The crash in _dispatch_source_set_runloop_timer_4CF seems back in iOS 18.0 but with a different stack trace: Launch Time: 2024-11-20T12:12:59Z OS Version: iPadOS 18.0 (22A3354) Report Version: 104 Exception Type: SIGSEGV Exception Codes: SEGV_MAPERR at 0x1d Crashed Thread: 33 Thread 33 Crashed: 0 libdispatch.dylib 0x00000001a10e2e80 _dispatch_source_set_runloop_timer_4CF + 36 1 CFNetwork 0x000000019a8e801c URLConnectionLoader::loadWithWhatToDo(NSURLRequest*, _CFCachedURLResponse const*, long, URLConnectionLoader::WhatToDo) + 972 2 CFNetwork 0x000000019a975920 ___ZN19URLConnectionLoader29continueWithCacheLookupResultEP12NSURLRequestPK20_CFCachedURLResponse23NSURLRequestCachePolicy_block_invoke + 96 3 CFNetwork 0x000000019a96f880 ___ZNK19URLConnectionLoader25withExistingProtocolAsyncEU13block_pointerFvP11URLProtocolE_block_invoke + 36 4 CFNetwork 0x000000019a96f30c ___ZNK18QCoreSchedulingSet12performAsyncEU13block_pointerFvvE_block_invoke + 56 5 libdispatch.dylib 0x00000001a10cc370 _dispatch_call_block_and_release + 28 6 libdispatch.dylib 0x00000001a10ce0d0 _dispatch_client_callout + 16 7 libdispatch.dylib 0x00000001a10d56d8 _dispatch_lane_serial_drain + 740 8 libdispatch.dylib 0x00000001a10d6214 _dispatch_lane_invoke + 428 9 libdispatch.dylib 0x00000001a10d7670 _dispatch_workloop_invoke + 1728 10 libdispatch.dylib 0x00000001a10e1258 _dispatch_root_queue_drain_deferred_wlh + 284 11 libdispatch.dylib 0x00000001a10e0aa4 _dispatch_workloop_worker_thread + 536 12 libsystem_pthread.dylib 0x00000002206cbc7c _pthread_wqthread + 284 13 libsystem_pthread.dylib 0x00000002206c8488 start_wqthread + 4

Same issue here. Did you solve this?

Same issue here. For us it also crashes on iOS 15.6, 15.6.1, 15.7, 15.7.2

Same issue. iPad14,2 and iPadOS 16.1.1 (20B101) Exception Type: SIGBUS Exception Codes: BUS_ADRERR at 0x24ce3cc94 Crashed Thread: 20 Thread 20 Crashed: 0 libobjc.A.dylib 0x00000001c228c654 dataSegmentsContain(objc_class*) + 120 1 libobjc.A.dylib 0x00000001c227bc74 lookUpImpOrForward + 856 2 libobjc.A.dylib 0x00000001c22760c4 _objc_msgSend_uncached + 64 3 libobjc.A.dylib 0x00000001c22755d8 AutoreleasePoolPage::releaseUntil(objc_object**) + 192 4 libobjc.A.dylib 0x00000001c2278f80 objc_autoreleasePoolPop + 252 5 libobjc.A.dylib 0x00000001c22a6bbc objc_tls_direct_base<AutoreleasePoolPage*, (tls_key)3, AutoreleasePoolPage::HotPageDealloc>::dtor_(void*) + 164 6 libsystem_pthread.dylib 0x00000002155bbbd8 _pthread_tsd_cleanup + 616 7 libsystem_pthread.dylib 0x00000002155be674 _pthread_exit + 80 8 libsystem_pthread.dylib 0x00000002155bb6d8 _pthread_start + 156 9 libsystem_pthread.dylib 0x00000002155baba4 thread_start + 4

This seems the same issue we are facing: https://developer.apple.com/forums/thread/696764

Gathered another crash log where the main thread state is also captured. It seems to have to do with multithreading + cookie management in CFNetwork. Does this help finding the cause? crash_logx.txt

Attached to this post are crash logs with better redaction / alignment. This is probably worthy of a separate topic, but I do briefly want to mention that the iPadOS 15.2 crash log failed to symbolicate automatically, and is still not fully symbolicated. I had to manually download iOS 15.2 arm64 and arm64e symbols and run symbolication with the symbolicatecrash command line utility. Xcode 13.2 freezes when I try to symbolicate the crash log through the Devices and Simulators window, and apparently Xcode 13.2 did not include the 15.2 symbols. Perhaps this is a result of downloading Xcode 13.2 manually from the Apple Developer downloads website, which was required due to the App Store Xcode issue described here. ipados_15_1.txt ipados_15_2.txt