CFNetwork crash

How often are you seeing this crash? The reason I ask is that the crash report you posted is from Sep 2016 on iOS 10.0.1. If you’re seeing the crash frequently then you should have more recent crash reports, no?

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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Hi,

We're seeing many crashes like this. It's one of the most frequent type of crash in our app. Here's a recent example:

Hardware Model: iPhone9,3

Code Type: ARM-64

Date/Time: 2017-05-30T12:01:38Z

OS Version: iPhone OS 10.3.2 (14F89)

Exception Type: SIGSEGV

Exception Codes: SEGV_ACCERR at 0x0

Crashed Thread: 2

Thread 2 Crashed:

0 CFNetwork 0x000000018cb42d7c TubeManager::_onqueue_newTubeReady(Tube*, CFStreamError) + 984

1 CFNetwork 0x000000018cb42958 ___ZN11TubeManager12newTubeReadyEP4Tube13CFStreamError_block_invoke + 64

2 libdispatch.dylib 0x000000018b2ee9a0 _dispatch_client_callout + 12

3 libdispatch.dylib 0x000000018b2fa194 _dispatch_block_invoke_direct + 328

4 CFNetwork 0x000000018cc7bb30 RunloopBlockContext::_invoke_block(void const*, void*) + 32

5 CoreFoundation 0x000000018c312710 CFArrayApplyFunction + 64

6 CFNetwork 0x000000018cc7b9f0 RunloopBlockContext::perform() + 124

7 CFNetwork 0x000000018cc7cd34 MultiplexerSource::perform() + 308

8 CFNetwork 0x000000018cc7caa0 MultiplexerSource::_perform(void*) + 60

9 CoreFoundation 0x000000018c3e542c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 20

10 CoreFoundation 0x000000018c3e4d9c __CFRunLoopDoSources0 + 536

11 CoreFoundation 0x000000018c3e29a8 __CFRunLoopRun + 740

12 CoreFoundation 0x000000018c312da4 CFRunLoopRunSpecific + 420

13 CFNetwork 0x000000018cb1edf4 +[NSURLConnection(Loader) _resourceLoadLoop:] + 400

14 Foundation 0x000000018cf2a2d8 __NSThread__start__ + 992

15 libsystem_pthread.dylib 0x000000018b4f968c _pthread_body + 236

16 libsystem_pthread.dylib 0x000000018b4f959c _pthread_start + 280

17 libsystem_pthread.dylib 0x000000018b4f6cb4 thread_start + 0

I’ve been looking into crashes like this as part of a DTS incident (s. 665555146). The situation is complex because there seems to be more than one issue like this, some of which have been fixed in shipping system software, some of which have been fixed internally but the fix hasn’t shipped, and so of which are still being investigated.

It would help if I could see the full crash log. Can you post that?

Also, how does your app manage NSURLSession objects? Do you create one (or a small set) of session objects and use them for all your requests? Or do you create one session object per request? The latter is strongly recommended against in general, and I have a suspicion that it might be implicated in these problems. Although, to be crystal clear, that’s just a suspicion right now, I’m still gathering evidence.

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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

WWDC runs Mon, 5 Jun through to Fri, 9 Jun. During that time all of DTS will be at the conference, helping folks out face-to-face. http://developer.apple.com/wwdc/

Here's a selection of full crashlogs from our app involving TubeManager https://gist.github.com/kolyuchiy/57d6a6d9888af78df390b82181afa28e.

We have a number of NSURLSession objects created in different subsystems of the app: one for custom URL protocol, one for background tasks, one for loading images, etc.

Wow, that’s a pretty wide selection of crashes.

We have a number of NSURLSession objects created in different subsystems of the app: one for custom URL protocol, one for background tasks, one for loading images, etc.

Right, but you’re not allocating and invalidating sessions often, which is good. That gels with the crash reports you posted; none of them show evidence of the specific

TubeManager

Here’s a summary of what I can see in those crash logs:

• 2c38dd7ae5c96cdfc3e15364425baa04 — AFAICT this is not something we’ve seen before.

• 6d1440fac5af6b30c0aa508cb4ebfec7 — This is probably a known bug (r. 28007668) but it’s hard to be 100% sure without digging into the details.

• 81dcef8b6a6eaee0ac3f89fc1d825785 — Likewise, although for a different bug (r. 27636468).

• a062ed6990f8b7771bf2c20d95cd279c — AFAICT this is not something we’ve seen before.

• ddf28e616efebd94a185abcadde6a7ba — This looks like a dup of 81dcef8b6a6eaee0ac3f89fc1d825785.

The fact that you’re seeing all of these crashes in the same app makes me somewhat suspicious that there’s something else going on. The most obvious candidate here is memory corruption. Have you run your app’s test suite with Zombies enabled? What about address sanitiser? If not, I recommend you do both before continuing.

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—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

WWDC runs Mon, 5 Jun through to Fri, 9 Jun. During that time all of DTS will be at the conference, helping folks out face-to-face. http://developer.apple.com/wwdc/

Thanks a lot. We'll try to run our tests with Zombies and Address Sanitizer. I'll let you know of the results.

ssakthivel85 posted a full crash report about their original issue in another thread. I’m responding here because I want to keep things centralised.

c8755a4a8eccdc789bf775069de629957a6641d0 — While is being tracked as a separate issue (r. 28904079), I strongly suspect that the underlying cause is the same as an issue I noted above (r. 27636468)

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—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Hi eskimo,

Can you please clarify - what is the cause of CFNetwork background thread crash and how to avoid it?

Thanks,

Timur

+1 for this being our #1 crash and seemingly undiagnosable. Here's a recent example of ours:

Hardware Model:      iPhone8,2
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Date/Time:           2018-01-08 12:14:57.7053 -0500
Launch Time:         2018-01-08 08:30:24.3805 -0500
OS Version:          iPhone OS 11.2.1 (15C153)
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
Triggered by Thread:  12

Thread 12 Crashed:
0   CFNetwork                     0x0000000184800934 CFAllocatedReferenceCountedObject::_retainable_hash(void const*) + 0 (CFObject.cpp:204)
1   CoreFoundation                 0x0000000184099360 CFBasicHashFindBucket + 164 (CFBasicHash.c:455)
2   CoreFoundation                 0x00000001840992a0 CFDictionaryGetValue + 224 (CFDictionary.c:418)
3   CFNetwork                     0x0000000184831070 TubeManager::_onqueue_enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions, BaseAwaitingTube*) + 80 (CFObject.h:712)
4   CFNetwork                     0x0000000184831fd8 TubeManager::_onqueue_reenqueueAwaitingTube(BaseAwaitingTube*) + 112 (TubeManager.cpp:428)
5   CFNetwork                     0x0000000184832238 invocation function for block in TubeManager::_onqueue_newTubeReady(Tube*, CFStreamError) + 28 (TubeManager.cpp:681)
6   CFNetwork                     0x0000000184990904 invocation function for block in QCoreSchedulingSet::performAsync(void () block_pointer) const + 52 (CoreSchedulingSet.mm:189)
7   libdispatch.dylib             0x0000000183b56a54 _dispatch_call_block_and_release + 24 (init.c:994)
8   libdispatch.dylib             0x0000000183b56a14 _dispatch_client_callout + 16 (object.m:502)
9   libdispatch.dylib             0x0000000183b6096c _dispatch_queue_serial_drain$VARIANT$mp + 528 (inline_internal.h:2500)
10  libdispatch.dylib             0x0000000183b612fc _dispatch_queue_invoke$VARIANT$mp + 340 (queue.c:5302)
11  libdispatch.dylib             0x0000000183b60824 _dispatch_queue_serial_drain$VARIANT$mp + 200 (inline_internal.h:2539)
12  libdispatch.dylib             0x0000000183b612fc _dispatch_queue_invoke$VARIANT$mp + 340 (queue.c:5302)
13  libdispatch.dylib             0x0000000183b61d20 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp + 404 (queue.c:5920)
14  libdispatch.dylib             0x0000000183b6a03c _dispatch_workloop_worker_thread$VARIANT$mp + 644 (source.c:2529)
15  libsystem_pthread.dylib       0x0000000183dfef1c _pthread_wqthread + 932 (pthread.c:2207)
16  libsystem_pthread.dylib       0x0000000183dfeb6c start_wqthread + 4

+1 We have a lot of such crashes, all of them on iOS 11.2.1. Here's a last example:

#13. Crashed: com.apple.CFNetwork.LoaderQ
0  CFNetwork                      0x186c30934 CFAllocatedReferenceCountedObject::_retainable_hash(void const*) + 26
1  CoreFoundation                 0x1864c9360 CFBasicHashFindBucket + 164
2  CoreFoundation                 0x1864c92a0 CFDictionaryGetValue + 224
3  CFNetwork                      0x186c61070 TubeManager::_onqueue_enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions, BaseAwaitingTube*) + 80
4  CFNetwork                      0x186c61fd8 TubeManager::_onqueue_reenqueueAwaitingTube(BaseAwaitingTube*) + 112
5  CFNetwork                      0x186c62238 ___ZN11TubeManager21_onqueue_newTubeReadyEP4Tube13CFStreamError_block_invoke + 28
6  CFNetwork                      0x186dc0904 ___ZNK18QCoreSchedulingSet12performAsyncEU13block_pointerFvvE_block_invoke + 52
7  libdispatch.dylib              0x185f86a54 _dispatch_call_block_and_release + 24
8  libdispatch.dylib              0x185f86a14 _dispatch_client_callout + 16
9  libdispatch.dylib              0x185f9096c _dispatch_queue_serial_drain$VARIANT$mp + 528
10 libdispatch.dylib              0x185f912fc _dispatch_queue_invoke$VARIANT$mp + 340
11 libdispatch.dylib              0x185f90824 _dispatch_queue_serial_drain$VARIANT$mp + 200
12 libdispatch.dylib              0x185f912fc _dispatch_queue_invoke$VARIANT$mp + 340
13 libdispatch.dylib              0x185f91d20 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp + 404
14 libdispatch.dylib              0x185f9a03c _dispatch_workloop_worker_thread$VARIANT$mp + 644
15 libsystem_pthread.dylib        0x18622ef1c _pthread_wqthread + 932
16 libsystem_pthread.dylib        0x18622eb6c start_wqthread + 4

Us too we have a bunch of this mysterious crashes

Date/Time:           2017-11-10 17:31:09.0306 +0800
Launch Time:         2017-11-10 17:20:59.7179 +0800
OS Version:          iPhone OS 11.0.3 (15A432)
Baseband Version:    6.17.00
Report Version:      104
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Region Info: 0 is not in any region.  Bytes before following region: 4304535552
      REGION TYPE                      START - END             [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
---> 
      __TEXT                 0000000100920000-0000000100924000 [   16K] r-x/r-x SM=COW  ...B/AVA.app/AVA
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
Triggered by Thread:  3
Thread 0 name:
Thread 0:
0   libobjc.A.dylib               0x0000000181b8a6dc search_method_list(method_list_t const*, objc_selector*) + 4 (objc-runtime-new.h:102)
1   libobjc.A.dylib               0x0000000181b85adc getMethodNoSuper_nolock(objc_class*, objc_selector*) + 100 (objc-runtime-new.mm:4707)
2   libobjc.A.dylib               0x0000000181b85780 lookUpImpOrForward + 288 (objc-runtime-new.mm:4883)
3   libobjc.A.dylib               0x0000000181b90758 _objc_msgSend_uncached + 56
4   UIKit                         0x000000018ba72f28 -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:] + 196 (UIView.m:9663)
5   UIKit                         0x000000018bd557b0 __UIViewWillBeRemovedFromSuperview + 544 (UIView.m:9123)
6   UIKit                         0x000000018ba72674 -[UIView(Hierarchy) removeFromSuperview] + 100 (UIView.m:9218)
7   AVA                           0x000000010094bc9c __38-[SplashViewController viewDidAppear:]_block_invoke.99 + 44 (SplashViewController.m:265)
8   UIKit                         0x000000018baafd7c -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 764 (UIView.m:12112)
9   UIKit                         0x000000018baaf70c -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 312 (UIView.m:0)
10  UIKit                         0x000000018baaf418 -[UIViewAnimationState animationDidStop:finished:] + 296 (UIView.m:1977)
11  QuartzCore                    0x0000000186653d6c CA::Layer::run_animation_callbacks(void*) + 284 (CALayer.mm:6573)
12  libdispatch.dylib             0x0000000181fed048 _dispatch_client_callout + 16 (object.m:502)
13  libdispatch.dylib             0x0000000181ff9b74 _dispatch_main_queue_callback_4CF$VARIANT$mp + 1016 (inline_internal.h:2500)
14  CoreFoundation                0x000000018260ff20 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12 (CFRunLoop.c:1815)
15  CoreFoundation                0x000000018260dafc __CFRunLoopRun + 2012 (CFRunLoop.c:3111)
16  CoreFoundation                0x000000018252e2d8 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
17  GraphicsServices              0x00000001843bff84 GSEventRunModal + 100 (GSEvent.c:2245)
18  UIKit                         0x000000018badb880 UIApplicationMain + 208 (UIApplication.m:3948)
19  AVA                           0x000000010094a760 main + 88 (main.m:16)
20  libdyld.dylib                 0x000000018205256c start + 4
Thread 1 name:
Thread 1:
0   AVA                           0x00000001009893c4 -[ANSAnswersController eventQueue] + 0
1   AVA                           0x00000001009868d8 __39-[ANSAnswersController setupFlushTimer]_block_invoke + 36
2   Foundation                    0x0000000183032310 __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__ + 16 (NSOperation.m:1467)
3   Foundation                    0x0000000182f729e4 -[NSBlockOperation main] + 72 (NSOperation.m:1486)
4   Foundation                    0x0000000182f62620 -[__NSOperationInternal _start:] + 848 (NSOperation.m:830)
5   libdispatch.dylib             0x0000000181fed048 _dispatch_client_callout + 16 (object.m:502)
6   libdispatch.dylib             0x0000000181ff46c8 _dispatch_block_invoke_direct$VARIANT$mp + 288 (queue.c:3025)
7   libdispatch.dylib             0x0000000181fed048 _dispatch_client_callout + 16 (object.m:502)
8   libdispatch.dylib             0x0000000181ff46c8 _dispatch_block_invoke_direct$VARIANT$mp + 288 (queue.c:3025)
9   libdispatch.dylib             0x0000000181ff4574 dispatch_block_perform$VARIANT$mp + 104 (queue.c:2997)
10  Foundation                    0x0000000183033fe8 __NSOQSchedule_f + 376 (NSOperation.m:2086)
11  libdispatch.dylib             0x0000000181fed048 _dispatch_client_callout + 16 (object.m:502)
12  libdispatch.dylib             0x0000000181ff53d4 _dispatch_continuation_pop$VARIANT$mp + 428 (inline_internal.h:2500)
13  libdispatch.dylib             0x0000000181ff3cd4 _dispatch_async_redirect_invoke$VARIANT$mp + 604 (queue.c:3429)
14  libdispatch.dylib             0x0000000181ffa1c8 _dispatch_root_queue_drain + 596 (inline_internal.h:2539)
15  libdispatch.dylib             0x0000000181ff9f10 _dispatch_worker_thread3 + 120 (queue.c:6104)
16  libsystem_pthread.dylib       0x0000000182293130 _pthread_wqthread + 1268 (pthread.c:2286)
17  libsystem_pthread.dylib       0x0000000182292c30 start_wqthread + 4
Thread 2 name:
Thread 2:
0   libsystem_kernel.dylib        0x0000000182160bc4 mach_msg_trap + 8
1   libsystem_kernel.dylib        0x0000000182160a3c mach_msg + 72 (mach_msg.c:103)
2   CoreFoundation                0x000000018260fce4 __CFRunLoopServiceMachPort + 196 (CFRunLoop.c:2613)
3   CoreFoundation                0x000000018260d8b0 __CFRunLoopRun + 1424 (CFRunLoop.c:2969)
4   CoreFoundation                0x000000018252e2d8 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
5   Foundation                    0x0000000182f566e4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304 (NSRunLoop.m:367)
6   Foundation                    0x0000000182f75afc -[NSRunLoop(NSRunLoop) runUntilDate:] + 96 (NSRunLoop.m:411)
7   UIKit                         0x000000018c62702c -[UIEventFetcher threadMain] + 136 (UIEventFetcher.m:422)
8   Foundation                    0x0000000183057860 __NSThread__start__ + 996 (NSThread.m:1181)
9   libsystem_pthread.dylib       0x000000018229432c _pthread_body + 308 (pthread.c:740)
10  libsystem_pthread.dylib       0x00000001822941f8 _pthread_start + 312 (pthread.c:799)
11  libsystem_pthread.dylib       0x0000000182292c38 thread_start + 4
Thread 3 name:
Thread 3 Crashed:
0   CFNetwork                     0x0000000182c8c178 CFAllocatedReferenceCountedObject::_retainable_hash(void const*) + 0 (CFObject.cpp:204)
1   CoreFoundation                0x00000001825277e0 CFBasicHashFindBucket + 164 (CFBasicHash.c:455)
2   CoreFoundation                0x0000000182527720 CFDictionaryGetValue + 224 (CFDictionary.c:418)
3   CFNetwork                     0x0000000182cbc62c TubeManager::_onqueue_enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions, BaseAwaitingTube*) + 80 (CFObject.h:712)
4   CFNetwork                     0x0000000182cbd594 TubeManager::_onqueue_reenqueueAwaitingTube(BaseAwaitingTube*) + 112 (TubeManager.cpp:428)
5   CFNetwork                     0x0000000182cbd7f4 ___ZN11TubeManager21_onqueue_newTubeReadyEP4Tube13CFStreamError_block_invoke + 28 (TubeManager.cpp:681)
6   CFNetwork                     0x0000000182e177f0 ___ZNK18QCoreSchedulingSet12performAsyncEU13block_pointerFvvE_block_invoke + 52 (CoreSchedulingSet.mm:187)
7   libdispatch.dylib             0x0000000181fed088 _dispatch_call_block_and_release + 24 (init.c:994)
8   libdispatch.dylib             0x0000000181fed048 _dispatch_client_callout + 16 (object.m:502)
9   libdispatch.dylib             0x0000000181ff6e48 _dispatch_queue_serial_drain$VARIANT$mp + 528 (inline_internal.h:2500)
10  libdispatch.dylib             0x0000000181ff77d8 _dispatch_queue_invoke$VARIANT$mp + 340 (queue.c:5302)
11  libdispatch.dylib             0x0000000181ff6d00 _dispatch_queue_serial_drain$VARIANT$mp + 200 (inline_internal.h:2539)
12  libdispatch.dylib             0x0000000181ff77d8 _dispatch_queue_invoke$VARIANT$mp + 340 (queue.c:5302)
13  libdispatch.dylib             0x0000000181ff8200 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp + 400 (queue.c:5920)
14  libdispatch.dylib             0x00000001820004a0 _dispatch_workloop_worker_thread$VARIANT$mp + 644 (source.c:2515)
15  libsystem_pthread.dylib       0x0000000182292fe0 _pthread_wqthread + 932 (pthread.c:2207)
16  libsystem_pthread.dylib       0x0000000182292c30 start_wqthread + 4
Thread 4 name:
Thread 4:
0   libsystem_kernel.dylib        0x0000000182160bc4 mach_msg_trap + 8
1   libsystem_kernel.dylib        0x0000000182160a3c mach_msg + 72 (mach_msg.c:103)
2   CoreFoundation                0x000000018260fce4 __CFRunLoopServiceMachPort + 196 (CFRunLoop.c:2613)
3   CoreFoundation                0x000000018260d8b0 __CFRunLoopRun + 1424 (CFRunLoop.c:2969)
4   CoreFoundation                0x000000018252e2d8 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
5   Foundation                    0x0000000182f566e4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304 (NSRunLoop.m:367)
6   Foundation                    0x0000000182fa862c -[NSRunLoop(NSRunLoop) run] + 88 (NSRunLoop.m:389)
7   AVA                           0x00000001009ba44c +[GAI threadMain:] + 64
8   Foundation                    0x0000000183057860 __NSThread__start__ + 996 (NSThread.m:1181)
9   libsystem_pthread.dylib       0x000000018229432c _pthread_body + 308 (pthread.c:740)
10  libsystem_pthread.dylib       0x00000001822941f8 _pthread_start + 312 (pthread.c:799)
11  libsystem_pthread.dylib       0x0000000182292c38 thread_start + 4
Thread 5 name:
Thread 5:
0   libsystem_kernel.dylib        0x0000000182160bc4 mach_msg_trap + 8
1   libsystem_kernel.dylib        0x0000000182160a3c mach_msg + 72 (mach_msg.c:103)
2   CoreFoundation                0x000000018260fce4 __CFRunLoopServiceMachPort + 196 (CFRunLoop.c:2613)
3   CoreFoundation                0x000000018260d8b0 __CFRunLoopRun + 1424 (CFRunLoop.c:2969)
4   CoreFoundation                0x000000018252e2d8 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
5   CFNetwork                     0x0000000182c97b40 +[NSURLConnection(Loader) _resourceLoadLoop:] + 404 (NSURLConnection.mm:367)
6   Foundation                    0x0000000183057860 __NSThread__start__ + 996 (NSThread.m:1181)
7   libsystem_pthread.dylib       0x000000018229432c _pthread_body + 308 (pthread.c:740)
8   libsystem_pthread.dylib       0x00000001822941f8 _pthread_start + 312 (pthread.c:799)
9   libsystem_pthread.dylib       0x0000000182292c38 thread_start + 4
Thread 6 name:
Thread 6:
0   libsystem_kernel.dylib        0x0000000182160bc4 mach_msg_trap + 8
1   libsystem_kernel.dylib        0x0000000182160a3c mach_msg + 72 (mach_msg.c:103)
2   AVA                           0x000000010095db28 CLSMachExceptionServer + 1180
3   libsystem_pthread.dylib       0x000000018229432c _pthread_body + 308 (pthread.c:740)
4   libsystem_pthread.dylib       0x00000001822941f8 _pthread_start + 312 (pthread.c:799)
5   libsystem_pthread.dylib       0x0000000182292c38 thread_start + 4
Thread 7 name:
Thread 7:
0   libsystem_kernel.dylib        0x0000000182160c18 semaphore_timedwait_trap + 8
1   libdispatch.dylib             0x0000000181fef4d0 _dispatch_sema4_timedwait$VARIANT$mp + 84 (lock.c:149)
2   libdispatch.dylib             0x0000000181fefd40 _dispatch_semaphore_wait_slow + 72 (semaphore.c:127)
3   CoreLocation                  0x0000000188b9aab0 CLClientInvokeCallback(__CLClient*, CLClientEvent, objc_object*) + 396 (CLClient.mm:775)
4   CoreLocation                  0x0000000188ba0544 _CLClientHandleMessage(__CLClient*, std::__1::shared_ptr<CLConnectionMessage>) + 624 (CLClient.mm:1268)
5   CoreLocation                  0x0000000188ba0274 ___ZL25_CLClientCreateConnectionP10__CLClient_block_invoke + 120 (CLClient.mm:852)
6   CoreLocation                  0x0000000188bf7f38 ___ZN18CLConnectionClient32setDefaultMessageHandler_onQueueEU13block_pointerFvNSt3__110shared_ptrI19CLConnectionMessageEEE_block_invoke + 180 (CLConnectionClient.mm:197)
7   CoreLocation                  0x0000000188bf430c CLConnection::handleMessage(std::__1::shared_ptr<CLConnectionMessage>) + 156 (CLConnection.mm:129)
8   CoreLocation                  0x0000000188bf4230 ___ZN12CLConnection23initializeConnection_nlEv_block_invoke + 60 (CLConnection.mm:110)
9   CoreLocation                  0x0000000188bf5ac4 ___ZL15setEventHandlerPU24objcproto13OS_xpc_object8NSObjectU13block_pointerFvNSt3__110shared_ptrI19CLConnectionMessageEEEU13block_pointerFvvES9_PS9__block_invoke + 424 (CLConnection.mm:194)
10  libxpc.dylib                  0x00000001822ce300 _xpc_connection_call_event_handler + 68 (connection.c:0)
11  libxpc.dylib                  0x00000001822cbcb0 _xpc_connection_mach_event + 984 (connection.c:1203)
12  libdispatch.dylib             0x0000000181fed118 _dispatch_client_callout4 + 16 (object.m:542)
13  libdispatch.dylib             0x00000001820038b8 _dispatch_mach_msg_invoke$VARIANT$mp + 356 (mach.c:2169)
14  libdispatch.dylib             0x0000000181ff6d00 _dispatch_queue_serial_drain$VARIANT$mp + 200 (inline_internal.h:2539)
15  libdispatch.dylib             0x0000000182004534 _dispatch_mach_invoke$VARIANT$mp + 952 (mach.c:2467)
16  libdispatch.dylib             0x0000000181ff6d00 _dispatch_queue_serial_drain$VARIANT$mp + 200 (inline_internal.h:2539)
17  libdispatch.dylib             0x0000000181ff77d8 _dispatch_queue_invoke$VARIANT$mp + 340 (queue.c:5302)
18  libdispatch.dylib             0x0000000181ff6d00 _dispatch_queue_serial_drain$VARIANT$mp + 200 (inline_internal.h:2539)
19  libdispatch.dylib             0x0000000181ff77d8 _dispatch_queue_invoke$VARIANT$mp + 340 (queue.c:5302)
20  libdispatch.dylib             0x0000000181ff8200 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp + 400 (queue.c:5920)
21  libdispatch.dylib             0x00000001820004a0 _dispatch_workloop_worker_thread$VARIANT$mp + 644 (source.c:2515)
22  libsystem_pthread.dylib       0x0000000182292fe0 _pthread_wqthread + 932 (pthread.c:2207)
23  libsystem_pthread.dylib       0x0000000182292c30 start_wqthread + 4
Thread 8:
0   libsystem_kernel.dylib        0x0000000182181150 __psynch_cvwait + 8
1   libsystem_pthread.dylib       0x0000000182296d40 _pthread_cond_wait$VARIANT$mp + 640 (pthread_cond.c:579)
2   libc++.1.dylib                0x0000000181affea4 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 24 (__threading_support:278)
3   JavaScriptCore                0x00000001898acb30 void std::__1::condition_variable_any::wait<std::__1::unique_lock<bmalloc::Mutex> >(std::__1::unique_lock<bmalloc::Mutex>&) + 96 (condition_variable:202)
4   JavaScriptCore                0x00000001898aca58 bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadRunLoop() + 172 (condition_variable:211)
5   JavaScriptCore                0x00000001898acdbc void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*), bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*> >(void*) + 44 (type_traits:4291)
6   libsystem_pthread.dylib       0x000000018229432c _pthread_body + 308 (pthread.c:740)
7   libsystem_pthread.dylib       0x00000001822941f8 _pthread_start + 312 (pthread.c:799)
8   libsystem_pthread.dylib       0x0000000182292c38 thread_start + 4
Thread 9 name:
Thread 9:
0   libsystem_kernel.dylib        0x0000000182160bc4 mach_msg_trap + 8
1   libsystem_kernel.dylib        0x0000000182160a3c mach_msg + 72 (mach_msg.c:103)
2   CoreFoundation                0x000000018260fce4 __CFRunLoopServiceMachPort + 196 (CFRunLoop.c:2613)
3   CoreFoundation                0x000000018260d8b0 __CFRunLoopRun + 1424 (CFRunLoop.c:2969)
4   CoreFoundation                0x000000018252e2d8 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
5   WebCore                       0x000000018a37dac4 RunWebThread(void*) + 456 (WebCoreThread.mm:694)
6   libsystem_pthread.dylib       0x000000018229432c _pthread_body + 308 (pthread.c:740)
7   libsystem_pthread.dylib       0x00000001822941f8 _pthread_start + 312 (pthread.c:799)
8   libsystem_pthread.dylib       0x0000000182292c38 thread_start + 4
Thread 10:
0   libsystem_pthread.dylib       0x0000000182292c2c start_wqthread + 0
Thread 3 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x00000001c4364150   x3: 0x000000016f822618
    x4: 0x00000001c42d1800   x5: 0x000000000000001a   x6: 0x0000000151d1e2d0   x7: 0x0000000000000a00
    x8: 0x0000000000000005   x9: 0x0000000182c8c178  x10: 0x0000000152002200  x11: 0x0000000000000001
   x12: 0x00000000000008ff  x13: 0x0000000000000100  x14: 0x0000000000000001  x15: 0xffffffffffffffff
   x16: 0x000000018228daa0  x17: 0x0000000181b9b0e0  x18: 0x0000000000000000  x19: 0x0000000000000000
   x20: 0x00000001c426f180  x21: 0x0000000000000000  x22: 0x0000000000000001  x23: 0x00000001b303b000
   x24: 0x00000001c446c880  x25: 0x0000000000000000  x26: 0x0000000000000000  x27: 0x0000000000000000
   x28: 0x00000001c40fde00   fp: 0x000000016f822510   lr: 0x00000001825277e0
    sp: 0x000000016f8224a0   pc: 0x0000000182c8c178 cpsr: 0x60000000
Binary Images:
0x100920000 - 0x100a97fff AVA arm64  <dd61ab0eb99933c5871945637a456be5> /var/containers/Bundle/Application/022ACC19-CF9D-4853-936A-C8CA578EB5FB/AVA.app/AVA
0x100b9c000 - 0x100bdbfff dyld arm64  <113803ec7f6936e6b06abef57a8755fd> /usr/lib/dyld
0x181af6000 - 0x181af7fff libSystem.B.dylib arm64  <140fcf0af41038bcbcc9143449b0cab5> /usr/lib/libSystem.B.dylib
0x181af8000 - 0x181b51fff libc++.1.dylib arm64  <b5750788b63b3612b8bbfb2da1e3dbca> /usr/lib/libc++.1.dylib
0x181b52000 - 0x181b72fff libc++abi.dylib arm64  <9dc64e3f9d1a31ffbd425695d02c3fea> /usr/lib/libc++abi.dylib
0x181b74000 - 0x181f6bfff libobjc.A.dylib arm64  <d5f3817d3f4e3326b690688e1484ec38> /usr/lib/libobjc.A.dylib
0x181f6c000 - 0x181f70fff libcache.dylib arm64  <646be68098ea3b7ea9fe9a99028b19b2> /usr/lib/system/libcache.dylib
0x181f71000 - 0x181f7cfff libcommonCrypto.dylib arm64  <df61da1e49933adf97238737fd34f44b> /usr/lib/system/libcommonCrypto.dylib
0x181f7d000 - 0x181f80fff libcompiler_rt.dylib arm64  <d269360ab8553644a82a1fb5ce9d9597> /usr/lib/system/libcompiler_rt.dylib
0x181f81000 - 0x181f88fff libcopyfile.dylib arm64  <9ec7f9a0ad703544abc0297192ab7294> /usr/lib/system/libcopyfile.dylib
0x181f89000 - 0x181febfff libcorecrypto.dylib arm64  <b3ca6ff1dc4d3ad59fe74daec704bfea> /usr/lib/system/libcorecrypto.dylib
0x181fec000 - 0x182050fff libdispatch.dylib arm64  <d16541550d403e77967bd529061c87a4> /usr/lib/system/libdispatch.dylib
0x182051000 - 0x18206bfff libdyld.dylib arm64  <07ea3edae26b33ccb1e88ef771ff7ee4> /usr/lib/system/libdyld.dylib
0x18206c000 - 0x18206cfff liblaunch.dylib arm64  <a2e68c7089ba360e9fe1c2f71cef033b> /usr/lib/system/liblaunch.dylib
0x18206d000 - 0x182072fff libmacho.dylib arm64  <f384756091413dc18d540a60b1d78863> /usr/lib/system/libmacho.dylib
0x182073000 - 0x182074fff libremovefile.dylib arm64  <dec463ad2922349d9447681f0277a592> /usr/lib/system/libremovefile.dylib
0x182075000 - 0x18208cfff libsystem_asl.dylib arm64  <efd2bb6daeb832dda9301f476f2b200f> /usr/lib/system/libsystem_asl.dylib
0x18208d000 - 0x18208dfff libsystem_blocks.dylib arm64  <26a917fcb90131d9b897b72c4552d679> /usr/lib/system/libsystem_blocks.dylib
0x18208e000 - 0x18210bfff libsystem_c.dylib arm64  <8ea1d364be023157b5d8bed8ebc9a313> /usr/lib/system/libsystem_c.dylib
0x18210c000 - 0x182110fff libsystem_configuration.dylib arm64  <8cf0b157c3f03be3b29a508f00a9d3b5> /usr/lib/system/libsystem_configuration.dylib
0x182111000 - 0x182116fff libsystem_containermanager.dylib arm64  <8bc89cd3ae6630b685e301fad855596e> /usr/lib/system/libsystem_containermanager.dylib
0x182117000 - 0x182118fff libsystem_coreservices.dylib arm64  <d98d116a800d3f33928bbfc3dd08c31f> /usr/lib/system/libsystem_coreservices.dylib
0x182119000 - 0x18211afff libsystem_darwin.dylib arm64  <be175cfebf1b31a3b332885778dc6847> /usr/lib/system/libsystem_darwin.dylib
0x18211b000 - 0x182121fff libsystem_dnssd.dylib arm64  <14d0f03f303836c7a7185668ce7b0522> /usr/lib/system/libsystem_dnssd.dylib
0x182122000 - 0x18215ffff libsystem_info.dylib arm64  <9dc8ba8705e033cb8d2c02e3bdb2f0bf> /usr/lib/system/libsystem_info.dylib
0x182160000 - 0x182187fff libsystem_kernel.dylib arm64  <05b1da08eba13342b0a776a29ad02c23> /usr/lib/system/libsystem_kernel.dylib
0x182188000 - 0x1821b5fff libsystem_m.dylib arm64  <11aee15148e2399eae7bacf96ba51267> /usr/lib/system/libsystem_m.dylib
0x1821b6000 - 0x1821d0fff libsystem_malloc.dylib arm64  <902bc46c74203a2f9f961488f20887a4> /usr/lib/system/libsystem_malloc.dylib
0x1821d1000 - 0x182270fff libsystem_network.dylib arm64  <79ef5028a0113ab8a0ae20aa77ad9862> /usr/lib/system/libsystem_network.dylib
0x182271000 - 0x18227cfff libsystem_networkextension.dylib arm64  <1950c6f6d72e3148a77c04bcfb744592> /usr/lib/system/libsystem_networkextension.dylib
0x18227d000 - 0x182287fff libsystem_notify.dylib arm64  <266f38a610d23eed98864a40a20ccaa8> /usr/lib/system/libsystem_notify.dylib
0x182288000 - 0x182291fff libsystem_platform.dylib arm64  <d622670234e637039351770fbd25a89e> /usr/lib/system/libsystem_platform.dylib
0x182292000 - 0x1822a1fff libsystem_pthread.dylib arm64  <79349704b029373da3a4116da895eadc> /usr/lib/system/libsystem_pthread.dylib
0x1822a2000 - 0x1822a5fff libsystem_sandbox.dylib arm64  <a850a46bf1de3716988bd1b093333387> /usr/lib/system/libsystem_sandbox.dylib
0x1822a6000 - 0x1822adfff libsystem_symptoms.dylib arm64  <29ef743636383bb9b19a6592a581e279> /usr/lib/system/libsystem_symptoms.dylib
0x1822ae000 - 0x1822c1fff libsystem_trace.dylib arm64  <3185cddeca983d5d9ca01a9998e0c5ae> /usr/lib/system/libsystem_trace.dylib
0x1822c2000 - 0x1822c7fff libunwind.dylib arm64  <1bbecec4400b3fa19f176d1a2c35799e> /usr/lib/system/libunwind.dylib
0x1822c8000 - 0x1822c8fff libvminterpose.dylib arm64  <2be4e5790f673386a2329d2ee621d20e> /usr/lib/system/libvminterpose.dylib
0x1822c9000 - 0x1822f2fff libxpc.dylib arm64  <a75cf23f010b383aaa4a5a162f4da1f8> /usr/lib/system/libxpc.dylib
0x1822f3000 - 0x182513fff libicucore.A.dylib arm64  <f3544fde32dc3b9790b320e43af949d1> /usr/lib/libicucore.A.dylib
0x182514000 - 0x182525fff libz.1.dylib arm64  <3d5ad144ebf234f08f8fa6317ed61e38> /usr/lib/libz.1.dylib
0x182526000 - 0x1828b9fff CoreFoundation arm64  <89e52e2bd28f3d3ebb800ed0d39a067f> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x1828ba000 - 0x1828cafff libbsm.0.dylib arm64  <71af2a23cc5b376f9545b56f43ab78c1> /usr/lib/libbsm.0.dylib
0x1828cb000 - 0x1828cbfff libenergytrace.dylib arm64  <0462669dfa083154bc08a2d0ca04d6bc> /usr/lib/libenergytrace.dylib
0x1828cc000 - 0x182951fff IOKit arm64  <d8fc36d6ed573990908cf638598ad2cb> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x182952000 - 0x182a3bfff libxml2.2.dylib arm64  <375572194230337fa5612241c5cc0e70> /usr/lib/libxml2.2.dylib
0x182a3c000 - 0x182a49fff libbz2.1.0.dylib arm64  <15b80930d08f330fba800e8b567d8dcf> /usr/lib/libbz2.1.0.dylib
0x182a4a000 - 0x182a62fff liblzma.5.dylib arm64  <739cf02ed7013b1d96266ccfef8c4094> /usr/lib/liblzma.5.dylib
0x182a63000 - 0x182bc1fff libsqlite3.dylib arm64  <2482d47050d53820ba2c94e7069eba3c> /usr/lib/libsqlite3.dylib
0x182bc2000 - 0x182be8fff libMobileGestalt.dylib arm64  <41538d7639dd395cbcb878ac0249be34> /usr/lib/libMobileGestalt.dylib
0x182be9000 - 0x182f49fff CFNetwork arm64  <d800884ac3643fd3985b4f9901874f31> /System/Library/Frameworks/CFNetwork.framework/CFNetwork
0x182f4a000 - 0x183243fff Foundation arm64  <ef884462ca233774a8bdeb9d443acda9> /System/Library/Frameworks/Foundation.framework/Foundation
0x183244000 - 0x18332ffff Security arm64  <ce16b46d20563137b3607153e60bc18c> /System/Library/Frameworks/Security.framework/Security
0x183330000 - 0x18339cfff SystemConfiguration arm64  <d31a0885e9eb33e887c18f38e9727486> /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration
0x18339d000 - 0x1833d3fff libCRFSuite.dylib arm64  <e5d8881b2eb23a7d8856548df3ad9d42> /usr/lib/libCRFSuite.dylib
0x1833d4000 - 0x1833d4fff libapple_crypto.dylib arm64  <af92c27fa2b837c189273166be134df6> /usr/lib/libapple_crypto.dylib
0x1833d5000 - 0x1833ebfff libapple_nghttp2.dylib arm64  <4586415f57893ea89f4dee5aa101fa0c> /usr/lib/libapple_nghttp2.dylib
0x1833ec000 - 0x183415fff libarchive.2.dylib arm64  <fba52cfa1567328f8dc7e63c6ef28cd4> /usr/lib/libarchive.2.dylib
0x183416000 - 0x1834bffff libboringssl.dylib arm64  <f755942217a93c34a13a38bf71bc276c> /usr/lib/libboringssl.dylib
0x1834c0000 - 0x1834d7fff libcoretls.dylib arm64  <09e0323cf36e3563abb6fa6b5dbef304> /usr/lib/libcoretls.dylib
0x1834d8000 - 0x1834d9fff libcoretls_cfhelpers.dylib arm64  <e1d479c70217395e999d44f1dd68d70f> /usr/lib/libcoretls_cfhelpers.dylib
0x1834da000 - 0x1834dbfff liblangid.dylib arm64  <bf7d0a0f22b83733b6a495859601ba29> /usr/lib/liblangid.dylib
0x1834dc000 - 0x1835adfff libnetwork.dylib arm64  <b5303855f78d348d829f81a1725e052b> /usr/lib/libnetwork.dylib
0x1835ae000 - 0x1835e0fff libpcap.A.dylib arm64  <34293864f7e331e284237f1278adcf24> /usr/lib/libpcap.A.dylib
0x1835e1000 - 0x183616fff libusrtcp.dylib arm64  <b86ddfb022ed3bea998aeb1d0d339075> /usr/lib/libusrtcp.dylib
0x183617000 - 0x183620fff IOSurface arm64  <2b4efa85ccc8321f88c86f111a5354cb> /System/Library/Frameworks/IOSurface.framework/IOSurface
0x183621000 - 0x1836c6fff libBLAS.dylib arm64  <8eef4271b09c30559e7964cd2a5ea258> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libBLAS.dylib
0x1836c7000 - 0x1839f6fff libLAPACK.dylib arm64  <f6bb57872aac3aa5897d506b120be14d> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libLAPACK.dylib
0x1839f7000 - 0x183c63fff vImage arm64  <1d02d86de0fa39388148068e1517099c> /System/Library/Frameworks/Accelerate.framework/Frameworks/vImage.framework/vImage
0x183c64000 - 0x183c75fff libSparseBLAS.dylib arm64  <bc10c7c259e93f2c9e5508b812a969dc> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libSparseBLAS.dylib
0x183c76000 - 0x183c9afff libvMisc.dylib arm64  <9744827de4e930b3a9effb653df2d860> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libvMisc.dylib
0x183c9b000 - 0x183cc6fff libBNNS.dylib arm64  <af5bb641dca3387e91b6936cc28e3aeb> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libBNNS.dylib
0x183cc7000 - 0x183cdcfff libLinearAlgebra.dylib arm64  <a8348fb8d2c73226b491716566b0210f> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libLinearAlgebra.dylib
0x183cdd000 - 0x183ce1fff libQuadrature.dylib arm64  <7469159bd64738dab467d905432295fe> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libQuadrature.dylib
0x183ce2000 - 0x183d38fff libSparse.dylib arm64  <bee3a005dcc63eef94da6f43c2a19dd6> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libSparse.dylib
0x183d39000 - 0x183db1fff libvDSP.dylib arm64  <f2325f789f4b34cca0862961c3d81aa1> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libvDSP.dylib
0x183db2000 - 0x183db2fff vecLib arm64  <1cfa494bc66730d79c6440df00e68a49> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/vecLib
0x183db3000 - 0x183db3fff Accelerate arm64  <4e55f70c680a3eab9d72f569fea9f1f2> /System/Library/Frameworks/Accelerate.framework/Accelerate
0x183db4000 - 0x183dc9fff libcompression.dylib arm64  <bbc80f2c3b5e36268713288c7dde44ca> /usr/lib/libcompression.dylib
0x183dca000 - 0x18430dfff CoreGraphics arm64  <9c5a4cc9cd6c30b8bd95ebe86faaedd6> /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics
0x18430e000 - 0x184316fff IOAccelerator arm64  <e84acc9de34e3e3588d5736aceb0f1b0> /System/Library/PrivateFrameworks/IOAccelerator.framework/IOAccelerator
0x184317000 - 0x18431afff libCoreFSCache.dylib arm64  <dc099a1be9be389fb910578f849d3b3f> /System/Library/Frameworks/OpenGLES.framework/libCoreFSCache.dylib
0x18431b000 - 0x1843b4fff Metal arm64  <32f4a1c23d643777ba2fc542dd9d0f74> /System/Library/Frameworks/Metal.framework/Metal
0x1843b5000 - 0x1843c8fff GraphicsServices arm64  <90fde06d13af38fd9e261fce7d8f90a1> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x1843c9000 - 0x18451ffff MobileCoreServices arm64  <4ed82a0bc37238b48b208bc9496e9711> /System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices
0x184520000 - 0x184522fff IOSurfaceAccelerator arm64  <dbd7aeebb43b39c2b06d1a20766d6e6d> /System/Library/PrivateFrameworks/IOSurfaceAccelerator.framework/IOSurfaceAccelerator
0x184523000 - 0x184564fff AppleJPEG arm64  <7b40250ad3d9310c9dfb3f1c3e4ec3cc> /System/Library/PrivateFrameworks/AppleJPEG.framework/AppleJPEG
0x184565000 - 0x184b10fff ImageIO arm64  <16609f0edb3732f08011d2b05e690f50> /System/Library/Frameworks/ImageIO.framework/ImageIO
0x184b11000 - 0x184b75fff BaseBoard arm64  <b72f4e6b8fbd3b328263f1b2421e2604> /System/Library/PrivateFrameworks/BaseBoard.framework/BaseBoard
0x184b76000 - 0x184b8cfff AssertionServices arm64  <a0f1665376003b6db7739d5afe06d356> /System/Library/PrivateFrameworks/AssertionServices.framework/AssertionServices
0x184b8d000 - 0x184b95fff CorePhoneNumbers arm64  <ad77bfdb46823e67a5991e1271f53d76> /System/Library/PrivateFrameworks/CorePhoneNumbers.framework/CorePhoneNumbers
0x184b96000 - 0x184bdafff AppSupport arm64  <f999256e2a853694b8e47c85a1f07204> /System/Library/PrivateFrameworks/AppSupport.framework/AppSupport
0x184bdb000 - 0x184bf3fff CrashReporterSupport arm64  <e66a0237b1353ae79f02410282b6011f> /System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport
0x184bf4000 - 0x184bf9fff AggregateDictionary arm64  <5654167da62a3276a6cdd2f744ff91bc> /System/Library/PrivateFrameworks/AggregateDictionary.framework/AggregateDictionary
0x184bfa000 - 0x184c7bfff libTelephonyUtilDynamic.dylib arm64  <9608c7a970b33206ada3e665daa6f1c2> /usr/lib/libTelephonyUtilDynamic.dylib
0x184c7c000 - 0x184c9bfff ProtocolBuffer arm64  <f44c2b8b385a3c98b4c2540234137c92> /System/Library/PrivateFrameworks/ProtocolBuffer.framework/ProtocolBuffer
0x184c9c000 - 0x184cc7fff MobileKeyBag arm64  <fa3937700bab3d7ba1eabbfd089b2e6d> /System/Library/PrivateFrameworks/MobileKeyBag.framework/MobileKeyBag
0x184cc8000 - 0x184cfcfff BackBoardServices arm64  <4a9f74cc50153c7a93c3c0ef137daf08> /System/Library/PrivateFrameworks/BackBoardServices.framework/BackBoardServices
0x184cfd000 - 0x184d58fff FrontBoardServices arm64  <b5ca1c4ec4d73a5bbca449f01c48a5d4> /System/Library/PrivateFrameworks/FrontBoardServices.framework/FrontBoardServices
0x184d59000 - 0x184d95fff SpringBoardServices arm64  <ca05f8086f293fdeaabb9aaf5e6c991b> /System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices
0x184d96000 - 0x184da4fff PowerLog arm64  <e3b5890a70dc3f6baa301612b2e9ddf2> /System/Library/PrivateFrameworks/PowerLog.framework/PowerLog
0x184da5000 - 0x184dc0fff CommonUtilities arm64  <51cca92ec2ee309e9731b5725efab52f> /System/Library/PrivateFrameworks/CommonUtilities.framework/CommonUtilities
0x184dc1000 - 0x184dcbfff liblockdown.dylib arm64  <24b82bc31836376f865086df944c8760> /usr/lib/liblockdown.dylib
0x184dcc000 - 0x1850cbfff CoreData arm64  <ecccb7ed0d313484956ec7a05758f1fb> /System/Library/Frameworks/CoreData.framework/CoreData
0x1850cc000 - 0x1850d2fff TCC arm64  <55df2388deb036d0b40092217b2b1903> /System/Library/PrivateFrameworks/TCC.framework/TCC
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0x1943c2000 - 0x1943dafff CoreInterest arm64  <f0cf96afd0ed3f8498f70aab30dcb782> /System/Library/PrivateFrameworks/CoreInterest.framework/CoreInterest
0x1943db000 - 0x194639fff SafariShared arm64  <5115344b3d5530968dbc4f745946b482> /System/Library/PrivateFrameworks/SafariShared.framework/SafariShared
0x19463a000 - 0x194674fff WebUI arm64  <e0777c4e00a83ddbb30e38b75cbc9c7b> /System/Library/PrivateFrameworks/WebUI.framework/WebUI
0x1946f5000 - 0x1946fefff MobileStorage arm64  <a6b63b50a1b631b096d560ef8fa4a42c> /System/Library/PrivateFrameworks/MobileStorage.framework/MobileStorage
0x1946ff000 - 0x194741fff ContentIndex arm64  <9b31e99d58653879810d69347780ea02> /System/Library/PrivateFrameworks/ContentIndex.framework/ContentIndex
0x194742000 - 0x194a35fff ImageCapture arm64  <acba3d5936d138d78ecea59f81170c48> /System/Library/PrivateFrameworks/ImageCapture.framework/ImageCapture
0x194a36000 - 0x194c05fff NeutrinoCore arm64  <fc1a34b2d0e430beb6451161a2c7a8fc> /System/Library/PrivateFrameworks/NeutrinoCore.framework/NeutrinoCore
0x194c06000 - 0x194c1cfff iPhotoMigrationSupport arm64  <3de19f1695c43e05a72bbb00cf41b63c> /System/Library/PrivateFrameworks/iPhotoMigrationSupport.framework/iPhotoMigrationSupport
0x194c1d000 - 0x194c2efff DiagnosticExtensions arm64  <34393765cb7b3a918098cba514f4c319> /System/Library/PrivateFrameworks/DiagnosticExtensions.framework/DiagnosticExtensions
0x194ef5000 - 0x194f8cfff PhotoLibrary arm64  <6d46cbff684336618b0da977e21dfc85> /System/Library/PrivateFrameworks/PhotoLibrary.framework/PhotoLibrary
0x194f8d000 - 0x1952d9fff PhotosUICore arm64  <42003cc0de5c39509b6829d30f845a4b> /System/Library/PrivateFrameworks/PhotosUICore.framework/PhotosUICore
0x195380000 - 0x195386fff LinguisticData arm64  <3a3fd60cbd5b35d090e3c0f08aa29c6f> /System/Library/PrivateFrameworks/LinguisticData.framework/LinguisticData
0x195387000 - 0x19539efff NeutrinoKit arm64  <729234b048d1347a950395f1ac527d3b> /System/Library/PrivateFrameworks/NeutrinoKit.framework/NeutrinoKit
0x19539f000 - 0x195429fff PhotoEditSupport arm64  <5ccd672dd04e3826ba0230d616f9e265> /System/Library/PrivateFrameworks/PhotoEditSupport.framework/PhotoEditSupport
0x19542a000 - 0x19543cfff SiriTasks arm64  <fcc7ef4a9c8936ce918fd76dfde5d6e0> /System/Library/PrivateFrameworks/SiriTasks.framework/SiriTasks
0x19543d000 - 0x19585dfff PhotosUI arm64  <1467d09309353ab2af66c602cb4359d2> /System/Library/Frameworks/PhotosUI.framework/PhotosUI
0x195b29000 - 0x195b4afff GenerationalStorage arm64  <76d6425e40f2371fb9a85f6dd1f4ea46> /System/Library/PrivateFrameworks/GenerationalStorage.framework/GenerationalStorage
0x195f8b000 - 0x196059fff CoreHandwriting arm64  <c44ed5208a0c3b4e9390e3d391d9bfb9> /System/Library/PrivateFrameworks/CoreHandwriting.framework/CoreHandwriting
0x1961bd000 - 0x1961c5fff AddressBookUI arm64  <97439ebe295e3d40bb1de25f463be5a8> /System/Library/Frameworks/AddressBookUI.framework/AddressBookUI
0x1965f6000 - 0x19671ffff PencilKit arm64  <8ad0f98e99b33e4eacd4e525157b45e5> /System/Library/PrivateFrameworks/PencilKit.framework/PencilKit
0x196720000 - 0x19673dfff QuickLookThumbnailing arm64  <470fdd27c3fd3e8e80e8ee444e61524e> /System/Library/PrivateFrameworks/QuickLookThumbnailing.framework/QuickLookThumbnailing
0x19673e000 - 0x1967f9fff PDFKit arm64  <33ded0e13cf530f593a76191e5df4bcb> /System/Library/Frameworks/PDFKit.framework/PDFKit
0x1967fa000 - 0x196926fff AnnotationKit arm64  <a73f1840f6873a05812b0a15f8d467f6> /System/Library/PrivateFrameworks/AnnotationKit.framework/AnnotationKit
0x196b45000 - 0x196b75fff MarkupUI arm64  <c8ae0e41f25f365c882eb7c6f6890df0> /System/Library/PrivateFrameworks/MarkupUI.framework/MarkupUI
0x196b98000 - 0x196c4ffff QuickLook arm64  <7c88544772423ccf90f45352c249cb07> /System/Library/Frameworks/QuickLook.framework/QuickLook
0x197217000 - 0x197311fff MessageUI arm64  <8082e954a0ef3ae9a2566a4d85fb546a> /System/Library/Frameworks/MessageUI.framework/MessageUI
0x198471000 - 0x198475fff AccessibilityUIShared arm64  <2c487c4c9dd033b69076bed5c04a46c5> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/AccessibilityUIShared.framework/AccessibilityUIShared
0x1987f9000 - 0x1987fffff AccessibilityUI arm64  <023473a0a5c23a358f730533c7588758> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/AccessibilityUI.framework/AccessibilityUI
0x19b0a4000 - 0x19b0c8fff AppSupportUI arm64  <8b2968fb21e032c28e99c9ecd9ec659c> /System/Library/PrivateFrameworks/AppSupportUI.framework/AppSupportUI
0x19c711000 - 0x19c713fff SpeakTypingServices arm64  <ef388d3f327c34f9acb4552845db0eee> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/SpeakTypingServices.framework/SpeakTypingServices
0x19c714000 - 0x19c719fff ZoomServices arm64  <a72bfa1f0d5e3af69e36e0fbf3e88e0e> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/ZoomServices.framework/ZoomServices
0x1a1208000 - 0x1a1215fff AccessibilitySettingsLoader arm64  <427285b37cd4351f994a22065ec495df> /System/Library/AccessibilityBundles/AccessibilitySettingsLoader.bundle/AccessibilitySettingsLoader
0x1a12df000 - 0x1a12f2fff QuickSpeak arm64  <33cd960cd1fc3fc3ba7ae03b016ab3f8> /System/Library/AccessibilityBundles/QuickSpeak.bundle/QuickSpeak
0x1a1515000 - 0x1a17c9fff RawCamera arm64  <2021306f6fc13a0aa01bf2257d6764b1> /System/Library/CoreServices/RawCamera.bundle/RawCamera
0x1a1a7f000 - 0x1a1a93fff libCGInterfaces.dylib arm64  <1d1226684f763cb896403b5eb6b8a16f> /System/Library/Frameworks/Accelerate.framework/Frameworks/vImage.framework/Libraries/libCGInterfaces.dylib
0x1a3f1e000 - 0x1a3f45fff CoreServicesInternal arm64  <23365a9f92d0374cb611ba97613c1fa7> /System/Library/PrivateFrameworks/CoreServicesInternal.framework/CoreServicesInternal
0x1a44f6000 - 0x1a4507fff libGSFontCache.dylib arm64  <f74e048bf71f35ee93c5f0b8e93fe753> /System/Library/PrivateFrameworks/FontServices.framework/libGSFontCache.dylib
0x1a4508000 - 0x1a453afff libTrueTypeScaler.dylib arm64  <3b74a25c73c9398c87f4fbf0114f41a9> /System/Library/PrivateFrameworks/FontServices.framework/libTrueTypeScaler.dylib
0x1a5c46000 - 0x1a5c49fff InternationalSupport arm64  <4112de0d2ce03f97af33b982ba453fa7> /System/Library/PrivateFrameworks/InternationalSupport.framework/InternationalSupport
0x1a87d3000 - 0x1a87defff libMobileGestaltExtensions.dylib arm64  <277d582925a3373b9d5ec41c66b857fd> /usr/lib/libMobileGestaltExtensions.dylib
0x1a9948000 - 0x1a9979fff libclosured.dylib arm64  <81ab29ce13173b7db7389232701746ef> /usr/lib/closure/libclosured.dylib
EOF

We also have a lot of CFNetwork related crashes:

1. The one that happens most often for some reason doesn't appear in Xcode, but only in Fabric Crashlytics. But it's exactly the same as reported here: https://forums.developer.apple.com/thread/94924

I've noticed that it happens in background during Background Fetch.

2. Our second most popular CFNetwork crash is this one:

https://gist.github.com/jarosan/af09485be31123bb6ebb9395ba9382f8

2. Our second most popular CFNetwork crash is this one:

This is a very different crash from all the other crash mentioned on this thread. If you open a new thread for it, I’ll follow-up with my thoughts.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

The same crash we got, do you any clues?

We have similar crash here. It happens quite often. About 15% percent of our crashes is this one.

1. Code Type: ARM-64

2. Parent Process: ??? [1]

3. Date/Time: 2018-01-27 02:24:08 +0000

4. OS Version: iPhone OS 11.2.2 (15C202)

5. Report Version: 104

6. Exception Type: SIGSEGV

7. Exception Codes: SEGV_ACCERR at 0x0

8. Triggered by Thread: 6

9. Thread 6 Crashed:

10. 0 CFNetwork 0x0000000186384934 CFAllocatedReferenceCountedObject::_retainable_equal(void const*, void const*) :28 (in CFNetwork)

11. 1 CoreFoundation 0x0000000185c1d2a0 _CFDictionaryGetValue :224 (in CoreFoundation)

12. 2 CFNetwork 0x00000001863b5070 TubeManager::_onqueue_enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions, BaseAwaitingTube*) :80 (in CFNetwork)

13. 3 CFNetwork 0x00000001863b5fd8 TubeManager::_onqueue_reenqueueAwaitingTube(BaseAwaitingTube*) :112 (in CFNetwork)

14. 4 CFNetwork 0x00000001863b6238 ___ZN11TubeManager21_onqueue_newTubeReadyEP4Tube13CFStreamError_block_invoke :28 (in CFNetwork)

15. 5 CFNetwork 0x0000000186514904 ___ZNK18QCoreSchedulingSet12performAsyncEU13block_pointerFvvE_block_invoke :52 (in CFNetwork)

16. 6 libdispatch.dylib 0x00000001856daa54 _dispatch_call_block_and_release :24 (in libdispatch.dylib)

17. 7 libdispatch.dylib 0x00000001856daa14 _dispatch_client_callout :16 (in libdispatch.dylib)

18. 8 libdispatch.dylib 0x00000001856e496c _dispatch_queue_serial_drain$VARIANT$mp :528 (in libdispatch.dylib)

19. 9 libdispatch.dylib 0x00000001856e52fc _dispatch_queue_invoke$VARIANT$mp :340 (in libdispatch.dylib)

20. 10 libdispatch.dylib 0x00000001856e4824 _dispatch_queue_serial_drain$VARIANT$mp :200 (in libdispatch.dylib)

21. 11 libdispatch.dylib 0x00000001856e52fc _dispatch_queue_invoke$VARIANT$mp :340 (in libdispatch.dylib)

22. 12 libdispatch.dylib 0x00000001856e5d20 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp :404 (in libdispatch.dylib)

23. 13 libdispatch.dylib 0x00000001856ee03c _dispatch_workloop_worker_thread$VARIANT$mp :644 (in libdispatch.dylib)

24. 14 libsystem_pthread.dylib 0x0000000185982f1c _pthread_wqthread :932 (in libsystem_pthread.dylib)

25. 15 libsystem_pthread.dylib 0x0000000185982b6c _start_wqthread :4 (in libsystem_pthread.dylib)