0 caulk 0x00007ff825914090 _ZN5caulk5alloc16tiered_allocatorIJNS0_15size_range_tierILm0ELm1008ENS0_14tree_allocatorINS0_15chunk_allocatorINS0_14page_allocatorENS0_16bitmap_allocatorENS0_18embed_block_memoryELm16384EJLm16ELm6EEEEEEEENS2_ILm1009ELm256000ENS0_23guarded_edges_allocato + 598 1 AudioToolboxCore 0x00007ff81b3b3866 ExtendedAudioBufferList_Destroy + 98 2 AudioToolboxCore 0x00007ff81b196e06 _ZN4acv218AudioConverterBaseD2Ev + 226 3 AudioToolboxCore 0x00007ff81b362004 _ZN4acv213PCMConverter2D0Ev + 14 4 AudioToolboxCore 0x00007ff81b1f57b0 _ZNSt3__16vectorINS_10unique_ptrI10Resampler2NS_14default_deleteIS2_EEEENS_9allocatorIS5_EEE16__destroy_vectorclB9nqe210106Ev + 56 5 AudioToolboxCore 0x00007ff81b2d68e3 _ZNSt3__110unique_ptrIN4acv219AudioConverterChainENS_14default_deleteIS2_EEE5resetB9nqe210106EPS2_ + 25 6 AudioToolboxCore 0x00007ff81b2d4160 _ZN4acv216AudioConverterV2D0Ev + 30 7 AudioToolboxCore 0x00007ff81b2d923b AudioConverterDispose + 198 8 OpenAL 0x00007ffb278290f1 _ZN5ACMap19RemoveAllConvertersEv + 31 9 OpenAL 0x00007ffb27828f3e _ZN9OALSourceD2Ev + 226 10 OpenAL 0x00007ffb278259c4 _ZN10OALContext21CleanUpDeadSourceListEv + 124 11 OpenAL 0x00007ffb27825d52 _ZN10OALContext9AddSourceEj + 140 12 OpenAL 0x00007ffb2782006a alGenSources + 78 13 WSPlayer.dylib 0x00000001411b9aff SoundPlayer::Open(int, int, int) + 64255 (OpenAlSound.h:239)

Some of my clients have also experienced this type of crash, all of whom are running Android 26.4+ on an x86 architecture, and the problems are all related to audio playback. My product has two audio playback methods: one uses NSSound to play actual files, resulting in the same crash stack as others; the other uses OpenAL to play audio data, with the following crash stack: Thread 60 Crashed: 0 caulk 0x00007ff825914090 _ZN5caulk5alloc16tiered_allocatorIJNS0_15size_range_tierILm0ELm1008ENS0_14tree_allocatorINS0_15chunk_allocatorINS0_14page_allocatorENS0_16bitmap_allocatorENS0_18embed_block_memoryELm16384EJLm16ELm6EEEEEEEENS2_ILm1009ELm256000ENS0_23guarded_edges_allocato + 598 1 AudioToolboxCore 0x00007ff81b3b3866 ExtendedAudioBufferList_Destroy + 98 2 AudioToolboxCore 0x00007ff81b196e06 _ZN4acv218AudioConverterBaseD2Ev + 226 3 AudioToolboxCore 0x00007ff81b362004 _ZN4acv213PCMConverter2D0Ev + 14 4 AudioToolboxCore 0x00007ff81b1f57b0 _ZNSt3__16vectorINS_10unique_ptrI10Resampler2NS_14default_deleteIS2_EEEENS_9allocatorIS5_EEE16__destroy_vectorclB9nqe210106Ev + 56 5 AudioToolboxCore 0x00007ff81b2d68e3 ZNSt3__110unique_ptrIN4acv219AudioConverterChainENS_14default_deleteIS2_EEE5resetB9nqe210106EPS2 + 25 6 AudioToolboxCore 0x00007ff81b2d4160 _ZN4acv216AudioConverterV2D0Ev + 30 7 AudioToolboxCore 0x00007ff81b2d923b AudioConverterDispose + 198 8 OpenAL 0x00007ffb278290f1 _ZN5ACMap19RemoveAllConvertersEv + 31 9 OpenAL 0x00007ffb27828f3e _ZN9OALSourceD2Ev + 226 10 OpenAL 0x00007ffb278259c4 _ZN10OALContext21CleanUpDeadSourceListEv + 124 11 OpenAL 0x00007ffb27825d52 _ZN10OALContext9AddSourceEj + 140 12 OpenAL 0x00007ffb2782006a alGenSources + 78 13 WSPlayer.dylib 0x00000001411b9aff SoundPlayer::Open(int, int, int) + 64255 (OpenAlSound.h:239)