Xamarin-macios: Entity Framework crashes on Xamarin iOS Device when entity contains many columns

Created on 14 Oct 2018  路  16Comments  路  Source: xamarin/xamarin-macios

Steps to Reproduce

  1. Create a Xamarin.Forms project targeting iOS
  2. Install Entity Framework Core nuget for SQLite version 2.1.4
  3. Add the following class
public class JobSetup
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid ID { get; set; }
    public int? MinimumCrewSize { get; set; }
    public int? MaximumCrewSize { get; set; }
    public int? ForemenForLoadDeliver { get; set; }
    public int? ForemenForShuttle { get; set; }
    public int? ForemenForPush { get; set; }
    public int? TimeForCleanup { get; set; }
    public int? TimeForSetup { get; set; }
    public int? TimeForToFromJob { get; set; }
    public int? TimeForOriginToDest { get; set; }
    public int? TimeForMinShift { get; set; }
    public int? TimeForNormalShift { get; set; }
    public int? TimeForMaxShift { get; set; }
    public int? CubesPerHourForPush { get; set; }
    public double? AccessFactorPer100Feet { get; set; }
    public double? AccessFactorPerElevatorFloor { get; set; }
    public double? AccessFactorPerStairFlight { get; set; }
    public double? AdjBldgToBldgPush { get; set; }
    public double? AdjBldgToBldgTruck { get; set; }
    public double? AdjLoadBldgToTruck { get; set; }
    public double? AdjUnloadTruckToBldg { get; set; }
    public double? AdjSameBldgSameFloor { get; set; }
    public double? AdjSameBldgDiffFloor { get; set; }
    public double? AdjStageReplaceSameFloor { get; set; }
    public double? AdjStageReplaceDiffFloor { get; set; }
}
  1. Add the following app DB context
public class AppDbContext : DbContext
{
    public AppDbContext(DbContextOptions<AppDbContext> options)
        : base(options)
    {

    }
    public DbSet<JobSetup> JobSetups { get; set; }
}
  1. Call this method in MainPage.xaml.cs
private async void Test()
{
    var path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "..", "Library", "Test.db");
    if (File.Exists(path))
    {
        File.Delete(path);
    }
    DbContextOptions<AppDbContext> options = new DbContextOptionsBuilder<AppDbContext>()
                                             .UseSqlite($"Filename={path}")
                                             .Options;
    var dbContext = new AppDbContext(options);
    await dbContext.Database.EnsureCreatedAsync();
    var js = new JobSetup();
    dbContext.JobSetups.Add(js);
    await dbContext.SaveChangesAsync();
}
  1. Run the app on a iOS device. Mine is iPad Mini 2, with iOS 11.4.1
  2. Observe that application crashes at line dbContext.JobSetups.Add(js); with the following stack trace 

2018-10-14 09:59:36.678 EFCoreTest.iOS[337:13033] error: * Assertion at ../../../../../mono/mini/mini-arm64.c:1818, condition `buffer_offset <= 256' not met
2018-10-14 09:59:36.679 EFCoreTest.iOS[337:13033] critical: Stacktrace:

2018-10-14 09:59:36.679 EFCoreTest.iOS[337:13033] critical:   at <unknown> <0xffffffff>
2018-10-14 09:59:36.679 EFCoreTest.iOS[337:13033] critical:   at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&) <0x00007>
2018-10-14 09:59:36.681 EFCoreTest.iOS[337:13033] critical:   at System.Reflection.MonoCMethod.InternalInvoke (object,object[]) [0x00002] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:661
2018-10-14 09:59:36.681 EFCoreTest.iOS[337:13033] critical:   at System.Reflection.MonoCMethod.DoInvoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) [0x0007a] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:652
2018-10-14 09:59:36.681 EFCoreTest.iOS[337:13033] critical:   at System.Reflection.MonoCMethod.Invoke (System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:680
2018-10-14 09:59:36.681 EFCoreTest.iOS[337:13033] critical:   at System.Reflection.ConstructorInfo.Invoke (object[]) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/ConstructorInfo.cs:62
2018-10-14 09:59:36.685 EFCoreTest.iOS[337:13033] critical:   at System.Linq.Expressions.Interpreter.NewInstruction.Run (System.Linq.Expressions.Interpreter.InterpretedFrame) [0x00017] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/NewInstruction.cs:35
2018-10-14 09:59:36.685 EFCoreTest.iOS[337:13033] critical:   at System.Linq.Expressions.Interpreter.Interpreter.Run (System.Linq.Expressions.Interpreter.InterpretedFrame) [0x00015] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/Interpreter.cs:63
2018-10-14 09:59:36.685 EFCoreTest.iOS[337:13033] critical:   at System.Linq.Expressions.Interpreter.LightLambda.Run1<T0_REF, TRet_REF> (T0_REF) [0x0001c] in <41fdc0bc3c7345aebac34baf698c1a1e#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.685 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry/OriginalValues..ctor (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry) [0x00012] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.685 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.EnsureOriginalValues () [0x0000f] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.686 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntrySubscriber.SnapshotAndSubscribe (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry) [0x00010] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.686 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.StartTracking (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry) [0x0009b] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.686 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetEntityState (Microsoft.EntityFrameworkCore.EntityState,Microsoft.EntityFrameworkCore.EntityState,bool) [0x00161] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.686 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetEntityState (Microsoft.EntityFrameworkCore.EntityState,bool,System.Nullable`1<Microsoft.EntityFrameworkCore.EntityState>) [0x00038] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.687 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityGraphAttacher.PaintAction (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntryGraphNode,bool) [0x0003f] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.687 EFCoreTest.iOS[337:13033] critical:   at (wrapper unknown) object.gsharedvt_out () <0x000db>
2018-10-14 09:59:36.687 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityEntryGraphIterator.TraverseGraph<TState_GSHAREDVT> (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntryGraphNode,TState_GSHAREDVT,System.Func`3<Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntryGraphNode, TState_GSHAREDVT, bool>) [0x00003] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.687 EFCoreTest.iOS[337:13033] critical:   at (wrapper unknown) object.gsharedvt_in () <0x000db>
2018-10-14 09:59:36.687 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityGraphAttacher.AttachGraph (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry,Microsoft.EntityFrameworkCore.EntityState,bool) [0x00028] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.688 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.DbContext.SetEntityState (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry,Microsoft.EntityFrameworkCore.EntityState) [0x00016] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.688 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.DbContext.SetEntityState<TEntity_REF> (TEntity_REF,Microsoft.EntityFrameworkCore.EntityState) [0x0000f] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.688 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.DbContext.Add<TEntity_REF> (TEntity_REF) [0x00012] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.688 EFCoreTest.iOS[337:13033] critical:   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1<TEntity_REF>.Add (TEntity_REF) [0x00000] in <9b2250d1fb7644b98af1ab5ed79e762f#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.688 EFCoreTest.iOS[337:13033] critical:   at EFCoreTest.MainPage/<Test>d__2.MoveNext () [0x00110] in /Users/gagik/Downloads/EFCoreTest/EFCoreTest/MainPage.xaml.cs:40
2018-10-14 09:59:36.689 EFCoreTest.iOS[337:13033] critical:   at System.Runtime.CompilerServices.AsyncVoidMethodBuilder.Start<TStateMachine_REF> (TStateMachine_REF&) [0x0002c] in <7d5a05cfcb09432d8cc656b9d781e54b#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.689 EFCoreTest.iOS[337:13033] critical:   at EFCoreTest.MainPage.Test () [0x0002a] in <3deb7a24ad65446fa9b18ee64ba6d37b#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.689 EFCoreTest.iOS[337:13033] critical:   at EFCoreTest.MainPage.OnAppearing () [0x00008] in /Users/gagik/Downloads/EFCoreTest/EFCoreTest/MainPage.xaml.cs:24
2018-10-14 09:59:36.691 EFCoreTest.iOS[337:13033] critical:   at Xamarin.Forms.Page.SendAppearing () [0x00024] in D:\a\1\s\Xamarin.Forms.Core\Page.cs:316
2018-10-14 09:59:36.691 EFCoreTest.iOS[337:13033] critical:   at Xamarin.Forms.Platform.iOS.PageRenderer.ViewDidAppear (bool) [0x00025] in <02d849b2e21741169c7b5bbc798a23d0#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.691 EFCoreTest.iOS[337:13033] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) [0x0001e] in <7d5a05cfcb09432d8cc656b9d781e54b#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.691 EFCoreTest.iOS[337:13033] critical:   at <unknown> <0xffffffff>
2018-10-14 09:59:36.692 EFCoreTest.iOS[337:13033] critical:   at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0x00007>
2018-10-14 09:59:36.693 EFCoreTest.iOS[337:13033] critical:   at UIKit.UIApplication.Main (string[],intptr,intptr) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/UIKit/UIApplication.cs:79
2018-10-14 09:59:36.693 EFCoreTest.iOS[337:13033] critical:   at UIKit.UIApplication.Main (string[],string,string) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/UIKit/UIApplication.cs:63
2018-10-14 09:59:36.693 EFCoreTest.iOS[337:13033] critical:   at EFCoreTest.iOS.Application.Main (string[]) [0x00001] in /Users/gagik/Downloads/EFCoreTest/EFCoreTest.iOS/Main.cs:17
2018-10-14 09:59:36.693 EFCoreTest.iOS[337:13033] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) [0x0001e] in <7d5a05cfcb09432d8cc656b9d781e54b#D5284A72-BBAF-2A6A-D43B-BF5066397725>:0
2018-10-14 09:59:36.693 EFCoreTest.iOS[337:13033] critical:

Expected Behavior

dbContext.JobSetups.Add(js); should successfully add the item into the DB context

Actual Behavior

dbContext.JobSetups.Add(js); throws an exception

Environment

=== Visual Studio Community 2017 for Mac ===

Version 7.6.9 (build 22)
Installation UUID: 21f35cb0-ffca-4f2b-b96d-fc41cb3325af
Runtime:
    Mono 5.12.0.309 (2018-02/39d89a335c8) (64-bit)
    GTK+ 2.24.23 (Raleigh theme)
    Xamarin.Mac 4.4.1.178 (master / eeaeb7e6)

    Package version: 512000309

=== NuGet ===

Version: 4.3.1.4445

=== .NET Core ===

Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
    2.1.2
    2.1.1
    2.0.5
SDK: /usr/local/share/dotnet/sdk/2.1.302/Sdks
SDK Versions:
    2.1.302
    2.1.301
    2.1.4
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.12.0/lib/mono/msbuild/15.0/bin/Sdks

=== Xamarin.Profiler ===

Version: 1.6.3
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Apple Developer Tools ===

Xcode 10.0 (14320.25)
Build 10A255

=== Xamarin.Android ===

Version: 9.0.0.20 (Visual Studio Community)
Android SDK: /Users/gagik/Library/Developer/Xamarin/android-sdk-macosx
    Supported Android versions:
        6.0 (API level 23)
        7.0 (API level 24)
        7.1 (API level 25)
        8.0 (API level 26)
        8.1 (API level 27)

SDK Tools Version: 26.1.1
SDK Platform Tools Version: 27.0.1
SDK Build Tools Version: 28.0.0

Java SDK: /usr
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

=== Xamarin Inspector ===

Version: 1.4.3
Hash: db27525
Branch: 1.4-release
Build date: Mon, 09 Jul 2018 21:20:18 GMT
Client compatibility: 1

=== Xamarin.Mac ===

Version: 5.0.0.0 (Visual Studio Community)
Hash: b40230c0
Branch: 
Build date: 2018-09-27 11:41:37-0400

=== Xamarin.iOS ===

Version: 12.0.0.15 (Visual Studio Community)
Hash: 84552a46
Branch: xcode10
Build date: 2018-09-17 21:54:33-0400

=== Build Information ===

Release ID: 706090022
Git revision: 0a0ba3c4593e9adb1c6ff6324e641036146af376
Build date: 2018-10-05 16:38:51+00
Build branch: release-7.6
Xamarin extensions: f7856b13f2c03a58e08381d3a5970bba18f5c7d7

=== Operating System ===

Mac OS X 10.14.0
Darwin 18.0.0 Darwin Kernel Version 18.0.0
    Wed Aug 22 20:13:40 PDT 2018
    root:xnu-4903.201.2~1/RELEASE_X86_64 x86_64

=== Enabled user installed extensions ===

NuGet Package Explorer 0.2
NuGet Package Management Extensions 0.12.6
Straight8's SpecFlow Intergration 1.11.0.0
Internet of Things (IoT) development (Preview) 7.5

Build Logs


https://gist.github.com/kyurkchyan/37c377f8a0545837ebd9fe7d3311ade4

Example Project (If Possible)


EFCoreTest 2.zip

bug iOS
Source
picture kyurkchyan

All 16 comments

Thanks for the test case. I can reproduce the issue. It appears to be a limit (or a bug) in the AOT compiler. I'll move the issue to the mono runtime team for investigation/fix.

spouliot picture spouliot on 15 Oct 2018
👍1

https://github-issue-mover.appspot.com seems down right now.
c.c. @vargaz until it's moved

spouliot picture spouliot on 15 Oct 2018

Hey @spouliot appreciate quick response! Good that we found an issue :) Are there any plans for the fix? Cause this is a major issue for us right now and makes our app completely unusable on iOS devices.

kyurkchyan picture kyurkchyan on 16 Oct 2018

@kyurkchyan the fix will need some time to be tested/backported to a mono that will be released inside XI. A possible workaround would be to use a class (not a struct) to minimize the nullable fields (you're going over an AOT limit), e.g. by using a string.

spouliot picture spouliot on 18 Oct 2018

In this case, the workaround is to use non-nullable fields as much as possible.

vargaz picture vargaz on 18 Oct 2018

Reopen until the fix is in xamarin.ios.

vargaz picture vargaz on 19 Oct 2018

@vargaz @spouliot Thanks for quick responses. This same issue is present even without nullable fields. I was able to reproduce this same issue with this class

public class ConversionFactors : BaseEntity
{

    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid ID { get; set; }

    public double Dollyload { get; set; }
    public double Tallyload { get; set; }
    public double Trailerload { get; set; }
    public double HundredWeight { get; set; }
    public double Pallet { get; set; }
    public double Piece { get; set; }
    public double Rack { get; set; }
    public double Vault { get; set; }
    public double SquareFoot { get; set; }
}

The interesting thing is as soon as I make the SquareFoot nullable everything works fine for this class. The sample that I posted was an optimistic workaround I tried after discovering that making a nullable field fixes the issue. However, it didn't for that big class. The original JobSetup class doesn't have any nullable fields.

kyurkchyan picture kyurkchyan on 19 Oct 2018

Is the error message the same with the class above ?

vargaz picture vargaz on 19 Oct 2018

So,

When using the JobSetup class I get an exception which I've already put into the initial comment - buffer_offset <= 256

With ConversionFactors I get the following exception

2018-10-19 18:49:18.729 EFCoreTest.iOS[1684:173302] error: * Assertion: should not be reached at ../../../../../mono/mini/mini-arm64-gsharedvt.c:121
2018-10-19 18:49:18.729 EFCoreTest.iOS[1684:173302] critical: Stacktrace:

2018-10-19 18:49:18.729 EFCoreTest.iOS[1684:173302] critical:   at <unknown> <0xffffffff>
2018-10-19 18:49:18.730 EFCoreTest.iOS[1684:173302] critical:   at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&) <0x00007>
2018-10-19 18:49:18.730 EFCoreTest.iOS[1684:173302] critical:   at System.Reflection.MonoCMethod.InternalInvoke (object,object[]) [0x00002] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:661
2018-10-19 18:49:18.730 EFCoreTest.iOS[1684:173302] critical:   at System.Reflection.MonoCMethod.DoInvoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) [0x0007a] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:652
2018-10-19 18:49:18.731 EFCoreTest.iOS[1684:173302] critical:   at System.Reflection.MonoCMethod.Invoke (System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:680
2018-10-19 18:49:18.731 EFCoreTest.iOS[1684:173302] critical:   at System.Reflection.ConstructorInfo.Invoke (object[]) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/ConstructorInfo.cs:62
2018-10-19 18:49:18.731 EFCoreTest.iOS[1684:173302] critical:   at System.Linq.Expressions.Interpreter.NewInstruction.Run (System.Linq.Expressions.Interpreter.InterpretedFrame) [0x00017] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/NewInstruction.cs:35
2018-10-19 18:49:18.732 EFCoreTest.iOS[1684:173302] critical:   at System.Linq.Expressions.Interpreter.Interpreter.Run (System.Linq.Expressions.Interpreter.InterpretedFrame) [0x00015] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/Interpreter.cs:63
2018-10-19 18:49:18.732 EFCoreTest.iOS[1684:173302] critical:   at System.Linq.Expressions.Interpreter.LightLambda.Run1<T0_REF, TRet_REF> (T0_REF) [0x0001c] in <41fdc0bc3c7345aebac34baf698c1a1e#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.732 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry/OriginalValues..ctor (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry) [0x00012] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.733 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.EnsureOriginalValues () [0x0000f] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.733 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntrySubscriber.SnapshotAndSubscribe (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry) [0x00010] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.733 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.StartTracking (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry) [0x0009b] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.734 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetEntityState (Microsoft.EntityFrameworkCore.EntityState,Microsoft.EntityFrameworkCore.EntityState,bool) [0x00161] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.734 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetEntityState (Microsoft.EntityFrameworkCore.EntityState,bool,System.Nullable`1<Microsoft.EntityFrameworkCore.EntityState>) [0x00038] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.734 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityGraphAttacher.PaintAction (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntryGraphNode,bool) [0x0003f] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.735 EFCoreTest.iOS[1684:173302] critical:   at (wrapper unknown) object.gsharedvt_out () <0x000db>
2018-10-19 18:49:18.735 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityEntryGraphIterator.TraverseGraph<TState_GSHAREDVT> (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntryGraphNode,TState_GSHAREDVT,System.Func`3<Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntryGraphNode, TState_GSHAREDVT, bool>) [0x00003] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.735 EFCoreTest.iOS[1684:173302] critical:   at (wrapper unknown) object.gsharedvt_in () <0x000db>
2018-10-19 18:49:18.736 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.EntityGraphAttacher.AttachGraph (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry,Microsoft.EntityFrameworkCore.EntityState,bool) [0x00028] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.736 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.DbContext.SetEntityState (Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry,Microsoft.EntityFrameworkCore.EntityState) [0x00016] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.736 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.DbContext.SetEntityState<TEntity_REF> (TEntity_REF,Microsoft.EntityFrameworkCore.EntityState) [0x0000f] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.737 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.DbContext.Add<TEntity_REF> (TEntity_REF) [0x00012] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.737 EFCoreTest.iOS[1684:173302] critical:   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1<TEntity_REF>.Add (TEntity_REF) [0x00000] in <9b2250d1fb7644b98af1ab5ed79e762f#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.737 EFCoreTest.iOS[1684:173302] critical:   at EFCoreTest.MainPage/<Test>d__2.MoveNext () [0x0011a] in /Users/gagik/Downloads/EFCoreTest/EFCoreTest/MainPage.xaml.cs:54
2018-10-19 18:49:18.738 EFCoreTest.iOS[1684:173302] critical:   at System.Runtime.CompilerServices.AsyncVoidMethodBuilder.Start<TStateMachine_REF> (TStateMachine_REF&) [0x0002c] in <7d5a05cfcb09432d8cc656b9d781e54b#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.738 EFCoreTest.iOS[1684:173302] critical:   at EFCoreTest.MainPage.Test () [0x0002a] in <b5cfcdbba2a647b5a86a76d9231c4738#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.738 EFCoreTest.iOS[1684:173302] critical:   at EFCoreTest.MainPage.OnAppearing () [0x00008] in /Users/gagik/Downloads/EFCoreTest/EFCoreTest/MainPage.xaml.cs:25
2018-10-19 18:49:18.738 EFCoreTest.iOS[1684:173302] critical:   at Xamarin.Forms.Page.SendAppearing () [0x00024] in D:\a\1\s\Xamarin.Forms.Core\Page.cs:316
2018-10-19 18:49:18.739 EFCoreTest.iOS[1684:173302] critical:   at Xamarin.Forms.Platform.iOS.PageRenderer.ViewDidAppear (bool) [0x00025] in <02d849b2e21741169c7b5bbc798a23d0#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.739 EFCoreTest.iOS[1684:173302] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) [0x0001e] in <7d5a05cfcb09432d8cc656b9d781e54b#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.739 EFCoreTest.iOS[1684:173302] critical:   at <unknown> <0xffffffff>
2018-10-19 18:49:18.740 EFCoreTest.iOS[1684:173302] critical:   at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0x00007>
2018-10-19 18:49:18.740 EFCoreTest.iOS[1684:173302] critical:   at UIKit.UIApplication.Main (string[],intptr,intptr) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/UIKit/UIApplication.cs:79
2018-10-19 18:49:18.740 EFCoreTest.iOS[1684:173302] critical:   at UIKit.UIApplication.Main (string[],string,string) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/UIKit/UIApplication.cs:63
2018-10-19 18:49:18.740 EFCoreTest.iOS[1684:173302] critical:   at EFCoreTest.iOS.Application.Main (string[]) [0x00001] in /Users/gagik/Downloads/EFCoreTest/EFCoreTest.iOS/Main.cs:17
2018-10-19 18:49:18.741 EFCoreTest.iOS[1684:173302] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) [0x0001e] in <7d5a05cfcb09432d8cc656b9d781e54b#C0372FF3-2C91-4528-9C22-44601B8C73B4>:0
2018-10-19 18:49:18.741 EFCoreTest.iOS[1684:173302] critical: 
Native stacktrace:

As you can see this is a different type of exception. As soon as I remove the last property SquareFoot or make it nullable the ConversionFactors works just fine. I can assume that the last property is the verge of the threshold.
Another observation, If I make all of the properties of JobSetup non-nullable I will get the same type of exception as with ConversionFactors stack trace above.

I can assume we have 2 distinct exceptions

  1. One which happens with a lot of non-nullable properties.
  2. And the one which happens with lot of nullable properties.

Correct me if I'm wrong.

kyurkchyan picture kyurkchyan on 19 Oct 2018

So thats a different bug, will look into that too.

vargaz picture vargaz on 19 Oct 2018
👍1

This keeps getting closed by other PR :(
but in this case the bump was merged (to master) so I'm not re-opening (just noting)

spouliot picture spouliot on 26 Oct 2018

@spouliot is there a way for me to track when will this get released?

kyurkchyan picture kyurkchyan on 5 Nov 2018

@kyurkchyan this fix will be included in our d16-0 release, which is scheduled for some time next year (probably late March/early April).

rolfbjarne picture rolfbjarne on 6 Nov 2018

@rolfbjarne this is a very serious issue for us, we basically can't ship EF core based app. Do you think there's a workaround for this? Otherwise we will have to spend a lot of time and resources to move the current code from EF core to something else.

kyurkchyan picture kyurkchyan on 8 Nov 2018

@kyurkchyan so the second issue you reported (https://github.com/xamarin/xamarin-macios/issues/4984#issuecomment-431385132) is not yet fixed. I've opened https://github.com/mono/mono/issues/11613 to track this issue (otherwise we'll most likely lose track of it).

Unfortunately there are no official preview releases with this fix yet (first one is planned for early December), but you can try a package from our master branch if you wish (go here: https://github.com/xamarin/xamarin-macios/commits/master, click on the green checkmark for one of the top commits, and download the xamarin.ios*.pkg that shows up).

Also I don't know any workaround except tweaking the fields of your classes until the crashes go away :/ Avoid many nullable fields (which is the first bug), but there's obviously a second issue as well which is not related to nullable fields (and since it's not fixed we don't know yet what's causing it).

rolfbjarne picture rolfbjarne on 8 Nov 2018

@rolfbjarne thanks for the suggestions. Unfortunately the package didn't solve the issue. :( I'll have to find workarounds or switch EfCore to something else at all.

kyurkchyan picture kyurkchyan on 15 Nov 2018
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