Crash on Hot Restart since 0.3.2

[Navil]

Since the upgrade to 0.3.2+beta I get the following crash when hot realoding while being logged in.

F/libc    ( 6603): Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0xbc in tid 6675 (1.ui), pid 6603 (com.example.app)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'google/sdk_gphone_x86/generic_x86:10/QSR1.190920.001/5891938:user/release-keys'
Revision: '0'
ABI: 'x86'
Timestamp: 2022-08-19 10:08:27-0300
pid: 6603, tid: 6675, name: 1.ui  >>> com.example.app <<<
uid: 10143
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0xbc
Cause: null pointer dereference
    eax 000000bc  ebx e746cc34  ecx 000000bc  edx 00000000
    edi aa1a23fc  esi 00000000
    ebp b9e3b2c8  esp b9e3b290  eip e746272f
backtrace:
      #00 pc 0011b72f  /apex/com.android.runtime/lib/bionic/libc.so (pthread_mutex_lock+31) (BuildId: 76290498408016ad14f4b98c3ab6c65c)
      #01 pc 00814eb0  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::mutex::lock()+32) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #02 pc 003ee9ac  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::SyncManager::unregister_session(std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char>> const&)+62) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #03 pc 003f75ac  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::SyncSession::close(realm::util::CheckedUniqueLock)+222) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #04 pc 003f8342  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::SyncSession::did_drop_external_reference()+160) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #05 pc 003fe25a  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::SyncSession::ExternalReference::~ExternalReference()+36) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #06 pc 003fe19b  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::__shared_ptr_emplace<realm::SyncSession::ExternalReference, std::__ndk1::allocator<realm::SyncSession::ExternalReference>>::__on_zero_shared()+35) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #07 pc 00814c2f  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::__shared_weak_count::__release_shared()+47) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #08 pc 00337cdb  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::shared_ptr<realm::SyncSession>::~shared_ptr()+39) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #09 pc 003bc9ba  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::_impl::RealmCoordinator::~RealmCoordinator()+272) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #10 pc 003c2943  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::__shared_ptr_emplace<realm::_impl::RealmCoordinator, std::__ndk1::allocator<realm::_impl::RealmCoordinator>>::__on_zero_shared()+35) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #11 pc 00814c2f  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::__shared_weak_count::__release_shared()+47) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #12 pc 00383c77  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::shared_ptr<realm::_impl::RealmCoordinator>::~shared_ptr()+39) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #13 pc 00383d7b  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::Realm::~Realm()+213) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #14 pc 00389dd5  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::__shared_ptr_emplace<realm::Realm, std::__ndk1::allocator<realm::Realm>>::__on_zero_shared()+35) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #15 pc 00814c2f  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::__shared_weak_count::__release_shared()+47) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #16 pc 003115eb  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (std::__ndk1::shared_ptr<realm::Realm>::~shared_ptr()+39) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #17 pc 0034aeac  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm::Object::~Object()+44) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #18 pc 003145ae  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm_object::~realm_object()+36) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #19 pc 003292e6  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/librealm_dart.so (realm_release+36) (BuildId: 067d9eb0740dc4998816b76a4b8471de111f1c75)
      #20 pc 01afa2ce  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/libflutter.so (BuildId: 9197c52dd6a1ea4a517099f1a8691b35298cd1ba)
      #21 pc 01a59678  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/libflutter.so (BuildId: 9197c52dd6a1ea4a517099f1a8691b35298cd1ba)
      #22 pc 01a5b121  /data/app/com.example.app-DSmEZ8JwP7rwJHGdxrOkkw==/lib/x86/libflutter.so (BuildId: 9197c52dd6a1ea4a517099f1a8691b35298cd1ba)
      #23 pc 000a29ff  [anon:libc_malloc]
Lost connection to device.
Performing hot restart...  

Edit: I am refering to hot restart, not hot reload (used the wrong term in the issue - title is correct tho)

[nirinchev]

Hey, thanks for the report! We've also started seeing this and I reported it as a Core bug here. We're going to investigate and come back to you when we have more information.

In the meantime, the following information will help us narrow down the problem:

1. Do you get this on every hot reload or only occasionally?
2. What version did you upgrade from and did you ever get it with the previous version of the dart SDK?

[Navil]

Hey, thanks for the report! We've also started seeing this and I reported it as a Core bug here. We're going to investigate and come back to you when we have more information.

In the meantime, the following information will help us narrow down the problem:

1. Do you get this on every hot reload or only occasionally?
2. What version did you upgrade from and did you ever get it with the previous version of the dart SDK?

1. I get the crash every single time when I hot restart (while being logged in).
2. I am using 0.3.2 now. Used 0.3.1 before and never experienced that issue.

I also just tested version 0.4.0 and the app crashed there constantly on hot restart too. Hot reload seems to work.

[Navil]

Works since 0.5.0+beta