Hi All,
I have this weird issue where the app keeps crashing randomly. I had the client email me the device logs(https://www.b4x.com/android/forum/threads/tip-on-device-logs.156056/#content). Below is one from the logs. From the below crash log, and from doing some research online, I learned that the app is being killed by the OS for extensive CPU usage and that I could find the runaway code by symbolicating the crash report.
However, I was un-successful in symbolicating the crash log. So I built-in the KSCrash reporting and got the below 2 crash logs.
From the above 2 logs, gathered that the crash might have something to do with b4xcanvas. So, I went through the entire project looking for a B4xcanvas being initialized inside a loop or not being released after usage, but I found none like that.
One other step that I took hoping to solve the issue was to disable the UDP broadcast as the the exception type was [SIGPIPE], and as I understand happens when trying to access a socket that has been closed. Not sure whether this is the cause of the issue.
Anyway any help or insight on this will be very valuable to me. It is a cross platform app, the issue only persists for the iOS app. Have not been able to recreate the issue. Thanks.
I have this weird issue where the app keeps crashing randomly. I had the client email me the device logs(https://www.b4x.com/android/forum/threads/tip-on-device-logs.156056/#content). Below is one from the logs. From the below crash log, and from doing some research online, I learned that the app is being killed by the OS for extensive CPU usage and that I could find the runaway code by symbolicating the crash report.
AiPOSX_cpu_resource:
{"roots_installed":0,"app_name":"Ai-POSX","timestamp":"2024-12-12 10:20:06.00 +1000","app_version":"4.22","slice_uuid":"3C64164C-5334-35B7-92EB-1BF3D1BF4AC6","adam_id":"6469747360","build_version":"4.22","bundleID":"b4i.AiPOSX","duration_ms":"179193","is_first_party":0,"share_with_app_devs":0,"bug_type":"202","os_version":"iPhone OS 18.1.1 (22B91)","distributor_id":"com.apple.AppStore","name":"Ai-POSX","incident_id":"44308A0D-A500-4236-A695-40F597A235DE"}
Date/Time: 2024-12-12 10:17:05.298 +1000
End time: 2024-12-12 10:20:04.492 +1000
OS Version: iPhone OS 18.1.1 (Build 22B91)
Architecture: arm64e
Report Version: 53
Incident Identifier: 44308A0D-A500-4236-A695-40F597A235DE
Data Source: Microstackshots
Shared Cache: 5341F4EE-8AA5-3EE6-A94B-D088748566C5 slid base address 0x18faa0000, slide 0xfaa0000
Command: Ai-POSX
Path: /private/var/containers/Bundle/Application/C5A077D2-4843-45BA-8434-15CF5047F002/Ai-POSX.app/Ai-POSX
Identifier: b4i.AiPOSX
Version: 4.22 (4.22)
Adam ID: 6469747360
Is First Party: No
Beta Identifier: B6678C13-709E-4D2A-9AAE-3CBF70C91FE4
Resource Coalition: "b4i.AiPOSX"(2052)
Architecture: arm64
Parent: UNKNOWN [1]
PID: 3566
Event: cpu usage
Action taken: none
CPU: 90 seconds cpu time over 179 seconds (50% cpu average), exceeding limit of 50% cpu over 180 seconds
CPU limit: 90s
Limit duration: 180s
CPU used: 90s
CPU duration: 179s
Duration: 179.19s
Duration Sampled: 178.35s (event ends 0.70s after samples)
Steps: 157
Hardware model: iPad13,16
Active cpus: 8
HW page size: 16384
VM page size: 16384
Time Since Boot: 748557s
Time Awake Since Boot: 680130s
Time Since Wake: 5325s
Total CPU Time: 94.089s
Advisory levels: Battery -> 2, User -> 3, ThermalPressure -> 0, Combined -> 2
Free disk space: 30.67 GB/59.59 GB, low space threshold 150 MB
Vnodes Available: 58.10% (11621/20000, 10000 allocated, 10000 soft limit)
Preferred User Language: en-AU
Country Code: AU
Keyboards: en_AU QWERTY, emoji Emoji
OS Cryptex File Extents: 1
Heaviest stack for the target process:
144 ??? (dyld + 212680) [0x1b82a2ec8]
144 ??? (Ai-POSX + 32868) [0x1023fc064]
144 ??? (UIKitCore + 4724148) [0x1954c95b4]
144 ??? (UIKitCore + 4009648) [0x19541aeb0]
144 ??? (GraphicsServices + 4548) [0x1de8941c4]
144 ??? (CoreFoundation + 337968) [0x1928b4830]
140 ??? (CoreFoundation + 341056) [0x1928b5440]
140 ??? (CoreFoundation + 352772) [0x1928b8204]
140 ??? (libdispatch.dylib + 75260) [0x19a5c85fc]
140 ??? (libdispatch.dylib + 76020) [0x19a5c88f4]
140 ??? (libdispatch.dylib + 106756) [0x19a5d0104]
140 ??? (libdispatch.dylib + 111932) [0x19a5d153c]
140 ??? (libdispatch.dylib + 30080) [0x19a5bd580]
140 ??? (libdispatch.dylib + 16592) [0x19a5ba0d0]
140 ??? (Ai-POSX + 6360552) [0x102a04de8]
78 ??? (Ai-POSX + 1107704) [0x1025026f8]
78 ??? (Ai-POSX + 7069084) [0x102ab1d9c]
78 ??? (Ai-POSX + 6520772) [0x102a2bfc4]
78 ??? (Ai-POSX + 6522956) [0x102a2c84c]
76 ??? (UIKitCore + 695192) [0x1950f1b98]
76 ??? (CoreGraphics + 253448) [0x1948dee08]
74 ??? (CoreGraphics + 255132) [0x1948df49c]
74 ??? (CoreGraphics + 198936) [0x1948d1918]
74 ??? (CoreGraphics + 371692) [0x1948fbbec]
74 ??? (CoreGraphics + 382716) [0x1948fe6fc]
55 ??? (libsystem_platform.dylib + 8396) [0x21ab250cc]
Powerstats for: Ai-POSX [3566]
UUID: 3C64164C-5334-35B7-92EB-1BF3D1BF4AC6
Path: /private/var/containers/Bundle/Application/C5A077D2-4843-45BA-8434-15CF5047F002/Ai-POSX.app/Ai-POSX
Identifier: b4i.AiPOSX
Version: 4.22 (4.22)
Adam ID: 6469747360
Is First Party: No
Beta Identifier: B6678C13-709E-4D2A-9AAE-3CBF70C91FE4
Resource Coalition: 157 samples "b4i.AiPOSX"(2052)
Architecture: arm64
Parent: UNKNOWN [1]
UID: 501
Footprint: 207.75 MB
Start time: 2024-12-12 10:17:05.438 +1000
End time: 2024-12-12 10:20:03.791 +1000
Num samples: 157 (100%)
Num threads: 8
Primary state: 90 samples Frontmost App, Non-Suppressed, User mode, Effective Thread QoS User Interactive, Requested Thread QoS User Interactive, Override Thread QoS Unspecified, p-core
User Activity: 0 samples Idle, 157 samples Active
Power Source: 157 samples on Battery, 0 samples on AC
144 ??? (dyld + 212680) [0x1b82a2ec8]
144 ??? (Ai-POSX + 32868) [0x1023fc064]
144 ??? (UIKitCore + 4724148) [0x1954c95b4]
144 ??? (UIKitCore + 4009648) [0x19541aeb0]
144 ??? (GraphicsServices + 4548) [0x1de8941c4]
144 ??? (CoreFoundation + 337968) [0x1928b4830]
140 ??? (CoreFoundation + 341056) [0x1928b5440]
140 ??? (CoreFoundation + 352772) [0x1928b8204]
140 ??? (libdispatch.dylib + 75260) [0x19a5c85fc]
140 ??? (libdispatch.dylib + 76020) [0x19a5c88f4]
140 ??? (libdispatch.dylib + 106756) [0x19a5d0104]
140 ??? (libdispatch.dylib + 111932) [0x19a5d153c]
140 ??? (libdispatch.dylib + 30080) [0x19a5bd580]
140 ??? (libdispatch.dylib + 16592) [0x19a5ba0d0]
140 ??? (Ai-POSX + 6360552) [0x102a04de8]
78 ??? (Ai-POSX + 1107704) [0x1025026f8]
78 ??? (Ai-POSX + 7069084) [0x102ab1d9c]
78 ??? (Ai-POSX + 6520772) [0x102a2bfc4]
78 ??? (Ai-POSX + 6522956) [0x102a2c84c]
76 ??? (UIKitCore + 695192) [0x1950f1b98]
76 ??? (CoreGraphics + 253448) [0x1948dee08]
74 ??? (CoreGraphics + 255132) [0x1948df49c]
74 ??? (CoreGraphics + 198936) [0x1948d1918]
74 ??? (CoreGraphics + 371692) [0x1948fbbec]
74 ??? (CoreGraphics + 382716) [0x1948fe6fc]
55 ??? (libsystem_platform.dylib + 8396) [0x21ab250cc]
35 <Kernel mode>
10 ??? (libsystem_platform.dylib + 8364) [0x21ab250ac]
10 <Kernel mode>
6 ??? (libsystem_platform.dylib + 8420) [0x21ab250e4]
4 <Kernel mode>
2 ??? (libsystem_platform.dylib + 8416) [0x21ab250e0]
1 ??? (libsystem_platform.dylib + 8184) [0x21ab24ff8]
2 ??? (CoreGraphics + 255000) [0x1948df418]
1 ??? (CoreGraphics + 255388) [0x1948df59c]
1 ??? (CoreGraphics + 80448) [0x1948b4a40]
1 ??? (CoreGraphics + 80692) [0x1948b4b34]
......more
Binary Images:
0x1023f4000 - 0x102dcffff b4i.AiPOSX 4.22 (4.22) <3C64164C-5334-35B7-92EB-1BF3D1BF4AC6> /private/var/containers/Bundle/Application/C5A077D2-4843-45BA-8434-15CF5047F002/Ai-POSX.app/Ai-POSX
0x18fba0000 - 0x18fbf0d5f libobjc.A.dylib <1608892E-67DB-3F94-9FC2-91492B86C95F> /usr/lib/libobjc.A.dylib
0x1914a5000 - 0x1921b2fff Foundation <6D0212CC-3B9E-32C9-BE20-72989CE3ACB8> /System/Library/Frameworks/Foundation.framework/Foundation
0x192862000 - 0x192da4fff CoreFoundation <1532D3D8-9B3B-3F2F-B35F-55A20DDF411B> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x194313000 - 0x1946b8fff QuartzCore <D8E8E86D-85AC-3C90-B2E1-940235ECAA18> /System/Library/Frameworks/QuartzCore.framework/QuartzCore
0x1948a1000 - 0x194f92fff CoreGraphics <519DCABF-190B-3A02-B4A1-F90A0D16FE4C> /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics
0x195048000 - 0x196f1bfff UIKitCore <575E5140-FA6A-37C2-B00B-A4EACEDFDA53> /System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore
0x19a5b6000 - 0x19a5fbfff libdispatch.dylib <7DE7EC03-CFB7-349D-9B9E-8782B38F231D> /usr/lib/system/libdispatch.dylib
0x1a2b0b000 - 0x1a2b46ff7 libsystem_malloc.dylib <5DBA2C01-92CA-3D1D-A27E-B4E14CFFB2F0> /usr/lib/system/libsystem_malloc.dylib
0x1b826f000 - 0x1b82f299f dyld <3060D36A-16CE-3C3A-9258-3881459F5714> /usr/lib/dyld
0x1de893000 - 0x1de89bfff GraphicsServices <8425EA11-000E-3E5E-8ABC-BDDF3FF3FA32> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x1e2c75000 - 0x1e2caeff3 libsystem_kernel.dylib <B9618C71-C0CB-31B6-825F-92A4737C890E> /usr/lib/system/libsystem_kernel.dylib
0x21ab23000 - 0x21ab2afe3 libsystem_platform.dylib <5079E5E0-3525-3D53-8FF0-3E297A22FC4F> /usr/lib/system/libsystem_platform.dylib
0x21ace7000 - 0x21acf3ff3 libsystem_pthread.dylib <3CA98E38-8EEE-3C26-9862-C5F66AAD93C0> /usr/lib/system/libsystem_pthread.dylib
0x2214aa000 - 0x2215eefff RenderBox <0837ABA1-A8E8-314F-A37A-46796D9AD06B> /System/Library/PrivateFrameworks/RenderBox.framework/RenderBoxHowever, I was un-successful in symbolicating the crash log. So I built-in the KSCrash reporting and got the below 2 crash logs.
KSCrash Log 1:
Incident Identifier: BCBFBE07-21C1-4B2E-9A10-102D312FB791
CrashReporter Key: 7505507639971381a237a594d721bdc0a44d89cb
Hardware Model: iPad13,16
Process: Ai-POSX [2798]
Path: /private/var/containers/Bundle/Application/77294858-92E8-449E-9E9E-B6D0C0BB02DA/Ai-POSX.app/Ai-POSX
Identifier: b4i.AiPOSX
Version: 4.39 (4.39)
Code Type: ARM-64
Parent Process: ? [1]
Date/Time: 2025-01-14 09:30:06.000 +1000
OS Version: iPadOS 18.2.1 (22C161)
Report Version: 104
Exception Type: 0 (SIGPIPE)
Exception Codes: 0x00000000 at 0x000000022c9a6fcc
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_platform.dylib 0x000000022c9a6fcc 0x22c9a4000 + 12236 (_platform_memset + 140)
1 CoreGraphics 0x00000001a4008c4c 0x1a3f9e000 + 437324 (CGBlt_fillBytes + 276)
2 CoreGraphics 0x00000001a3fab7e0 0x1a3f9e000 + 55264 (<redacted> + 9852)
3 CoreGraphics 0x00000001a4008514 0x1a3f9e000 + 435476 (<redacted> + 1108)
4 CoreGraphics 0x00000001a3fd1330 0x1a3f9e000 + 209712 (<redacted> + 504)
5 CoreGraphics 0x00000001a3fcf0d0 0x1a3f9e000 + 200912 (<redacted> + 472)
6 CoreGraphics 0x00000001a3ff2944 0x1a3f9e000 + 346436 (CGContextDrawPath + 336)
7 UIKitCore 0x00000001a4823480 0x1a474c000 + 881792 (<redacted> + 160)
8 Ai-POSX 0x00000001047d6350 0x1040d0000 + 7365456 (-[B4ICanvas DrawPath::::] + 252)
9 Ai-POSX 0x00000001047d5ac8 0x1040d0000 + 7363272 (-[B4ICanvas DrawRect::::] + 216)
10 Ai-POSX 0x000000010485b8a0 0x1040d0000 + 7911584 ( + 60)
11 Ai-POSX 0x0000000104208e44 0x1040d0000 + 1281604 ( + 828)
12 Ai-POSX 0x00000001047ae8ec 0x1040d0000 + 7203052 (__21-[B4ICommon Sleep:::]_block_invoke + 48)
13 libdispatch.dylib 0x00000001a9cdffa8 0x1a9cdc000 + 16296 (<redacted> + 20)
14 libdispatch.dylib 0x00000001a9ce345c 0x1a9cdc000 + 29788 (<redacted> + 596)
15 libdispatch.dylib 0x00000001a9cf7620 0x1a9cdc000 + 112160 (<redacted> + 420)
16 libdispatch.dylib 0x00000001a9cf61e8 0x1a9cdc000 + 106984 (<redacted> + 836)
17 libdispatch.dylib 0x00000001a9cee948 0x1a9cdc000 + 76104 (<redacted> + 748)
18 libdispatch.dylib 0x00000001a9cee64c 0x1a9cdc000 + 75340 (_dispatch_main_queue_callback_4CF + 44)
19 CoreFoundation 0x00000001a1fa9bbc 0x1a1f30000 + 498620 (<redacted> + 16)
20 CoreFoundation 0x00000001a1fa61b0 0x1a1f30000 + 483760 (<redacted> + 1996)
21 CoreFoundation 0x00000001a1ff8274 0x1a1f30000 + 819828 (CFRunLoopRunSpecific + 588)
22 GraphicsServices 0x00000001ef1414c0 0x1ef140000 + 5312 (GSEventRunModal + 164)
23 UIKitCore 0x00000001a4b3a77c 0x1a474c000 + 4122492 (<redacted> + 816)
24 UIKitCore 0x00000001a4760e64 0x1a474c000 + 85604 (UIApplicationMain + 340)
25 Ai-POSX 0x00000001040d4064 0x1040d0000 + 16484 ( + 100)
26 (null) 0x00000001c81b4de8 0x0 + 7652199912
Thread 1 name: com.apple.uikit.eventfetch-thread
Thread 1:
0 libsystem_kernel.dylib 0x00000001f355a788 0x1f3559000 + 6024 (mach_msg2_trap + 8)
1 libsystem_kernel.dylib 0x00000001f355de98 0x1f3559000 + 20120 (mach_msg2_internal + 80)
2 libsystem_kernel.dylib 0x00000001f355ddb0 0x1f3559000 + 19888 (mach_msg_overwrite + 424)
3 libsystem_kernel.dylib 0x00000001f355dbfc 0x1f3559000 + 19452 (mach_msg + 24)
4 CoreFoundation 0x00000001a1fa67f4 0x1a1f30000 + 485364 (<redacted> + 160)
5 CoreFoundation 0x00000001a1fa5ea0 0x1a1f30000 + 482976 (<redacted> + 1212)
6 CoreFoundation 0x00000001a1ff8274 0x1a1f30000 + 819828 (CFRunLoopRunSpecific + 588)
7 Foundation 0x00000001a0b5eb48 0x1a0b35000 + 170824 (<redacted> + 212)
8 Foundation 0x00000001a0cbb6f4 0x1a0b35000 + 1599220 (<redacted> + 64)
9 UIKitCore 0x00000001a4bcdb80 0x1a474c000 + 4725632 (<redacted> + 420)
10 Foundation 0x00000001a0c4aa54 0x1a0b35000 + 1137236 (<redacted> + 724)
11 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 2:
0 libsystem_kernel.dylib 0x00000001f35602b0 0x1f3559000 + 29360 (__semwait_signal + 8)
1 libsystem_c.dylib 0x00000001a9d3a5cc 0x1a9d22000 + 99788 (nanosleep + 220)
2 Foundation 0x00000001a13e1238 0x1a0b35000 + 9093688 (<redacted> + 160)
3 Ai-POSX 0x00000001048191f0 0x1040d0000 + 7639536 (-[B4IUDPSocket readerThread] + 668)
4 Foundation 0x00000001a0c4aa54 0x1a0b35000 + 1137236 (<redacted> + 724)
5 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 3:
0 libsystem_kernel.dylib 0x00000001f35602b0 0x1f3559000 + 29360 (__semwait_signal + 8)
1 libsystem_c.dylib 0x00000001a9d3a5cc 0x1a9d22000 + 99788 (nanosleep + 220)
2 libsystem_c.dylib 0x00000001a9d3a444 0x1a9d22000 + 99396 (sleep + 52)
3 Ai-POSX 0x00000001048c1f94 0x1040d0000 + 8331156 ( + 132)
4 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 4 name: KSCrash Exception Handler (Secondary)
Thread 4:
0 libsystem_kernel.dylib 0x00000001f355a788 0x1f3559000 + 6024 (mach_msg2_trap + 8)
1 libsystem_kernel.dylib 0x00000001f355de98 0x1f3559000 + 20120 (mach_msg2_internal + 80)
2 libsystem_kernel.dylib 0x00000001f355bcfc 0x1f3559000 + 11516 (thread_suspend + 108)
3 Ai-POSX 0x00000001048be808 0x1040d0000 + 8316936 ( + 152)
4 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 5 name: KSCrash Exception Handler (Primary)
Thread 5:
0 libsystem_kernel.dylib 0x00000001f355a788 0x1f3559000 + 6024 (mach_msg2_trap + 8)
1 libsystem_kernel.dylib 0x00000001f355de98 0x1f3559000 + 20120 (mach_msg2_internal + 80)
2 libsystem_kernel.dylib 0x00000001f355ddb0 0x1f3559000 + 19888 (mach_msg_overwrite + 424)
3 libsystem_kernel.dylib 0x00000001f355dbfc 0x1f3559000 + 19452 (mach_msg + 24)
4 Ai-POSX 0x00000001048be840 0x1040d0000 + 8316992 ( + 208)
5 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 6:
0 libsystem_kernel.dylib 0x00000001f355a510 0x1f3559000 + 5392 (__workq_kernreturn + 8)
1 libsystem_pthread.dylib 0x000000022ca536cc 0x22ca50000 + 14028 (_pthread_wqthread + 364)
Thread 7:
0 libsystem_kernel.dylib 0x00000001f355a510 0x1f3559000 + 5392 (__workq_kernreturn + 8)
1 libsystem_pthread.dylib 0x000000022ca536cc 0x22ca50000 + 14028 (_pthread_wqthread + 364)
Thread 8:
0 libsystem_pthread.dylib 0x000000022ca5146c 0x22ca50000 + 5228 (pthread_getspecific + 12)
Thread 9:
Thread 0 crashed with ARM-64 Thread State:
cpsr: 0x0000000020001000 fp: 0x000000016bd2df10 lr: 0x00000001a4008c4c pc: 0x000000022c9a6fcc
sp: 0x000000016bd2dee0 x0: 0x00000001235c3e00 x1: 0x0000000000000000 x10: 0x0000000000000000
x11: 0x0000000000000000 x12: 0x00000000000000e8 x13: 0x0000000000000001 x14: 0x0000000000000004
x15: 0x000000000000e200 x16: 0x000000022c9a6ee0 x17: 0x00000001a3fab6bc x18: 0x0000000000000000
x19: 0x00000001235c3e00 x2: 0x0000000000000148 x20: 0x0000000000000388 x21: 0x0000000000000067
x22: 0x00000000000003a0 x23: 0x00000001235a8020 x24: 0x0000000000000000 x25: 0x00000000ffffff00
x26: 0x00000001253fc720 x27: 0x00000000000000e2 x28: 0x00000001235a8020 x29: 0x000000016bd2df10
x3: 0x00000001235c4000 x4: 0x00000001235c3e80 x5: 0x0000000000000001 x6: 0x0000000301b53788
x7: 0x0000000301b53788 x8: 0x0000000000000001 x9: 0x0000000000000001
Binary Images:
0x1040d0000 - 0x1049dbfff +Ai-POSX arm64 <cb8faa9fb4de3c6a958cdfc7674935ad> /private/var/containers/Bundle/Application/77294858-92E8-449E-9E9E-B6D0C0BB02DA/Ai-POSX.app/Ai-POSX
0x105fa8000 - 0x105fb3fff libobjc-trampolines.dylib arm64 <be05652226b13a508ad193ac99fcdc9c> /private/preboot/Cryptexes/OS/usr/lib/libobjc-trampolines.dylib
0x19f4a8000 - 0x19f4f8ccf libobjc.A.dylib arm64 <3ed8b852087d3b6ea36fceafed8e93ae> /usr/lib/libobjc.A.dylib
0x19f4f9000 - 0x1a051cfff MetalPerformanceShadersGraph arm64 <c63300c9521d31c5bce2c53f1daa6650> /System/Library/Frameworks/MetalPerformanceShadersGraph.framework/MetalPerformanceShadersGraph
0x1a051d000 - 0x1a0abefff libswiftCore.dylib arm64 <e9b1dc6b7fef3bbbb083f4e8faaa53df> /usr/lib/swift/libswiftCore.dylib
0x1a0abf000 - 0x1a0b00b34 libswiftPrespecialized.dylib arm64 <a60c51d4e0e8363e90a4110a0d93f1f2> /usr/lib/libswiftPrespecialized.dylib
0x1a0b01000 - 0x1a0b34ffb CoreServicesInternal arm64 <6c069b24efe63a9facb6609247014c22> /System/Library/PrivateFrameworks/CoreServicesInternal.framework/CoreServicesInternal
0x1a0b35000 - 0x1a1865fff Foundation arm64 <7274dde368d634a08e677726e1265e80> /System/Library/Frameworks/Foundation.framework/Foundation
0x1a1866000 - 0x1a1a95fff WebGPU arm64 <836f7c6c57bd3ce9a7e2d67bec54e689> /System/Library/PrivateFrameworks/WebGPU.framework/WebGPU
0x1a1a96000 - 0x1a1cf8fff Metal arm64 <c699f21c7c513168b5f734c029e55401> /System/Library/Frameworks/Metal.framework/Metal
0x1a1cf9000 - 0x1a1f2ffff CoreServices arm64 <472e685d98ff3176a744411100947046> /System/Library/Frameworks/CoreServices.framework/CoreServices
0x1a1f30000 - 0x1a2473fff CoreFoundation arm64 <6a60be13e6573beca9acba239ae29862> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
.........more
Extra Information:
Stack Dump (0x000000016bd2de90-0x000000016bd2df80):
E2000000E2000000B8007895C5A356D8080008000000000020724F0A020000000000000000000000C0B53A230100000080B43A2301000000B8007895C5A356D8080008000000000020724F0A0200000020724F0A02000000C0B53A23000000000000000000000000000000FF000000000600000000000000000000000000000020E0D26B01000000E0B7FAA301000000000000000000000000200E000000000090C73F2501000000C0394F0A02000000080008000000000020724F0A020000000000000000000000020000000000000020410A0103000000000000000000000000200E00000000000070530601000000
Notable Addresses:
{}
Application Stats:
{
"active_time_since_last_crash": 2334.18,
"active_time_since_launch": 2334.18,
"application_active": true,
"application_in_foreground": true,
"background_time_since_last_crash": 767.486,
"background_time_since_launch": 767.486,
"launches_since_last_crash": 1,
"sessions_since_last_crash": 4,
"sessions_since_launch": 4
}
KSCrash Log 2:
Incident Identifier: 5F6FD41E-FF7A-4953-AAD3-0A51EBA92624
CrashReporter Key: 7505507639971381a237a594d721bdc0a44d89cb
Hardware Model: iPad13,16
Process: Ai-POSX [2824]
Path: /private/var/containers/Bundle/Application/77294858-92E8-449E-9E9E-B6D0C0BB02DA/Ai-POSX.app/Ai-POSX
Identifier: b4i.AiPOSX
Version: 4.39 (4.39)
Code Type: ARM-64
Parent Process: ? [1]
Date/Time: 2025-01-14 09:40:43.000 +1000
OS Version: iPadOS 18.2.1 (22C161)
Report Version: 104
Exception Type: 0 (SIGPIPE)
Exception Codes: 0x00000000 at 0x00000001a1f3d650
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 CoreFoundation 0x00000001a1f3d650 0x1a1f30000 + 54864 (__CFStringHash + 120)
1 CoreFoundation 0x00000001a1f3d3d0 0x1a1f30000 + 54224 (<redacted> + 108)
2 UIKitCore 0x00000001a4774390 0x1a474c000 + 164752 (<redacted> + 56)
3 UIKitCore 0x00000001a47740e0 0x1a474c000 + 164064 (<redacted> + 132)
4 UIKitCore 0x00000001a4774218 0x1a474c000 + 164376 (<redacted> + 288)
5 QuartzCore 0x00000001a3a20cdc 0x1a3a08000 + 101596 (<redacted> + 148)
6 QuartzCore 0x00000001a3a20b50 0x1a3a08000 + 101200 (<redacted> + 204)
7 QuartzCore 0x00000001a3a9a36c 0x1a3a08000 + 598892 (<redacted> + 128)
8 Ai-POSX 0x00000001049aeea0 0x1042a8000 + 7368352 (-[B4ICanvas Refresh] + 120)
9 Ai-POSX 0x00000001043e0f38 0x1042a8000 + 1281848 ( + 1072)
10 Ai-POSX 0x00000001049868ec 0x1042a8000 + 7203052 (__21-[B4ICommon Sleep:::]_block_invoke + 48)
11 libdispatch.dylib 0x00000001a9cdffa8 0x1a9cdc000 + 16296 (<redacted> + 20)
12 libdispatch.dylib 0x00000001a9ce345c 0x1a9cdc000 + 29788 (<redacted> + 596)
13 libdispatch.dylib 0x00000001a9cf7620 0x1a9cdc000 + 112160 (<redacted> + 420)
14 libdispatch.dylib 0x00000001a9cf61e8 0x1a9cdc000 + 106984 (<redacted> + 836)
15 libdispatch.dylib 0x00000001a9cee948 0x1a9cdc000 + 76104 (<redacted> + 748)
16 libdispatch.dylib 0x00000001a9cee64c 0x1a9cdc000 + 75340 (_dispatch_main_queue_callback_4CF + 44)
17 CoreFoundation 0x00000001a1fa9bbc 0x1a1f30000 + 498620 (<redacted> + 16)
18 CoreFoundation 0x00000001a1fa61b0 0x1a1f30000 + 483760 (<redacted> + 1996)
19 CoreFoundation 0x00000001a1ff8274 0x1a1f30000 + 819828 (CFRunLoopRunSpecific + 588)
20 GraphicsServices 0x00000001ef1414c0 0x1ef140000 + 5312 (GSEventRunModal + 164)
21 UIKitCore 0x00000001a4b3a77c 0x1a474c000 + 4122492 (<redacted> + 816)
22 UIKitCore 0x00000001a4760e64 0x1a474c000 + 85604 (UIApplicationMain + 340)
23 Ai-POSX 0x00000001042ac064 0x1042a8000 + 16484 ( + 100)
24 (null) 0x00000001c81b4de8 0x0 + 7652199912
Thread 1 name: com.apple.uikit.eventfetch-thread
Thread 1:
0 libsystem_kernel.dylib 0x00000001f355a788 0x1f3559000 + 6024 (mach_msg2_trap + 8)
1 libsystem_kernel.dylib 0x00000001f355de98 0x1f3559000 + 20120 (mach_msg2_internal + 80)
2 libsystem_kernel.dylib 0x00000001f355ddb0 0x1f3559000 + 19888 (mach_msg_overwrite + 424)
3 libsystem_kernel.dylib 0x00000001f355dbfc 0x1f3559000 + 19452 (mach_msg + 24)
4 CoreFoundation 0x00000001a1fa67f4 0x1a1f30000 + 485364 (<redacted> + 160)
5 CoreFoundation 0x00000001a1fa5ea0 0x1a1f30000 + 482976 (<redacted> + 1212)
6 CoreFoundation 0x00000001a1ff8274 0x1a1f30000 + 819828 (CFRunLoopRunSpecific + 588)
7 Foundation 0x00000001a0b5eb48 0x1a0b35000 + 170824 (<redacted> + 212)
8 Foundation 0x00000001a0cbb6f4 0x1a0b35000 + 1599220 (<redacted> + 64)
9 UIKitCore 0x00000001a4bcdb80 0x1a474c000 + 4725632 (<redacted> + 420)
10 Foundation 0x00000001a0c4aa54 0x1a0b35000 + 1137236 (<redacted> + 724)
11 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 2:
0 libsystem_kernel.dylib 0x00000001f35602b0 0x1f3559000 + 29360 (__semwait_signal + 8)
1 libsystem_c.dylib 0x00000001a9d3a5cc 0x1a9d22000 + 99788 (nanosleep + 220)
2 Foundation 0x00000001a13e1238 0x1a0b35000 + 9093688 (<redacted> + 160)
3 Ai-POSX 0x00000001049f11f0 0x1042a8000 + 7639536 (-[B4IUDPSocket readerThread] + 668)
4 Foundation 0x00000001a0c4aa54 0x1a0b35000 + 1137236 (<redacted> + 724)
5 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 3:
0 libsystem_kernel.dylib 0x00000001f35602b0 0x1f3559000 + 29360 (__semwait_signal + 8)
1 libsystem_c.dylib 0x00000001a9d3a5cc 0x1a9d22000 + 99788 (nanosleep + 220)
2 libsystem_c.dylib 0x00000001a9d3a444 0x1a9d22000 + 99396 (sleep + 52)
3 Ai-POSX 0x0000000104a99f94 0x1042a8000 + 8331156 ( + 132)
4 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 4 name: KSCrash Exception Handler (Secondary)
Thread 4:
0 libsystem_kernel.dylib 0x00000001f355a788 0x1f3559000 + 6024 (mach_msg2_trap + 8)
1 libsystem_kernel.dylib 0x00000001f355de98 0x1f3559000 + 20120 (mach_msg2_internal + 80)
2 libsystem_kernel.dylib 0x00000001f355bcfc 0x1f3559000 + 11516 (thread_suspend + 108)
3 Ai-POSX 0x0000000104a96808 0x1042a8000 + 8316936 ( + 152)
4 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 5 name: KSCrash Exception Handler (Primary)
Thread 5:
0 libsystem_kernel.dylib 0x00000001f355a788 0x1f3559000 + 6024 (mach_msg2_trap + 8)
1 libsystem_kernel.dylib 0x00000001f355de98 0x1f3559000 + 20120 (mach_msg2_internal + 80)
2 libsystem_kernel.dylib 0x00000001f355ddb0 0x1f3559000 + 19888 (mach_msg_overwrite + 424)
3 libsystem_kernel.dylib 0x00000001f355dbfc 0x1f3559000 + 19452 (mach_msg + 24)
4 Ai-POSX 0x0000000104a96840 0x1042a8000 + 8316992 ( + 208)
5 libsystem_pthread.dylib 0x000000022ca517d0 0x22ca50000 + 6096 (_pthread_start + 136)
Thread 6:
0 libsystem_pthread.dylib 0x000000022ca5146c 0x22ca50000 + 5228 (pthread_getspecific + 12)
Thread 7:
0 libsystem_kernel.dylib 0x00000001f355a510 0x1f3559000 + 5392 (__workq_kernreturn + 8)
1 libsystem_pthread.dylib 0x000000022ca536cc 0x22ca50000 + 14028 (_pthread_wqthread + 364)
Thread 8:
0 libsystem_kernel.dylib 0x00000001f355a510 0x1f3559000 + 5392 (__workq_kernreturn + 8)
1 libsystem_pthread.dylib 0x000000022ca536cc 0x22ca50000 + 14028 (_pthread_wqthread + 364)
Thread 9:
Thread 0 crashed with ARM-64 Thread State:
cpsr: 0x0000000000001000 fp: 0x000000016bb56300 lr: 0x00000001a1f3d3d0 pc: 0x00000001a1f3d650
sp: 0x000000016bb562c0 x0: 0x000000020c35d460 x1: 0x00000002165128d8 x10: 0x00000001a3d5a58f
x11: 0x00000000000007c8 x12: 0x0000000000000005 x13: 0x00000001094c5880 x14: 0x000000020a5014d0
x15: 0x000000020a5014d0 x16: 0x000000020a5024c0 x17: 0x00000001a1f3e100 x18: 0x0000000000000000
x19: 0x000000020c35d460 x2: 0x000000020c35d460 x20: 0x0000000303d04b50 x21: 0x0000000000000047
x22: 0x0000000303cfa280 x23: 0x00000001133ed040 x24: 0x0000000106948780 x25: 0x000000020a4f7220
x26: 0x0000000000080008 x27: 0x000000020a4f39c0 x28: 0x000000020a4f3a40 x29: 0x000000016bb56300
x3: 0x000000020c35d460 x4: 0x0000000000000000 x5: 0x0000000000000000 x6: 0x00000000000007fd
x7: 0x0000000000f9092c x8: 0x0000000000000008 x9: 0x000000020c35d468
Binary Images:
0x1042a8000 - 0x104bb3fff +Ai-POSX arm64 <cb8faa9fb4de3c6a958cdfc7674935ad> /private/var/containers/Bundle/Application/77294858-92E8-449E-9E9E-B6D0C0BB02DA/Ai-POSX.app/Ai-POSX
0x105890000 - 0x10589bfff libobjc-trampolines.dylib arm64 <be05652226b13a508ad193ac99fcdc9c> /private/preboot/Cryptexes/OS/usr/lib/libobjc-trampolines.dylib
0x19f4a8000 - 0x19f4f8ccf libobjc.A.dylib arm64 <3ed8b852087d3b6ea36fceafed8e93ae> /usr/lib/libobjc.A.dylib
0x19f4f9000 - 0x1a051cfff MetalPerformanceShadersGraph arm64 <c63300c9521d31c5bce2c53f1daa6650> /System/Library/Frameworks/MetalPerformanceShadersGraph.framework/MetalPerformanceShadersGraph
0x1a051d000 - 0x1a0abefff libswiftCore.dylib arm64 <e9b1dc6b7fef3bbbb083f4e8faaa53df> /usr/lib/swift/libswiftCore.dylib
0x1a0abf000 - 0x1a0b00b34 libswiftPrespecialized.dylib arm64 <a60c51d4e0e8363e90a4110a0d93f1f2> /usr/lib/libswiftPrespecialized.dylib
0x1a0b01000 - 0x1a0b34ffb CoreServicesInternal arm64 <6c069b24efe63a9facb6609247014c22> /System/Library/PrivateFrameworks/CoreServicesInternal.framework/CoreServicesInternal
0x1a0b35000 - 0x1a1865fff Foundation arm64 <7274dde368d634a08e677726e1265e80> /System/Library/Frameworks/Foundation.framework/Foundation
0x1a1866000 - 0x1a1a95fff WebGPU arm64 <836f7c6c57bd3ce9a7e2d67bec54e689> /System/Library/PrivateFrameworks/WebGPU.framework/WebGPU
0x1a1a96000 - 0x1a1cf8fff Metal arm64 <c699f21c7c513168b5f734c029e55401> /System/Library/Frameworks/Metal.framework/Metal
0x1a1cf9000 - 0x1a1f2ffff CoreServices arm64 <472e685d98ff3176a744411100947046> /System/Library/Frameworks/CoreServices.framework/CoreServices
0x1a1f30000 - 0x1a2473fff CoreFoundation arm64 <6a60be13e6573beca9acba239ae29862> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x1a2474000 - 0x1a3424fff Network arm64 <5389a7437c0f3a37b35c6825a8263f94> /System/Library/Frameworks/Network.framework/Network
0x1a3425000 - 0x1a37e9fff CFNetwork arm64 <9987879240643260b5b2779a99b9f64e> /System/Library/Frameworks/CFNetwork.framework/CFNetwork
0x1a37ea000 - 0x1a3a07fff CoreTelephony arm64 <4fce9fdac4c9349687b92f426e9ed142> /System/Library/Frameworks/CoreTelephony.framework/CoreTelephony
...........more
Extra Information:
Stack Dump (0x000000016bb56270-0x000000016bb56360):
D063B56B01000000DC42F3A101000000403A4F0A02000000C0394F0A020000004F00000000000000C030421B010000000064B56B010000004843F3A10100000001000000000000000100000000000000080008000000000020724F0A02000000000000000000000040D03E130100000080A2CF0303000000C08F461B01000000FFFFFFFFFFFFFFFF60D4350C020000002063B56B01000000904377A401000000C08F461B0100000060D4350C020000004063B56B01000000E04077A40100000060D4350C0200000080A2CF0303000000C063B56B01000000184277A4010000009063B56B010000007CA355F301000000
Notable Addresses:
{
"x1": {
"address": 8964352216,
"type": "string",
"value": "hash"
},
"x10": {
"address": 7043655055,
"type": "string",
"value": "contents"
}
}
Application Stats:
{
"active_time_since_last_crash": 434.15,
"active_time_since_launch": 434.15,
"application_active": true,
"application_in_foreground": true,
"background_time_since_last_crash": 148.285,
"background_time_since_launch": 148.285,
"launches_since_last_crash": 1,
"sessions_since_last_crash": 2,
"sessions_since_launch": 2
}From the above 2 logs, gathered that the crash might have something to do with b4xcanvas. So, I went through the entire project looking for a B4xcanvas being initialized inside a loop or not being released after usage, but I found none like that.
One other step that I took hoping to solve the issue was to disable the UDP broadcast as the the exception type was [SIGPIPE], and as I understand happens when trying to access a socket that has been closed. Not sure whether this is the cause of the issue.
Anyway any help or insight on this will be very valuable to me. It is a cross platform app, the issue only persists for the iOS app. Have not been able to recreate the issue. Thanks.
Last edited:
