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[MeshCore App][macOS] Silent crash (SIGSEGV in FlutterMacOS) on pointer movement — regression introduced by the Flutter engine bump in app 1.48.0 #3520

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[MeshCore App][macOS] Silent crash (SIGSEGV in FlutterMacOS) on pointer movement — regression introduced by the Flutter engine bump in app 1.48.0#3520

Description

@alexxxst
alexxxst
opened on Sep 28, 2026

Summary

The official macOS companion app (com.liamcottle.meshcore.macos, the zip build from files.liamcottle.net, not the App Store build) exits abruptly with EXC_BAD_ACCESS (SIGSEGV). From the user's side it is a silent crash: the window disappears, there is no dialog, no Dart exception and no chance to save state.

The crash report (1.50.0, build 78) shows the fault on the main thread while AppKit routes a mouse-moved event into the Flutter view — i.e. while the pointer is over the window and AppKit updates its tracking areas. Users describe it as "the app crashes when opening menus / clicking on UI elements", but the stack says the trigger is pointer movement over the window, not the click itself.

It reproduces on 1.50.0 (78); the reporter's own experience is that older builds are stable and the problem started around 1.47–1.48. The engine table below shows the bundled Flutter engine changed exactly at 1.48.0, which matches that boundary.

Environment
App MeshCore 1.50.0 (78), bundle id com.liamcottle.meshcore.macos
Build source https://files.liamcottle.net/MeshCore/v1.50.0/MeshCore-v1.50.0+78-b7528a7-macos.zip
Crash binary /Applications/MeshCore.app/Contents/MacOS/MeshCore (ARM-64 native, universal build)
Bundled engine FlutterMacOS.framework uuid 4c4c4491-5555-3144-a13d-98496080a6b4, Dart SDK 3.12.2 (built 2026-06-09)
macOS 27.0 (26A428), Release Type: User, SIP enabled
Hardware Mac17,7 — Apple M5 Max, 36 GB
Displays Color LCD, 3024 x 1964 Retina, Main, MirrorOff, Online / M28U, 4096 x 2304, MirrorOff, Online
App uptime before this crash launched 20:31:52, crashed 23:27:21 (~2 h 56 min)
Incident 96B5CED2-4430-49DB-8244-43301C49CDF4

Steps to reproduce

  1. Install 1.50.0 (or 1.48.0/1.49.0) from the zip above and connect a companion node as usual.
  2. Keep the app running and work with it normally: move the pointer across the window, hover UI elements, open and close menus/screens, click contacts and channels.
  3. Within minutes to a few hours the process exits to the desktop with no message.

So far the reporter has not isolated a hover-only repro (whether it can crash without any click), so if that is useful I can try to narrow it down.

Crash signature

Report header:

Process:             MeshCore [37863]
Path:                /Applications/MeshCore.app/Contents/MacOS/MeshCore
Identifier:          com.liamcottle.meshcore.macos
Version:             1.50.0 (78)
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           com.liamcottle.meshcore.macos
User ID:             501

Date/Time:           2026-09-25 23:27:21.2885 +0300
Launch Time:         2026-09-25 20:31:52.2732 +0300
Hardware Model:      Mac17,7
OS Version:          macOS 27.0 (26A428)
Release Type:        User

Crash Reporter Key:  REDACTED
Incident Identifier: 96B5CED2-4430-49DB-8244-43301C49CDF4

Time Awake Since Boot: 870000 seconds

System Integrity Protection: enabled

Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread

Exception Type:    EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0xffffffffffffffff
Exception Codes:   0x0000000000000001, 0xffffffffffffffff

Termination Reason:  Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [37863]


VM Region Info: 0xffffffffffffffff is not in any region.  
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      UNUSED SPACE AT END

Faulting thread — main thread, inside the mouse-moved routing path:

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   FlutterMacOS                  	       0x103ac0490 0x102fa0000 + 11666576
1   FlutterMacOS                  	       0x103ac0474 0x102fa0000 + 11666548
2   FlutterMacOS                  	       0x102fd490c 0x102fa0000 + 215308
3   FlutterMacOS                  	       0x102fd4804 0x102fa0000 + 215044
4   AppKit                        	       0x19415061c ___collectTrackingAreasForTargetAndWinLoc_block_invoke + 172
5   CoreFoundation                	       0x18f505dec __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
6   CoreFoundation                	       0x18f505c98 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 388
7   AppKit                        	       0x19414928c -[_NSTrackingAreaAKManager _updateActiveTrackingAreasForWindowLocation:modifierFlags:] + 1196
8   AppKit                        	       0x19414c8a8 -[_NSTrackingAreaAKManager _mouseMoved:] + 344
9   AppKit                        	       0x19459d458 _routeMouseMovedEvent + 228
10  AppKit                        	       0x193beef38 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 560
11  AppKit                        	       0x193beeb70 -[NSWindow(NSEventRouting) sendEvent:] + 304
12  AppKit                        	       0x19433f654 routeMouseMovedEvent + 148
13  AppKit                        	       0x19433ec74 -[NSApplication(NSEventRouting) sendEvent:] + 984
14  AppKit                        	       0x193e64d48 -[NSApplication _handleEvent:] + 60
15  AppKit                        	       0x193abb95c -[NSApplication run] + 476
16  AppKit                        	       0x193a93c4c NSApplicationMain + 880
17  MeshCore                      	       0x100ece9d0 main + 36
18  dyld                          	       0x18f07be80 start + 6688

Registers at the fault (far is the address being read, esr the fault type):

Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000007573843c00   x2: 0x000000016ef325c7   x3: 0x0000000000000001
    x4: 0x0000000000000001   x5: 0x0000000000000400   x6: 0x0000007572ef0000   x7: 0xffffffffb00007ff
    x8: 0xffffffffffffffff   x9: 0xffffff8a8c7bc3ff  x10: 0x0000000000000001  x11: 0x0000007573be8148
   x12: 0x0000000000000018  x13: 0x0000007573a49170  x14: 0x0300000103d17d6f  x15: 0x00000001f4fd48d0
   x16: 0x00000001f4fd48d0  x17: 0x000000018efd5e48  x18: 0x0000000000000000  x19: 0x000000016ef325c7
   x20: 0x0000007573843c00  x21: 0x0000000000000001  x22: 0x000000757372fc00  x23: 0x0000000000000001
   x24: 0x0000000000000000  x25: 0x0000000000000000  x26: 0x0000000000000001  x27: 0x0000000000000001
   x28: 0x00000075733c0820   fp: 0x000000016ef32590   lr: 0x0000000103ac0474
    sp: 0x000000016ef324c0   pc: 0x0000000103ac0490 cpsr: 0x80000000
   far: 0xffffffffffffffff  esr: 0x92000004 (Data Abort) byte read Translation fault

Evidence: the regression tracks the Flutter engine, not app features

The crash address falls inside FlutterMacOS.framework (frames 0–3); AppKit only calls into it. Frames in the engine are unsymbolicated because the shipped app has no dSYM, which is why the report is framed around the engine binary identity.

I compared the engine binary of every macOS release still on the download server by reading the LC_UUID out of FlutterMacOS.framework/Versions/A/FlutterMacOS:

App version FlutterMacOS uuid Dart SDK / engine build
1.44.0 4c4c44d3-5555-3144-a1aa-3b916e463643 3.7.0 (2025-02-05)
1.45.0 4c4c44d3-5555-3144-a1aa-3b916e463643 3.7.0
1.46.0 4c4c44d3-5555-3144-a1aa-3b916e463643 3.7.0
1.47.0 4c4c44d3-5555-3144-a1aa-3b916e463643 3.7.0
1.48.0 4c4c4491-5555-3144-a13d-98496080a6b4 3.12.2 (2026-06-09)
1.49.0 4c4c4491-5555-3144-a13d-98496080a6b4 3.12.2
1.50.0 4c4c4491-5555-3144-a13d-98496080a6b4 3.12.2

The uuid recorded in this crash report is 4c4c4491-5555-3144-a13d-98496080a6b4 — i.e. the engine that first shipped in 1.48.0, unchanged through 1.50.0. The reporter (who has been rolling back to older builds to keep using the app) recalls the last known-good version as around 1.47.0, which lines up with the engine change point above. Note that rolling back to 1.48.0 or 1.49.0 does not change the engine, so it should not help; only < 1.48 does.

Reproduce the measurement with:

curl -sLO https://files.liamcottle.net/MeshCore/v1.50.0/MeshCore-v1.50.0+78-b7528a7-macos.zip
unzip -q MeshCore-v1.50.0+78-b7528a7-macos.zip
dwarfdump --uuid MeshCore.app/Contents/Frameworks/FlutterMacOS.framework/Versions/A/FlutterMacOS

Workaround

Roll back to 1.47.0 (https://files.liamcottle.net/MeshCore/v1.47.0/MeshCore-v1.47.0+74-b68551d-macos.zip, sha256 ca73d3c1abd99dfe357010cd1fa753f64297e89a1b14d089fe345352e7735cd9) — that build carries the previous engine and does not crash for the reporter. Everything added in 1.48–1.50 is lost, of course.

Suggested fix / ask

  • Bump the bundled Flutter engine of the macOS/desktop builds. The faulting code is the engine's macOS embedder view, reached from -[_NSTrackingAreaAKManager _updateActiveTrackingAreasForWindowLocation:modifierFlags:] → ___collectTrackingAreasForTargetAndWinLoc_block_invoke; the app cannot fix this in Dart.
  • If the current engine is still affected, this is worth an upstream flutter/flutter bug. I grepped open macOS issues for the tracking-area symbols and the engineCallbackOnPlatformMessage nil-handler crash (#193097) is not the same path, so I did not find this reported yet. Happy to file/attach the full .ips upstream if you prefer to forward it instead.
  • I can retest any preview build and report the engine uuid + whether the crash is gone.

Appendix — full crash report

Redacted only for machine identifiers (deviceIdentifierForVendor, crashReporterKey, bootSessionUUID); everything technically relevant is untouched. Full .ips attached.

MeshCore 1.50.0 (78) — macOS 27.0 (26A428) — translated crash report 
------------------------------------
Translated Report (Full Report Below)
-------------------------------------
Process:             MeshCore [37863]
Path:                /Applications/MeshCore.app/Contents/MacOS/MeshCore
Identifier:          com.liamcottle.meshcore.macos
Version:             1.50.0 (78)
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           com.liamcottle.meshcore.macos
User ID:             501

Date/Time:           2026-09-25 23:27:21.2885 +0300
Launch Time:         2026-09-25 20:31:52.2732 +0300
Hardware Model:      Mac17,7
OS Version:          macOS 27.0 (26A428)
Release Type:        User

Crash Reporter Key:  REDACTED
Incident Identifier: 96B5CED2-4430-49DB-8244-43301C49CDF4

Time Awake Since Boot: 870000 seconds

System Integrity Protection: enabled

Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread

Exception Type:    EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0xffffffffffffffff
Exception Codes:   0x0000000000000001, 0xffffffffffffffff

Termination Reason:  Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [37863]


VM Region Info: 0xffffffffffffffff is not in any region.  
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      UNUSED SPACE AT END

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   FlutterMacOS                  	       0x103ac0490 0x102fa0000 + 11666576
1   FlutterMacOS                  	       0x103ac0474 0x102fa0000 + 11666548
2   FlutterMacOS                  	       0x102fd490c 0x102fa0000 + 215308
3   FlutterMacOS                  	       0x102fd4804 0x102fa0000 + 215044
4   AppKit                        	       0x19415061c ___collectTrackingAreasForTargetAndWinLoc_block_invoke + 172
5   CoreFoundation                	       0x18f505dec __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
6   CoreFoundation                	       0x18f505c98 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 388
7   AppKit                        	       0x19414928c -[_NSTrackingAreaAKManager _updateActiveTrackingAreasForWindowLocation:modifierFlags:] + 1196
8   AppKit                        	       0x19414c8a8 -[_NSTrackingAreaAKManager _mouseMoved:] + 344
9   AppKit                        	       0x19459d458 _routeMouseMovedEvent + 228
10  AppKit                        	       0x193beef38 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 560
11  AppKit                        	       0x193beeb70 -[NSWindow(NSEventRouting) sendEvent:] + 304
12  AppKit                        	       0x19433f654 routeMouseMovedEvent + 148
13  AppKit                        	       0x19433ec74 -[NSApplication(NSEventRouting) sendEvent:] + 984
14  AppKit                        	       0x193e64d48 -[NSApplication _handleEvent:] + 60
15  AppKit                        	       0x193abb95c -[NSApplication run] + 476
16  AppKit                        	       0x193a93c4c NSApplicationMain + 880
17  MeshCore                      	       0x100ece9d0 main + 36
18  dyld                          	       0x18f07be80 start + 6688

Thread 1:: com.apple.NSEventThread
0   libsystem_kernel.dylib        	       0x18f40cc20 mach_msg2_trap + 8
1   libsystem_kernel.dylib        	       0x18f41f8e0 mach_msg2_internal + 76
2   libsystem_kernel.dylib        	       0x18f415a28 mach_msg_overwrite + 480
3   libsystem_kernel.dylib        	       0x18f40cfac mach_msg + 24
4   CoreFoundation                	       0x18f512aec __CFRunLoopServiceMachPort + 160
5   CoreFoundation                	       0x18f511334 __CFRunLoopRun + 1172
6   CoreFoundation                	       0x18f5eb82c _CFRunLoopRunSpecificWithOptions + 536
7   AppKit                        	       0x193bec844 _NSEventThread + 184
8   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
9   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 2:: io.flutter.raster
0   FlutterMacOS                  	       0x103203970 0x102fa0000 + 2505072
1   FlutterMacOS                  	       0x103203864 0x102fa0000 + 2504804
2   FlutterMacOS                  	       0x1033636d4 0x102fa0000 + 3946196
3   FlutterMacOS                  	       0x103443d24 0x102fa0000 + 4865316
4   FlutterMacOS                  	       0x1033b6500 0x102fa0000 + 4285696
5   FlutterMacOS                  	       0x1033b4590 0x102fa0000 + 4277648
6   FlutterMacOS                  	       0x103438c9c 0x102fa0000 + 4820124
7   FlutterMacOS                  	       0x103438124 0x102fa0000 + 4817188
8   FlutterMacOS                  	       0x10343eac4 0x102fa0000 + 4844228
9   FlutterMacOS                  	       0x10343d91c 0x102fa0000 + 4839708
10  FlutterMacOS                  	       0x103435168 0x102fa0000 + 4804968
11  FlutterMacOS                  	       0x10334dd58 0x102fa0000 + 3857752
12  FlutterMacOS                  	       0x1033e6ab4 0x102fa0000 + 4483764
13  FlutterMacOS                  	       0x1033e851c 0x102fa0000 + 4490524
14  FlutterMacOS                  	       0x1033f8a28 0x102fa0000 + 4557352
15  FlutterMacOS                  	       0x103335130 0x102fa0000 + 3756336
16  FlutterMacOS                  	       0x103334bb0 0x102fa0000 + 3754928
17  FlutterMacOS                  	       0x10333550c 0x102fa0000 + 3757324
18  FlutterMacOS                  	       0x103111254 0x102fa0000 + 1512020
19  FlutterMacOS                  	       0x103938efc 0x102fa0000 + 10063612
20  FlutterMacOS                  	       0x10393abb0 0x102fa0000 + 10070960
21  FlutterMacOS                  	       0x10381f2a8 0x102fa0000 + 8909480
22  FlutterMacOS                  	       0x10381eb84 0x102fa0000 + 8907652
23  FlutterMacOS                  	       0x10381cf10 0x102fa0000 + 8900368
24  FlutterMacOS                  	       0x10381e0dc 0x102fa0000 + 8904924
25  FlutterMacOS                  	       0x103821768 0x102fa0000 + 8918888
26  FlutterMacOS                  	       0x10381d5b8 0x102fa0000 + 8902072
27  FlutterMacOS                  	       0x10381d1e4 0x102fa0000 + 8901092
28  FlutterMacOS                  	       0x1038416cc 0x102fa0000 + 9049804
29  FlutterMacOS                  	       0x103034428 0x102fa0000 + 607272
30  FlutterMacOS                  	       0x10303dcb4 0x102fa0000 + 646324
31  CoreFoundation                	       0x18f52c8cc __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 32
32  CoreFoundation                	       0x18f52c5c8 __CFRunLoopDoTimer + 1084
33  CoreFoundation                	       0x18f52c0d8 __CFRunLoopDoTimers + 280
34  CoreFoundation                	       0x18f5115dc __CFRunLoopRun + 1852
35  CoreFoundation                	       0x18f5eb82c _CFRunLoopRunSpecificWithOptions + 536
36  FlutterMacOS                  	       0x10303df18 0x102fa0000 + 646936
37  FlutterMacOS                  	       0x10303425c 0x102fa0000 + 606812
38  FlutterMacOS                  	       0x10303c564 0x102fa0000 + 640356
39  FlutterMacOS                  	       0x10303bfac 0x102fa0000 + 638892
40  libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
41  libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 3:: io.flutter.io
0   libsystem_kernel.dylib        	       0x18f40cc20 mach_msg2_trap + 8
1   libsystem_kernel.dylib        	       0x18f41f8e0 mach_msg2_internal + 76
2   libsystem_kernel.dylib        	       0x18f415a28 mach_msg_overwrite + 480
3   libsystem_kernel.dylib        	       0x18f40cfac mach_msg + 24
4   CoreFoundation                	       0x18f512aec __CFRunLoopServiceMachPort + 160
5   CoreFoundation                	       0x18f511334 __CFRunLoopRun + 1172
6   CoreFoundation                	       0x18f5eb82c _CFRunLoopRunSpecificWithOptions + 536
7   FlutterMacOS                  	       0x10303df18 0x102fa0000 + 646936
8   FlutterMacOS                  	       0x10303425c 0x102fa0000 + 606812
9   FlutterMacOS                  	       0x10303c564 0x102fa0000 + 640356
10  FlutterMacOS                  	       0x10303bfac 0x102fa0000 + 638892
11  libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
12  libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 4:: io.worker.1
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521d0 _pthread_cond_wait + 980
2   FlutterMacOS                  	       0x102fea9b4 0x102fa0000 + 305588
3   FlutterMacOS                  	       0x10302ecfc 0x102fa0000 + 584956
4   FlutterMacOS                  	       0x10302f6b8 0x102fa0000 + 587448
5   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
6   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 5:: io.worker.2
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521d0 _pthread_cond_wait + 980
2   FlutterMacOS                  	       0x102fea9b4 0x102fa0000 + 305588
3   FlutterMacOS                  	       0x10302ecfc 0x102fa0000 + 584956
4   FlutterMacOS                  	       0x10302f6b8 0x102fa0000 + 587448
5   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
6   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 6:: io.worker.3
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521d0 _pthread_cond_wait + 980
2   FlutterMacOS                  	       0x102fea9b4 0x102fa0000 + 305588
3   FlutterMacOS                  	       0x10302ecfc 0x102fa0000 + 584956
4   FlutterMacOS                  	       0x10302f6b8 0x102fa0000 + 587448
5   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
6   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 7:: io.worker.4
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521d0 _pthread_cond_wait + 980
2   FlutterMacOS                  	       0x102fea9b4 0x102fa0000 + 305588
3   FlutterMacOS                  	       0x10302ecfc 0x102fa0000 + 584956
4   FlutterMacOS                  	       0x10302f6b8 0x102fa0000 + 587448
5   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
6   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 8:: dart:io EventHandler
0   libsystem_kernel.dylib        	       0x18f412fcc kevent + 8
1   FlutterMacOS                  	       0x1038bf10c 0x102fa0000 + 9564428
2   FlutterMacOS                  	       0x1038e6a00 0x102fa0000 + 9726464
3   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
4   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 9:

Thread 10:: DartWorker
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521fc _pthread_cond_wait + 1024
2   FlutterMacOS                  	       0x10394c87c 0x102fa0000 + 10143868
3   FlutterMacOS                  	       0x10398f524 0x102fa0000 + 10417444
4   FlutterMacOS                  	       0x103a39a4c 0x102fa0000 + 11115084
5   FlutterMacOS                  	       0x103a39d4c 0x102fa0000 + 11115852
6   FlutterMacOS                  	       0x103a14a70 0x102fa0000 + 10963568
7   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
8   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 11:

Thread 12:

Thread 13:: DartWorker
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521fc _pthread_cond_wait + 1024
2   FlutterMacOS                  	       0x10394c87c 0x102fa0000 + 10143868
3   FlutterMacOS                  	       0x103a39bcc 0x102fa0000 + 11115468
4   FlutterMacOS                  	       0x103a39d4c 0x102fa0000 + 11115852
5   FlutterMacOS                  	       0x103a14a70 0x102fa0000 + 10963568
6   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
7   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 14:: DartWorker
0   FlutterMacOS                  	       0x103a16bc0 0x102fa0000 + 10972096
1   FlutterMacOS                  	       0x103a4f9dc 0x102fa0000 + 11205084
2   FlutterMacOS                  	       0x103a4f698 0x102fa0000 + 11204248
3   FlutterMacOS                  	       0x103a39ad8 0x102fa0000 + 11115224
4   FlutterMacOS                  	       0x103a39d4c 0x102fa0000 + 11115852
5   FlutterMacOS                  	       0x103a14a70 0x102fa0000 + 10963568
6   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
7   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8

Thread 15:: CVDisplayLink
0   libsystem_kernel.dylib        	       0x18f41050c __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x18f4521fc _pthread_cond_wait + 1024
2   CoreVideo                     	       0x19a49eba4 CVDisplayLink::waitUntil(unsigned long long) + 332
3   CoreVideo                     	       0x19a49dc88 CVDisplayLink::runIOThread() + 452
4   libsystem_pthread.dylib       	       0x18f451d00 _pthread_start + 136
5   libsystem_pthread.dylib       	       0x18f44ccec thread_start + 8


Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000007573843c00   x2: 0x000000016ef325c7   x3: 0x0000000000000001
    x4: 0x0000000000000001   x5: 0x0000000000000400   x6: 0x0000007572ef0000   x7: 0xffffffffb00007ff
    x8: 0xffffffffffffffff   x9: 0xffffff8a8c7bc3ff  x10: 0x0000000000000001  x11: 0x0000007573be8148
   x12: 0x0000000000000018  x13: 0x0000007573a49170  x14: 0x0300000103d17d6f  x15: 0x00000001f4fd48d0
   x16: 0x00000001f4fd48d0  x17: 0x000000018efd5e48  x18: 0x0000000000000000  x19: 0x000000016ef325c7
   x20: 0x0000007573843c00  x21: 0x0000000000000001  x22: 0x000000757372fc00  x23: 0x0000000000000001
   x24: 0x0000000000000000  x25: 0x0000000000000000  x26: 0x0000000000000001  x27: 0x0000000000000001
   x28: 0x00000075733c0820   fp: 0x000000016ef32590   lr: 0x0000000103ac0474
    sp: 0x000000016ef324c0   pc: 0x0000000103ac0490 cpsr: 0x80000000
   far: 0xffffffffffffffff  esr: 0x92000004 (Data Abort) byte read Translation fault

Binary Images:
       0x100ecc000 -        0x100f6bfff com.liamcottle.meshcore.macos (1.50.0) <a1a65e84-b233-3bef-b7c3-c842117a0b56> /Applications/MeshCore.app/Contents/MacOS/MeshCore
       0x101098000 -        0x1010a3fff org.cocoapods.geolocator-apple (1.2.0) <2384ef1d-d6dc-3860-835d-1837b2f06ab5> /Applications/MeshCore.app/Contents/Frameworks/geolocator_apple.framework/Versions/A/geolocator_apple
       0x1010bc000 -        0x1010c7fff org.cocoapods.libserialport-plus (0.0.1) <c7b430d8-405d-3e41-8096-c2e77e2bf97c> /Applications/MeshCore.app/Contents/Frameworks/libserialport_plus.framework/Versions/A/libserialport_plus
       0x102fa0000 -        0x103cabfff io.flutter.flutter-macos (1.0) <4c4c4491-5555-3144-a13d-98496080a6b4> /Applications/MeshCore.app/Contents/Frameworks/FlutterMacOS.framework/Versions/A/FlutterMacOS
       0x102c30000 -        0x102c3bfff libobjc-trampolines.dylib (*) <9ef9e491-f3d3-322c-918a-559d3b858d9a> /usr/lib/libobjc-trampolines.dylib
       0x112054000 -        0x1131e3fff io.flutter.flutter.app (1.0) <b4485c2e-90e4-8cfc-38e6-cc8d0059d7c2> /Applications/MeshCore.app/Contents/Frameworks/App.framework/Versions/A/App
       0x193a8f000 -        0x1950d150b com.apple.AppKit (6.9) <2688afbc-5c39-3132-bcf5-8d00d32d7615> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
       0x18f491000 -        0x18f921e9f com.apple.CoreFoundation (6.9) <727e905e-f344-3823-8e13-e7a096388321> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
       0x18f04a000 -        0x18f1096e3 dyld (*) <d341ddcb-7969-3a9c-8e03-0cf4751398a9> /usr/lib/dyld
               0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
       0x18efc8000 -        0x18f0175f7 libobjc.A.dylib (*) <c0680df6-9900-3c29-a071-95a031686ef8> /usr/lib/libobjc.A.dylib
       0x18f40c000 -        0x18f44a9ab libsystem_kernel.dylib (*) <f63bf418-8f75-34a4-aaf1-8caf2b9b6a05> /usr/lib/system/libsystem_kernel.dylib
       0x18f44b000 -        0x18f45791b libsystem_pthread.dylib (*) <5a1828c3-cbc2-3b85-bd07-c8ed10021a41> /usr/lib/system/libsystem_pthread.dylib
       0x18f239000 -        0x18f28ec5f libsystem_malloc.dylib (*) <2339cb57-fe5a-3154-a206-a76059c749eb> /usr/lib/system/libsystem_malloc.dylib
       0x19a49b000 -        0x19a53fbc3 com.apple.CoreVideo (1.8) <2dd9bdac-2339-34e3-b1d4-3c6680f85485> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=3.0G resident=0K(0%) swapped_out_or_unallocated=3.0G(100%)
Writable regions: Total=196.2M written=769K(0%) resident=769K(0%) swapped_out=0K(0%) unallocated=195.4M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Accelerate Framework               128K        1 
Activity Tracing                   256K        1 
AttributeGraph Data               1024K        1 
ColorSync                           16K        1 
CoreAnimation                      896K       54 
CoreGraphics                        48K        3 
CoreUI Image Data                  928K        7 
Foundation                          48K        2 
Guard                            385.0G        1 
Image IO                           992K       62 
Malloc                            78.6M       31 
Malloc Guard Page                 3760K        4 
OS Alloc Once                       48K        2 
SQLite Page Cache                  512K        4 
Stack                             21.1M       20 
Stack Guard                       56.2M       16 
Untagged                          92.9M      213 
__AUTH                            6631K      713 
__AUTH_CONST                     100.0M     1066 
__CTF                               824        1 
__DATA                            41.1M     1077 
__DATA_CONST                      37.3M     1076 
__DATA_DIRTY                      14.7M      951 
__FONT_DATA                        2352        1 
__LINKEDIT                         1.6G        7 
__OBJC_RO                        118.0M        1 
__OBJC_RW                         2735K        1 
__TEXT                             1.4G     1166 
__TPRO_CONST                       132K        4 
mapped file                      460.4M       36 
page table in kernel               769K        1 
shared memory                     1440K       18 
===========                     =======  ======= 
TOTAL                            389.0G     6542

Related, in case it is the same class of problem: #2921 (Mac client), #3177 (Android cursor). Engine detail of #1756 may be relevant as precedent.

Activity

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