Crash on iOS15 Beta 5

Thread 6:
0   libsystem_pthread.dylib       	0x00000001db8f2a9c 0x1db8f2000 + 2716

Thread 7:
0   libsystem_pthread.dylib       	0x00000001db8f2a9c 0x1db8f2000 + 2716

Thread 8:
0   libsystem_pthread.dylib       	0x00000001db8f2a9c 0x1db8f2000 + 2716


Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x0000000000000000   x3: 0x0000000000000000
    x4: 0x0000000000000000   x5: 0x0000000000989680   x6: 0x0000000000001c00   x7: 0x0000000000000000
    x8: 0x0000000104360580   x9: 0x3cc25e695a373c4b  x10: 0x00000000000003e8  x11: 0x0000000000000000
   x12: 0x00000002834b8200  x13: 0x000000010488b82b  x14: 0x0000000000000020  x15: 0x0000000080000000
   x16: 0x0000000000000148  x17: 0x0000000181addc4c  x18: 0x0000000000000000  x19: 0x0000000000000006
   x20: 0x0000000000000103  x21: 0x0000000104360660  x22: 0x0000000000000000  x23: 0x0000000122822000
   x24: 0x000000010488b828  x25: 0x000000016d89b7f0  x26: 0x0000000000000002  x27: 0x0000000103fce930
   x28: 0x0000000000ffffff   fp: 0x000000016d89a9b0   lr: 0x00000001db8fe8d8
    sp: 0x000000016d89a990   pc: 0x00000001bb457a60 cpsr: 0x40000000
   esr: 0x56000080  Address size fault


Binary Images:
0x102560000 - 0x103e9ffff XXXXXXX.iOS arm64  <9e34962dad9f3a4d915464e9b58696bf> /private/var/containers/Bundle/Application/9CF84154-0C87-49C4-85E9-1D495D323ED9/XXXXXXX.iOS.app/XXXXXXX.iOS
0x104300000 - 0x104353fff dyld arm64  <cc0622646dac3bceb17ade758ec95e79> /usr/lib/dyld
0x181abb000 - 0x181ef4fff CoreFoundation arm64  <908c804ab43c366e8c4f955f2d723734> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x1831fe000 - 0x1834dcfff Foundation arm64  <e9fd4d9355ff39b8b325920378b4eb7f> /System/Library/Frameworks/Foundation.framework/Foundation
0x183e1c000 - 0x185593fff UIKitCore arm64  <1cc130419dcf35f2b10664f71d764a44> /System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore
0x18c4b6000 - 0x18c530fff libsystem_c.dylib arm64  <8955052000aa3defaf18cacfb087ef2e> /usr/lib/system/libsystem_c.dylib
0x199200000 - 0x199235fff libobjc.A.dylib arm64  <135c6774c9b43be58f39dc072e83c31b> /usr/lib/libobjc.A.dylib
0x1992f7000 - 0x19930ffff libc++abi.dylib arm64  <6962e59d3f1332d1a0677dc50ef390c8> /usr/lib/libc++abi.dylib
0x1bb451000 - 0x1bb482fff libsystem_kernel.dylib arm64  <dc4963921c143e6e97c1d9d449de8e84> /usr/lib/system/libsystem_kernel.dylib
0x1db8f2000 - 0x1db901fff libsystem_pthread.dylib arm64  <c916740f7fb83c72871f71229e61fb7b> /usr/lib/system/libsystem_pthread.dylib

EOF

I started seeing the exact same thing on Beta 5

We have exactly the same story with our Xamarin iOS app. It started to crash on iOS15 Beta5. The reason for a crash has not been identified yet.

You can deobfuscate your stack trace by following these steps:

Get the first number from the crash file in the Binary Images section: in your case (0x102560000)

Go to directory that contains *.dSYM in out case it is bin/iPhone/release/

And run in terminal

atos -arch arm64  -o YourAppName.app/YourAppName -l 0x102560000 0x1035088e8

or copy all addresses into stack.txt file and run

atos -arch arm64  -o YourAppName.app/YourAppName -l 0x102560000 -f stack.txt

Out stack trace:

wrapper_managed_to_native_Foundation_NSObject_xamarin_set_gchandle_with_flags_safe_intptr_intptr_Foundation_NSObject_XamarinGCHandleFlags (in {AppName}) + 136
Foundation_NSObject_CreateManagedRef_bool (in {AppName}) (NSObject2.cs:286)
Foundation_NSObject_InitializeObject_bool (in {AppName}) (NSObject2.cs:273)
Foundation_NSObject__ctor_Foundation_NSObjectFlag (in {AppName}) (NSObject2.cs:148)
UIKit_UIApplicationDelegate__ctor (in {AppName}) (UIApplicationDelegate.g.cs:883)
MvvmCross_Platforms_Ios_Core_MvxApplicationDelegate__ctor (in {AppName}) (MvxApplicationDelegate.cs:22)
MvvmCross_Platforms_Ios_Core_MvxApplicationDelegate_2_TMvxIosSetup_REF_TApplication_REF__ctor (in {AppName}) + 20
{AppName}_AppDelegate__ctor (in {AppName}) (/<unknown>:1)
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr (in {AppName}) + 272
mono_jit_runtime_invoke (in {AppName}) (mini-runtime.c:3171)
mono_runtime_invoke_checked (in {AppName}) (object.c:3220)
mono_runtime_invoke (in {AppName}) (object.c:3107)
native_to_managed_trampoline_1(objc_object, objc_selector, _MonoMethod*, bool, unsigned int) (in {AppName}) (registrar.m:32)
-[AppDelegate init] (in {AppName}) (registrar.m:9828)
0x000000018370b498
wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr (in {AppName}) + 344
UIKit_UIApplication_Main_string___intptr_intptr (in {AppName}) (UIApplication.cs:86)
UIKit_UIApplication_Main_string___string_string (in {AppName}) (UIApplication.cs:66)
{AppName}_Application_Main_string__ (in {AppName}) (/<unknown>:1)
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr (in {AppName}) + 272
mono_jit_runtime_invoke (in {AppName}) (mini-runtime.c:3171)
mono_runtime_invoke_checked (in {AppName}) (object.c:3220)
mono_runtime_exec_main_checked (in {AppName}) (object.c:5284)
mono_jit_exec (in {AppName}) (driver.c:1328)
xamarin_main (in {AppName}) (monotouch-main.m:0)
main (in {AppName}) (main.m:184)

iOS 15 Beta 7 already fixed !! Bravo!