MAUI IOS App crashes on launch during Apple App Review (iOS 18.0 – iPad Air 5th Generation) [closed]

This may not be an issue but rather a request for help with troubleshooting. Our app, version 1.3.0 (Bundle ID: com.kremed.swap), crashes on launch during Apple’s App Review process on an iPad Air (5th generation) running iOS 18.0. The crash happens immediately after launch, but we have not encountered any issues during testing on all virtual iPad devices on macOS. The app works perfectly in these virtual environments, and we are unable to reproduce the crash locally.

I believe this is not a bug in the .NET MAUI SDK, as everything functions smoothly in our local environment. However, we are unsure where exactly the issue lies, and any assistance in identifying the problem would be appreciated.

Crash Report Details:

  • Device: iPad Air (5th generation)
  • OS Version: iOS 18.0 (Build: 22A3354)
  • App Version: 1.3.0
  • Crash Type: Memory allocation failure (MALLOC)

Relevant Logs:

  • Process Role: Foreground
  • Bug Type: 309 (App Crash)
  • Error Code: 0x8badf00d (indicating a watchdog termination caused by a timeout or deadlock)

Steps to Reproduce:

  • Launch the app on an iPad Air (5th generation) running iOS 18.0.
  • Observe that the app crashes immediately on launch.

Additional Information:

  • The app works perfectly on all virtual iPad devices tested on macOS, and no crashes are experienced locally. We have been unable to determine the exact cause of the crash based on the logs provided by Apple. Any help in resolving this issue would be greatly appreciated.

Logs: The detailed crash logs are attached below. The issue appears to be related to memory allocation or threading, with the crash linked to a MALLOC guard page and triggered on the main thread (tid_103).

Next Steps:

  • Investigate memory usage during app launch.
  • Check if the issue is related to a heavy initial load or memory handling.
  • Fully symbolicate the crash logs for more detailed information.
{
  "app_name": "Mobile",
  "timestamp": "2024-09-17 07:49:09.00 +0100",
  "app_version": "1.3.0",
  "slice_uuid": "f794d7c8-f3ae-3948-b8a0-ddc919c0630a",
  "adam_id": "6670712232",
  "build_version": "4",
  "platform": 2,
  "bundleID": "com.XXXXXXX.XXXXXXX",
  "share_with_app_devs": 0,
  "is_first_party": 0,
  "bug_type": "309",
  "os_version": "iPhone OS 18.0 (22A3354)",
  "roots_installed": 0,
  "name": "Mobile",
  "incident_id": "XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX"
}

   {
  "uptime" : 180000,
  "procRole" : "Foreground",
  "version" : 2,
  "userID" : 501,
  "deployVersion" : 210,
  "modelCode" : "iPad13,16",
  "coalitionID" : 2041,
  "osVersion" : {
    "isEmbedded" : true,
    "train" : "iPhone OS 18.0",
    "releaseType" : "User",
    "build" : "22A3354"
  }

    "captureTime" : "2024-09-17 07:49:08.6124 +0100",
  "codeSigningMonitor" : 1,
  "incident" : "5BD839DF-A3CB-4AD6-BDDD-AA3EFA90C25E",
  "pid" : 4242,
  "translated" : false,
  "cpuType" : "ARM-64",
  "roots_installed" : 0,
  "bug_type" : "309",
  "procLaunch" : "2024-09-17 07:49:08.5041 +0100",
  "procStartAbsTime" : 4373920923659,
  "procExitAbsTime" : 4373923514704,
  "procName" : "Mobile",
  "procPath" : "/private/var/containers/Bundle/Application/13AC6C6A-2402-4E71-8F68-B5796B2C38F8/Mobile.app/Mobile",
  "bundleInfo" : {"CFBundleShortVersionString":"1.3.0","CFBundleVersion":"4","CFBundleIdentifier":"com.kremed.swap","DTAppStoreToolsBuild":"16A242b"},
  "storeInfo" : {"itemID":"6670712232","deviceIdentifierForVendor":"4DEF3FA2-CEA2-48A0-BF85-0A3C75AEFA95","thirdParty":true,"softwareVersionExternalIdentifier":"868838636"},
  "parentProc" : "launchd",
  "parentPid" : 1,
  "coalitionName" : "com.kremed.swap",
  "crashReporterKey" : "5f132ce32b57730df579278e80c415a7dc2e2637",
  "wasUnlockedSinceBoot" : 1,
  "isLocked" : 0,
  "codeSigningID" : "com.kremed.swap",
  "codeSigningTeamID" : "6VR64ATQ86",
  "codeSigningFlags" : 570450689,
  "codeSigningValidationCategory" : 4,
  "codeSigningTrustLevel" : 7,
  "instructionByteStream" : {"beforePC":"fyMD1f17v6n9AwCRPOz/l78DAJH9e8Go/w9f1sADX9YQKYDSARAA1A==","atPC":"AwEAVH8jA9X9e7+p/QMAkTHs/5e/AwCR/XvBqP8PX9bAA1/WECeA0g=="},
  "bootSessionUUID" : "5D4BF9B6-8090-4EA5-A250-DB773761BE14",
  "exception" : {"codes":"0x0000000000000000, 0x0000000000000000","rawCodes":[0,0],"type":"EXC_CRASH","signal":"SIGABRT"},
  "termination" : {"flags":0,"code":6,"namespace":"SIGNAL","indicator":"Abort trap: 6","byProc":"Mobile","byPid":4242},
  "asi" : {"libsystem_c.dylib":["abort() called"]}


    "faultingThread" : 0,
  "threads" : [{"threadState":{"x":[{"value":0},{"value":0},{"value":0},{"value":0},{"value":18446744071983148531},{"value":8},{"value":6137630336},{"value":6137628016},{"value":363057494707285490},{"value":363057501586535026},{"value":1023},{"value":6137628128},{"value":0},{"value":4339945096},{"value":7119442472,"symbolLocation":292,"symbol":"-[EKEvent _snoozeAlarm:withTimeIntervalFromNow:orTargetDate:pinsTriggerToStartDate:]"},{"value":7119442724,"symbolLocation":12,"symbol":"-[EKEvent propertiesThatCanBeModifiedOnReadOnlyCalendars]"},{"value":328},{"value":8221433728,"symbolLocation":0,"symbol":"_main_thread"},{"value":0},{"value":6},{"value":259},{"value":8221433952,"symbolLocation":224,"symbol":"_main_thread"},{"value":16},{"value":30960},{"value":4418230484},{"value":104},{"value":1144},{"value":4415333048},{"value":12918965472}],"flavor":"ARM_THREAD_STATE64","lr":{"value":8823205624},"cpsr":{"value":1073745920},"fp":{"value":6137630352},"sp":{"value":6137630320},"esr":{"value":1442840704,"description":" Address size fault"},"pc":{"value":7895888500,"matchesCrashFrame":1},"far":{"value":0}},"id":1772644,"triggered":true,"name":"tid_103","queue":"com.apple.main-thread","frames":[{"imageOffset":49780,"symbol":"__pthread_kill","symbolLocation":8,"imageIndex":5},{"imageOffset":32504,"symbol":"pthread_kill","symbolLocation":268,"imageIndex":6},{"imageOffset":490200,"symbol":"abort","symbolLocation":128,"imageIndex":7},{"imageOffset":78430000,"imageIndex":0},{"imageOffset":77869552,"imageIndex":0},{"imageOffset":6908,"symbol":"_sigtramp","symbolLocation":56,"imageIndex":8},{"imageOffset":32504,"symbol":"pthread_kill","symbolLocation":268,"imageIndex":6},{"imageOffset":490200,"symbol":"abort","symbolLocation":128,"imageIndex":7},{"imageOffset":76562252,"imageIndex":0},{"imageOffset":76516776,"imageIndex":0},{"imageOffset":76517104,"imageIndex":0},{"imageOffset":77709836,"imageIndex":0},{"imageOffset":76917672,"imageIndex":0},{"imageOffset":76916424,"imageIndex":0},{"imageOffset":76923728,"imageIndex":0},{"imageOffset":74992872,"imageIndex":0},{"imageOffset":76924412,"imageIndex":0},{"imageOffset":76914212,"imageIndex":0},{"imageOffset":77750584,"imageIndex":0},{"imageOffset":77709732,"imageIndex":0},{"imageOffset":77729004,"imageIndex":0},{"imageOffset":77657768,"imageIndex":0},{"imageOffset":77675564,"imageIndex":0},{"imageOffset":77313456,"imageIndex":0},{"imageOffset":77037416,"imageIndex":0},{"imageOffset":77036780,"imageIndex":0},{"imageOffset":76900064,"imageIndex":0},{"imageOffset":77673676,"imageIndex":0},{"imageOffset":77698536,"imageIndex":0},{"imageOffset":74990064,"imageIndex":0},{"imageOffset":74993916,"imageIndex":0},{"imageOffset":78128696,"imageIndex":0},{"imageOffset":212276,"symbol":"start","symbolLocation":2724,"imageIndex":9}]},{"id":1772647,"frames":[{"imageOffset":5248,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":6}],"threadState":{"x":[{"value":6138769408},{"value":4871},{"value":6138232832},{"value":0},{"value":409604},{"value":18446744073709551615},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0},{"value":0}],"flavor":"ARM_THREAD_STATE64","lr":{"value":0},"cpsr":{"value":4096},"fp":{"value":0},"sp":{"value":6138769408},"esr":{"value":1442840704,"description":" Address size fault"},"pc":{"value":8823178368},"far":{"value":0}}},{"id":1772648,"name":"SGen worker","threadState":{"x":[{"value":260},{"value":0},{"value":0},{"value":0},{"value":0},{"value":161},{"value":0},{"value":0},{"value":6138195624},{"value":0},{"value":0},{"value":2},{"value":2},{"value":0},{"value":0},{"value":0},{"value":305},{"value":6138195968},{"value":0},{"value":4418192408},{"value":4418192312},{"value":6138196192},{"value":0},{"value":0},{"value":0},{"value":1},{"value":256},{"value":0},{"value":0}],"flavor":"ARM_THREAD_STATE64","lr":{"value":8823188048},"cpsr":{"value":1610616832},"fp":{"value":6138195744},"sp":{"value":6138195600},"esr":{"value":1442840704,"description":" Address size fault"},"pc":{"value":7895867440},"far":{"value":0}},"frames":[{"imageOffset":28720,"symbol":"__psynch_cvwait","symbolLocation":8,"imageIndex":5},{"imageOffset":14928,"symbol":"_pthread_cond_wait","symbolLocation":1204,"imageIndex":6},{"imageOffset":76888500,"imageIndex":0},{"imageOffset":25468,"symbol":"_pthread_start","symbolLocation":136,"imageIndex":6},{"imageOffset":5268,"symbol":"thread_start","symbolLocation":8,"imageIndex":6}]}]



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"vmSummary" : "ReadOnly portion of Libraries: Total=1.4G resident=0K(0%) swapped_out_or_unallocated=1.4G(100%)nWritable regions: Total=557.5M written=321K(0%) resident=321K(0%) swapped_out=0K(0%) unallocated=557.2M(100%)nn                                VIRTUAL   REGION nREGION TYPE                        SIZE    COUNT (non-coalesced) n===========                     =======  ======= nActivity Tracing                   256K        1 nColorSync                           16K        1 nKernel Alloc Once                   32K        1 nMALLOC                           534.9M       12 nMALLOC guard page                   32K        2 nSTACK GUARD                         48K        3 nStack                             2096K        3 nVM_ALLOCATE                       1552K       13 nVM_ALLOCATE (reserved)            16.0M        1         reserved VM address space (unallocated)n__AUTH                            4030K      405 n__AUTH_CONST                      78.2M      934 n__CTF                               824        1 n__DATA                            27.5M      897 n__DATA_CONST                      26.7M      941 n__DATA_DIRTY                      8053K      857 n__FONT_DATA                        2352        1 n__INFO_FILTER                         8        1 n__LINKEDIT                       192.2M        6 n__OBJC_RW                         2919K        1 n__TEXT                             1.2G      956 n__TPRO_CONST                       272K        2 nmapped file                       32.5M      126 nowned unmapped memory               16K        1 npage table in kernel               321K        1 nshared memory                       48K        2 n===========                     =======  ======= nTOTAL                              2.1G     5169 nTOTAL, minus reserved VM space     2.1G     5169 n",
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2

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Trang chủ Giới thiệu Sinh nhật bé trai Sinh nhật bé gái Tổ chức sự kiện Biểu diễn giải trí Dịch vụ khác Trang trí tiệc cưới Tổ chức khai trương Tư vấn dịch vụ Thư viện ảnh Tin tức - sự kiện Liên hệ Chú hề sinh nhật Trang trí YEAR END PARTY công ty Trang trí tất niên cuối năm Trang trí tất niên xu hướng mới nhất Trang trí sinh nhật bé trai Hải Đăng Trang trí sinh nhật bé Khánh Vân Trang trí sinh nhật Bích Ngân Trang trí sinh nhật bé Thanh Trang Thuê ông già Noel phát quà Biểu diễn xiếc khỉ Xiếc quay đĩa
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