreFoundation 0x1845202b8 CFRunLoopRunSpecific + 444
5 Foundation 0x18505d26c + 304
6 APPNAME 0x100485b20 -[CBL_RunLoopServer runServerThread] (CBL_Server.m:193)
7 Foundation 0x18515ae68 + 1024
8 libsystem_pthread.dylib 0x1836d9850 + 240
9 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
10 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#10. JIT Worklist Worker Thread
0 libsystem_kernel.dylib 0x183612e1c __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x1836d89c0 + 640
2 libc++.1.dylib 0x1830013ec std::__1::condition_variable::wait(std::__1::unique_lockstd::__1::mutex&) + 56
3 JavaScriptCore 0x188eb3da0 WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 2132
4 JavaScriptCore 0x188c8bad4 + 192
5 JavaScriptCore 0x188c8bf24 + 14
6 JavaScriptCore 0x1885fc15c + 212
7 JavaScriptCore 0x1885fc06c + 24
8 libsystem_pthread.dylib 0x1836d9850 + 240
9 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
10 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#11. WTF Parallel Helper Thread
0 libsystem_kernel.dylib 0x183612e1c __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x1836d89c0 + 640
2 libc++.1.dylib 0x1830013ec std::__1::condition_variable::wait(std::__1::unique_lockstd::__1::mutex&) + 56
3 JavaScriptCore 0x188eb3da0 WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 2132
4 JavaScriptCore 0x188eb3324 + 288
5 JavaScriptCore 0x188eb30c4 + 76
6 JavaScriptCore 0x1885fc15c + 212
7 JavaScriptCore 0x1885fc06c + 24
8 libsystem_pthread.dylib 0x1836d9850 + 240
9 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
10 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

#12. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#13. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7160 _pthread_wqthread + 968
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#14. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#15. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#16. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7160 _pthread_wqthread + 968
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#17. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7160 _pthread_wqthread + 968
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#18. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#19. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#20. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#21. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#22. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7160 _pthread_wqthread + 968
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#23. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#24. Thread
0 libsystem_kernel.dylib 0x183613a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1836d7344 _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x1836d6d8c start_wqthread + 4

#25. AFNetworking
0 libsystem_kernel.dylib 0x1835f5188 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1835f4ff8 mach_msg + 72
2 CoreFoundation 0x1845f45d0 + 192
3 CoreFoundation 0x1845f21ec + 1132
4 CoreFoundation 0x1845202b8 CFRunLoopRunSpecific + 444
5 Foundation 0x18505d26c + 304
6 Foundation 0x1850b1aa0 + 88
7 APPNAME 0x10031bda8 +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:170)
8 Foundation 0x18515ae68 + 1024
9 libsystem_pthread.dylib 0x1836d9850 + 240
10 libsystem_pthread.dylib 0x1836d9760 _pthread_start + 282
11 libsystem_pthread.dylib 0x1836d6d94 thread_start + 4

  • Version: 1.3.0
  • Client OS: iOS 10.2.0
@djpongh djpongh added the icebox label Dec 16, 2016
@snej snej mentioned this issue Dec 16, 2016
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@snej
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snej commented Dec 16, 2016

This appears to be a dup.

@snej snej closed this as completed Dec 16, 2016
@snej snej removed the icebox label Dec 16, 2016
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@snej @tommyle @djpongh