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20 hours ago •
usabilla
usabilla
Crash logs with AppCrash.swift
Hi,
I'm working on an app that uses Usabilla 6.12.0. Recently I'm starting to see crashes that point to AppCrash.RecieveSignal. e.g.
Crashed: com.apple.NSURLSession-work
0 libsystem_platform.dylib 0x60bc _os_unfair_lock_recursive_abort + 36
1 libsystem_platform.dylib 0xa18 _os_unfair_lock_lock_slow + 280
2 libsystem_malloc.dylib 0x3c40 tiny_malloc_should_clear + 152
3 libsystem_malloc.dylib 0x6e24 szone_malloc_should_clear + 80
4 libsystem_malloc.dylib 0x6024 _malloc_zone_malloc + 156
5 libswiftCore.dylib 0x39a054 swift_slowAlloc + 64
6 libswiftCore.dylib 0x39a250 swift_allocObject + 64
7 libswiftFoundation.dylib 0x3b194 _ContiguousArrayBuffer._consumeAndCreateNew(bufferIsUnique:minimumCapacity:growForAppend:) + 204
8 libswiftFoundation.dylib 0x1b868 ContiguousArray._createNewBuffer(bufferIsUnique:minimumCapacity:growForAppend:) + 76
9 libswiftFoundation.dylib 0x3ac4 specialized _arrayForceCast<A, B>(_:) + 296
10 libswiftFoundation.dylib 0x398c static Array._unconditionallyBridgeFromObjectiveC(_:) + 272
11 Usabilla 0x126dc4 closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 154 (AppCrash.swift:154)
12 libsystem_platform.dylib 0x1c10 _sigtramp + 56
13 libsystem_pthread.dylib 0x73bc pthread_kill + 268
14 libsystem_c.dylib 0x20524 abort + 168
15 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
16 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
17 libsystem_malloc.dylib 0x1c790 free_list_checksum_botch + 40
18 libsystem_malloc.dylib 0x3848 tiny_malloc_from_free_list + 1820
19 libsystem_malloc.dylib 0x3c84 tiny_malloc_should_clear + 220
20 libsystem_malloc.dylib 0x6e24 szone_malloc_should_clear + 80
21 libsystem_malloc.dylib 0x4e5c _malloc_zone_calloc + 88
22 libobjc.A.dylib 0x5410 _objc_rootAllocWithZone + 40
23 CFNetwork 0x71e7c _CFURLStorageSessionCopyCache + 9232
24 CFNetwork 0x5b74c CFHTTPCookieStorageCopyCookies + 11748
25 CFNetwork 0x4d088 CFURLCacheRemoveAllCachedResponses + 12616
26 CFNetwork 0xa450 CFHTTPCookieCopyDomain + 2040
27 CFNetwork 0x1f4f0 CFHTTPCookieCopyRequestHeaderFields + 1040
28 libdispatch.dylib 0x12830 _dispatch_block_async_invoke2 + 148
29 libdispatch.dylib 0x3a30 _dispatch_client_callout + 20
30 libdispatch.dylib 0xb124 _dispatch_lane_serial_drain + 668
31 libdispatch.dylib 0xbcb4 _dispatch_lane_invoke + 444
32 libdispatch.dylib 0x16500 _dispatch_workloop_worker_thread + 648
33 libsystem_pthread.dylib 0x10bc _pthread_wqthread + 288
34 libsystem_pthread.dylib 0xe5c start_wqthread + 8
Here's another crash:
Crashed: com.apple.CFNetwork.Connection
0 libsystem_platform.dylib 0x60bc _os_unfair_lock_recursive_abort + 36
1 libsystem_platform.dylib 0xa18 _os_unfair_lock_lock_slow + 280
2 libsystem_malloc.dylib 0x3c40 tiny_malloc_should_clear + 152
3 libsystem_malloc.dylib 0x6e24 szone_malloc_should_clear + 80
4 libsystem_malloc.dylib 0x6024 _malloc_zone_malloc + 156
5 libswiftCore.dylib 0x39a054 swift_slowAlloc + 64
6 libswiftCore.dylib 0x39a250 swift_allocObject + 64
7 libswiftFoundation.dylib 0x3b194 _ContiguousArrayBuffer._consumeAndCreateNew(bufferIsUnique:minimumCapacity:growForAppend:) + 204
8 libswiftFoundation.dylib 0x1b868 ContiguousArray._createNewBuffer(bufferIsUnique:minimumCapacity:growForAppend:) + 76
9 libswiftFoundation.dylib 0x3ac4 specialized _arrayForceCast<A, B>(_:) + 296
10 libswiftFoundation.dylib 0x398c static Array._unconditionallyBridgeFromObjectiveC(_:) + 272
11 Usabilla 0x126dc4 closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 154 (AppCrash.swift:154)
12 libsystem_platform.dylib 0x1c10 _sigtramp + 56
13 libsystem_pthread.dylib 0x73bc pthread_kill + 268
14 libsystem_c.dylib 0x20524 abort + 168
15 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
16 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
17 libsystem_malloc.dylib 0x1c790 free_list_checksum_botch + 40
18 libsystem_malloc.dylib 0x3848 tiny_malloc_from_free_list + 1820
19 libsystem_malloc.dylib 0x3c84 tiny_malloc_should_clear + 220
20 libsystem_malloc.dylib 0x6e24 szone_malloc_should_clear + 80
21 libsystem_malloc.dylib 0x4e5c _malloc_zone_calloc + 88
22 libobjc.A.dylib 0x2a1c class_createInstance + 64
23 libnetwork.dylib 0x5e284c nw_protocol_metadata_create_singleton + 188
24 libquic.dylib 0xf220 quic_alloc_stream + 288
25 libnetwork.dylib 0x40298 nw_protocol_implementation_add_input_handler + 3632
26 libnetwork.dylib 0x68dfdc nw_endpoint_handler_register_context_internal + 448
27 libnetwork.dylib 0x697a24 nw_endpoint_handler_add_write_request + 1404
28 libnetwork.dylib 0x6e1a30 nw_connection_add_write_request_on_queue + 160
29 libnetwork.dylib 0x6e1928 nw_connection_add_write_request + 272
30 libnetwork.dylib 0x6e0de4 nw_connection_send + 224
31 CFNetwork 0x110cc4 CFURLDownloadCancel + 50188
32 CFNetwork 0x13b5bc _CFNetworkErrorGetLocalizedDescription + 30760
33 CFNetwork 0x13b424 _CFNetworkErrorGetLocalizedDescription + 30352
34 CFNetwork 0xbb438 CFURLCredentialStorageSetDefaultCredentialForProtectionSpace + 9128
35 CFNetwork 0xbb394 CFURLCredentialStorageSetDefaultCredentialForProtectionSpace + 8964
36 CFNetwork 0xba934 CFURLCredentialStorageSetDefaultCredentialForProtectionSpace + 6308
37 CFNetwork 0xbacb4 CFURLCredentialStorageSetDefaultCredentialForProtectionSpace + 7204
38 CFNetwork 0xbb23c CFURLCredentialStorageSetDefaultCredentialForProtectionSpace + 8620
39 CFNetwork 0x138920 _CFNetworkErrorGetLocalizedDescription + 19340
40 CFNetwork 0x137eec _CFNetworkErrorGetLocalizedDescription + 16728
41 CFNetwork 0x1116f0 CFURLDownloadCancel + 52792
42 libdispatch.dylib 0x12830 _dispatch_block_async_invoke2 + 148
43 libdispatch.dylib 0x3a30 _dispatch_client_callout + 20
44 libdispatch.dylib 0xb124 _dispatch_lane_serial_drain + 668
45 libdispatch.dylib 0xbcb4 _dispatch_lane_invoke + 444
46 libdispatch.dylib 0xcf80 _dispatch_workloop_invoke + 1784
47 libdispatch.dylib 0x16500 _dispatch_workloop_worker_thread + 648
48 libsystem_pthread.dylib 0x10bc _pthread_wqthread + 288
49 libsystem_pthread.dylib 0xe5c start_wqthread + 8
So far I haven't found a way to reproduce the crash, and I'm having trouble understanding why there's AppCrash.swift here. Is it a crash handler that Usabilla provides that tries to intercept and respond to app crashes? (I don't see this mentioned anywhere as an Usabilla feature) Should I intercept the above logs as:
- app crashed, Usabilla tracked the error?
- app crashed, Usabilla tracked the error, but Usabilla also crashed?
- Usabilla crashed?
Thanks!
Update, here comes a new crash report that has something different:
Crashed: com.apple.CFNetwork.Connection
0 libsystem_platform.dylib 0x60bc _os_unfair_lock_recursive_abort + 36
1 libsystem_platform.dylib 0xa18 _os_unfair_lock_lock_slow + 280
2 libsystem_malloc.dylib 0x3c40 tiny_malloc_should_clear + 152
3 libsystem_malloc.dylib 0x6e24 szone_malloc_should_clear + 80
4 libsystem_malloc.dylib 0x4e5c _malloc_zone_calloc + 88
5 libobjc.A.dylib 0x7470 cache_t::insert(objc_selector*, void (*)(), objc_object*) + 460
6 libobjc.A.dylib 0x6bf0 lookUpImpOrForward + 636
7 libobjc.A.dylib 0x23e4 _objc_msgSend_uncached + 68
8 UIKitCore 0x1f1890 _updateBatteryStatusBasedOnProperties + 484
9 UIKitCore 0x5ce3e0 _3rdParty_batteryInformationChanged + 580
10 UIKitCore 0x4cf448 -[UIDevice setBatteryMonitoringEnabled:] + 1292
11 Usabilla 0xe9fa8 specialized AppMetaData.init() + 19 (AppMetaData.swift:19)
12 Usabilla 0x126fa0 closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 4324372384 (<compiler-generated>:4324372384)
13 libsystem_platform.dylib 0x1c10 _sigtramp + 56
14 libsystem_pthread.dylib 0x73bc pthread_kill + 268
15 libsystem_c.dylib 0x20524 abort + 168
16 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
17 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
18 libsystem_malloc.dylib 0x1c790 free_list_checksum_botch + 40
19 libsystem_malloc.dylib 0x3848 tiny_malloc_from_free_list + 1820
20 libsystem_malloc.dylib 0x3c84 tiny_malloc_should_clear + 220
21 libsystem_malloc.dylib 0x6e24 szone_malloc_should_clear + 80
22 libsystem_malloc.dylib 0x6024 _malloc_zone_malloc + 156
23 CoreFoundation 0x2b740 _CFRuntimeCreateInstance + 612
24 CFNetwork 0x7df0c CFURLResponseCreateWithHTTPResponse + 148
25 CFNetwork 0x1987fc _CFNetworkErrorGetLocalizedDescription + 412264
26 CFNetwork 0x195d3c _CFNetworkErrorGetLocalizedDescription + 401320
27 CFNetwork 0x19cd34 _CFNetworkErrorGetLocalizedDescription + 429984
28 CFNetwork 0x19bab4 _CFNetworkErrorGetLocalizedDescription + 425248
29 CFNetwork 0x266d5c kCFNIE + 19588
30 CFNetwork 0x1fece8 _CFNetworkHTTPConnectionCacheGetLimit + 71592
31 CFNetwork 0x25d6dc __CFNetworkAgentMessageProcessorMain + 125896
32 CFNetwork 0x25d100 __CFNetworkAgentMessageProcessorMain + 124396
33 libdispatch.dylib 0x1e6c _dispatch_call_block_and_release + 32
34 libdispatch.dylib 0x3a30 _dispatch_client_callout + 20
35 libdispatch.dylib 0xb124 _dispatch_lane_serial_drain + 668
36 libdispatch.dylib 0xbcb4 _dispatch_lane_invoke + 444
37 libdispatch.dylib 0xcf80 _dispatch_workloop_invoke + 1784
38 libdispatch.dylib 0x16500 _dispatch_workloop_worker_thread + 648
39 libsystem_pthread.dylib 0x10bc _pthread_wqthread + 288
40 libsystem_pthread.dylib 0xe5c start_wqthread + 8
Note the call to UIDevice.setBatteryMonitoringEnabled at line 10. A bit googling suggests that this setBatteryMonitoringEnabled API is not thread safe (link).
Another thought - I can see that our direct calls to Usabilla are all made on the main thread. But by reading the above crash logs I can see that they all happened on non-UI threads. Could it be that Usabilla registers some kind of global event listener and gets invoked on the events' threads?
Hi @dyang thanks for reaching out!
This file logs the crash as in Usabilla we have a standard event which tracks the crash and triggers the Campaign on the next launch, based on the crash (if Campaign created for it).
Can you please update to the latest SDK (v6.12.3) and let us know if this resolves the issue?
Thanks in advance :) Emmett
@emulroy9 Thanks for the info. I'll try v6.12.3 and report back.
When it comes to the standard Usabilla event you mentioned, does it track all crashes, i.e those that are caused by non-Usabilla code? I'm curious because I never saw AppCrash.swift in our crash reports prior to this. :)
@dyang no problem at all, thanks :)
The reason for this is that standard events only started from v6.12.0
Update: We're still seeing crashes after the 6.23.3 upgrade. One type of crash stood up in particular, see the logs below:
Crashed: com.usabilla.u4a.storage
0 libdispatch.dylib 0x12fe8 __DISPATCH_WAIT_FOR_QUEUE__ + 476
1 libdispatch.dylib 0x12b28 _dispatch_sync_f_slow + 144
2 Usabilla 0xf15dc AppEventNotifier.createJustInTimeEvaluationbject() + 4345550300 (AppEventNotifier.swift:4345550300)
3 Usabilla 0x12b18c closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 166 (AppEventNotifier.swift:166)
4 libsystem_platform.dylib 0x1c10 _sigtramp + 56
5 libsystem_pthread.dylib 0x73bc pthread_kill + 268
6 libsystem_c.dylib 0x20524 abort + 168
7 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
8 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
9 libsystem_malloc.dylib 0x170dc nanov2_allocate_from_block + 568
10 libsystem_malloc.dylib 0x16164 nanov2_allocate + 128
11 libsystem_malloc.dylib 0x16750 nanov2_calloc + 160
12 libsystem_malloc.dylib 0x4e5c _malloc_zone_calloc + 88
13 CoreFoundation 0x2b628 _CFRuntimeCreateInstance + 332
14 CoreFoundation 0x27838 __CFStringCreateImmutableFunnel3 + 1848
15 CoreFoundation 0x2dedc CFStringCreateWithBytes + 48
16 Foundation 0x1bf4c +[NSString stringWithUTF8String:] + 80
17 libswiftCore.dylib 0x1358c _CocoaArrayWrapper.subscript.getter + 56
18 libswiftFoundation.dylib 0x3b00 specialized _arrayForceCast<A, B>(_:) + 356
19 libswiftFoundation.dylib 0x398c static Array._unconditionallyBridgeFromObjectiveC(_:) + 272
20 Usabilla 0x12acf8 closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 154 (AppCrash.swift:154)
21 libsystem_platform.dylib 0x1c10 _sigtramp + 56
22 libsystem_pthread.dylib 0x73bc pthread_kill + 268
23 libsystem_c.dylib 0x20524 abort + 168
24 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
25 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
26 libsystem_malloc.dylib 0x170dc nanov2_allocate_from_block + 568
27 libsystem_malloc.dylib 0x16164 nanov2_allocate + 128
28 libsystem_malloc.dylib 0x16750 nanov2_calloc + 160
29 libsystem_malloc.dylib 0x4e5c _malloc_zone_calloc + 88
30 libobjc.A.dylib 0x2a1c class_createInstance + 64
31 CoreFoundation 0x292e8 __CFAllocateObject + 24
32 CoreFoundation 0x213f0 __NSDictionaryI_new + 144
33 CoreFoundation 0x88250 __NSCFDictionaryCreateTransfer + 224
34 CoreFoundation 0xc75b4 __CFDictionaryCreateTransfer + 64
35 CoreFoundation 0x1be50 __CFBinaryPlistCreateObjectFiltered + 6832
36 CoreFoundation 0x1b244 __CFBinaryPlistCreateObjectFiltered + 3748
37 CoreFoundation 0x1b984 __CFBinaryPlistCreateObjectFiltered + 5604
38 CoreFoundation 0x10b58 __CFTryParseBinaryPlist + 244
39 CoreFoundation 0x68370 _CFPropertyListCreateWithData + 164
40 CoreFoundation 0x6a9cc CFPropertyListCreateWithData + 60
41 Foundation 0x356b0 +[NSPropertyListSerialization propertyListWithData:options:format:error:] + 56
42 libswiftFoundation.dylib 0xf353c closure #1 in PropertyListDecoder.decode<A>(_:from:format:) + 116
43 libswiftFoundation.dylib 0xf3600 partial apply for closure #1 in PropertyListDecoder.decode<A>(_:from:format:) + 24
44 libswiftObjectiveC.dylib 0x1a10 autoreleasepool<A>(invoking:) + 64
45 libswiftFoundation.dylib 0x2f078 PropertyListDecoder.decode<A>(_:from:format:) + 240
46 libswiftFoundation.dylib 0x28c08 PropertyListDecoder.decode<A>(_:from:) + 72
47 libswiftFoundation.dylib 0x2bd44 dispatch thunk of PropertyListDecoder.decode<A>(_:from:) + 48
48 Usabilla 0xfe3e0 specialized closure #1 in FileStorageDAO.read(id:) + 65 (FileStorageDAO.swift:65)
49 Usabilla 0xdda3c thunk for @callee_guaranteed () -> () + 4345469500 (<compiler-generated>:4345469500)
50 Usabilla 0xdda5c thunk for @escaping @callee_guaranteed () -> () + 4345469532 (<compiler-generated>:4345469532)
51 libdispatch.dylib 0x3a30 _dispatch_client_callout + 20
52 libdispatch.dylib 0x12c90 _dispatch_lane_barrier_sync_invoke_and_complete + 56
53 Usabilla 0x994d0 specialized FileStorageDAO.readAll() + 62 (FileStorageDAO.swift:62)
54 Usabilla 0x9989c DefaultEventEngine.triggered(_:evalObject:) + 18 (DefaultEventStore.swift:18)
55 Usabilla 0x12b1a0 closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 166 (AppEventNotifier.swift:166)
56 libsystem_platform.dylib 0x1c10 _sigtramp + 56
57 libsystem_pthread.dylib 0x73bc pthread_kill + 268
58 libsystem_c.dylib 0x20524 abort + 168
59 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
60 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
61 libsystem_malloc.dylib 0x170dc nanov2_allocate_from_block + 568
62 libsystem_malloc.dylib 0x16164 nanov2_allocate + 128
63 libsystem_malloc.dylib 0x16750 nanov2_calloc + 160
64 libsystem_malloc.dylib 0x4e5c _malloc_zone_calloc + 88
65 CoreFoundation 0x2b628 _CFRuntimeCreateInstance + 332
66 CoreFoundation 0x27838 __CFStringCreateImmutableFunnel3 + 1848
67 CoreFoundation 0x2dedc CFStringCreateWithBytes + 48
68 Foundation 0x1bf4c +[NSString stringWithUTF8String:] + 80
69 libswiftCore.dylib 0x1358c _CocoaArrayWrapper.subscript.getter + 56
70 libswiftFoundation.dylib 0x3b00 specialized _arrayForceCast<A, B>(_:) + 356
71 libswiftFoundation.dylib 0x398c static Array._unconditionallyBridgeFromObjectiveC(_:) + 272
72 Usabilla 0x12acf8 closure #1 in variable initialization expression of static AppCrash.RecieveSignal + 154 (AppCrash.swift:154)
73 libsystem_platform.dylib 0x1c10 _sigtramp + 56
74 libsystem_pthread.dylib 0x73bc pthread_kill + 268
75 libsystem_c.dylib 0x20524 abort + 168
76 libsystem_malloc.dylib 0x1ca04 _malloc_put + 550
77 libsystem_malloc.dylib 0x1cc9c malloc_zone_error + 100
78 libsystem_malloc.dylib 0x170dc nanov2_allocate_from_block + 568
79 libsystem_malloc.dylib 0x16164 nanov2_allocate + 128
80 libsystem_malloc.dylib 0x16080 nanov2_malloc + 64
81 libsystem_malloc.dylib 0x6024 _malloc_zone_malloc + 156
82 CoreFoundation 0x3f408 __CFStrAllocateMutableContents + 100
83 CoreFoundation 0x2ef48 __CFStringChangeSizeMultiple + 656
84 CoreFoundation 0x2387c __CFStringAppendBytes + 672
85 CoreFoundation 0x8f90 __CFStringAppendFormatCore + 8052
86 CoreFoundation 0x2898c _CFStringCreateWithFormatAndArgumentsReturningMetadata + 176
87 CoreFoundation 0x28b64 CFStringCreateWithFormat + 48
88 libnetwork.dylib 0xaf2a8 -[NWConcrete_nw_activity description] + 696
89 Foundation 0x1c210 _NS_os_log_callback + 284
90 libsystem_trace.dylib 0x7280 _os_log_fmt_flatten_NSCF + 64
91 libsystem_trace.dylib 0x6970 _os_log_fmt_flatten_object + 232
92 libsystem_trace.dylib 0x47d4 _os_log_impl_flatten_and_send + 1856
93 libsystem_trace.dylib 0x2804 _os_log + 152
94 libsystem_trace.dylib 0x7de0 _os_log_impl + 24
95 CFNetwork 0x155fc CFURLCacheSetMemoryCapacity + 20016
96 <app> 0x58a0 closure #1 in NSURLSession.data(from:) + 24 (URLSession+Util.swift:24)
97 libswift_Concurrency.dylib 0x68ac partial apply for closure #1 in withCheckedThrowingContinuation<A>(function:_:) + 168
98 libswift_Concurrency.dylib 0x69c0 withUnsafeThrowingContinuation<A>(_:) + 228
99 libswift_Concurrency.dylib 0x3b7cc swift::runJobInEstablishedExecutorContext(swift::Job*) + 244
100 libswift_Concurrency.dylib 0x3c1e8 swift_job_runImpl(swift::Job*, swift::ExecutorRef) + 72
101 libdispatch.dylib 0x15164 _dispatch_root_queue_drain + 396
102 libdispatch.dylib 0x1596c _dispatch_worker_thread2 + 164
103 libsystem_pthread.dylib 0x1080 _pthread_wqthread + 228
104 libsystem_pthread.dylib 0xe5c start_wqthread + 8
Note that the crash started from our code (line 96), but then what's strange is the 4 nested calls to AppCrash.RecieveSignal. Could it be that the Usabilla crash event handler crashed in itself?