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  1. Realm JavaScript SDK
  2. RJS-430

iOS Crash - EXC_BAD_ACCESS

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      Goals

      • Regular use

      Expected Results

      • Regular use

      Actual Results

      Our crash reporting tool reported the following iOS crash/exception coming from RealmJS. While I do not have any steps to reproduce or anything specific to share (just regular use, no sync), the crash happened right before the "app will terminate" event.

      Below is the crash log:

      EXC_BAD_ACCESS Attempted to dereference garbage pointer 0x10. 
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::JSGlobalObject::getOwnPropertySlot(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::JSProxy::getOwnPropertySlot(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::JSObject::get(JSC::ExecState*, JSC::PropertyName) const
    Frameworks/JavaScriptCore.framework/JavaScriptCore _JSObjectGetProperty
    zinspector3 void std::__1::__call_once_proxy<std::__1::tuple<realm::SyncManager& realm::js::syncManagerShared<realm::jsc::Types>(realm::jsc::Types::Context&)::{lambda()#1}&&> >(void*)
    zinspector3 void std::__1::__call_once_proxy<std::__1::tuple<realm::SyncManager& realm::js::syncManagerShared<realm::jsc::Types>(realm::jsc::Types::Context&)::{lambda()#1}&&> >(void*)
    zinspector3 realm::jsc::ObjectWrap<realm::js::AsyncOpenTaskClass<realm::jsc::Types> >::set_readonly_property(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSString*, OpaqueJSValue const*, OpaqueJSValue const**)
    zinspector3 OpaqueJSValue const* realm::js::wrap<&realm::js::RealmClass<realm::jsc::Types>::create>(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSValue*, unsigned long, OpaqueJSValue const* const*, OpaqueJSValue const**)
    Frameworks/JavaScriptCore.framework/JavaScriptCore long long JSC::APICallbackFunction::call<JSC::JSCallbackFunction>(JSC::ExecState*)
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _vmEntryToJavaScript
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore _JSObjectCallAsFunction
    zinspector3 realm::jsc::ObjectWrap<realm::js::AsyncOpenTaskClass<realm::jsc::Types> >::set_readonly_property(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSString*, OpaqueJSValue const*, OpaqueJSValue const**)
    zinspector3 OpaqueJSValue const* realm::js::wrap<&realm::js::RealmClass<realm::jsc::Types>::write>(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSValue*, unsigned long, OpaqueJSValue const* const*, OpaqueJSValue const**)
    Frameworks/JavaScriptCore.framework/JavaScriptCore long long JSC::APICallbackFunction::call<JSC::JSCallbackFunction>(JSC::ExecState*)
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _llint_entry
    Frameworks/JavaScriptCore.framework/JavaScriptCore _vmEntryToJavaScript
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::boundThisNoArgsFunctionCall(JSC::ExecState*)
    Frameworks/JavaScriptCore.framework/JavaScriptCore _vmEntryToNative
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    Frameworks/JavaScriptCore.framework/JavaScriptCore _JSObjectCallAsFunction
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    Frameworks/CoreFoundation.framework/CoreFoundation ___CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__
    Frameworks/CoreFoundation.framework/CoreFoundation ___CFRunLoopDoBlocks
    Frameworks/CoreFoundation.framework/CoreFoundation ___CFRunLoopRun
    Frameworks/CoreFoundation.framework/CoreFoundation _CFRunLoopRunSpecific
    zinspector3 facebook::react::JSIExecutor::defaultTimeoutInvoker(std::__1::function<void ()> const&, std::__1::function<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > ()>)
    Frameworks/Foundation.framework/Foundation -[NSThread main]
    Frameworks/Foundation.framework/Foundation ___NSThread__start__
    /usr/lib/system/libsystem_pthread.dylib __pthread_start

      Steps to Reproduce

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      Code Sample

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      Version of Realm and Tooling

      • Realm JS SDK Version: 3.6.3
      • Node or React Native: 0.61.5
      • Client OS & Version: iOS 13.3
      • Which debugger for React Native: None

            Assignee:
            Unassigned Unassigned
            Reporter:
            unitosyncbot Unito Sync Bot
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            Watchers:
            1 Start watching this issue

              Created:
              Updated:
              Resolved: