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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: Sync
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Labels:
How frequently does the bug occur?
Sometimes
Description
We just rarely receive crash reports in the Crashlytics
Stacktrace & log output
The app was in the background for 20 minutes and then received some time to run in the background or was moving to the active state and crashed. One log also had Reading failed: Premature end of input and Connection[1]: Connection closed due to error errors but another one didn't. Not sure if important but also realm.refresh() method was called on two different Sync Realms. Overall, looks like network connection, obviously, becomes broken after app spends too much time in the background and then the app may crash when becoming active:
Crashed: Thread 0 libsystem_kernel.dylib 0x7964 __pthread_kill + 8 1 libsystem_pthread.dylib 0x7378 pthread_kill + 268 2 libsystem_c.dylib 0x1ff50 abort + 164 3 Divtracker 0x293238 std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::operator<<<std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char) + 203116 4 Divtracker 0x2933a8 realm::util::terminate_internal(std::__1::basic_stringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >&) + 203484 5 Divtracker 0x293520 realm::util::terminate(char const*, char const*, long, std::initializer_list<realm::util::Printable>&&) + 203860 6 Divtracker 0x3160d8 realm::util::network::Service::BasicStreamOps<realm::util::network::ssl::Stream>::BufferedReadOperBase::advance() + 739340 7 Divtracker 0x3159e4 void realm::util::network::Service::BasicStreamOps<realm::util::network::ssl::Stream>::async_buffered_read<std::__1::function<void (std::__1::error_code, unsigned long)> >(realm::util::network::ssl::Stream&, char*, unsigned long, int, realm::util::network::ReadAheadBuffer&, std::__1::function<void (std::__1::error_code, unsigned long)>) + 737560 8 Divtracker 0x310cb8 realm::util::websocket::(anonymous namespace)::EZSocketImpl::async_read(char*, unsigned long, std::__1::function<void (std::__1::error_code, unsigned long)>) + 717804 9 Divtracker 0x32200c (anonymous namespace)::WebSocket::frame_reader_loop() + 788288 10 Divtracker 0x3162dc void realm::util::network::Service::AsyncOper::do_recycle_and_execute<std::__1::function<void (std::__1::error_code, unsigned long)>, std::__1::error_code&, unsigned long&>(bool, std::__1::function<void (std::__1::error_code, unsigned long)>&, std::__1::error_code&, unsigned long&) + 739856 11 Divtracker 0x315df0 realm::util::network::Service::BasicStreamOps<realm::util::network::ssl::Stream>::BufferedReadOper<std::__1::function<void (std::__1::error_code, unsigned long)> >::recycle_and_execute() + 738596 12 Divtracker 0x318f8c realm::util::network::Service::Impl::run() + 751296 13 Divtracker 0x2b3d94 realm::sync::Client::run() + 337096 14 Divtracker 0x41a8bc void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, realm::_impl::SyncClient::SyncClient(std::__1::unique_ptr<realm::util::Logger, std::__1::default_delete<realm::util::Logger> >, realm::SyncClientConfig const&, std::__1::weak_ptr<realm::SyncManager const>)::'lambda0'()> >(void*) + 548316 15 libsystem_pthread.dylib 0x19a4 _pthread_start + 148 16 libsystem_pthread.dylib 0xea0 thread_start + 8
The app tried to open Realm synchronously and crashed, not sure if important but there was also remote function call in parallel:
Crashed: RealmManager.realm 0 libsystem_kernel.dylib 0x7b78 __pthread_kill + 8 1 libsystem_pthread.dylib 0x73bc pthread_kill + 268 2 libsystem_c.dylib 0x2051c abort + 168 3 Divtracker 0x293238 std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::operator<<<std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char) + 203116 4 Divtracker 0x2933a8 realm::util::terminate_internal(std::__1::basic_stringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >&) + 203484 5 Divtracker 0x293520 realm::util::terminate(char const*, char const*, long, std::initializer_list<realm::util::Printable>&&) + 203860 6 Divtracker 0x149078 realm::Cluster::init(realm::MemRef) + 48532 7 Divtracker 0x157794 realm::ClusterTree::create_root_from_parent(realm::ArrayParent*, unsigned long) + 107696 8 Divtracker 0x157b5c realm::ClusterTree::init_from_parent() + 108664 9 Divtracker 0x2567e8 realm::Table::init(unsigned long, realm::ArrayParent*, unsigned long, bool, bool) + 469164 10 Divtracker 0x17c12c realm::Group::create_table_accessor(unsigned long) + 257608 11 Divtracker 0x17be14 realm::Group::do_get_table(unsigned long) + 256816 12 Divtracker 0x36a3f8 realm::ObjectSchema::ObjectSchema(realm::Group const&, realm::StringData, realm::TableKey) + 22420 13 Divtracker 0x372fa0 realm::ObjectStore::schema_from_group(realm::Group const&) + 58172 14 Divtracker 0x3bfae4 realm::Realm::read_schema_from_group_if_needed() + 176132 15 Divtracker 0x3bf7f0 realm::Realm::Realm(realm::Realm::Config, realm::util::Optional<realm::VersionID>, std::__1::shared_ptr<realm::_impl::RealmCoordinator>, realm::Realm::MakeSharedTag) + 175376 16 Divtracker 0x3405c8 realm::Realm::make_shared_realm(realm::Realm::Config, realm::util::Optional<realm::VersionID>, std::__1::shared_ptr<realm::_impl::RealmCoordinator>) + 912636 17 Divtracker 0x33faec realm::_impl::RealmCoordinator::do_get_realm(realm::Realm::Config, std::__1::shared_ptr<realm::Realm>&, realm::util::Optional<realm::VersionID>, realm::util::CheckedUniqueLock&) + 909856 18 Divtracker 0x33f7a4 realm::_impl::RealmCoordinator::get_realm(realm::Realm::Config, realm::util::Optional<realm::VersionID>) + 909016 19 Divtracker 0x3c05c4 realm::Realm::get_shared_realm(realm::Realm::Config) + 178916 20 Divtracker 0xa2a4bc +[RLMRealm realmWithConfiguration:queue:error:] + 869 (shared_ptr.h:869) 21 Divtracker 0xab76ec Realm.init(configuration:queue:) + 1580652 (<compiler-generated>:1580652) 22 Divtracker 0xce75c closure #1 in static RealmManager.syncOpenRealm(configuration:) + 2019 (RealmManager.swift:2019) 23 Divtracker 0xe33b0 partial apply for closure #1 in static RealmManager.syncOpenRealm(configuration:) + 4309595056 (<compiler-generated>:4309595056) 24 Divtracker 0xb972dc MapSink.on(_:) + 43 (Map.swift:43) 25 Divtracker 0xb974a0 protocol witness for ObserverType.on(_:) in conformance MapSink<A, B> + 2497568 (<compiler-generated>:2497568) 26 Divtracker 0xba48f8 ObserveOnSink.run(_:_:) + 133 (ObserveOn.swift:133) 27 Divtracker 0xba5b10 partial apply for thunk for @escaping @callee_guaranteed (@unowned @callee_guaranteed () -> ()) -> () + 2556560 (<compiler-generated>:2556560) 28 Divtracker 0xbb312c partial apply for thunk for @escaping @callee_guaranteed (@in_guaranteed A, @unowned @callee_guaranteed @substituted <A> (@in_guaranteed A) -> () for <A>) -> () + 2611372 (<compiler-generated>:2611372) 29 Divtracker 0xbb2870 closure #1 in RecursiveImmediateScheduler.schedule(_:) + 2609136 (<compiler-generated>:2609136) 30 Divtracker 0xc12718 partial apply for closure #1 in DispatchQueueConfiguration.schedule<A>(_:action:) + 90 (DispatchQueueScheduler.swift:90) 31 Divtracker 0xa01a8 thunk for @escaping @callee_guaranteed () -> () + 4309320104 (<compiler-generated>:4309320104) 32 libdispatch.dylib 0x1e68 _dispatch_call_block_and_release + 32 33 libdispatch.dylib 0x3a2c _dispatch_client_callout + 20 34 libdispatch.dylib 0xb124 _dispatch_lane_serial_drain + 668 35 libdispatch.dylib 0xbcb4 _dispatch_lane_invoke + 444 36 libdispatch.dylib 0x16500 _dispatch_workloop_worker_thread + 648 37 libsystem_pthread.dylib 0x10bc _pthread_wqthread + 288 38 libsystem_pthread.dylib 0xe5c start_wqthread + 8
Can you reproduce the bug?
Not yet
Reproduction Steps
Unknown but for the first crash log it looks related to network connection timeout after leaving from the background
Version
10.25.0 and previous since I have continuous crash reports for 90 days
What SDK flavour are you using?
MongoDB Realm (i.e. Sync, auth, functions)
Are you using encryption?
No, not using encryption
Platform OS and version(s)
iPadOS 15.4.0, iPadOS 15.3.1, iOS 15.4.1, ...
Build environment
ProductName: macOS ProductVersion: 12.3.1 BuildVersion: 21E258 /Applications/Xcode.app/Contents/Developer Xcode 13.3.1 Build version 13E500a /usr/local/bin/pod 1.11.3 Realm (10.25.0) RealmSwift (10.25.0) /bin/bash GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin21) /usr/local/bin/carthage 0.38.0 (not in use here) /usr/bin/git git version 2.32.0 (Apple Git-132)