Xamarin.forms: [Bug] Xamarin.iOS.CoreAnimation.CATransaction.Commit SIGSEGV
Description
SIGSEV when calling Xamarin.iOS.CoreAnimation.CATransaction.Commit (perhaps when calling Xamarin.Forms.Platform.iOS.CADisplayLinkTicker.StartThread()).
May be a similar race condition to Issue #1755. Unlike the error in Issue #1755, however, my app is not using SkiaSharp.
Complete stack trace below (from App Center Crashes).
Steps to Reproduce
Unknown
Basic Information
- Versions with issue:
- Confirmed in Xamarin.Forms v3.3.0.967583 through v4.0.0.346143-pre9
- May exist in earlier & newer versions, but I have only tested the versions listed above
- Last known good version:
- Unknown
- IDE:
- VS for Mac
- Platform Target Frameworks:
- iOS: 12.0.1, 12.1, 12.1.4, 12.2, 12.3
- Affected Devices:
- iPad Air (Wi-Fi)
- iPad Pro (9.7 inch, Wi-Fi)
- iPhone 6
- iPhone 6s
- iPhone 6s Plus
- iPhone 7 (A1660/A1779/A1780)
- iPhone 7 (A1778)
- iPhone 7 Plus (A1784)
- iPhone 8 Plus (A1897)
- iPhone SE
- iPhone XS Max
Stack Trace
Incident Identifier: 49d446fe-1828-4513-ad4a-0051f6783ec4
CrashReporter Key: 31EE56CB-AF4D-4A02-9FBC-213FF5A541B6
Hardware Model: iPhone7,2
Process: MondayPundayAppi [13447]
Path: /var/containers/Bundle/Application/5A9F0001-B3FA-402D-8091-2C6A7839C086/MondayPundayAppiOS.app/MondayPundayAppiOS
Identifier: com.minnick.mondaypundayapp
Version: 3.7.6 (172)
Code Type: arm64
Parent Process: ??? [1]
Date/Time: undefined
Launch Time: undefined
OS Version: iPhone OS 12.2 (16E227)
Report Version: 104
Exception Type: SIGSEGV
Exception Codes: SEGV_ACCERR at 0x10
Crashed Thread: 20
Thread 20 Crashed:
0 libobjc.A.dylib 0x0000000223097530 objc_msgSend + 16
1 UIKitCore 0x00000002502d4f64 -[UIWindowLayer actionForKey:] + 76
2 QuartzCore 0x000000022833222c -[CALayer layoutSublayers] + 240
3 QuartzCore 0x0000000228337198 CA::Layer::layout_if_needed(CA::Transaction*) + 328
4 QuartzCore 0x000000022829a0a8 CA::Context::commit_transaction(CA::Transaction*) + 344
5 QuartzCore 0x00000002282c8108 CA::Transaction::commit() + 636
6 MondayPundayAppiOS 0x0000000101956448 wrapper_managed_to_native_ObjCRuntime_Messaging_objc_msgSend_intptr_intptr_9 + 100
7 MondayPundayAppiOS 0x000000010198fc20 Xamarin_iOS_CoreAnimation_CATransaction_Commit (CATransaction.g.cs:89)
8 MondayPundayAppiOS 0x00000001024052a8 mono_jit_runtime_invoke (mini-runtime.c:3119)
9 MondayPundayAppiOS 0x00000001024a86c0 mono_runtime_invoke_checked (object.c:2960)
10 MondayPundayAppiOS 0x00000001024adf34 mono_runtime_delegate_try_invoke (object.c:4230)
11 MondayPundayAppiOS 0x00000001024e419c start_wrapper_internal (threads.c:1163)
12 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
13 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
14 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
15 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 0:
0 libsystem_kernel.dylib 0x0000000223a370f4 mach_msg_trap + 8
1 CoreFoundation 0x0000000223e35cb4 __CFRunLoopServiceMachPort + 232
2 CoreFoundation 0x0000000223e30bc4 __CFRunLoopRun + 1356
3 CoreFoundation 0x0000000223e30354 CFRunLoopRunSpecific + 432
4 GraphicsServices 0x000000022603079c GSEventRunModal + 100
5 UIKitCore 0x00000002502a3b68 UIApplicationMain + 208
6 MondayPundayAppiOS 0x0000000101963264 wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr + 320
7 MondayPundayAppiOS 0x00000001019934e8 Xamarin_iOS_UIKit_UIApplication_Main_string___string_string (UIApplication.cs:79)
8 MondayPundayAppiOS 0x00000001024052a8 mono_jit_runtime_invoke (mini-runtime.c:3119)
9 MondayPundayAppiOS 0x00000001024a86c0 mono_runtime_invoke_checked (object.c:2960)
10 MondayPundayAppiOS 0x00000001024ae8c0 mono_runtime_exec_main_checked (object.c:0)
11 MondayPundayAppiOS 0x00000001023e3d2c mono_jit_exec (driver.g.c:1236)
12 MondayPundayAppiOS 0x000000010257774c xamarin_main (monotouch-main.m:484)
13 MondayPundayAppiOS 0x0000000100d4b570 main (main.m:155)
14 libdyld.dylib 0x00000002238f68e0 start + 0
Thread 1:
0 libsystem_kernel.dylib 0x0000000223a42b74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x0000000223ac7cd4 start_wqthread + 0
Thread 2:
0 libsystem_kernel.dylib 0x0000000223a41ee4 __psynch_cvwait + 8
1 libc++.1.dylib 0x0000000223019090 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 20
2 JavaScriptCore 0x000000022b006238 void std::__1::condition_variable_any::wait<std::__1::unique_lock<bmalloc::Mutex> >(std::__1::unique_lock<bmalloc::Mutex>&) + 104
3 JavaScriptCore 0x000000022b00a22c bmalloc::Scavenger::threadRunLoop() + 172
4 JavaScriptCore 0x000000022b0099a4 bmalloc::Scavenger::threadEntryPoint(bmalloc::Scavenger*) + 8
5 JavaScriptCore 0x000000022b00b3e4 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(bmalloc::Scavenger*), bmalloc::Scavenger*> >(void*) + 36
6 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
7 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
8 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 3:
0 libsystem_kernel.dylib 0x0000000223a370f4 mach_msg_trap + 8
1 CoreFoundation 0x0000000223e35cb4 __CFRunLoopServiceMachPort + 232
2 CoreFoundation 0x0000000223e30bc4 __CFRunLoopRun + 1356
3 CoreFoundation 0x0000000223e30354 CFRunLoopRunSpecific + 432
4 WebCore 0x000000022ca8a480 RunWebThread(void*) + 596
5 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
6 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
7 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 4:
0 libsystem_kernel.dylib 0x0000000223a41ee4 __psynch_cvwait + 8
1 MondayPundayAppiOS 0x000000010253cec0 thread_func (mono-os-mutex.h:173)
2 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
3 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
4 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 5:
0 libsystem_kernel.dylib 0x0000000223a37130 semaphore_wait_trap + 8
1 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
2 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
3 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
4 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
5 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 6:
0 libsystem_kernel.dylib 0x0000000223a42b74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x0000000223ac7cd4 start_wqthread + 0
Thread 7:
0 libsystem_kernel.dylib 0x0000000223a42b74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x0000000223ac7cd4 start_wqthread + 0
Thread 8:
0 libsystem_kernel.dylib 0x0000000223a370f4 mach_msg_trap + 8
1 CoreFoundation 0x0000000223e35cb4 __CFRunLoopServiceMachPort + 232
2 CoreFoundation 0x0000000223e30bc4 __CFRunLoopRun + 1356
3 CoreFoundation 0x0000000223e30354 CFRunLoopRunSpecific + 432
4 Foundation 0x00000002247fdfcc -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 296
5 Foundation 0x00000002247fde5c -[NSRunLoop(NSRunLoop) runUntilDate:] + 92
6 UIKitCore 0x0000000250389540 -[UIEventFetcher threadMain] + 132
7 Foundation 0x000000022492a6e4 __NSThread__start__ + 980
8 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
9 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
10 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 9:
0 libsystem_kernel.dylib 0x0000000223a42b74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x0000000223ac7cd4 start_wqthread + 0
Thread 10:
0 libsystem_kernel.dylib 0x0000000223a41ee4 __psynch_cvwait + 8
1 MondayPundayAppiOS 0x000000010254cad8 mono_os_cond_timedwait (mono-os-mutex.c:75)
2 MondayPundayAppiOS 0x0000000102554a14 mono_thread_info_sleep (mono-coop-mutex.h:102)
3 MondayPundayAppiOS 0x00000001024d9178 monitor_thread (threadpool-worker-default.c:708)
4 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
5 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
6 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
7 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
8 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 11:
0 libsqlite3.dylib 0x00000002243597b8 sqlite3_rekey + 43208
1 libsqlite3.dylib 0x000000022431dd90 sqlite3_close + 2568
2 libsqlite3.dylib 0x0000000224360fd8 sqlite3_rekey + 73956
3 libsqlite3.dylib 0x00000002242e8964 sqlite3_step + 60920
4 libsqlite3.dylib 0x00000002242d9d24 sqlite3_step + 440
5 MondayPundayAppiOS 0x0000000102119940 wrapper_managed_to_native_SQLitePCL_SQLite3Provider_sqlite3_NativeMethods_sqlite3_step_intptr (<unknown>:1)
6 MondayPundayAppiOS 0x00000001021145d8 SQLitePCL_SQLite3Provider_sqlite3_SQLitePCL_ISQLite3Provider_sqlite3_step_intptr (<unknown>:1)
7 MondayPundayAppiOS 0x0000000102104cc4 SQLitePCLRaw_core_SQLitePCL_raw_sqlite3_step_SQLitePCL_sqlite3_stmt + 68
8 MondayPundayAppiOS 0x000000010197ea7c Xamarin_iOS_ObjCRuntime_Runtime_ThreadPoolDispatcher_System_Func_1_bool (Runtime.cs:293)
9 MondayPundayAppiOS 0x00000001024052a8 mono_jit_runtime_invoke (mini-runtime.c:3119)
10 MondayPundayAppiOS 0x00000001024aa0b8 mono_runtime_try_invoke (object.c:2960)
11 MondayPundayAppiOS 0x00000001024dbbdc worker_callback (threadpool.c:284)
12 MondayPundayAppiOS 0x00000001024d994c worker_thread (threadpool-worker-default.c:500)
13 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
14 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
15 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
16 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
17 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 12:
0 libsystem_kernel.dylib 0x0000000223a37148 semaphore_timedwait_trap + 8
1 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
2 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
3 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
4 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
5 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 13:
0 libsystem_kernel.dylib 0x0000000223a370f4 mach_msg_trap + 8
1 CoreFoundation 0x0000000223e35cb4 __CFRunLoopServiceMachPort + 232
2 CoreFoundation 0x0000000223e30bc4 __CFRunLoopRun + 1356
3 CoreFoundation 0x0000000223e30354 CFRunLoopRunSpecific + 432
4 CoreFoundation 0x0000000223e310b0 CFRunLoopRun + 76
5 CoreMotion 0x0000000229754240 0x2296df000 + 479808
6 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
7 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
8 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 14:
0 libsystem_kernel.dylib 0x0000000223a41ee4 __psynch_cvwait + 8
1 MondayPundayAppiOS 0x000000010254cad8 mono_os_cond_timedwait (mono-os-mutex.c:75)
2 MondayPundayAppiOS 0x00000001024ef48c mono_w32handle_timedwait_signal_handle (mono-coop-mutex.h:102)
3 MondayPundayAppiOS 0x00000001024ef364 mono_w32handle_wait_one (w32handle.c:0)
4 MondayPundayAppiOS 0x00000001024ef59c mono_w32handle_wait_multiple (w32handle.c:914)
5 MondayPundayAppiOS 0x00000001024defd8 ves_icall_System_Threading_WaitHandle_Wait_internal (threads.c:2126)
6 MondayPundayAppiOS 0x0000000100d86168 wrapper_managed_to_native_System_Threading_WaitHandle_Wait_internal_intptr__int_bool_int + 164
7 MondayPundayAppiOS 0x0000000100f76480 mscorlib_System_Threading_WaitHandle_WaitOneNative_System_Runtime_InteropServices_SafeHandle_uint_bool_bool (WaitHandle.cs:90)
8 MondayPundayAppiOS 0x00000001024052a8 mono_jit_runtime_invoke (mini-runtime.c:3119)
9 MondayPundayAppiOS 0x00000001024a86c0 mono_runtime_invoke_checked (object.c:2960)
10 MondayPundayAppiOS 0x00000001024adf34 mono_runtime_delegate_try_invoke (object.c:4230)
11 MondayPundayAppiOS 0x00000001024e419c start_wrapper_internal (threads.c:1163)
12 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
13 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
14 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
15 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 15:
0 libsystem_kernel.dylib 0x0000000223a41ee4 __psynch_cvwait + 8
1 MondayPundayAppiOS 0x000000010249d368 mono_monitor_try_enter_inflated (mono-os-mutex.h:173)
2 MondayPundayAppiOS 0x000000010249c248 mono_monitor_enter_internal (monitor.c:1037)
3 MondayPundayAppiOS 0x0000000100e35da0 wrapper_managed_to_native_object___icall_wrapper_mono_monitor_enter_internal_object + 92
4 MondayPundayAppiOS 0x00000001020d2020 SQLite_net_SQLite_SQLiteConnectionWithLock_Lock + 120
5 MondayPundayAppiOS 0x000000010197ea7c Xamarin_iOS_ObjCRuntime_Runtime_ThreadPoolDispatcher_System_Func_1_bool (Runtime.cs:293)
6 MondayPundayAppiOS 0x00000001024052a8 mono_jit_runtime_invoke (mini-runtime.c:3119)
7 MondayPundayAppiOS 0x00000001024aa0b8 mono_runtime_try_invoke (object.c:2960)
8 MondayPundayAppiOS 0x00000001024dbbdc worker_callback (threadpool.c:284)
9 MondayPundayAppiOS 0x00000001024d994c worker_thread (threadpool-worker-default.c:500)
10 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
11 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
12 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
13 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
14 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 16:
0 libsystem_kernel.dylib 0x0000000223a37148 semaphore_timedwait_trap + 8
1 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
2 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
3 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
4 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
5 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 17:
0 libsystem_kernel.dylib 0x0000000223a42b74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x0000000223ac7cd4 start_wqthread + 0
Thread 18:
0 ??? 0x0000000000000000 0x0 + 0
Thread 19:
0 libsystem_kernel.dylib 0x0000000223a370f4 mach_msg_trap + 8
1 CoreFoundation 0x0000000223e35cb4 __CFRunLoopServiceMachPort + 232
2 CoreFoundation 0x0000000223e30bc4 __CFRunLoopRun + 1356
3 CoreFoundation 0x0000000223e30354 CFRunLoopRunSpecific + 432
4 CFNetwork 0x000000022444974c -[__CoreSchedulingSetRunnable runForever] + 212
5 Foundation 0x000000022492a6e4 __NSThread__start__ + 980
6 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
7 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
8 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 21:
0 libsystem_kernel.dylib 0x0000000223a37148 semaphore_timedwait_trap + 8
1 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
2 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
3 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
4 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
5 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 22:
0 libsystem_kernel.dylib 0x0000000223a37148 semaphore_timedwait_trap + 8
1 MondayPundayAppiOS 0x00000001024e40dc start_wrapper_internal (threads.c:1155)
2 MondayPundayAppiOS 0x00000001024e3f60 start_wrapper (threads.c:1215)
3 libsystem_pthread.dylib 0x0000000223ac42c0 _pthread_body + 124
4 libsystem_pthread.dylib 0x0000000223ac4220 _pthread_start + 40
5 libsystem_pthread.dylib 0x0000000223ac7cdc thread_start + 0
Thread 20 crashed with arm64 Thread State:
x21: 0x0000000000000018 x2: 0x0000000253f47df8 x16: 0x0000000000000000 x3: 0x0000000000000000
x22: 0x00000002508fcc3f x4: 0x0000000000000000 x17: 0x0000000223da304c cpsr: 0x0000000020000000
x5: 0x0000000000000000 x23: 0x0000000170888480 x6: 0x0000000000000001 x18: 0x0000000000000000
x10: 0x0000000103d53000 lr: 0x00000002502d4f64 x7: 0x0000000000000000 x24: 0x00000001708884b0
x11: 0x000000080000007f x8: 0x00000002507df000 x19: 0x0000000253f47df8 x25: 0x0000000170888448
x9: 0x00000002507ca26f x12: 0x0000000103d536f0 fp: 0x00000001708883f0 x26: 0x00000001708884b0
x13: 0x0000000000000000 pc: 0x0000000223097530 x27: 0x00000001708884b0 x14: 0x0000000000000100
x20: 0x0000000280c5a6e0 x0: 0x0000000112870a00 sp: 0x00000001708883d0 x28: 0x0000000000000000
x15: 0x0000000000000000 x1: 0x00000002507dfe20
Binary Images:
0x0000000100ca8000 - 0x000000010266ffff +MondayPundayAppiOS arm64 <cc74ab33-6b69-3746-822f-11082e7aa841> /var/containers/Bundle/Application/5A9F0001-B3FA-402D-8091-2C6A7839C086/MondayPundayAppiOS.app/MondayPundayAppiOS
0x0000000223011000 - 0x0000000223066fff libc++.1.dylib arm64 <1f3ca975-2901-39bc-97a3-430e0cb586ee> /usr/lib/libc++.1.dylib
0x000000022307a000 - 0x0000000223801fff libobjc.A.dylib arm64 <6bcefc3a-e658-3699-925f-68a56dda06b5> /usr/lib/libobjc.A.dylib
0x00000002238f5000 - 0x000000022391efff libdyld.dylib arm64 <2d8aee81-500d-3479-9da5-3eb3c27a7c2b> /usr/lib/system/libdyld.dylib
0x0000000223a1f000 - 0x0000000223a49fff libsystem_kernel.dylib arm64 <8f29839b-6ebe-3d6d-8dfe-52e425f16974> /usr/lib/system/libsystem_kernel.dylib
0x0000000223ab9000 - 0x0000000223ac9fff libsystem_pthread.dylib arm64 <07458b4c-9262-35bd-835c-d4b9a95f806b> /usr/lib/system/libsystem_pthread.dylib
0x0000000223d8c000 - 0x00000002240e8fff CoreFoundation arm64 <d6fc9f35-51c3-3d41-9163-fa2be12ea3b7> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x0000000224299000 - 0x0000000224412fff libsqlite3.dylib arm64 <df9a8640-f861-3751-8b01-cff2e08a320b> /usr/lib/libsqlite3.dylib
0x0000000224448000 - 0x00000002247f5fff CFNetwork arm64 <2e500455-fc64-3d9e-b055-bdc3b1fea492> /System/Library/Frameworks/CFNetwork.framework/CFNetwork
0x00000002247f6000 - 0x0000000224ae0fff Foundation arm64 <3cfd0141-927c-31d1-9894-107bb4df91f2> /System/Library/Frameworks/Foundation.framework/Foundation
0x0000000226026000 - 0x0000000226038fff GraphicsServices arm64 <f8d3293e-5858-3c5f-b672-56d478b854a3> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x00000002281f5000 - 0x000000022842cfff QuartzCore arm64 <155936d9-5d61-3205-94cb-bd20b375bd43> /System/Library/Frameworks/QuartzCore.framework/QuartzCore
0x00000002296df000 - 0x0000000229901fff CoreMotion arm64 <60bc80f2-35f8-3c96-ad6d-399bbdb34467> /System/Library/Frameworks/CoreMotion.framework/CoreMotion
0x000000022af7c000 - 0x000000022bc28fff JavaScriptCore arm64 <7f797346-c56b-3134-8709-de5dd36360dc> /System/Library/Frameworks/JavaScriptCore.framework/JavaScriptCore
0x000000022c6c1000 - 0x000000022e077fff WebCore arm64 <a5f9ebb6-b484-331b-9c4e-c3c42f85c0e5> /System/Library/PrivateFrameworks/WebCore.framework/WebCore
0x000000024f9e9000 - 0x0000000250abafff UIKitCore arm64 <de7f002c-f3ff-3b34-bc59-66fe3c98cfa3> /System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore
brminnick
All 6 comments
I should note that the app is not using On<iOS>().SetHandleControlUpdatesOnMainThread(true); as suggested here.
I am adding this to the next release of my app using Xamarin.Forms v4.0.0.425677 and will monitor it to see if the crash no longer happens.
brminnick
on 29 May 2019
@brminnick Can you reproduce this with a small sample app, or just MondayPunday? Thanks!
samhouts
on 30 May 2019
@samhouts I'm not able to reproduce it.
But, as a work-around, I can confirm that using On<iOS>().SetHandleControlUpdatesOnMainThread(true); with v4.0.0.425677 fixes the problem.
Are there any negative performance impacts to using On<iOS>().SetHandleControlUpdatesOnMainThread(true);?
brminnick
on 19 Jun 2019
I'm not aware of any performance implications. It was added just for this purpose! :) I'll go ahead and close this, but if you do notice any degradation, please open a new issue. Thanks!
samhouts
on 26 Jun 2019
👍1
@brminnick as we are experiencing the same issue: Did you experience any performance implications so far with the fix provided?
thisisthekap
on 2 Oct 2019
@thisisthekap I only have anecdotal evidence because I didn’t do any benchmarking, but there was no noticeable performance difference after adding it to my apps.
brminnick
on 2 Oct 2019
👍1
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