🐞 Loop crashes quietly

[yusrmuttaqien]

Bug Description

Loop seems to randomly crashes, noticed only when tried to arranging windows and Loop didn't respond to the keybinds

Affected Scope

Crash / Freeze

Steps to Reproduce

1. Launch Loop
2. Wait for undefined time
3. After sometimes, wanted to arranging window, Loop already crashes

Reproducibility

Always

Expected vs Actual Behavior

Loop should be stable and always running, I'm not apply any kind of resource limiter to Loop

Screen Recordings / Screenshots

No response

Severity

Critical (major functionality broken)

macOS Version

Tahoe 26.4

Loop Version

1.4.2 (1693)

Did You Try the Development Build?

No

Additional Context

Log from Console:

---

Translated Report (Full Report Below)

Process: Loop [29225]
Path: /Applications/Loop.app/Contents/MacOS/Loop
Identifier: com.MrKai77.Loop
Version: 1.4.2 (1693)
Code Type: ARM-64 (Native)
Role: Default
Parent Process: launchd [1]
Coalition: com.MrKai77.Loop [3366]
User ID: 501

Date/Time: 2026-05-05 17:43:53.4038 +0700
Launch Time: 2026-05-05 07:38:21.0681 +0700
Hardware Model: MacBookAir10,1
OS Version: macOS 26.4 (25E246)
Release Type: User

Crash Reporter Key: 9E9FA28A-EB47-F241-A873-B945113E5880
Incident Identifier: EBD4CA17-EF7E-450E-9C99-17B10B5F7C93

Sleep/Wake UUID: DBEA9D5D-680D-4CAB-852D-EB557C499425

Time Awake Since Boot: 48000 seconds
Time Since Wake: 11873 seconds

System Integrity Protection: enabled

Triggered by Thread: 5, Dispatch Queue: com.apple.root.user-initiated-qos.cooperative

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x8000000000000010 -> 0x0000000000000010 (possible pointer authentication failure)
Exception Codes: 0x0000000000000001, 0x8000000000000010

Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [29225]

VM Region Info: 0x10 is not in any region. Bytes before following region: 4367187952
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 1044e0000-104848000 [ 3488K] r-x/r-x SM=COW /Applications/Loop.app/Contents/MacOS/Loop

Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x188edbc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x188eee574 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x188ee49c0 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x188edbfc0 mach_msg + 24
4 SkyLight 0x18f924874 __SLSSetFrontProcessWithInfo_block_invoke + 204
5 SkyLight 0x18faae39c CGSPropertyListPerformWithSerializedBytes + 88
6 SkyLight 0x18f924750 SLSSetFrontProcessWithInfo + 524
7 AppKit 0x18e295590 -[NSRunningApplication activateWithOptions:] + 632
8 Loop 0x10463150c 0x1044e0000 + 1381644
9 Loop 0x1045c02a0 0x1044e0000 + 918176
10 Loop 0x1044e4995 0x1044e0000 + 18837
11 Loop 0x104605c65 0x1044e0000 + 1203301
12 Loop 0x1044e4995 0x1044e0000 + 18837
13 libswift_Concurrency.dylib 0x28cfeeec5 completeTaskWithClosure(swift::AsyncContext*, swift::SwiftError*) + 1

Thread 1:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x188edbc34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x188eee574 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x188ee49c0 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x188edbfc0 mach_msg + 24
4 SkyLight 0x18f70c920 CGSSnarfAndDispatchDatagrams + 168
5 SkyLight 0x18f88541c SLSGetNextEventRecordInternal + 296
6 SkyLight 0x18f7ff7c0 SLEventCreateNextEvent + 20
7 HIToolbox 0x195daaecc PullEventsFromWindowServerOnConnection(unsigned int, unsigned char, __CFMachPortBoost*) + 80
8 HIToolbox 0x195da8248 MessageHandler(__CFMachPort*, void*, long, void*) + 60
9 CoreFoundation 0x189007e14 __CFMachPortPerform + 240
10 CoreFoundation 0x188fdd138 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 60
11 CoreFoundation 0x188fdd060 __CFRunLoopDoSource1 + 504
12 CoreFoundation 0x188fdba28 __CFRunLoopRun + 2168
13 CoreFoundation 0x1890adbe0 _CFRunLoopRunSpecificWithOptions + 532
14 AppKit 0x18d528c64 _NSEventThread + 184
15 libsystem_pthread.dylib 0x188f1fc58 _pthread_start + 136
16 libsystem_pthread.dylib 0x188f1ac1c thread_start + 8

Thread 2:

Thread 3:

Thread 4:

Thread 5 Crashed:: Dispatch queue: com.apple.root.user-initiated-qos.cooperative
0 Loop 0x104653468 0x1044e0000 + 1520744
1 Loop 0x104653464 0x1044e0000 + 1520740
2 Loop 0x104632d7c 0x1044e0000 + 1387900
3 Loop 0x1044e4995 0x1044e0000 + 18837
4 libswift_Concurrency.dylib 0x28cfeeec5 completeTaskWithClosure(swift::AsyncContext*, swift::SwiftError*) + 1

Thread 6:: Dispatch queue: com.apple.root.user-initiated-qos.cooperative
0 Loop 0x1045d60d0 0x1044e0000 + 1007824
1 Loop 0x1046534fc 0x1044e0000 + 1520892
2 Loop 0x104632d7c 0x1044e0000 + 1387900
3 Loop 0x1044e4995 0x1044e0000 + 18837
4 libswift_Concurrency.dylib 0x28cfeeec5 completeTaskWithClosure(swift::AsyncContext*, swift::SwiftError*) + 1

Thread 7:

Thread 8:

Thread 9:

Thread 5 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000001 x1: 0x000000016bb4acd8 x2: 0x0000000104653464 x3: 0x0000000104884ca0
x4: 0x0000000000000020 x5: 0x0000000000000000 x6: 0x0000000000000001 x7: 0x0000000000000000
x8: 0xa79708a282210030 x9: 0xa79708a282210030 x10: 0x00000009ef473c72 x11: 0x000000000000001f
x12: 0x0000000000000015 x13: 0x0000000ae84d7b40 x14: 0x030000010486f1e9 x15: 0x000000010486f1e8
x16: 0x000000019c5aebd0 x17: 0x0000000000000004 x18: 0x0000000000000000 x19: 0x0000000104884ca0
x20: 0x8000000000000000 x21: 0x0000000ae907e440 x22: 0x0000000000000a43 x23: 0x0000000104633924
x24: 0x000000010486f1e8 x25: 0x000000010487b000 x26: 0x000000010487b000 x27: 0x00000002a1af2020
x28: 0x0000000000000000 fp: 0x000000016bb4ad80 lr: 0x0000000104653464
sp: 0x000000016bb4acd0 pc: 0x0000000104653468 cpsr: 0x60001000
far: 0x8000000000000010 esr: 0x92000006 (Data Abort) byte read Translation fault

Binary Images:
0x1044e0000 - 0x104847fff com.MrKai77.Loop (1.4.2) /Applications/Loop.app/Contents/MacOS/Loop
0x104c44000 - 0x104c4ffff libobjc-trampolines.dylib () /usr/lib/libobjc-trampolines.dylib
0x118904000 - 0x11908ffff com.apple.AGXMetal13-3 (350.38) <3ba9342a-9728-3cc7-9881-ea09be475f28> /System/Library/Extensions/AGXMetal13_3.bundle/Contents/MacOS/AGXMetal13_3
0x188edb000 - 0x188f1828f libsystem_kernel.dylib () <51565b39-f595-3e96-a217-fef29815057a> /usr/lib/system/libsystem_kernel.dylib
0x18f702000 - 0x18fcb6b5f com.apple.SkyLight (1.600.0) /System/Library/PrivateFrameworks/SkyLight.framework/Versions/A/SkyLight
0x18d3ce000 - 0x18eaf0abf com.apple.AppKit (6.9) <59e23bd5-d01e-305a-b96f-a5790356049a> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
0x28cfe2000 - 0x28d06d095 libswift_Concurrency.dylib () <02634765-cb69-3c2b-9cce-10103cbea22a> /usr/lib/swift/libswift_Concurrency.dylib
0x0 - 0xffffffffffffffff ??? () <00000000-0000-0000-0000-000000000000> ???
0x195cf3000 - 0x195fee05f com.apple.HIToolbox (2.1.1) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
0x188f5f000 - 0x1894bcc5f com.apple.CoreFoundation (6.9) <04941709-2330-3bf8-9213-6d33964db448> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x188f19000 - 0x188f25b3b libsystem_pthread.dylib () /usr/lib/system/libsystem_pthread.dylib
0x19c5ab000 - 0x19cb4c93f libswiftCore.dylib () /usr/lib/swift/libswiftCore.dylib

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=1.8G resident=0K(0%) swapped_out_or_unallocated=1.8G(100%)
Writable regions: Total=254.2M written=770K(0%) resident=642K(0%) swapped_out=128K(0%) unallocated=253.5M(100%)

                            VIRTUAL   REGION 

REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Accelerate framework 128K 1
Activity Tracing 256K 1
AttributeGraph Data 1024K 1
CG image 208K 5
ColorSync 64K 4
CoreAnimation 480K 30
CoreGraphics 32K 2
CoreServices 624K 2
CoreUI image data 5120K 17
Foundation 48K 2
Kernel Alloc Once 32K 1
MALLOC 153.8M 76
MALLOC guard page 3552K 4
Memory Tag 22 64.0M 1
SQLite page cache 384K 3
STACK GUARD 56.2M 10
Stack 12.8M 10
VM_ALLOCATE 12.3M 13
__AUTH 6092K 643
__AUTH_CONST 90.2M 1033
__CTF 824 1
__DATA 34.8M 982
__DATA_CONST 34.8M 1040
__DATA_DIRTY 8466K 889
__FONT_DATA 2352 1
__LINKEDIT 575.1M 4
__OBJC_RO 79.1M 1
__OBJC_RW 2597K 1
__TEXT 1.2G 1063
__TPRO_CONST 128K 2
mapped file 290.0M 54
page table in kernel 642K 1
shared memory 9056K 16
=========== ======= =======
TOTAL 2.6G 5914

---

Full Report

{"app_name":"Loop","timestamp":"2026-05-05 17:43:59.00 +0700","app_version":"1.4.2","slice_uuid":"fab19e57-cbf5-36af-bc8f-bd9329dc4545","build_version":"1693","platform":1,"bundleID":"com.MrKai77.Loop","share_with_app_devs":0,"is_first_party":0,"bug_type":"309","os_version":"macOS 26.4 (25E246)","roots_installed":0,"name":"Loop","incident_id":"EBD4CA17-EF7E-450E-9C99-17B10B5F7C93"}
{
"uptime" : 48000,
"procRole" : "Default",
"version" : 2,
"userID" : 501,
"deployVersion" : 210,
"modelCode" : "MacBookAir10,1",
"coalitionID" : 3366,
"osVersion" : {
"train" : "macOS 26.4",
"build" : "25E246",
"releaseType" : "User"
},
"captureTime" : "2026-05-05 17:43:53.4038 +0700",
"codeSigningMonitor" : 1,
"incident" : "EBD4CA17-EF7E-450E-9C99-17B10B5F7C93",
"pid" : 29225,
"translated" : false,
"cpuType" : "ARM-64",
"procLaunch" : "2026-05-05 07:38:21.0681 +0700",
"procStartAbsTime" : 332555820715,
"procExitAbsTime" : 1170319092691,
"procName" : "Loop",
"procPath" : "/Applications/Loop.app/Contents/MacOS/Loop",
"bundleInfo" : {"CFBundleShortVersionString":"1.4.2","CFBundleVersion":"1693","CFBundleIdentifier":"com.MrKai77.Loop"},
"storeInfo" : {"deviceIdentifierForVendor":"DE1E3C61-119A-5343-9F08-A1A36F0B7C48","thirdParty":true},
"parentProc" : "launchd",
"parentPid" : 1,
"coalitionName" : "com.MrKai77.Loop",
"crashReporterKey" : "9E9FA28A-EB47-F241-A873-B945113E5880",
"appleIntelligenceStatus" : {"state":"available"},
"developerMode" : 1,
"bootProgressRegister" : "0x2f000000",
"codeSigningID" : "com.MrKai77.Loop",
"codeSigningTeamID" : "5F967GYF84",
"codeSigningFlags" : 570520337,
"codeSigningValidationCategory" : 6,
"codeSigningTrustLevel" : 4294967295,
"codeSigningAuxiliaryInfo" : 0,
"instructionByteStream" : {"beforePC":"IQgAVHYaQLmTEQCwc4IykeEjAJHgAxOqAgSAUgMAgNJzbwWUdAJA+Q==","atPC":"iApA+egBALTgAxaqwQL7l4EBADaIHkD5FHlg+OAjAJG3bwWU4AMUqg=="},
"bootSessionUUID" : "6AA574FF-C68F-4B64-BCA7-53953B7B65B9",
"wakeTime" : 11873,
"sleepWakeUUID" : "DBEA9D5D-680D-4CAB-852D-EB557C499425",
"sip" : "enabled",
"vmRegionInfo" : "0x10 is not in any region. Bytes before following region: 4367187952\n REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 1044e0000-104848000 [ 3488K] r-x/r-x SM=COW /Applications/Loop.app/Contents/MacOS/Loop",
"exception" : {"codes":"0x0000000000000001, 0x8000000000000010","rawCodes":[1,-9223372036854775792],"type":"EXC_BAD_ACCESS","signal":"SIGSEGV","subtype":"KERN_INVALID_ADDRESS at 0x8000000000000010 -> 0x0000000000000010 (possible pointer authentication failure)"},
"termination" : {"flags":0,"code":11,"namespace":"SIGNAL","indicator":"Segmentation fault: 11","byProc":"exc handler","byPid":29225},
"vmregioninfo" : "0x10 is not in any region. Bytes before following region: 4367187952\n REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 1044e0000-104848000 [ 3488K] r-x/r-x SM=COW /Applications/Loop.app/Contents/MacOS/Loop",
"extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0},
"faultingThread" : 5,
"threads" : 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Final Checks

• My issue is written in English.
• My issue title is descriptive.
• This is a single bug (multiple bugs should be reported individually).
• I have looked to see if this is a duplicate of another bug report.
• I can help with further investigation.
• I can help with developing a fix for this issue.

[MrKai77]

Thank you for reporting this, @yusrmuttaqien. The crash log was very helpful :)
Would you be able to test this build and let me know whether Loop still crashes quietly?
Loop.zip