Crash at grpc_endpoint_add_to_pollset_set(grpc_endpoint*, grpc_pollset_set*) + 0 #14323
Description
Description
Hello, we are receiving a lot of reports for this crash in grpc via crash reporting software. I could not reproduce it myself. I wonder if you might have any leads as to why does it crash as stack trace doesn't point anywhere but grpc. Thanks.
Reproducing the issue
N/A
Firebase SDK Version
11.5
Xcode Version
16.0
Installation Method
Zip
Firebase Product(s)
Firestore, Crashlytics, Authentication, Storage, Remote Config
Targeted Platforms
iOS
Relevant Log Output
data:text/text;charset=utf-8,
# Cause: Crash due to signal: SIGSEGV(SEGV_MAPERR) at 00000000
# Reported at: 2025-01-07 17:08:58 UTC
Thread 0 Queue 1: com.apple.main-thread (serial):
0 libsystem_kernel.dylib 0x1e086e788 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1e0871db0 mach_msg_overwrite + 423
2 libsystem_kernel.dylib 0x1e0871bfc mach_msg + 23
3 CoreFoundation 0x18f1ff7f4 __CFRunLoopServiceMachPort + 159
4 CoreFoundation 0x18f1feea0 __CFRunLoopRun + 1211
5 CoreFoundation 0x18f251274 CFRunLoopRunSpecific + 587
6 GraphicsServices 0x1dc46d4c0 GSEventRunModal + 163
7 UIKitCore 0x191da3664 -[UIApplication _run] + 815
8 UIKitCore 0x1919c9378 UIApplicationMain + 339
9 App 0x102992dc0 main (AppDelegate.swift:37)
Thread 1 com.apple.uikit.eventfetch-thread:
0 libsystem_kernel.dylib 0x1e086e788 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1e0871db0 mach_msg_overwrite + 423
2 libsystem_kernel.dylib 0x1e0871bfc mach_msg + 23
3 CoreFoundation 0x18f1ff7f4 __CFRunLoopServiceMachPort + 159
4 CoreFoundation 0x18f1feea0 __CFRunLoopRun + 1211
5 CoreFoundation 0x18f251274 CFRunLoopRunSpecific + 587
6 Foundation 0x18ddd2338 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 211
7 Foundation 0x18df2ee24 -[NSRunLoop(NSRunLoop) runUntilDate:] + 63
8 UIKitCore 0x191e36c8c -[UIEventFetcher threadMain] + 419
9 Foundation 0x18debe194 __NSThread__start__ + 723
10 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
11 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 2 com.apple.NSURLConnectionLoader:
0 libsystem_kernel.dylib 0x1e086e788 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1e0871db0 mach_msg_overwrite + 423
2 libsystem_kernel.dylib 0x1e0871bfc mach_msg + 23
3 CoreFoundation 0x18f1ff7f4 __CFRunLoopServiceMachPort + 159
4 CoreFoundation 0x18f1feea0 __CFRunLoopRun + 1211
5 CoreFoundation 0x18f251274 CFRunLoopRunSpecific + 587
6 CFNetwork 0x190776d44 +[__CFN_CoreSchedulingSetRunnable _run:] + 415
7 Foundation 0x18debe194 __NSThread__start__ + 723
8 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
9 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 3 com.google.firebase.crashlytics.MachExceptionServer:
0 libsystem_kernel.dylib 0x1e086e788 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1e0871db0 mach_msg_overwrite + 423
2 libsystem_kernel.dylib 0x1e0871bfc mach_msg + 23
3 FlexNetworkingProduction 0x103dc2818 FIRCLSMachExceptionServer + 103
4 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
5 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 4 Unknown:
0 Instabug 0x10665dd54 mach_exception_callback + 160
1 Instabug 0x10666c984 exception_server_thread + 323
2 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
3 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 5 Queue 776: com.google.firebase.firestore.rpc (serial):
0 libsystem_kernel.dylib 0x1e0882f40 poll + 8
1 FlexNetworkingProduction 0x1041fc900 pollset_work(grpc_pollset*, grpc_pollset_worker**, grpc_core::Timestamp) + 87
2 FlexNetworkingProduction 0x1041ca014 cq_next(grpc_completion_queue*, gpr_timespec, void*) + 395
3 FlexNetworkingProduction 0x104418d80 grpc::CompletionQueue::AsyncNextInternal(void**, bool*, gpr_timespec) + 59
4 FlexNetworkingProduction 0x103e1ba64 firebase::firestore::remote::Datastore::PollGrpcQueue() + 83
5 FlexNetworkingProduction 0x103f2d064 firebase::firestore::util::Task::ExecuteAndRelease() + 187
6 libdispatch.dylib 0x196f50fa8 _dispatch_client_callout + 19
7 libdispatch.dylib 0x196f585cc _dispatch_lane_serial_drain + 767
8 libdispatch.dylib 0x196f59124 _dispatch_lane_invoke + 379
9 libdispatch.dylib 0x196f6438c _dispatch_root_queue_drain_deferred_wlh + 287
10 libdispatch.dylib 0x196f63bd8 _dispatch_workloop_worker_thread + 539
11 libsystem_pthread.dylib 0x219f4c680 _pthread_wqthread + 287
12 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 6 com.apple.CoreMotion.MotionThread:
0 libsystem_kernel.dylib 0x1e086e788 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1e0871db0 mach_msg_overwrite + 423
2 libsystem_kernel.dylib 0x1e0871bfc mach_msg + 23
3 CoreFoundation 0x18f1ff7f4 __CFRunLoopServiceMachPort + 159
4 CoreFoundation 0x18f1feea0 __CFRunLoopRun + 1211
5 CoreFoundation 0x18f251274 CFRunLoopRunSpecific + 587
6 CoreFoundation 0x18f264814 CFRunLoopRun + 63
7 CoreMotion 0x19c8dd940 CFCopyDescription + 6713809215
8 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
9 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 7 Realm notification listener:
0 libsystem_kernel.dylib 0x1e08754cc kevent + 8
1 Realm 0x106d5d3a4 0x106a98000
2 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
3 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 8 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x1043618a4 gpr_cv_wait + 159
2 FlexNetworkingProduction 0x104205098 grpc_core::Executor::ThreadMain(void*) + 191
3 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
4 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
5 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 9 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x1043618a4 gpr_cv_wait + 159
2 FlexNetworkingProduction 0x104205098 grpc_core::Executor::ThreadMain(void*) + 191
3 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
4 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
5 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 10 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x1043618a4 gpr_cv_wait + 159
2 FlexNetworkingProduction 0x104378904 timer_thread(void*) + 519
3 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
4 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
5 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 11 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x1043777ec grpc_event_engine::experimental::TimerManager::WaitUntil(grpc_core::Timestamp) + 279
3 FlexNetworkingProduction 0x1043780d4 void absl::lts_20240116::internal_any_invocable::RemoteInvoker<false, void, grpc_event_engine::experimental::TimerManager::MainLoop()::$_0&>(absl::lts_20240116::internal_any_invocable::TypeErasedState*) + 39
4 FlexNetworkingProduction 0x10413a330 grpc_event_engine::experimental::SelfDeletingClosure::Run() + 31
5 FlexNetworkingProduction 0x104398ac4 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() + 127
6 FlexNetworkingProduction 0x1043987dc grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() + 147
7 FlexNetworkingProduction 0x104399038 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) + 19
8 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
9 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
10 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 12 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x104398ecc grpc_event_engine::experimental::WorkStealingThreadPool::WorkSignal::WaitWithTimeout(grpc_core::Duration) + 123
3 FlexNetworkingProduction 0x104398bd0 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() + 395
4 FlexNetworkingProduction 0x1043987dc grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() + 147
5 FlexNetworkingProduction 0x104399038 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) + 19
6 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
7 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
8 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 13 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x104398ecc grpc_event_engine::experimental::WorkStealingThreadPool::WorkSignal::WaitWithTimeout(grpc_core::Duration) + 123
3 FlexNetworkingProduction 0x104398bd0 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() + 395
4 FlexNetworkingProduction 0x1043987dc grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() + 147
5 FlexNetworkingProduction 0x104399038 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) + 19
6 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
7 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
8 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 14 Unknown [Crashed]:
0 FlexNetworkingProduction 0x1041f1100 grpc_endpoint_add_to_pollset_set(grpc_endpoint*, grpc_pollset_set*) + 0
1 FlexNetworkingProduction 0x1041839f0 perform_transport_op_locked(void*, absl::lts_20240116::Status) + 155
2 FlexNetworkingProduction 0x1041c3f00 grpc_combiner_continue_exec_ctx() + 163
3 FlexNetworkingProduction 0x1042045e4 grpc_core::ExecCtx::Flush() + 307
4 FlexNetworkingProduction 0x1041c47b8 void absl::lts_20240116::internal_any_invocable::LocalInvoker<false, void, queue_offload(grpc_core::Combiner*)::$_0&>(absl::lts_20240116::internal_any_invocable::TypeErasedState*) + 67
5 FlexNetworkingProduction 0x10413a330 grpc_event_engine::experimental::SelfDeletingClosure::Run() + 31
6 FlexNetworkingProduction 0x104398ac4 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() + 127
7 FlexNetworkingProduction 0x1043987dc grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() + 147
8 FlexNetworkingProduction 0x104399038 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) + 19
9 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
10 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
11 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 15 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x104398ecc grpc_event_engine::experimental::WorkStealingThreadPool::WorkSignal::WaitWithTimeout(grpc_core::Duration) + 123
3 FlexNetworkingProduction 0x104398bd0 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() + 395
4 FlexNetworkingProduction 0x1043987dc grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() + 147
5 FlexNetworkingProduction 0x104399038 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) + 19
6 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
7 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
8 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 16 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x104398ecc grpc_event_engine::experimental::WorkStealingThreadPool::WorkSignal::WaitWithTimeout(grpc_core::Duration) + 123
3 FlexNetworkingProduction 0x104398bd0 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() + 395
4 FlexNetworkingProduction 0x1043987dc grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() + 147
5 FlexNetworkingProduction 0x104399038 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) + 19
6 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
7 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
8 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 17 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x10439828c grpc_core::Notification::WaitForNotificationWithTimeout(absl::lts_20240116::Duration) + 219
3 FlexNetworkingProduction 0x10439815c grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::Lifeguard::LifeguardMain() + 311
4 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
5 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
6 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 18 com.apple.CFStream.LegacyThread:
0 libsystem_kernel.dylib 0x1e086e788 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1e0871db0 mach_msg_overwrite + 423
2 libsystem_kernel.dylib 0x1e0871bfc mach_msg + 23
3 CoreFoundation 0x18f1ff7f4 __CFRunLoopServiceMachPort + 159
4 CoreFoundation 0x18f1feea0 __CFRunLoopRun + 1211
5 CoreFoundation 0x18f251274 CFRunLoopRunSpecific + 587
6 CoreFoundation 0x18f263504 _legacyStreamRunLoop_workThread + 299
7 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
8 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 19 com.apple.CFSocket.private:
0 libsystem_kernel.dylib 0x1e0876334 __select + 8
1 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
2 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 20 Unknown:
0 libsystem_kernel.dylib 0x1e0874090 __psynch_cvwait + 8
1 FlexNetworkingProduction 0x104361894 gpr_cv_wait + 143
2 FlexNetworkingProduction 0x104378904 timer_thread(void*) + 519
3 FlexNetworkingProduction 0x1043722c0 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) + 139
4 libsystem_pthread.dylib 0x219f4a7d0 _pthread_start + 135
5 libsystem_pthread.dylib 0x219f4a480 thread_start + 7
Thread 21 Unknown:
0 libsystem_pthread.dylib 0x219f4a46c start_wqthread + 0
Thread 22 Unknown:
0 libsystem_pthread.dylib 0x219f4a46c start_wqthread + 0
Thread 23 Queue 411: com.mixpanel.6f85ead19b5cc0b3d378c31c1512413d.network) (serial):
0 libsystem_kernel.dylib 0x1e086e71c semaphore_timedwait_trap + 8
1 libdispatch.dylib 0x196f51bc0 _dispatch_semaphore_wait_slow + 75
2 libswiftDispatch.dylib 0x1985b0ad8 OS_dispatch_semaphore.wait(wallTimeout:) + 23
3 App 0x102baeaf8 FlushRequest.sendRequest(_:type:useIP:headers:queryItems:) + 1099
4 App 0x102bae204 Flush.flushQueueInBatches(_:type:headers:queryItems:) + 991
5 App 0x102bcd86c MixpanelInstance.flushQueue(_:type:) + 323
6 App 0x102bcd418 closure #1 in closure #1 in MixpanelInstance.flush(performFullFlush:completion:) + 211
7 App 0x102aae84c thunk for @escaping @callee_guaranteed @Sendable () -> () (<compiler-generated>:0)
8 libdispatch.dylib 0x196f4f248 _dispatch_call_block_and_release + 31
9 libdispatch.dylib 0x196f50fa8 _dispatch_client_callout + 19
10 libdispatch.dylib 0x196f585cc _dispatch_lane_serial_drain + 767
11 libdispatch.dylib 0x196f59158 _dispatch_lane_invoke + 431
12 libdispatch.dylib 0x196f6438c _dispatch_root_queue_drain_deferred_wlh + 287
13 libdispatch.dylib 0x196f63bd8 _dispatch_workloop_worker_thread + 539
14 libsystem_pthread.dylib 0x219f4c680 _pthread_wqthread + 287
15 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 24 Queue 39: com.apple.network.connections (serial):
0 libsystem_kernel.dylib 0x1e0874cb0 sendto + 8
1 Network 0x18f813540 sa_dst_lookup(sockaddr const*, unsigned int, Destination*) + 647
2 Network 0x18f811590 sa_dst_compare_internal + 223
3 Network 0x18f81046c ___ZL34nw_resolver_insert_endpoint_lockedP22NWConcrete_nw_resolverPU25objcproto14OS_nw_endpoint8NSObjectU13block_pointerFbS3_S3_E_block_invoke + 967
4 Network 0x18f6d1b50 nw_array_apply + 123
5 Network 0x18f756cf8 nw_resolver_insert_endpoint_locked(NWConcrete_nw_resolver*, NSObject<OS_nw_endpoint>*, bool (NSObject<OS_nw_endpoint>*, NSObject<OS_nw_endpoint>*) block_pointer) + 255
6 Network 0x18f753adc nw_resolver_insert_address(NWConcrete_nw_resolver*, NSObject<OS_dnssd_getaddrinfo_result>*, sockaddr const*, unsigned short, NSObject<OS_dispatch_data>*) + 791
7 Network 0x18f8d0a58 __ZL41nw_resolver_create_dns_getaddrinfo_lockedP22NWConcrete_nw_resolverP30NWConcrete_nw_resolver_service_block_invoke_2.203 + 9051
8 libdns_services.dylib 0x21a077198 ___dnssd_getaddrinfo_activate_block_invoke + 215
9 libdispatch.dylib 0x196f50fa8 _dispatch_client_callout + 19
10 libdispatch.dylib 0x196f5445c _dispatch_continuation_pop + 595
11 libdispatch.dylib 0x196f68620 _dispatch_source_latch_and_call + 419
12 libdispatch.dylib 0x196f671e8 _dispatch_source_invoke + 835
13 libdispatch.dylib 0x196f5a5c0 _dispatch_workloop_invoke + 1743
14 libdispatch.dylib 0x196f6438c _dispatch_root_queue_drain_deferred_wlh + 287
15 libdispatch.dylib 0x196f63bd8 _dispatch_workloop_worker_thread + 539
16 libsystem_pthread.dylib 0x219f4c680 _pthread_wqthread + 287
17 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 25 Queue 410: com.mixpanel.6f85ead19b5cc0b3d378c31c1512413d.tracking) (serial):
0 Network 0x18f6d5cc0 nw_path_network_is_satisfied_update_reason(NWConcrete_nw_path*, bool) + 392
1 Network 0x18f7b9950 nw_path_get_interface_index + 67
2 SystemConfiguration 0x19a8885f4 ____SCNetworkReachabilityRestartResolver_block_invoke_2 + 159
3 Network 0x18f704a04 ___ZL25nw_resolver_update_clientP22NWConcrete_nw_resolverU13block_pointerFvvE_block_invoke + 87
4 libdispatch.dylib 0x196f4f248 _dispatch_call_block_and_release + 31
5 libdispatch.dylib 0x196f50fa8 _dispatch_client_callout + 19
6 libdispatch.dylib 0x196f585cc _dispatch_lane_serial_drain + 767
7 libdispatch.dylib 0x196f59158 _dispatch_lane_invoke + 431
8 libdispatch.dylib 0x196f6438c _dispatch_root_queue_drain_deferred_wlh + 287
9 libdispatch.dylib 0x196f63bd8 _dispatch_workloop_worker_thread + 539
10 libsystem_pthread.dylib 0x219f4c680 _pthread_wqthread + 287
11 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 26 Queue 655: NSOperationQueue 0x111270600 (QOS: UTILITY) (concurrent):
0 libsystem_kernel.dylib 0x1e0875748 __psynch_cvbroad + 8
1 Foundation 0x18ddf22dc +[__NSOperationInternalObserver _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:] + 1127
2 Foundation 0x18ddf1d94 -[NSOperation start] + 1355
3 Foundation 0x18de28f40 __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__ + 15
4 Foundation 0x18de28b70 __NSOQSchedule_f + 171
5 libdispatch.dylib 0x196f4f248 _dispatch_call_block_and_release + 31
6 libdispatch.dylib 0x196f50fa8 _dispatch_client_callout + 19
7 libdispatch.dylib 0x196f5445c _dispatch_continuation_pop + 595
8 libdispatch.dylib 0x196f53a8c _dispatch_async_redirect_invoke + 579
9 libdispatch.dylib 0x196f62ec0 _dispatch_root_queue_drain + 391
10 libdispatch.dylib 0x196f636c4 _dispatch_worker_thread2 + 155
11 libsystem_pthread.dylib 0x219f4c644 _pthread_wqthread + 227
12 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 27 Unknown:
0 libsystem_pthread.dylib 0x219f4a46c start_wqthread + 0
Thread 28 Queue 18: com.apple.root.user-initiated-qos.cooperative (concurrent):
0 CoreGraphics 0x19120cde4 argb32_sample_rectilinear_argb32 + 860
1 CoreGraphics 0x19125df84 argb32_image + 1883
2 CoreGraphics 0x19126cb1c ripl_Mark + 35
3 CoreGraphics 0x19126bfe8 RIPLayerBltImage + 751
4 CoreGraphics 0x19125b780 ripc_DrawImage + 903
5 CoreGraphics 0x19124bb28 CG::DisplayList::executeEntries(std::__1::__wrap_iter<std::__1::shared_ptr<CG::DisplayListEntry const>*>, std::__1::__wrap_iter<std::__1::shared_ptr<CG::DisplayListEntry const>*>, CGContextDelegate*, CGRenderingState*, CGGStack*, CGRect const*, __CFDictionary const*, bool) + 5731
6 CoreGraphics 0x19122f578 CGDisplayListDrawInContextDelegate + 319
7 CoreGraphics 0x19127fdbc rip_auto_context_rasterization_loop + 2011
8 CoreGraphics 0x19127f5ac rip_auto_context_create_image + 55
9 UIKitCore 0x191afe000 -[UIGraphicsImageRendererContext currentImage] + 31
10 UIKitCore 0x191afdfb0 __44-[UIGraphicsImageRenderer imageWithActions:]_block_invoke + 27
11 UIKitCore 0x191afd39c -[UIGraphicsRenderer runDrawingActions:completionActions:format:error:] + 359
12 UIKitCore 0x191afd204 -[UIGraphicsRenderer runDrawingActions:completionActions:error:] + 91
13 UIKitCore 0x191afd130 -[UIGraphicsImageRenderer imageWithActions:] + 183
14 FlexWorkout 0x105f0a080 specialized static ExerciseDiagramBuilder.buildImage(muscleGroups:diagramView:baseTintColor:) (ExerciseDiagramBuilder.swift:20)
15 FlexWorkout 0x105f63b08 protocol witness for AnyExerciseDiagramBuilderService.buildMuscleRecoveryImage(muscleRecoveryInfo:baseTintColor:) in conformance ExerciseDiagramBuilderService.Provider (<compiler-generated>:33)
16 FlexWidget 0x105edf4b8 WidgetMuscleRecoveryTimelineService.Provider.convert(infos:date:) (WidgetMuscleRecoveryTimelineService+Provider.swift:114)
17 FlexWidget 0x105edeeb0 WidgetMuscleRecoveryTimelineService.Provider.updateInfo() (WidgetMuscleRecoveryTimelineService+Provider.swift:86)
18 libswift_Concurrency.dylib 0x19aae0f5c swift::runJobInEstablishedExecutorContext(swift::Job*) + 251
19 libswift_Concurrency.dylib 0x19aae2514 swift_job_runImpl(swift::Job*, swift::SerialExecutorRef) + 143
20 libdispatch.dylib 0x196f62ec0 _dispatch_root_queue_drain + 391
21 libdispatch.dylib 0x196f636c4 _dispatch_worker_thread2 + 155
22 libsystem_pthread.dylib 0x219f4c644 _pthread_wqthread + 227
23 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 29 Unknown:
0 libsystem_kernel.dylib 0x1e086e510 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 30 Queue 633: NSOperationQueue 0x11111b800 (QOS: UTILITY) (concurrent):
0 libsystem_kernel.dylib 0x1e0874b78 __psynch_mutexwait + 8
1 libsystem_pthread.dylib 0x219f4d250 _pthread_mutex_firstfit_lock_slow + 219
2 libsystem_pthread.dylib 0x219f4d024 _pthread_cond_wait + 1343
3 Foundation 0x18de4885c -[NSOperation waitUntilFinished] + 507
4 Foundation 0x18de48658 __NSOPERATIONQUEUE_IS_WAITING_ON_AN_OPERATION__ + 15
5 Foundation 0x18de485ec -[NSOperationQueue addOperations:waitUntilFinished:] + 159
6 WatchConnectivity 0x22f17f4dc -[WCContentIndex index] + 143
7 WatchConnectivity 0x22f188460 -[WCFileStorage enumerateIncomingUserInfosWithBlock:] + 207
8 WatchConnectivity 0x22f17ad14 __49-[WCSession handleIncomingUserInfoWithPairingID:]_block_invoke_2 + 271
9 Foundation 0x18de03efc __NSINDEXSET_IS_CALLING_OUT_TO_A_BOOL_BLOCK__ + 23
10 Foundation 0x18ddf3758 -[NSBlockOperation main] + 103
11 Foundation 0x18ddf3678 __NSOPERATION_IS_INVOKING_MAIN__ + 15
12 Foundation 0x18ddf1ad0 -[NSOperation start] + 647
13 Foundation 0x18de28f40 __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__ + 15
14 Foundation 0x18de28b70 __NSOQSchedule_f + 171
15 libdispatch.dylib 0x196f4f248 _dispatch_call_block_and_release + 31
16 libdispatch.dylib 0x196f50fa8 _dispatch_client_callout + 19
17 libdispatch.dylib 0x196f5445c _dispatch_continuation_pop + 595
18 libdispatch.dylib 0x196f53a8c _dispatch_async_redirect_invoke + 579
19 libdispatch.dylib 0x196f62ec0 _dispatch_root_queue_drain + 391
20 libdispatch.dylib 0x196f636c4 _dispatch_worker_thread2 + 155
21 libsystem_pthread.dylib 0x219f4c644 _pthread_wqthread + 227
22 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
Thread 31 Queue 129: com.apple.dnssd.client (serial):
0 libsystem_malloc.dylib 0x19f7b14c8 _nanov2_free + 164
1 libdispatch.dylib 0x196f4fc20 _dispatch_dispose + 231
2 libdispatch.dylib 0x196f6eb78 _dispatch_mach_msg_async_reply_invoke + 359
3 libdispatch.dylib 0x196f5842c _dispatch_lane_serial_drain + 351
4 libdispatch.dylib 0x196f59124 _dispatch_lane_invoke + 379
5 libdispatch.dylib 0x196f6438c _dispatch_root_queue_drain_deferred_wlh + 287
6 libdispatch.dylib 0x196f63bd8 _dispatch_workloop_worker_thread + 539
7 libsystem_pthread.dylib 0x219f4c680 _pthread_wqthread + 287
8 libsystem_pthread.dylib 0x219f4a474 start_wqthread + 7
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