2873754 - Server crashes with Signal 11 when running "resume route" - SRS

• Data is replicating very slow on a route and backlog is accumulating.
• When issue the "suspend route" command from the primary RepServer, the following errors are raised in SRS errorlog:
   
  

  I. 2019/12/09 08:26:12. RSI for 'RS': Waiting response from the RSI receiver.
  E. 2019/12/09 08:26:13. ERROR #4078 RSI(RS) - generic/rsi/rsiint.c(2434)
  Unexpected return value '-202' from ct_results. Please check log for error messages from CT-Lib.
  E. 2019/12/09 08:26:13. ERROR #4044 RSI(RS) - generic/rsi/rsiint.c(352)
  RSI for 'RS_C': Shutting down due to an exception.
   

• When issue the "resume route" command, RepServer crashes with following messages and a core file is generated:
   
  

  Thread RSI(RS) infected with signal 11.
  Dumping memory trace.
  ***************STACK TRACE***************
  *****thread RSI(RS)*******
  (linux_dump_all_func_stack+0x32) [0x8d5240]
  (dbg_dump_stack_noarg+0x31) [0x8fa62d]
  (dbg_dump_stack+0x164) [0x8fb950]
  (exc__appDumpStack+0x105) [0x6e4d75]
  (exc_terminate+0x20f) [0x6e8925]
  (linux_catch_signal+0x26c) [0x54731c]
  /lib64/libpthread.so.0(+0xf680) [0x7ffff7500680]
  (ll_next+0xa) [0x787012]
  (_sqm_read_logical_block+0x118) [0x4c7dbe]
  (_sqm_read_message+0x2d54) [0x4ba7f2]
  (sqm_read_message+0x5a) [0x4bb934]
  () [0x8508f7]
  (_rsi_sender_wrapper+0x1c1) [0x8525e7]
  (srv__start_function+0x1eb) [0xa4a28b]
  /lib64/libpthread.so.0(+0x7dd5) [0x7ffff74f8dd5]
  /lib64/libc.so.6(clone+0x6d) [0x7ffff5d91b3d]
  *****End of stack trace.****
  Internal error. Attempting to produce a core file.

• The same issue also seen in HADR with SSL enables during upgrade.  After the SRS upgrade, running the RMA command "sap_upgrade_server SRS, finish, ha" may crash the SRS with a core dump and a stack trace as shown above.

SAP Replication Server (SRS) 16.0

CR#820698, CR820698, 820698, CR#821041, CR821041, 821041, stacktrace, segmentation, violation, storage, access,  fault, segfault, SEGV , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , Bug Filed