Crashed: com.apple.CFNetwork.LoaderQ

App & System Services Networking
kakoAoteman OP
Created 2w
Replies 5
Boosts 1
Views 203
Participants 3

com.apple.main-thread 0 StarMaker 0x5c40854 _isPlatformVersionAtLeast.cold.2 + 4425680980 1 StarMaker 0x526d278 -[FPRScreenTraceTracker displayLinkStep] + 191 (FPRScreenTraceTracker.m:191) 2 QuartzCore 0xbe924 CA::Display::DisplayLinkItem::dispatch(CA::SignPost::Interval<(CA::SignPost::CAEventCode)835322056>&) + 64 3 QuartzCore 0x9bf38 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 880 4 QuartzCore 0xaf770 CA::Display::DisplayLink::dispatch_deferred_display_links(unsigned int) + 360 5 UIKitCore 0x7dee4 _UIUpdateSequenceRunNext + 128 6 UIKitCore 0x7d374 schedulerStepScheduledMainSectionContinue + 60 7 UpdateCycle 0x1560 UC::DriverCore::continueProcessing() + 84 8 CoreFoundation 0x164cc __CFMachPortPerform + 168 9 CoreFoundation 0x460b0 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 60 10 CoreFoundation 0x45fd8 __CFRunLoopDoSource1 + 508 11 CoreFoundation 0x1dc1c __CFRunLoopRun + 2168 12 CoreFoundation 0x1ca6c _CFRunLoopRunSpecificWithOptions + 532 13 GraphicsServices 0x1498 GSEventRunModal + 120 14 UIKitCore 0x9ddf8 -[UIApplication _run] + 792 15 UIKitCore 0x46e54 UIApplicationMain + 336 16 StarMaker 0x50c965c main + 18 (main.m:18) 17 ??? 0x19a9dae28 (缺少)

Thread 0 libsystem_kernel.dylib 0x67f4 __semwait_signal + 8 1 libsystem_c.dylib 0xc7e4 nanosleep + 220 2 ZorroRtcEngineKit 0x1eb0f8 std::__Cr::this_thread::sleep_for(std::__Cr::chrono::duration<long long, std::__Cr::ratio<1l, 1000000000l>> const&) + 198 (pthread.h:198) 3 ZorroRtcEngineKit 0x27d30 zorro::KbLog::Loop() + 88 (kblog.cc:88) 4 ZorroRtcEngineKit 0x286e8 <deduplicated_symbol> + 4667967208 5 libsystem_pthread.dylib 0x444c _pthread_start + 136 6 libsystem_pthread.dylib 0x8cc thread_start + 8

Thread 0 libsystem_kernel.dylib 0x67f4 __semwait_signal + 8 1 libsystem_c.dylib 0xc7e4 nanosleep + 220 2 ZorroRtcEngineKit 0x1eb0f8 std::__Cr::this_thread::sleep_for(std::__Cr::chrono::duration<long long, std::__Cr::ratio<1l, 1000000000l>> const&) + 198 (pthread.h:198) 3 ZorroRtcEngineKit 0x19a4e4 zorro::ZkbLog::Loop() + 157 (zlog.cc:157) 4 ZorroRtcEngineKit 0x286e8 <deduplicated_symbol> + 4667967208 5 libsystem_pthread.dylib 0x444c _pthread_start + 136 6 libsystem_pthread.dylib 0x8cc thread_start + 8

Thread 0 libsystem_kernel.dylib 0x67f4 __semwait_signal + 8 1 libsystem_c.dylib 0xc7e4 nanosleep + 220 2 ZorroRtcEngineKit 0x1eb0f8 std::__Cr::this_thread::sleep_for(std::__Cr::chrono::duration<long long, std::__Cr::ratio<1l, 1000000000l>> const&) + 198 (pthread.h:198) 3 ZorroRtcEngineKit 0x19c4d8 zorro::QosManager::Loop() + 966 (string:966) 4 ZorroRtcEngineKit 0x286e8 <deduplicated_symbol> + 4667967208 5 libsystem_pthread.dylib 0x444c _pthread_start + 136 6 libsystem_pthread.dylib 0x8cc thread_start + 8

Answered by DTS Engineer in 880103022

Again, I recommend that you review tip 5 of Quinn’s Top Ten DevForums Tips. Your reply above is barely readable.

Focusing on the crash report, it comes from a third-party crash reporter. I don’t trust such reports in general. See Implementing Your Own Crash Reporter for a detailed explanation as to why. And in this specific case it doesn’t contain the information I need. I was hoping to get an Apple crash report, ideally one in JSON format.

As to what’s happening here:

  • com.apple.CFNetwork.LoaderQ is the name of the thread on which URLSession runs its core functionality.
  • CFNetwork is calling down to Network framework.
  • Which is, in turn, calling down to the QUIC implementation.
  • That’s crashing for some reason, but it’s hard to offer any insight given the very limited information in this third-party crash report (it has no OS version, no binary image list, no register state, and so on).

If you can find an Apple crash report for this, I’d be happy to take another look.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Replies  5
Boosts  1
Views  203
Participants  3
DTS Engineer OP
Apple
2w
Accepted Answer

Please post a full Apple crash report for this. See Posting a Crash Report for advice on how to do that.

ps I also recommend that you read through Quinn’s Top Ten DevForums Tips, and particularly tip 5.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

1
kakoAoteman OP
2w

Crash location：

Crashed thread：com.apple.CFNetwork.LoaderQ

Crash framework：libquic.dylib

Crash function：

quic_fc_service_pending_send_data + 360

Crash stack:

Crashed: com.apple.CFNetwork.LoaderQ 0 libquic.dylib 0x36d84 quic_fc_service_pending_send_data + 360

1 libquic.dylib 0x3bcf0 _quic_conn_outbound_stopping_block_invoke 2 + 28

2 Network 0x23e428 nw_protocol_instance_access_flow_state + 136

3 libquic.dylib 0x3bcb8 __quic_conn_outbound_stopping_block_invoke + 744

4 libquic.dylib 0x3b754 quic_conn_outbound_stopping + 168

5 Network 0x3559b4 nw_protocol_implementation_finalize_output_frames + 576

6 Network 0x67308 nw_flow_service_writes + 5264

7 Network 0x58944 nw_endpoint_handler_add_write_request + 4860

8 Network 0x57880 nw_endpoint_handler_add_write_request + 568

9 Network 0x575a4 nw_connection_add_write_request_on_queue + 228

10 Network 0x5c314 nw_connection_async_if_needed + 76

11 Network 0x573c4 nw_connection_add_write_request + 312

12 Network 0x56868 nw_connection_send + 516

13 CFNetwork 0x66b30 NWIOConnection::writeWithContext + 380

14 CFNetwork 0xa53f4 HTTP3Framer::writeFrame + 536

15 CFNetwork 0xa8ac8 HTTP3Stream::_sendHEADERS + 2384

16 CFNetwork 0xa7ef0 invocation function for block in HTTP3Stream::scheduleAndOpenWithHandler + 316

17 CFNetwork 0xada7c HTTP3Connection::_tryCreateBidirectionalStreams + 620

18 CFNetwork 0xa6b28 HTTP3Stream::scheduleAndOpenWithHandler + 3184

19 CFNetwork 0x64ba0 HTTPProtocol::useNetStreamInfoForRequest + 3340

20 CFNetwork 0xad538 HTTP3ConnectionCacheEntry::enqueueRequestForProtocol + 2500

21 CFNetwork 0xb3ec4 HTTP3ConnectionCacheWrapper::enqueueRequestForProtocol + 128

...``

**Crash analysis:

issue_da165ae3b7947c32f9747f769e65eeff_crash_session_dceeb349f1044f7a84d14c9468f68490_DNE_4_v2_stacktrace.txt
**

This crash occurred within the Apple system framework, specifically in the QUIC protocol implementation of libquic.dylib. The crash function quic_fc_service_pending_send_data is part of the QUIC flow control mechanism, responsible for handling the data streams to be sent. From the stack trace, we can see: The crash occurred during the sending stage of the HTTP/3 request. Regarding the operations of HTTP3Stream::_sendHEADERS and HTTP3Connection An exception occurred when accessing the stream state during the quic_conn_outbound_stopping process.

1
DTS Engineer OP
Apple
2w
Recommended

Again, I recommend that you review tip 5 of Quinn’s Top Ten DevForums Tips. Your reply above is barely readable.

Focusing on the crash report, it comes from a third-party crash reporter. I don’t trust such reports in general. See Implementing Your Own Crash Reporter for a detailed explanation as to why. And in this specific case it doesn’t contain the information I need. I was hoping to get an Apple crash report, ideally one in JSON format.

As to what’s happening here:

  • com.apple.CFNetwork.LoaderQ is the name of the thread on which URLSession runs its core functionality.
  • CFNetwork is calling down to Network framework.
  • Which is, in turn, calling down to the QUIC implementation.
  • That’s crashing for some reason, but it’s hard to offer any insight given the very limited information in this third-party crash report (it has no OS version, no binary image list, no register state, and so on).

If you can find an Apple crash report for this, I’d be happy to take another look.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0
Suryakantsharma84 OP
5d 
0  libquic.dylib                  0x36d84 quic_fc_service_pending_send_data + 360
1  libquic.dylib                  0x3bcf0 __quic_conn_outbound_stopping_block_invoke_2 + 28
2  Network                        0x23e428 nw_protocol_instance_access_flow_state + 136
3  libquic.dylib                  0x3bcb8 __quic_conn_outbound_stopping_block_invoke + 744
4  libquic.dylib                  0x3b754 quic_conn_outbound_stopping + 168
5  Network                        0x3559b4 nw_protocol_implementation_finalize_output_frames(nw_protocol*, nw_frame_array_s*) + 576
6  Network                        0x67308 nw_flow_service_writes(NWConcrete_nw_endpoint_handler*, NWConcrete_nw_endpoint_flow*, nw_flow_protocol*) + 5264
7  Network                        0x58944 nw_endpoint_handler_add_write_request + 4860
8  Network                        0x57880 nw_endpoint_handler_add_write_request + 568
9  Network                        0x575a4 nw_connection_add_write_request_on_queue(NWConcrete_nw_connection*, NSObject<OS_nw_write_request>*, bool) + 228
10 Network                        0x5c314 nw_connection_async_if_needed + 76
11 Network                        0x573c4 nw_connection_add_write_request(NWConcrete_nw_connection*, NSObject<OS_nw_write_request>*) + 312
12 Network                        0x56868 nw_connection_send + 516
13 CFNetwork                      0x66b30 NWIOConnection::writeWithContext(NSObject<OS_nw_content_context>*, ContextReadWriteConnection::WriteContextState, NSObject<OS_dispatch_data>*, void (CFStreamError) block_pointer) + 380
14 CFNetwork                      0xa53f4 HTTP3Framer::writeFrame(H3::FrameType, NSObject<OS_dispatch_data>*, bool, void (unsigned long, CFStreamError) block_pointer) + 536
15 CFNetwork                      0xa8ac8 HTTP3Stream::_sendHEADERS(HTTP3Fields const&, bool, void (unsigned long, CFStreamError) block_pointer) + 2384
16 CFNetwork                      0xa7ef0 invocation function for block in HTTP3Stream::scheduleAndOpenWithHandler(CoreSchedulingSet const*, void (__CFHTTPMessage*, NSObject<OS_dispatch_data>*, CFStreamError const*) block_pointer, void (unsigned char) block_pointer) + 316
17 CFNetwork                      0xada7c HTTP3Connection::_tryCreateBidirectionalStreams() + 620
18 CFNetwork                      0xa6b28 HTTP3Stream::scheduleAndOpenWithHandler(CoreSchedulingSet const*, void (__CFHTTPMessage*, NSObject<OS_dispatch_data>*, CFStreamError const*) block_pointer, void (unsigned char) block_pointer) + 3184
19 CFNetwork                      0x64ba0 HTTPProtocol::useNetStreamInfoForRequest(MetaNetStreamInfo*, HTTPRequestMessage const*, unsigned char) + 3340
20 CFNetwork                      0xad538 HTTP3ConnectionCacheEntry::enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions) + 2500
21 CFNetwork                      0xb3ec4 HTTP3ConnectionCacheWrapper::enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions) + 128
22 CFNetwork                      0x34964 TubeManager::_onqueue_enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions, BaseAwaitingTube*) + 984
23 CFNetwork                      0x33338 invocation function for block in XTubeManager::enqueueRequestForProtocol(MetaConnectionCacheClient*, HTTPRequestMessage const*, MetaConnectionOptions, CoreSchedulingSet const*) + 440
24 CFNetwork                      0xa568 XTubeManager::withTubeManager(CoreSchedulingSet const*, void (GlueTubeManager*) block_pointer) + 584
25 CFNetwork                      0x32508 HTTPProtocol::asynchronouslyCreateAndOpenStream_WithMessage_AfterCookiesAndAuthenticatorHeaders(__CFHTTPMessage*) + 4776
26 CFNetwork                      0x2e07c HTTPProtocol::asynchronouslyAddAuthenticatorHeadersAndContinue(__CFHTTPMessage*) + 132
27 CFNetwork                      0x2dfcc invocation function for block in HTTPProtocol::asynchronouslyAddCookiesAndContinue(__CFHTTPMessage*) + 32
28 CFNetwork                      0x913c invocation function for block in QCoreSchedulingSet::performAsync(void () block_pointer) const + 52
29 libdispatch.dylib              0x1adc _dispatch_call_block_and_release + 32
30 libdispatch.dylib              0x1b7fc _dispatch_client_callout + 16
31 libdispatch.dylib              0xa468 _dispatch_lane_serial_drain + 740
32 libdispatch.dylib              0xaf78 _dispatch_lane_invoke + 440
33 libdispatch.dylib              0xc288 _dispatch_workloop_invoke + 1612
34 libdispatch.dylib              0x153ec _dispatch_root_queue_drain_deferred_wlh + 292
35 libdispatch.dylib              0x14ce4 _dispatch_workloop_worker_thread + 692
36 libsystem_pthread.dylib        0x13b8 _pthread_wqthread + 292
37 libsystem_pthread.dylib        0x8c0 start_wqthread + 8

Getting same crash all for iOS 26 Can we please check issue

0
DTS Engineer OP
Apple
4d

A simple backtrace doesn’t help, alas. So:

  • To look into this in more detail I need a complete Apple crash report.
  • Ideally a JSON crash report (.ips).
  • Ideally one from an app with no third-party crash reporters [1].

See Posting a Crash Report for advice on how to post such a crash report.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0
Crashed: com.apple.CFNetwork.LoaderQ
First post date Last post date
 
 
Q