Rare crash in mongos version v3.3.10-393-g4e68214, perhaps when receiving an "insert" command from the C Driver. Ubuntu POWER8, non-SSL connections.
You can see the C Driver test suite log here:
Server logs attached. The mongo-_SfqpF/mongos.log file records the crash:
libc.so.6(__stack_chk_fail+0x20) [0x3fff90d52410] mongos(_ZN5mongo13MessagingPort4recvERNS_7MessageE+0xB5C) [0x2649718c] mongos(_ZN5mongo18DBClientConnection4recvERNS_7MessageE+0x64) [0x25b8d794] mongos(_ZN5mongo20DBClientMultiCommand7recvAnyEPNS_16ConnectionStringEPNS_16BSONSerializableE+0x184) [0x26299744] mongos(_ZN5mongo14BatchWriteExec12executeBatchEPNS_16OperationContextERKNS_21BatchedCommandRequestEPNS_22BatchedCommandResponseEPNS_19BatchWriteExecStatsE+0x900) [0x263effc0] mongos(_ZN5mongo13ClusterWriter5writeEPNS_16OperationContextERKNS_21BatchedCommandRequestEPNS_22BatchedCommandResponseE+0x6F8) [0x262caf18] mongos(+0xCCE1CC) [0x2634e1cc] mongos(_ZN5mongo7Command17execCommandClientEPNS_16OperationContextEPS0_iPKcRNS_7BSONObjERNS_14BSONObjBuilderE+0xAD8) [0x263c0f38] mongos(+0xCE8AA0) [0x26368aa0] mongos(_ZN5mongo8Strategy15clientCommandOpEPNS_16OperationContextERNS_7RequestE+0xABC) [0x2636a5ac] mongos(_ZN5mongo7Request7processEPNS_16OperationContextEi+0x6B4) [0x26362204]
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