Hi,
Anyone experiencing the same? When downloading a large zone from the private database with a large number of changes, adds and deletes (say 20k records, 15k deletes and 5k changes) cloudd crashes reproducibly along the way. This only happens when fetchAllChanges=YES. When set to NO or when using the older CKFetchRecordChangesOperation, everything works as expected.
Here are some stacks where cloudd is crashing:
Thread 5 Crashed:: Dispatch queue: com.apple.cloudkit.fetchAllZoneChanges.callback.0x7fa2cde15450
0 com.apple.cloudkit.CloudKitDaemon 0x00007fffd2420004 CKDPQueryRetrieveRequestReadFrom + 506
1 libdispatch.dylib 0x00007fffdcb41128 _dispatch_client_callout + 8
2 libdispatch.dylib 0x00007fffdcb578e8 _dispatch_queue_serial_drain + 209
3 libdispatch.dylib 0x00007fffdcb49d41 _dispatch_queue_invoke + 1046
4 libdispatch.dylib 0x00007fffdcb579d2 _dispatch_queue_serial_drain + 443
5 libdispatch.dylib 0x00007fffdcb49d41 _dispatch_queue_invoke + 1046
6 libdispatch.dylib 0x00007fffdcb579d2 _dispatch_queue_serial_drain + 443
7 libdispatch.dylib 0x00007fffdcb49d41 _dispatch_queue_invoke + 1046
8 libdispatch.dylib 0x00007fffdcb42ee0 _dispatch_root_queue_drain + 476
9 libdispatch.dylib 0x00007fffdcb42cb7 _dispatch_worker_thread3 + 99
10 libsystem_pthread.dylib 0x00007fffdcd8d746 _pthread_wqthread + 1299
11 libsystem_pthread.dylib 0x00007fffdcd8d221 start_wqthread + 13
Thread 5 Crashed:: Dispatch queue: com.apple.cloudkit.fetchAllZoneChanges.callback.0x7fbcb1575f20
0 libobjc.A.dylib 0x00007fffdc2938a4 objc_loadWeakRetained + 166
1 com.apple.cloudkit.CloudKitDaemon 0x00007fffd24292b4 __82-[CKDFetchRecordZoneChangesOperation _handleRecordChange:perRequestSchedulerInfo:]_block_invoke_2 + 47
2 libdispatch.dylib 0x00007fffdcb56680 _dispatch_block_async_invoke_and_release + 75
3 libdispatch.dylib 0x00007fffdcb41128 _dispatch_client_callout + 8
4 libdispatch.dylib 0x00007fffdcb578e8 _dispatch_queue_serial_drain + 209
5 libdispatch.dylib 0x00007fffdcb49d41 _dispatch_queue_invoke + 1046
6 libdispatch.dylib 0x00007fffdcb579d2 _dispatch_queue_serial_drain + 443
7 libdispatch.dylib 0x00007fffdcb49d41 _dispatch_queue_invoke + 1046
8 libdispatch.dylib 0x00007fffdcb579d2 _dispatch_queue_serial_drain + 443
9 libdispatch.dylib 0x00007fffdcb49d41 _dispatch_queue_invoke + 1046
10 libdispatch.dylib 0x00007fffdcb42ee0 _dispatch_root_queue_drain + 476
11 libdispatch.dylib 0x00007fffdcb42cb7 _dispatch_worker_thread3 + 99
12 libsystem_pthread.dylib 0x00007fffdcd8d746 _pthread_wqthread + 1299
13 libsystem_pthread.dylib 0x00007fffdcd8d221 start_wqthread + 13
Thread 5 Crashed:: Dispatch queue: com.apple.cloudkit.fetchAllZoneChanges.callback.0x7faca4525630
0 com.apple.cloudkit.CloudKitDaemon 0x00007fff88fc0004 -[CKDPCSCacheRecordFetchOperation _decryptPCS] + 6466
1 libdispatch.dylib 0x00007fff936e7128 _dispatch_client_callout + 8
2 libdispatch.dylib 0x00007fff936fd8e8 _dispatch_queue_serial_drain + 209
3 libdispatch.dylib 0x00007fff936efd41 _dispatch_queue_invoke + 1046
4 libdispatch.dylib 0x00007fff936fd9d2 _dispatch_queue_serial_drain + 443
5 libdispatch.dylib 0x00007fff936efd41 _dispatch_queue_invoke + 1046
6 libdispatch.dylib 0x00007fff936fd9d2 _dispatch_queue_serial_drain + 443
7 libdispatch.dylib 0x00007fff936efd41 _dispatch_queue_invoke + 1046
8 libdispatch.dylib 0x00007fff936e8ee0 _dispatch_root_queue_drain + 476
9 libdispatch.dylib 0x00007fff936e8cb7 _dispatch_worker_thread3 + 99
10 libsystem_pthread.dylib 0x00007fff93933746 _pthread_wqthread + 1299
11 libsystem_pthread.dylib 0x00007fff93933221 start_wqthread + 13
Already filed a bug report, #28461661
