2238560 - Crash at s_bufman::PrivateFlush or hs_dpInsert::FinishedInsert - SAP IQ

• SAP IQ multiplex writer node DML statements sporadically causing various server crashes at s_bufman::PrivateFlush, hs_dpInsert::FinishedInsert and  st_iqtxn::PostCommitTxn
• example call sequences taken from resultant stack traces:

pc: 0xfffffd7fe454196b void s_bufman::PrivateFlush(unsigned long long)+0x5bf(0x0, 0x0)
pc: 0xfffffd7fe4542b39 void s_bufman::FlushToDisk(unsigned long long)+0x21(0xfffffd7fe655c3f0, 0xfffffd7fe655c3b0)
pc: 0xfffffd7fe61dd159 void st_txncb::FlushCoalesce(st_txncb::coalesce,hos_mutex_lock&)+0x105(0xfffffd7feb90b820, 0xfffffd7fe42e85c4)
pc: 0xfffffd7fe61dc939 void st_txncb::FlushForCommit()+0x1c1(0x4cb8d0, 0x4cb878)
pc: 0xfffffd7fe6201717 void st_txnMgr::FlushForCommit()+0x103(0xfffffd7feb90c5e0, 0xfffffd7fe42e85c4)
pc: 0xfffffd7fe4fcb28a void st_command::DoCmdThroughResourceGate()+0x1c2(0xfffffd7fe6bc38d0, 0xcc00000002)
pc: 0xfffffd7fe5023a07 unsigned st_iqtxn::FlushForCommit(UIConnection*)+0x23(0x0, 0xfffffd7feb90dda0)

pc: 0xfffffd7fe4fcb28a void st_command::DoCmdThroughResourceGate()+0x1c2(0xfffffd7fe6bc37b0, 0x5f00000002)
pc: 0xfffffd7fe5023ac3 unsigned st_iqtxn::PostCommitTxn(UIConnection*)+0x23(0xfffffd7fec0dc330, 0xfffffd7fec0dd5b0)
pc: 0xfffffd7fe39ff060 UIQTxn_PostCommitTxn+0x18(0xfffffd7fec0dc388, 0xfffffd7fec0dd5b0)
pc: 0xfffffd7fe502847c void st_SAIQInterfaceInfo::callFunction()+0x1c(0xfffffd7fec0dd5a0, 0x299d3d12d8)
pc: 0xfffffd7fe50adb75 void st_SAIQInterface::RunIQFunc(st_SAIQInterfaceInfo*)+0x28d(0xfffffd7fec0ddbd0, 0xfffffd7fe5028aee)
pc: 0xfffffd7fe5028a91 void st_SAIQInterface::Execute(int,void*,unsigned(*)(void*,void*),void*,unsigned)+0x259(0xfffffd7f089ac060, 0xfffffd7f00000000)
pc: 0xfffffd7fe439cc79 void saint_iqthresholdtxn::PostCommitTxn(IConnection*)+0x51(0x0, 0xfffffd7ffd6a7834)
pc: 0xfffffd7ffe90f970 void DB_Commit_Chgs(Connection*)+0x644(0x0, 0x0)

• SAP IQ 16.x
• SAP IQ 15.x

KBA , BC-SYB-IQ , Sybase IQ , Problem