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2879974 - Connection in maintenance token after ctlib controller thread hits a SEGV in np__connect_cb - SAP ASE

Symptom

Connections from DR ASE entering 'maintenance token' cmd and will be in a stagnant state. These connections will not clear by its own & keep on acquiring new such connections ultimately resulting in "number of user connections" full issue (out of connections).

A signal 11 stacktrace found in ASE error log; from that signal 11 onwards these connections


00:0018:00000:00000:2019/11/06 20:28:30.99 kernel Current process (0x0) infected with signal 11 (SIGSEGV)
00:0018:00000:00000:2019/11/06 20:28:30.99 kernel Current Process is running on a Non-Engine Thread
00:0018:00000:00000:2019/11/06 20:28:30.99 kernel server is using elf symbols for stack decoding (125189 symbols found)
00:0018:00000:00000:2019/11/06 20:28:30.99 kernel Address 0x0x0000000002434e72 (np__connect_cb+0x22), siginfo (code, address) = (1, 0x0x0000000000000090)


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Environment

SAP Adaptive Server Enterprise 16.0 SP03 PL07 (ASE)

Product

SAP Adaptive Server Enterprise 16.0 ; SAP NetWeaver 7.5

Keywords

Sybase, ASEServer, SAPASE, dataserver, CR820657, CR#820657, SEGV, sybnet__async_poll, SIGSEGV, fault, segfault, kisignal, stacktrace,  stack, registers , KBA , BC-SYB-REP-SAP , Replication with SAP Suite / SAP BW , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-SYB-REP , Sybase Replication Server (standalone) , Problem

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