Crash on libquic.dylib (com.apple.network.connections) EXC_BREAKPOINT (SIGTRAP)

Hi

Getting a crash mainly on iOS 15 with the Apple network thread. From our logs seems like in many locations in the app. Anyone any advice on how to debug it.

Apple crash log below:

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iOS 15.2b2 (19C5036e) … does not have the fix for this bug (r. 84641488).

Yesterday we started seeding iOS 15.2b3 (19C5044b). My understanding is that this includes the fix for this bug (yay!). Please let us know if you see any evidence to the contrary.

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

  • Hi eskimo! Our users using iOS 15.2 are still experiencing this crash, by far the most important crash we have in the application :/

  • Please make sure @lucien-yubo that if you do not already have a bug report down with a sysdiagnose that you please open one on an affected device. If you already have a bug report down, please make sure that this report is updated.

  • Is it possible to disable HTTP/3 in the client side for a specific server side host?

Replies

shuaichaolian wrote:

Is there any way to bypass this problem?

Not on the client side.

xinlinp wrote:

if it is public?

It is not.


iOS 13.2 was just released and I recommend that you encourage your users to upgrade.

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

Seemingly out of no where I have just started to see this crash pop up as our #1 crash in app. It is a repetitive crash for most users that see it.

  • Same here

  • Same here. I started to see this crash on Jan 12th (around 9 PM GMT) out of nowhere. It's our #1 crash at the moment.

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It seems that the issue is still around or a new one creeped in? I can see a number of crashes in Crashlytics on iOS 15.5.0.

Crashed: com.apple.network.connections
0  libquic.dylib                  0x6b06c qlog_abort_internal + 276
1  libquic.dylib                  0x6b058 qlog_abort_internal + 256
2  libquic.dylib                  0x239e4 quic_send_frames_for_key_state + 3928
3  libquic.dylib                  0x301e0 quic_migration_probe_path + 1532
4  libquic.dylib                  0x33010 quic_migration_new_cid + 156
5  libquic.dylib                  0x110e0 quic_frame_process_NEW_CONNECTION_ID + 4080
6  libquic.dylib                  0x647cc quic_frame_process + 140
7  libquic.dylib                  0x169c4 quic_process_inbound + 1376
8  libnetwork.dylib               0x5dd5f0 nw_protocol_data_access_buffer + 1064
9  libquic.dylib                  0x157cc __quic_handle_inbound_block_invoke + 152
10 libquic.dylib                  0x10bc quic_handle_inbound + 124
11 libnetwork.dylib               0x5c048c __nw_protocol_implementation_get_input_internal_block_invoke + 136
12 libnetwork.dylib               0x5bf60c nw_protocol_implementation_get_input_internal + 252
13 libnetwork.dylib               0x5be7f8 nw_protocol_implementation_read + 436
14 libnetwork.dylib               0x5bdf08 nw_protocol_implementation_input_available + 96
15 libnetwork.dylib               0x514698 nw_channel_add_input_frames + 9236
16 libnetwork.dylib               0x512198 nw_channel_update_input_source + 328
17 libnetwork.dylib               0x5113a4 __nw_channel_create_block_invoke.29 + 72
18 libdispatch.dylib              0x3a30 _dispatch_client_callout + 20
19 libdispatch.dylib              0x6eec _dispatch_continuation_pop + 500
20 libdispatch.dylib              0x1a13c _dispatch_source_invoke + 1596
21 libdispatch.dylib              0xcf80 _dispatch_workloop_invoke + 1784
22 libdispatch.dylib              0x16500 _dispatch_workloop_worker_thread + 648
23 libsystem_pthread.dylib        0x10bc _pthread_wqthread + 288
24 libsystem_pthread.dylib        0xe5c start_wqthread + 8
  • If you're seeing this issue again after it was previously fixed them please open a bug report with a sysdiagnose.

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