I'm starting to get a lot of reports of random crashes on iOS 15.4. Taking a look at the logs it seems to be primarily around native thread creation and joins.
I have been unable to reproduce the issue myself. Wondering if anyone has seen this or if there is anything they can glean from this crash log:
Thanks in advance.
Hardware Model: iPhone9,3
Process: egginc [7122]
Path: /private/var/containers/Bundle/Application/2471E88B-C3CD-45D4-98E0-99D8C4B5A202/egginc.app/egginc
Identifier: com.auxbrain.egginc
Version: 1.22.6 (1.22.6.0)
AppStoreTools: 13E112
AppVariant: 1:iPhone9,3:15
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: com.auxbrain.egginc [1087]
Date/Time: 2022-03-22 23:27:31.3687 -0400
Launch Time: 2022-03-22 23:26:16.6376 -0400
OS Version: iPhone OS 15.4 (19E241)
Release Type: User
Baseband Version: 6.02.02
Report Version: 104
Exception Type: EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: FRONTBOARD 2343432205
<RBSTerminateContext| domain:10 code:0x8BADF00D explanation:[application<com.auxbrain.egginc>:7122] failed to terminate gracefully after 5.0s
ProcessVisibility: Unknown
ProcessState: Running
WatchdogEvent: process-exit
WatchdogVisibility: Background
WatchdogCPUStatistics: (
"Elapsed total CPU time (seconds): 4.250 (user 4.250, system 0.000), 38% CPU",
"Elapsed application CPU time (seconds): 0.064, 1% CPU"
) reportType:CrashLog maxTerminationResistance:Interactive>
Triggered by Thread: 0
Thread 0 name:
Thread 0 Crashed:
0 libsystem_pthread.dylib 0x00000001dc2ec64c _pthread_create + 944 (pthread.c:1440)
1 libsystem_pthread.dylib 0x00000001dc2ec638 _pthread_create + 924 (inline_internal.h:128)
2 egginc 0x0000000104ec3048 std::__1::__libcpp_thread_create(_opaque_pthread_t**, void* (*)(void*), void*) + 24 (__threading_support:421)
3 egginc 0x0000000104ec3048 std::__1::thread::thread<std::__1::packaged_task<int ()>, void>(std::__1::packaged_task<int ()>&&) + 348 (thread:314)
4 egginc 0x0000000104ebeb20 std::__1::thread::thread<std::__1::packaged_task<int ()>, void>(std::__1::packaged_task<int ()>&&) + 8 (thread:306)
5 egginc 0x0000000104ebeb20 BatchedMesh::kickoffUpdates(GLState&) + 40 (batchedmesh.cpp:969)
6 egginc 0x00000001047978ec ShadowedMesh::getVaos(GLState&) + 92 (shadowedmesh.cpp:501)
7 egginc 0x0000000104ed3ba4 SVRenderNode::drawPreShadowVolume(GLState&) const + 176 (svrendernode.cpp:25)
8 egginc 0x00000001049b0f50 RenderList::draw(GLState&) const + 4948 (renderlist.cpp:238)
9 egginc 0x00000001047898ec GameControllerBase::render(GLState&, float, unsigned int, unsigned int, unsigned int) const + 620 (gamecontrollerbase.cpp:332)
10 egginc 0x000000010478150c -[ZHViewController glkView:drawInRect:] + 360 (ZHViewController.mm:414)
11 GLKit 0x00000001c0791cc0 -[GLKView _display:] + 208 (GLKView.m:590)
12 egginc 0x0000000104781b74 -[ZHViewController drawView:] + 828 (ZHViewController.mm:530)
13 QuartzCore 0x0000000184c5c620 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 760 (CADisplay.mm:4175)
14 QuartzCore 0x0000000184c631d4 display_timer_callback(__CFMachPort*, void*, long, void*) + 368 (CADisplayTimer.cpp:219)
15 CoreFoundation 0x00000001811674dc __CFMachPortPerform + 172 (CFMachPort.c:549)
16 CoreFoundation 0x00000001811a7714 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56 (CFRunLoop.c:1996)
17 CoreFoundation 0x00000001811aad10 __CFRunLoopDoSource1 + 596 (CFRunLoop.c:2136)
18 CoreFoundation 0x0000000181167f40 __CFRunLoopRun + 2392 (CFRunLoop.c:3172)
19 CoreFoundation 0x000000018117ac30 CFRunLoopRunSpecific + 572 (CFRunLoop.c:3268)
20 GraphicsServices 0x00000001a1b95988 GSEventRunModal + 160 (GSEvent.c:2200)
21 UIKitCore 0x0000000183975c50 -[UIApplication _run] + 1080 (UIApplication.m:3511)
22 UIKitCore 0x000000018370f3d0 UIApplicationMain + 336 (UIApplication.m:5064)
23 egginc 0x000000010477f1f8 main + 60 (main.m:16)
24 dyld 0x00000001066043d0 start + 444 (dyldMain.cpp:879)
Thread 1 name:
Thread 1:
0 libsystem_kernel.dylib 0x00000001bb938aac mach_msg_trap + 8
1 libsystem_kernel.dylib 0x00000001bb93907c mach_msg + 72 (mach_msg.c:119)
2 CoreFoundation 0x0000000181163768 __CFRunLoopServiceMachPort + 368 (CFRunLoop.c:2646)
3 CoreFoundation 0x0000000181167a70 __CFRunLoopRun + 1160 (CFRunLoop.c:3000)
4 CoreFoundation 0x000000018117ac30 CFRunLoopRunSpecific + 572 (CFRunLoop.c:3268)
5 Foundation 0x0000000182883eac -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 232 (NSRunLoop.m:373)
6 Foundation 0x00000001828c2e90 -[NSRunLoop(NSRunLoop) runUntilDate:] + 88 (NSRunLoop.m:420)
7 UIKitCore 0x00000001838f50a0 -[UIEventFetcher threadMain] + 512 (UIEventFetcher.m:1167)
8 Foundation 0x00000001828d0d2c __NSThread__start__ + 792 (NSThread.m:972)
9 libsystem_pthread.dylib 0x00000001dc2e9348 _pthread_start + 116 (pthread.c:891)
10 libsystem_pthread.dylib 0x00000001dc2e7948 thread_start + 8
[Full Crash Log](https://developer.apple.com/forums/content/attachment/5f6d5df2-9162-4edf-be6f-1ef36bcbf394)