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.NET/iOS: crash on device #10726

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rolfbjarne opened this issue Feb 25, 2021 · 5 comments
Closed

.NET/iOS: crash on device #10726

rolfbjarne opened this issue Feb 25, 2021 · 5 comments
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bug If an issue is a bug or a pull request a bug fix dotnet-external-dependency .NET: this issue/pull request is blocked on external work dotnet-pri0 .NET 6: required for stable release iOS Issues affecting iOS
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.NET 6

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@rolfbjarne
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Steps to Reproduce

cd tests/dotnet/MySingleView
dotnet build -t:Run /p:RuntimeIdentifier=ios-arm64

Expected Behavior

Successful launch

Actual Behavior

[...]
Launched application 'com.xamarin.mysingletitle' on 'Rolf's iPhone 11' with pid 6124
Press enter to terminate the application
>2021-02-25 14:55:59.711 MySingleView[6124:6566440] Xamarin.iOS: IDE Port: 10000 Transport: USB
2021-02-25 14:56:01.701 MySingleView[6124:6566403] Xamarin.iOS: Debugger not loaded (timed out while trying to connect to the IDE).
2021-02-25 14:56:01.716 MySingleView[6124:6566440] Xamarin.iOS: Listened for connections from the IDE for 2 seconds, nobody connected.
2021-02-25 14:56:01.741 MySingleView[6124:6566403] Unhandled managed exception: TypeInitialization_Type, System.Collections.Generic.NonRandomizedStringEqualityComparer (System.TypeInitializationException)
 --- inner exception ---
Linked away (System.NotSupportedException)

=================================================================
	Native Crash Reporting
=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================

=================================================================
	Native stacktrace:
=================================================================
	0x10564b350 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_dump_native_crash_info
	0x105635094 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_handle_native_crash
	0x10564a720 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : sigabrt_signal_handler
	0x19ae61414 - /usr/lib/system/libsystem_platform.dylib : <redacted>
	0x19ae64948 - /usr/lib/system/libsystem_pthread.dylib : pthread_kill
	0x19adf3ba4 - /usr/lib/system/libsystem_c.dylib : abort
	0x1054a6ed0 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : xamarin_printf
	0x1054f6424 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_invoke_unhandled_exception_hook
	0x105634a9c - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_handle_exception_internal
	0x105633354 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_handle_exception
	0x105648b4c - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_arm_throw_exception
	0x10545ebfc - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : rethrow_preserve_exception
	0x10529e454 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : System_Collections_Generic_Dictionary_2_TKey_REF_TValue_REF__ctor_int
	0x10504e548 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : System_AppContext_Setup_char___char___int
	0x10540ad90 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
	0x1056165bc - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_jit_runtime_invoke
	0x10553e464 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_runtime_invoke_checked
	0x1054d0e8c - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_runtime_install_appctx_properties
	0x1054d03b8 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_runtime_init_checked
	0x105615cf0 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mini_init
	0x10561f168 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : mono_jit_init_version
	0x1054b7a5c - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : xamarin_main
	0x1056931b0 - /private/var/containers/Bundle/Application/11B8F971-2D82-4A06-BAF0-2850CBE1EC32/PublicStaging.app/MySingleView : main
	0x19af4f384 - /usr/lib/system/libdyld.dylib : <redacted>

=================================================================
	Basic Fault Address Reporting
=================================================================
Memory around native instruction pointer (0x19af44df0):0x19af44de0  c0 03 5f d6 c0 03 5f d6 10 29 80 d2 01 10 00 d4  .._..._..)......
0x19af44df0  e3 00 00 54 fd 7b bf a9 fd 03 00 91 bb 78 ff 97  ...T.{.......x..
0x19af44e00  bf 03 00 91 fd 7b c1 a8 c0 03 5f d6 c0 03 5f d6  .....{...._..._.
0x19af44e10  90 29 80 d2 01 10 00 d4 e3 00 00 54 fd 7b bf a9  .).........T.{..

=================================================================
	Managed Stacktrace:
=================================================================
=================================================================
Xamarin.Hosting: Process '6124' exited.
Application 'com.xamarin.mysingletitle' terminated.

This is with 861df21.
@rolfbjarne rolfbjarne added bug If an issue is a bug or a pull request a bug fix iOS Issues affecting iOS dotnet-pri0 .NET 6: required for stable release labels Feb 25, 2021
@rolfbjarne rolfbjarne added this to the .NET 6 milestone Feb 25, 2021
@spouliot
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Linked away (System.NotSupportedException)

Interesting. That's mostly AppDomain / remoting / CAS code - most of it should not even be in dotnet BCL.

I can have a look next week. Also using mtouch --nolinkaway should turn it off.

@rolfbjarne
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We're not linking away anything in .NET anymore, so this isn't our code.

It seems it's System.RuntimeType.UnderlyingSystemType that was linked away:

// from the linked System.Private.CoreLib.dll
.method public virtual hidebysig specialname 
    instance default class System.Type get_UnderlyingSystemType ()  cil managed noinlining 
{
	// Method begins at RVA 0x51cc
	// Code size 11 (0xb)
	.maxstack 8
	IL_0000:  ldstr "Linked away"
	IL_0005:  newobj instance void class System.NotSupportedException::'.ctor'(string)
	IL_000a:  throw 
} // end of method RuntimeType::get_UnderlyingSystemType

it also happens very early (as a result of calling mono_jit_init_version):

(lldb) bt
* thread #1, name = 'tid_407', queue = 'com.apple.main-thread', stop reason = breakpoint 1.22
  * frame #0: 0x000000010321a9f0 MySingleView`throw_exception
    frame #1: 0x0000000102de7754 MySingleView`System_RuntimeType_get_UnderlyingSystemType + 148
    frame #2: 0x0000000102e0307c MySingleView`System_Type_IsAssignableFrom_System_Type + 396
    frame #3: 0x0000000103058174 MySingleView`System_Collections_Generic_EqualityComparer_1_T_REF_CreateComparer + 484
    frame #4: 0x0000000103057e6c MySingleView`System_Collections_Generic_EqualityComparer_1_T_REF_get_Default + 236
    frame #5: 0x000000010306b918 MySingleView`System_Collections_Generic_NonRandomizedStringEqualityComparer__cctor + 120
    frame #6: 0x00000001031c6d90 MySingleView`wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 560
    frame #7: 0x00000001033d25bc MySingleView`mono_jit_runtime_invoke(method=<unavailable>, obj=<unavailable>, params=<unavailable>, exc=<unavailable>, error=0x000000016d0d6780) at mini-runtime.c:3383:3 [opt]
    frame #8: 0x00000001032fbdf0 MySingleView`mono_runtime_try_invoke [inlined] do_runtime_invoke(method=0x0000000105818078, obj=0x0000000000000000, params=0x0000000000000000, exc=0x000000016d0d6188, error=0x000000016d0d6780) at object.c:2472:11 [opt]
    frame #9: 0x00000001032fbdb4 MySingleView`mono_runtime_try_invoke(method=0x0000000105818078, obj=0x0000000000000000, params=0x0000000000000000, exc=0x000000016d0d6188, error=0x000000016d0d6780) at object.c:2581 [opt]
    frame #10: 0x00000001032faa54 MySingleView`mono_runtime_class_init_full(vtable=0x000000010401e3b8, error=0x000000016d0d6780) at object.c:552:3 [opt]
    frame #11: 0x00000001033cd1ec MySingleView`mono_resolve_patch_target(method=0x0000000105817750, domain=0x0000000103e05930, code=", patch_info=0x0000000105814878, run_cctors=1, error=0x000000016d0d6780) at mini-runtime.c:1526:10 [opt]
    frame #12: 0x00000001033e3798 MySingleView`init_method(amodule=0x000000010401f200, info=<unavailable>, method_index=<unavailable>, method=<unavailable>, init_class=0x0000000000000000, error=0x000000016d0d6780) at aot-runtime.c:4845:12 [opt]
    frame #13: 0x00000001033e4730 MySingleView`load_method(domain=0x0000000103e05930, amodule=0x000000010401f200, image=0x000000010401ea00, method=0x0000000105817750, token=100668525, method_index=5228, error=0x000000016d0d6780) at aot-runtime.c:4437:10 [opt]
    frame #14: 0x00000001033e4090 MySingleView`mono_aot_get_method(domain=0x0000000103e05930, method=0x0000000105817750, error=0x000000016d0d6780) at aot-runtime.c:5137:19 [opt]
    frame #15: 0x00000001033cda44 MySingleView`mono_jit_compile_method_with_opt(method=0x0000000281624b40, opt=<unavailable>, jit_only=0, error=0x000000016d0d6780) at mini-runtime.c:2612:10 [opt]
    frame #16: 0x00000001033f3634 MySingleView`common_call_trampoline(regs=0x000000016d0d6810, code="?\x13@, m=0x0000000281624b40, vt=0x0000000000000000, vtable_slot=<unavailable>, error=0x000000016d0d6780) at mini-trampolines.c:636:27 [opt]
    frame #17: 0x00000001033f311c MySingleView`mono_magic_trampoline(regs=0x000000016d0d6810, code="?\x13@, arg=0x0000000281624ae0, tramp=<unavailable>) at mini-trampolines.c:774:8 [opt]
    frame #18: 0x0000000103219e2c MySingleView`generic_trampoline_jit + 252
    frame #19: 0x000000010305a454 MySingleView`System_Collections_Generic_Dictionary_2_TKey_REF_TValue_REF__ctor_int + 132
    frame #20: 0x0000000102e0a548 MySingleView`System_AppContext_Setup_char___char___int + 168
    frame #21: 0x00000001031c6d90 MySingleView`wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 560
    frame #22: 0x00000001033d25bc MySingleView`mono_jit_runtime_invoke(method=<unavailable>, obj=<unavailable>, params=<unavailable>, exc=<unavailable>, error=0x000000016d0d6e30) at mini-runtime.c:3383:3 [opt]
    frame #23: 0x00000001032fa464 MySingleView`mono_runtime_invoke_checked [inlined] do_runtime_invoke(method=0x0000000105813dd0, obj=0x0000000000000000, params=0x000000016d0d6e80, exc=<unavailable>, error=0x000000016d0d6e30) at object.c:2472:11 [opt]
    frame #24: 0x00000001032fa428 MySingleView`mono_runtime_invoke_checked(method=0x0000000105813dd0, obj=0x0000000000000000, params=0x000000016d0d6e80, error=0x000000016d0d6e30) at object.c:2640 [opt]
    frame #25: 0x000000010328ce8c MySingleView`mono_runtime_install_appctx_properties at appdomain.c:1350:2 [opt]
    frame #26: 0x000000010328c3b8 MySingleView`mono_runtime_init_checked(domain=0x0000000103e05930, start_cb=<unavailable>, attach_cb=<unavailable>, error=0x000000016d0d70a8) at appdomain.c:322:3 [opt]
    frame #27: 0x00000001033d1cf0 MySingleView`mini_init(filename=<unavailable>, runtime_version=<unavailable>) at mini-runtime.c:4550:2 [opt]
    frame #28: 0x00000001033db168 MySingleView`mono_jit_init_version(domain_name=<unavailable>, runtime_version=<unavailable>) at driver.c:2851:20 [opt]
    frame #29: 0x0000000103273a5c MySingleView`xamarin_main(argc=1, argv=0x000000016d0d7b20, launch_mode=XamarinLaunchModeApp) at monotouch-main.m:431:2
    frame #30: 0x000000010344f1b0 MySingleView`main(argc=1, argv=0x000000016d0d7b20) at main.arm64.mm:63:11
    frame #31: 0x000000019af4f384 libdyld.dylib`start + 4

@marek-safar
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This should be fixed with dotnet/runtime#48710

@rolfbjarne
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This should be fixed with dotnet/runtime#48710

Looks like that would do it; now we'll just have to wait for updated .NET builds to test it (the fix is 2 days old, and the latest .NET build (6.0.100-preview.3.21123.4) is 3 days old).

@rolfbjarne rolfbjarne added the dotnet-external-dependency .NET: this issue/pull request is blocked on external work label Feb 26, 2021
@spouliot spouliot mentioned this issue Mar 30, 2021
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@spouliot
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spouliot commented Apr 6, 2021

the startup crashes (this one and the AOT one) are fixed with 6.0.100-preview.3.21202.5

@spouliot spouliot closed this as completed Apr 6, 2021
@ghost ghost locked as resolved and limited conversation to collaborators Apr 28, 2022
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bug If an issue is a bug or a pull request a bug fix dotnet-external-dependency .NET: this issue/pull request is blocked on external work dotnet-pri0 .NET 6: required for stable release iOS Issues affecting iOS
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