2532809 - DB6: R3load with "-loadprocedure fast LOAD" option core dump in Linux system

R3load with "-loadprocedure fast" option returns core dump in the Linux system.

The stack trace in the import log looks like the followings:

...
(PRC) INFO: called "/usr/sap/ABC/SYS/exe/uc/linuxx86_64/R3load -i SMIMCONT1.cmd -dbcodepage 4103 -l SMIMCONT1.log -stop_on_error -loadprocedure fast LOAD:COMPRESS_ALL:DEF_CRT"
...

(FLD) INFO: Using LOAD API for table SMIMCONT1
------------------ C-STACK ----------------------
R3load[S](LinStackBacktrace+0x8c)[0x427199]
R3load[S](LinStack+0x35)[0x42b1e8]
R3load[S](CTrcStack2+0x4e)[0x426f57]
R3load[S](SigIGenAction+0x288)[0x7454d8]
<signal handler called> [0x7f4446f69b10]
libpthread.so.0[S](__lll_unlock_elision+0x30)[0x7f4446f6b4a0]
libdb2.so[C](sqloxult_app+0x66)[0x7f4440c938f6]
libdb2.so(sqlastop+0xc0)[0x7f444075f770]
libdb2.so(sqluSetCurrentIsolation(char const*, sqlca*)+0x97)[0x7f4440dfb667]
libdb2.so(sqluLoadClient(unsigned int, sqlu_media_list*, sqlu_media_list*, sqlu_media_list*, sqldcol*, sqllob*, char*, sqlchar*, char*, char*, short, sqlu_media_list*, sqlu_media_list*, int*, void*, void*, void*, void*, sqlca*)+0x5f1)[0x7f4440e0a221]
libdb2.so(db2Load+0x3f2)[0x7f44409e5622]
libdb2.so(CLI_loadBeginEnd(CLI_STATEMENTINFO*, short, CLI_ERRORHEADERINFO*)+0x8a5)[0x7f4440158e55]
libdb2.so(SQLExecute2(CLI_STATEMENTINFO*, CLI_ERRORHEADERINFO*)+0x1107)[0x7f444013df27]
libdb2.so(SQLExecute+0xeaf)[0x7f4440122a5f]
R3load[S](ExeFastload+0xa7e)[0x50e70e]
R3load[S](ExeDBInsert+0x148)[0x521658]
R3load[S](execute_insert+0x2d7)[0x521a27]
R3load[S](import+0x149c)[0x52328c]
R3load[S](main_r3ldmain+0x20eb)[0x504e2b]
libc.so.6[S](__libc_start_main+0xf5)[0x7f4446bd66e5]
-------------------------------------------------

• SAP on IBM Db2 for Linux, UNIX, and Windows
• Linux server

R3load, import, core dump, __lll_unlock_elision, loadprocedure fast. , KBA , BC-DB-DB6-INS , Installation SAP System , BC-DB-DB6 , DB2 Universal Database for Unix / NT , BC-INS , Installation Tools (SAP Note 1669327) , BC-OP-LNX , Linux , BC-INS-MIG , OS/DB Migrations with SWPM and DB refresh , Problem