iOS app crash when use AttachScreenshot=true

[albilaga]

Package

Sentry.Maui

.NET Flavor

Other

.NET Version

8.0.403

OS

iOS

SDK Version

4.13.-

Self-Hosted Sentry Version

No response

Steps to Reproduce

We have error report in Sentry that saying Application Specific Information: UIGraphicsBeginImageContext() failed to allocate CGBitampContext: size={810, 1080}, scale=2.000000, bitmapInfo=0x2002. Use UIGraphicsImageRenderer to avoid this assert. when we look at the thread that cause it also contain stack trace saying Sentry_Maui_Sentry_Maui_Internal_ScreenshotAttachmentContent__c__GetStreamb__2_1. I am not really sure actually if this is caused by Sentry or not but we do attach the attachment on sentry so it might be the cause. Here I also attach the crash report dbc983a62a9a4fb7bdef3f940462a18d-symbolicated.crash.zip

Expected Result

App should not crash or throwing exception

Actual Result

App throwing exception

[jamescrosswell]

@albilaga are you able to reproduce this issue? If so, you could try setting options.AttachScreenshot = false when initialising Sentry to see if this has any impact? That would help narrow don't whether it might be a Sentry issue or not.

[albilaga]

@jamescrosswell unfortunately not but we are setting the AttachScreenshot = false now and will monitoring for next release of our app

[albilaga]

Hi @jamescrosswell after setting AttachScreenshot = false we don't see this error anymore so it might be related

[vaind]

@jamescrosswell that option just forwards to native code, right? If so, it may be worth moving the issue to sentry-cocoa.

My two cents: it may be due to memory pressure so the device is unable to allocate desired screenshot size.

[bruno-garcia]

The stack trace from the zip file:

OS Version: iOS 18.1.1 (22B91)
Report Version: 104

Exception Type: EXC_CRASH (SIGABRT)
Crashed Thread: 0

Application Specific Information:
UIGraphicsBeginImageContext() failed to allocate CGBitampContext: size={810, 1080}, scale=2.000000, bitmapInfo=0x2002. Use UIGraphicsImageRenderer to avoid this assert.

Thread 0 Crashed:
0   CoreFoundation                  0x31af427cc         __exceptionPreprocess
1   libobjc.A.dylib                 0x3155532e0         objc_exception_throw
2   Foundation                      0x318f55a74         -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:]
3   UIKitCore                       0x31ff37558         _UIGraphicsBeginImageContextWithOptions
4   App.iOS                         0x205776dd4         wrapper_managed_to_native_UIKit_UIGraphics_BeginImageContextWithOptions_CoreGraphics_CGSize_byte_System_Runtime_InteropServices_NFloat
5   App.iOS                         0x209b0f03c         Microsoft_iOS_UIKit_UIGraphics_BeginImageContextWithOptions_CoreGraphics_CGSize_bool_System_Runtime_InteropServices_NFloat (UIGraphics.cs:92)
6   App.iOS                         0x207b4ce58         Sentry_Maui_Sentry_Maui_Internal_ScreenshotAttachmentContent__c__GetStreamb__2_1
7   App.iOS                         0x20568e960         System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_
8   App.iOS                         0x205710d78         gsharedvt_trampoline
9   App.iOS                         0x2057113f8         gsharedvt_out_trampoline
10  App.iOS                         0x205691890         System_Runtime_CompilerServices_AsyncVoidMethodBuilder_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_
11  App.iOS                         0x204c7d544         Microsoft_Maui_ApplicationModel_MainThread__c__DisplayClass6_0_1_T_REF__InvokeOnMainThreadAsyncb__0
12  App.iOS                         0x209aaa778         Microsoft_iOS_Foundation_NSAsyncActionDispatcher_Apply (NSAction.cs:153)
13  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
14  App.iOS                         0x209e9322c         [inlined] do_runtime_invoke (object.c:2576)
15  App.iOS                         0x209e9322c         mono_runtime_try_invoke (object.c:2733)
16  App.iOS                         0x209e9627c         mono_runtime_invoke (object.c:2659)
17  App.iOS                         0x209f759b0         native_to_managed_trampoline_21 (registrar.mm:1387)
18  App.iOS                         0x209fbaee0         -[__MonoMac_NSAsyncActionDispatcher xamarinApplySelector] (registrar.mm:31399)
19  Foundation                      0x3187ede4c         __NSThreadPerformPerform
20  CoreFoundation                  0x31af16324         __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
21  CoreFoundation                  0x31af162b8         __CFRunLoopDoSource0
22  CoreFoundation                  0x31af13dbc         __CFRunLoopDoSources0
23  CoreFoundation                  0x31af12fb8         __CFRunLoopRun
24  CoreFoundation                  0x31af1282c         CFRunLoopRunSpecific
25  GraphicsServices                0x3b2f231c0         GSEventRunModal
26  UIKitCore                       0x32025eeac         -[UIApplication _run]
27  UIKitCore                       0x32030d5b0         UIApplicationMain
28  App.iOS                         0x209bdd0a4         xamarin_UIApplicationMain (bindings.m:126)
29  App.iOS                         0x205776aac         wrapper_managed_to_native_UIKit_UIApplication_xamarin_UIApplicationMain_int_intptr_intptr_intptr_intptr_
30  App.iOS                         0x209afcec0         Microsoft_iOS_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr (UIApplication.cs:61)
31  App.iOS                         0x206574300         App_iOS_App_iOS_Application_Main_string__ (Main.cs:14)
32  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
33  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
34  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
35  App.iOS                         0x209e9978c         [inlined] do_exec_main_checked
36  App.iOS                         0x209e9978c         mono_runtime_exec_main_checked (object.c:4775)
37  App.iOS                         0x209efcd14         [inlined] mono_jit_exec_internal (driver.c:1369)
38  App.iOS                         0x209efcd14         mono_jit_exec (driver.c:1314)
39  App.iOS                         0x209bf12e8         xamarin_main (monotouch-main.m:495)
40  App.iOS                         0x209f6fa08         main (main.arm64.mm:494)
41  <unknown>                       0x1bdb3eec8         <redacted>

Thread 0 name: tid_103 Crashed:
0   CoreFoundation                  0x31af427cc         __exceptionPreprocess
1   libobjc.A.dylib                 0x3155532e0         objc_exception_throw
2   Foundation                      0x318f55a74         -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:]
3   UIKitCore                       0x31ff37558         _UIGraphicsBeginImageContextWithOptions
4   App.iOS                         0x205776dd4         wrapper_managed_to_native_UIKit_UIGraphics_BeginImageContextWithOptions_CoreGraphics_CGSize_byte_System_Runtime_InteropServices_NFloat
5   App.iOS                         0x209b0f03c         Microsoft_iOS_UIKit_UIGraphics_BeginImageContextWithOptions_CoreGraphics_CGSize_bool_System_Runtime_InteropServices_NFloat (UIGraphics.cs:92)
6   App.iOS                         0x207b4ce58         Sentry_Maui_Sentry_Maui_Internal_ScreenshotAttachmentContent__c__GetStreamb__2_1
7   App.iOS                         0x20568e960         System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_
8   App.iOS                         0x205710d78         gsharedvt_trampoline
9   App.iOS                         0x2057113f8         gsharedvt_out_trampoline
10  App.iOS                         0x205691890         System_Runtime_CompilerServices_AsyncVoidMethodBuilder_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_
11  App.iOS                         0x204c7d544         Microsoft_Maui_ApplicationModel_MainThread__c__DisplayClass6_0_1_T_REF__InvokeOnMainThreadAsyncb__0
12  App.iOS                         0x209aaa778         Microsoft_iOS_Foundation_NSAsyncActionDispatcher_Apply (NSAction.cs:153)
13  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
14  App.iOS                         0x209e9322c         [inlined] do_runtime_invoke (object.c:2576)
15  App.iOS                         0x209e9322c         mono_runtime_try_invoke (object.c:2733)
16  App.iOS                         0x209e9627c         mono_runtime_invoke (object.c:2659)
17  App.iOS                         0x209f759b0         native_to_managed_trampoline_21 (registrar.mm:1387)
18  App.iOS                         0x209fbaee0         -[__MonoMac_NSAsyncActionDispatcher xamarinApplySelector] (registrar.mm:31399)
19  Foundation                      0x3187ede4c         __NSThreadPerformPerform
20  CoreFoundation                  0x31af16324         __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
21  CoreFoundation                  0x31af162b8         __CFRunLoopDoSource0
22  CoreFoundation                  0x31af13dbc         __CFRunLoopDoSources0
23  CoreFoundation                  0x31af12fb8         __CFRunLoopRun
24  CoreFoundation                  0x31af1282c         CFRunLoopRunSpecific
25  GraphicsServices                0x3b2f231c0         GSEventRunModal
26  UIKitCore                       0x32025eeac         -[UIApplication _run]
27  UIKitCore                       0x32030d5b0         UIApplicationMain
28  App.iOS                         0x209bdd0a4         xamarin_UIApplicationMain (bindings.m:126)
29  App.iOS                         0x205776aac         wrapper_managed_to_native_UIKit_UIApplication_xamarin_UIApplicationMain_int_intptr_intptr_intptr_intptr_
30  App.iOS                         0x209afcec0         Microsoft_iOS_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr (UIApplication.cs:61)
31  App.iOS                         0x206574300         App_iOS_App_iOS_Application_Main_string__ (Main.cs:14)
32  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
33  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
34  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
35  App.iOS                         0x209e9978c         [inlined] do_exec_main_checked
36  App.iOS                         0x209e9978c         mono_runtime_exec_main_checked (object.c:4775)
37  App.iOS                         0x209efcd14         [inlined] mono_jit_exec_internal (driver.c:1369)
38  App.iOS                         0x209efcd14         mono_jit_exec (driver.c:1314)
39  App.iOS                         0x209bf12e8         xamarin_main (monotouch-main.m:495)
40  App.iOS                         0x209f6fa08         main (main.arm64.mm:494)
41  <unknown>                       0x1bdb3eec8         <redacted>

Thread 1 name: SGen worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209e1f470         [inlined] mono_os_cond_wait (mono-os-mutex.h:219)
3   App.iOS                         0x209e1f470         [inlined] get_work (sgen-thread-pool.c:164)
4   App.iOS                         0x209e1f470         thread_func (sgen-thread-pool.c:195)
5   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 2 name: Finalizer
0   libsystem_kernel.dylib          0x3bb6e7604         semaphore_wait_trap
1   App.iOS                         0x209ed4878         [inlined] mono_os_sem_wait (mono-os-semaphore.h:85)
2   App.iOS                         0x209ed4878         [inlined] mono_coop_sem_wait (mono-coop-semaphore.h:41)
3   App.iOS                         0x209ed4878         finalizer_thread (gc.c:891)
4   App.iOS                         0x209eacf78         [inlined] start_wrapper_internal (threads.c:1202)
5   App.iOS                         0x209eacf78         start_wrapper (threads.c:1271)
6   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 3 name: com.apple.uikit.eventfetch-thread
0   libsystem_kernel.dylib          0x3bb6e7688         mach_msg2_trap
1   libsystem_kernel.dylib          0x3bb6ead94         mach_msg2_internal
2   libsystem_kernel.dylib          0x3bb6eacac         mach_msg_overwrite
3   libsystem_kernel.dylib          0x3bb6eaaf8         mach_msg
4   CoreFoundation                  0x31af13a80         __CFRunLoopServiceMachPort
5   CoreFoundation                  0x31af1312c         __CFRunLoopRun
6   CoreFoundation                  0x31af1282c         CFRunLoopRunSpecific
7   Foundation                      0x3187fd4fc         -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
8   Foundation                      0x3187fd34c         -[NSRunLoop(NSRunLoop) runUntilDate:]
9   UIKitCore                       0x320272354         -[UIEventFetcher threadMain]
10  Foundation                      0x31880e6c4         __NSThread__start__
11  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 4 name: .NET TP Worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccddc         [inlined] mono_os_cond_wait (mono-os-mutex.h:219)
3   App.iOS                         0x209dccddc         mono_os_cond_timedwait (mono-os-mutex.c:32)
4   App.iOS                         0x209eb20cc         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
5   App.iOS                         0x209eb20cc         [inlined] mono_w32handle_timedwait_signal_naked (w32handle.c:514)
6   App.iOS                         0x209eb20cc         mono_w32handle_timedwait_signal_handle (w32handle.c:629)
7   App.iOS                         0x209eb1f70         mono_w32handle_wait_one (w32handle.c:728)
8   App.iOS                         0x209ed634c         [inlined] mono_monitor_wait (monitor.c:1348)
9   App.iOS                         0x209ed634c         ves_icall_System_Threading_Monitor_Monitor_wait (monitor.c:1427)
10  App.iOS                         0x209e61f94         ves_icall_System_Threading_Monitor_Monitor_wait_raw (icall-def.h:595)
11  App.iOS                         0x20551ed74         wrapper_managed_to_native_System_Threading_Monitor_Monitor_wait_object_int_bool
12  App.iOS                         0x2098ac6e0         corlib_System_Threading_Monitor_ObjWait_int_object
13  App.iOS                         0x2051ecb20         System_Collections_Concurrent_BlockingCollection_1_T_REF_TryTakeWithNoTimeValidation_T_REF__int_System_Threading_CancellationToken_System_Threading_CancellationTokenSource (<unknown>:1)
14  App.iOS                         0x208c7e318         System_Collections_Concurrent_System_Collections_Concurrent_BlockingCollection_1__GetConsumingEnumerabled__68_T_REF_MoveNext
15  App.iOS                         0x20568e960         System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_
16  App.iOS                         0x20886bc04         App_App_Notifications_NotificationPayloadManager__c__DisplayClass9_0__StartNotificationPayloadProcessorb__0
17  App.iOS                         0x2098e1064         corlib_System_Threading_Tasks_Task_ExecuteEntryUnsafe_System_Threading_Thread
18  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
19  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
20  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
21  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
22  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
23  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 5 name: .NET TP Gate
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a78         _pthread_cond_wait
2   App.iOS                         0x209c596a0         SystemNative_LowLevelMonitor_TimedWait (pal_threading.c:177)
3   App.iOS                         0x2056ed918         wrapper_managed_to_native_Interop_Sys__LowLevelMonitor_TimedWaitg____PInvoke_67_0_intptr_int
4   App.iOS                         0x20970cd10         corlib_Interop_Sys_LowLevelMonitor_TimedWait_intptr_int
5   App.iOS                         0x2098ad910         corlib_System_Threading_Thread_StartCallback
6   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
7   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
8   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
9   App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
10  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
11  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 6 name: .NET TP Worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccddc         [inlined] mono_os_cond_wait (mono-os-mutex.h:219)
3   App.iOS                         0x209dccddc         mono_os_cond_timedwait (mono-os-mutex.c:32)
4   App.iOS                         0x209eb20cc         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
5   App.iOS                         0x209eb20cc         [inlined] mono_w32handle_timedwait_signal_naked (w32handle.c:514)
6   App.iOS                         0x209eb20cc         mono_w32handle_timedwait_signal_handle (w32handle.c:629)
7   App.iOS                         0x209eb1f70         mono_w32handle_wait_one (w32handle.c:728)
8   App.iOS                         0x209ed634c         [inlined] mono_monitor_wait (monitor.c:1348)
9   App.iOS                         0x209ed634c         ves_icall_System_Threading_Monitor_Monitor_wait (monitor.c:1427)
10  App.iOS                         0x209e61f94         ves_icall_System_Threading_Monitor_Monitor_wait_raw (icall-def.h:595)
11  App.iOS                         0x20551ed74         wrapper_managed_to_native_System_Threading_Monitor_Monitor_wait_object_int_bool
12  App.iOS                         0x2098ac6e0         corlib_System_Threading_Monitor_ObjWait_int_object
13  App.iOS                         0x2051ecb20         System_Collections_Concurrent_BlockingCollection_1_T_REF_TryTakeWithNoTimeValidation_T_REF__int_System_Threading_CancellationToken_System_Threading_CancellationTokenSource (<unknown>:1)
14  App.iOS                         0x208c7e318         System_Collections_Concurrent_System_Collections_Concurrent_BlockingCollection_1__GetConsumingEnumerabled__68_T_REF_MoveNext
15  App.iOS                         0x2098e11c8         corlib_System_Threading_Tasks_Task_InnerInvoke
16  App.iOS                         0x2098e1064         corlib_System_Threading_Tasks_Task_ExecuteEntryUnsafe_System_Threading_Thread
17  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
18  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
19  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
20  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
21  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
22  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 7 name: .NET Long Running Task
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a78         _pthread_cond_wait
2   App.iOS                         0x209c596a0         SystemNative_LowLevelMonitor_TimedWait (pal_threading.c:177)
3   App.iOS                         0x2056ed918         wrapper_managed_to_native_Interop_Sys__LowLevelMonitor_TimedWaitg____PInvoke_67_0_intptr_int
4   App.iOS                         0x20970cd10         corlib_Interop_Sys_LowLevelMonitor_TimedWait_intptr_int
5   App.iOS                         0x2098e11c8         corlib_System_Threading_Tasks_Task_InnerInvoke
6   App.iOS                         0x2098e1064         corlib_System_Threading_Tasks_Task_ExecuteEntryUnsafe_System_Threading_Thread
7   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
8   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
9   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
10  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
11  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
12  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 8 name: .NET Timer
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a78         _pthread_cond_wait
2   App.iOS                         0x209c596a0         SystemNative_LowLevelMonitor_TimedWait (pal_threading.c:177)
3   App.iOS                         0x2056ed918         wrapper_managed_to_native_Interop_Sys__LowLevelMonitor_TimedWaitg____PInvoke_67_0_intptr_int
4   App.iOS                         0x20970cd10         corlib_Interop_Sys_LowLevelMonitor_TimedWait_intptr_int
5   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
6   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
7   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
8   App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
9   App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
10  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 9
0   libsystem_kernel.dylib          0x3bb6ed1b0         __semwait_signal
1   libsystem_c.dylib               0x32aa0ba74         nanosleep
2   libsystem_c.dylib               0x32aa6954c         sleep
3   Sentry                          0x10b96f900         monitorCachedData
4   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 10 name: SentryCrash Exception Handler (Secondary)
0   libsystem_kernel.dylib          0x3bb6e7688         mach_msg2_trap
1   libsystem_kernel.dylib          0x3bb6ead94         mach_msg2_internal
2   libsystem_kernel.dylib          0x3bb6e8bf8         thread_suspend
3   Sentry                          0x10b955d24         handleExceptions
4   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 11 name: SentryCrash Exception Handler (Primary)
0   libsystem_kernel.dylib          0x3bb6e7688         mach_msg2_trap
1   libsystem_kernel.dylib          0x3bb6ead94         mach_msg2_internal
2   libsystem_kernel.dylib          0x3bb6eacac         mach_msg_overwrite
3   libsystem_kernel.dylib          0x3bb6eaaf8         mach_msg
4   Sentry                          0x10b955d50         handleExceptions
5   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 12 name: io.sentry.app-hang-tracker
0   libsystem_kernel.dylib          0x3bb6ed1b0         __semwait_signal
1   libsystem_c.dylib               0x32aa0ba74         nanosleep
2   Foundation                      0x318914af4         +[NSThread sleepForTimeInterval:]
3   Sentry                          0x10b935ccc         -[SentryANRTracker detectANRs]
4   Foundation                      0x31880e6c4         __NSThread__start__
5   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 13 name: .NET TP Worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccddc         [inlined] mono_os_cond_wait (mono-os-mutex.h:219)
3   App.iOS                         0x209dccddc         mono_os_cond_timedwait (mono-os-mutex.c:32)
4   App.iOS                         0x209eb20cc         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
5   App.iOS                         0x209eb20cc         [inlined] mono_w32handle_timedwait_signal_naked (w32handle.c:514)
6   App.iOS                         0x209eb20cc         mono_w32handle_timedwait_signal_handle (w32handle.c:629)
7   App.iOS                         0x209eb1f70         mono_w32handle_wait_one (w32handle.c:728)
8   App.iOS                         0x209ed634c         [inlined] mono_monitor_wait (monitor.c:1348)
9   App.iOS                         0x209ed634c         ves_icall_System_Threading_Monitor_Monitor_wait (monitor.c:1427)
10  App.iOS                         0x209e61f94         ves_icall_System_Threading_Monitor_Monitor_wait_raw (icall-def.h:595)
11  App.iOS                         0x20551ed74         wrapper_managed_to_native_System_Threading_Monitor_Monitor_wait_object_int_bool
12  App.iOS                         0x2098ac6e0         corlib_System_Threading_Monitor_ObjWait_int_object
13  App.iOS                         0x2051ecb20         System_Collections_Concurrent_BlockingCollection_1_T_REF_TryTakeWithNoTimeValidation_T_REF__int_System_Threading_CancellationToken_System_Threading_CancellationTokenSource (<unknown>:1)
14  App.iOS                         0x208c7e318         System_Collections_Concurrent_System_Collections_Concurrent_BlockingCollection_1__GetConsumingEnumerabled__68_T_REF_MoveNext
15  App.iOS                         0x2089e08ac         App_System_Runtime_CompilerServices_AsyncTaskMethodBuilder_1_AsyncStateMachineBox_1_System_Threading_Tasks_VoidTaskResult_App_DeferredQueues_DeferredActionQueue__c__DisplayClass8_0___StartProcessingb__0d_ExecutionContextCallback_object
16  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
17  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
18  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
19  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
20  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
21  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 14 name: .NET TP Worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccddc         [inlined] mono_os_cond_wait (mono-os-mutex.h:219)
3   App.iOS                         0x209dccddc         mono_os_cond_timedwait (mono-os-mutex.c:32)
4   App.iOS                         0x209eb20cc         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
5   App.iOS                         0x209eb20cc         [inlined] mono_w32handle_timedwait_signal_naked (w32handle.c:514)
6   App.iOS                         0x209eb20cc         mono_w32handle_timedwait_signal_handle (w32handle.c:629)
7   App.iOS                         0x209eb1f70         mono_w32handle_wait_one (w32handle.c:728)
8   App.iOS                         0x209ed634c         [inlined] mono_monitor_wait (monitor.c:1348)
9   App.iOS                         0x209ed634c         ves_icall_System_Threading_Monitor_Monitor_wait (monitor.c:1427)
10  App.iOS                         0x209e61f94         ves_icall_System_Threading_Monitor_Monitor_wait_raw (icall-def.h:595)
11  App.iOS                         0x20551ed74         wrapper_managed_to_native_System_Threading_Monitor_Monitor_wait_object_int_bool
12  App.iOS                         0x2098ac6e0         corlib_System_Threading_Monitor_ObjWait_int_object
13  App.iOS                         0x2051ecb20         System_Collections_Concurrent_BlockingCollection_1_T_REF_TryTakeWithNoTimeValidation_T_REF__int_System_Threading_CancellationToken_System_Threading_CancellationTokenSource (<unknown>:1)
14  App.iOS                         0x208c7d740         System_Collections_Concurrent_System_Collections_Concurrent_BlockingCollection_1_T_REF_TryTake_T_REF__int_System_Threading_CancellationToken
15  App.iOS                         0x20568e960         System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_
16  App.iOS                         0x2065eb294         Akavache_Sqlite3_Akavache_Sqlite3_SqliteOperationQueue__c__DisplayClass18_0__Startb__0
17  App.iOS                         0x2098e1064         corlib_System_Threading_Tasks_Task_ExecuteEntryUnsafe_System_Threading_Thread
18  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
19  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
20  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
21  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
22  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
23  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 15 name: com.apple.NSURLConnectionLoader
0   libsystem_kernel.dylib          0x3bb6e7688         mach_msg2_trap
1   libsystem_kernel.dylib          0x3bb6ead94         mach_msg2_internal
2   libsystem_kernel.dylib          0x3bb6eacac         mach_msg_overwrite
3   libsystem_kernel.dylib          0x3bb6eaaf8         mach_msg
4   CoreFoundation                  0x31af13a80         __CFRunLoopServiceMachPort
5   CoreFoundation                  0x31af1312c         __CFRunLoopRun
6   CoreFoundation                  0x31af1282c         CFRunLoopRunSpecific
7   CFNetwork                       0x31d95fedc         +[__CFN_CoreSchedulingSetRunnable _run:]
8   Foundation                      0x31880e6c4         __NSThread__start__
9   libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 16 name: tid_e113
0   libsystem_kernel.dylib          0x3bb6e7410         __workq_kernreturn
1   libsystem_pthread.dylib         0x42b7b6cc4         _pthread_wqthread

Thread 17 name: .NET TP Worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccdb4         mono_os_cond_timedwait (mono-os-mutex.c:75)
3   App.iOS                         0x209dd1718         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
4   App.iOS                         0x209dd1718         mono_lifo_semaphore_timed_wait (lifo-semaphore.c:56)
5   App.iOS                         0x20551fa2c         wrapper_managed_to_native_System_Threading_LowLevelLifoSemaphore_TimedWaitInternal_intptr_int
6   App.iOS                         0x2098afd14         corlib_System_Threading_LowLevelLifoSemaphore_WaitForSignal_int
7   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
8   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
9   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
10  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
11  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
12  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 18 name: .NET TP Worker
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccdb4         mono_os_cond_timedwait (mono-os-mutex.c:75)
3   App.iOS                         0x209dd1718         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
4   App.iOS                         0x209dd1718         mono_lifo_semaphore_timed_wait (lifo-semaphore.c:56)
5   App.iOS                         0x20551fa2c         wrapper_managed_to_native_System_Threading_LowLevelLifoSemaphore_TimedWaitInternal_intptr_int
6   App.iOS                         0x2098afd14         corlib_System_Threading_LowLevelLifoSemaphore_WaitForSignal_int
7   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
8   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
9   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
10  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
11  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
12  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 19 name: tid_1750b
0   libsystem_pthread.dylib         0x42b7b3480         start_wqthread

Thread 20
0   libsystem_kernel.dylib          0x3bb6e7410         __workq_kernreturn
1   libsystem_pthread.dylib         0x42b7b6cc4         _pthread_wqthread

Thread 21 name: tid_f607
0   libsystem_pthread.dylib         0x42b7b3480         start_wqthread

Thread 22
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccddc         [inlined] mono_os_cond_wait (mono-os-mutex.h:219)
3   App.iOS                         0x209dccddc         mono_os_cond_timedwait (mono-os-mutex.c:32)
4   App.iOS                         0x209eb20cc         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
5   App.iOS                         0x209eb20cc         [inlined] mono_w32handle_timedwait_signal_naked (w32handle.c:514)
6   App.iOS                         0x209eb20cc         mono_w32handle_timedwait_signal_handle (w32handle.c:629)
7   App.iOS                         0x209eb1f70         mono_w32handle_wait_one (w32handle.c:728)
8   App.iOS                         0x209ed634c         [inlined] mono_monitor_wait (monitor.c:1348)
9   App.iOS                         0x209ed634c         ves_icall_System_Threading_Monitor_Monitor_wait (monitor.c:1427)
10  App.iOS                         0x209e61f94         ves_icall_System_Threading_Monitor_Monitor_wait_raw (icall-def.h:595)
11  App.iOS                         0x20551ed74         wrapper_managed_to_native_System_Threading_Monitor_Monitor_wait_object_int_bool
12  App.iOS                         0x2098ac6e0         corlib_System_Threading_Monitor_ObjWait_int_object
13  App.iOS                         0x205522a94         System_Threading_Tasks_Task_SpinThenBlockingWait_int_System_Threading_CancellationToken
14  App.iOS                         0x2098e1d40         corlib_System_Threading_Tasks_Task_InternalWaitCore_int_System_Threading_CancellationToken
15  App.iOS                         0x207a215ac         Sentry_Sentry_SentryClient_DoSendEvent_Sentry_SentryEvent_Sentry_SentryHint_Sentry_Scope
16  App.iOS                         0x2077bb858         NLog_NLog_Targets_Target_Write_NLog_Common_AsyncLogEventInfo
17  App.iOS                         0x204f82a28         System_Reactive_Linq_ObservableImpl_SelectMany_2_ObservableSelector___TSource_REF_TResult_REF_OnNext_TSource_REF (<unknown>:1)
18  App.iOS                         0x20827ec70         System_Reactive_System_Reactive_Sink_1_TTarget_REF_ForwardOnNext_TTarget_REF
19  App.iOS                         0x204fb5294         System_Reactive_Concurrency_TaskPoolScheduler_ScheduledWorkItem_1__c_TState_GSHAREDVT___ctorb__4_0_object (<unknown>:1)
20  App.iOS                         0x2098e11bc         corlib_System_Threading_Tasks_Task_InnerInvoke
21  App.iOS                         0x2098e1064         corlib_System_Threading_Tasks_Task_ExecuteEntryUnsafe_System_Threading_Thread
22  App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
23  App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
24  App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
25  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
26  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
27  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 23
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccdb4         mono_os_cond_timedwait (mono-os-mutex.c:75)
3   App.iOS                         0x209dd1718         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
4   App.iOS                         0x209dd1718         mono_lifo_semaphore_timed_wait (lifo-semaphore.c:56)
5   App.iOS                         0x20551fa2c         wrapper_managed_to_native_System_Threading_LowLevelLifoSemaphore_TimedWaitInternal_intptr_int
6   App.iOS                         0x2098afd14         corlib_System_Threading_LowLevelLifoSemaphore_WaitForSignal_int
7   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
8   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
9   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
10  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
11  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
12  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 24
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccdb4         mono_os_cond_timedwait (mono-os-mutex.c:75)
3   App.iOS                         0x209dd1718         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
4   App.iOS                         0x209dd1718         mono_lifo_semaphore_timed_wait (lifo-semaphore.c:56)
5   App.iOS                         0x20551fa2c         wrapper_managed_to_native_System_Threading_LowLevelLifoSemaphore_TimedWaitInternal_intptr_int
6   App.iOS                         0x2098afd14         corlib_System_Threading_LowLevelLifoSemaphore_WaitForSignal_int
7   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
8   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
9   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
10  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
11  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
12  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 25
0   libsystem_kernel.dylib          0x3bb6e7410         __workq_kernreturn
1   libsystem_pthread.dylib         0x42b7b6cc4         _pthread_wqthread

Thread 26
0   libsystem_kernel.dylib          0x3bb6ecf90         __psynch_cvwait
1   libsystem_pthread.dylib         0x42b7b5a4c         _pthread_cond_wait
2   App.iOS                         0x209dccdb4         mono_os_cond_timedwait (mono-os-mutex.c:75)
3   App.iOS                         0x209dd1718         [inlined] mono_coop_cond_timedwait (mono-coop-mutex.h:103)
4   App.iOS                         0x209dd1718         mono_lifo_semaphore_timed_wait (lifo-semaphore.c:56)
5   App.iOS                         0x20551fa2c         wrapper_managed_to_native_System_Threading_LowLevelLifoSemaphore_TimedWaitInternal_intptr_int
6   App.iOS                         0x2098afd14         corlib_System_Threading_LowLevelLifoSemaphore_WaitForSignal_int
7   App.iOS                         0x209ef67b4         mono_jit_runtime_invoke (mini-runtime.c:3647)
8   App.iOS                         0x209e9222c         [inlined] do_runtime_invoke (object.c:2576)
9   App.iOS                         0x209e9222c         mono_runtime_invoke_checked (object.c:2792)
10  App.iOS                         0x209ead070         [inlined] start_wrapper_internal (threads.c:1213)
11  App.iOS                         0x209ead070         start_wrapper (threads.c:1271)
12  libsystem_pthread.dylib         0x42b7b8378         _pthread_start

Thread 27
0   libsystem_kernel.dylib          0x3bb6e7688         mach_msg2_trap
1   libsystem_kernel.dylib          0x3bb6ead94         mach_msg2_internal
2   libsystem_kernel.dylib          0x3bb6eacac         mach_msg_overwrite
3   libsystem_kernel.dylib          0x3bb6eaaf8         mach_msg
4   CoreFoundation                  0x31af13a80         __CFRunLoopServiceMachPort
5   CoreFoundation                  0x31af1312c         __CFRunLoopRun
6   CoreFoundation                  0x31af1282c         CFRunLoopRunSpecific
7   CoreFoundation                  0x31af7dce8         CFRunLoopRun
8   CoreMotion                      0x335874084         <redacted>
9   libsystem_pthread.dylib         0x42b7b8378         _pthread_start





EOF

[vaind]

Thanks, so it is actually MAUI code. We could either do it ourselves properly (with reduced pixel ratio) or raise it upstream.
In any case, we should wrap our call in try-catch

Does that make sense @jamescrosswell ?

[jamescrosswell]

Thanks @bruno-garcia @vaind

Thanks, so it is actually MAUI code. We could either do it ourselves properly (with reduced pixel ratio) or raise it upstream.
In any case, we should wrap our call in try-catch

Does that make sense @jamescrosswell ?

Yes to both of these things. As this results in a crash, I'll bump the priority on this.

• We should wrap it in a try..catch..log ASAP
• Will see if we can raise an issue upstream... although that will be challenging without a minmal repro. At the very least, we can ask in the discord channels to see if anyone else has bumped into something like this