3379555 - Full database backup crashed IQ server with signal 11 -SAP IQ

• Backup triggered from Networker after IQ start cause IQ abort on Signal 11.
• The backup crash is happening in the Networker library 'libnsriqbr.so'.
  IQ crashes because libnsriqbr.so is not a separate process: it is loaded as a DLL and executed in-process in IQ.
  830/stktrc-20230830-204944_1.iq:
• NOTE:  the address ranges for the 'libnsriqbr.so' backup library, as this information shows the crash occurred within 'libnsriqbr.so'.
  31125 7fa906ade000-7fa906f6f000 r-xp 00000000 fd:02 8410813                    /usr/lib/libnsriqbr.so
  31126 7fa906f6f000-7fa90716f000 ---p 00491000 fd:02 8410813                    /usr/lib/libnsriqbr.so
  31127 7fa90716f000-7fa9071ab000 rw-p 00491000 fd:02 8410813                    /usr/lib/libnsriqbr.so
  34533 7fb6959a7000-7fb6959c2000 r-xp 00000000 fd:02 4216755                    /usr/lib64/libpthread-2.28.so
  34534 7fb6959c2000-7fb695bc1000 ---p 0001b000 fd:02 4216755                    /usr/lib64/libpthread-2.28.so
  34535 7fb695bc1000-7fb695bc2000 r--p 0001a000 fd:02 4216755                    /usr/lib64/libpthread-2.28.so
  34536 7fb695bc2000-7fb695bc3000 rw-p 0001b000 fd:02 4216755                    /usr/lib64/libpthread-2.28.so
  
  
• 830/Strace:  Below is the IQ Stacktrace for the backup thread, indicating that execution entered 'libnsriqbr.so' and crashed while making a call to the 'libpthread' library.
  194717 3854  20:55:02.764892 rt_sigprocmask(SIG_BLOCK, ~[ILL BUS FPE KILL SEGV STOP RTMIN RT_1], [HUP INT QUIT USR1 TERM], 8) = 0
  194718 3854  20:55:02.765065 mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa8facc1000
  194719 3854  20:55:02.765799 rt_sigprocmask(SIG_SETMASK, [HUP INT QUIT USR1 TERM], NULL, 8) = 0
  194720 3854  20:55:02.766012 fstat(83, {st_mode=S_IFREG|0644, st_size=298589, ...}) = 0
  194721 3854  20:55:02.766207 write(83, "pc: 0x400e81 <unknown>\n", 23) = 23
  194722 3854  20:55:02.766429 fstat(83, {st_mode=S_IFREG|0644, st_size=298612, ...}) = 0
  194723 3854  20:55:02.766611 write(83, "pc: 0x7fb37ffa0ef4 pcstkwalk(stk"..., 67) = 67
  194724 3854  20:55:02.766781 fstat(83, {st_mode=S_IFREG|0644, st_size=298679, ...}) = 0
  194725 3854  20:55:02.766945 write(83, "pc: 0x7fb37ffa1620 ucstkgentrace"..., 47) = 47
  194726 3854  20:55:02.767217 fstat(83, {st_mode=S_IFREG|0644, st_size=298726, ...}) = 0
  194727 3854  20:55:02.767404 write(83, "pc: 0x7fb6959b9ce0 <unknown>\n", 29) = 29
  194728 3854  20:55:02.767685 fstat(83, {st_mode=S_IFREG|0644, st_size=298755, ...}) = 0
  194729 3854  20:55:02.767858 write(83, "pc: 0x7fb6959b7d96 <unknown>\n", 29) = 29
  194730 3854  20:55:02.768114 fstat(83, {st_mode=S_IFREG|0644, st_size=298784, ...}) = 0
  194731 3854  20:55:02.768291 write(83, "pc: 0x7fb6959b7e88 <unknown>\n", 29) = 29
  194732 3854  20:55:02.768509 fstat(83, {st_mode=S_IFREG|0644, st_size=298813, ...}) = 0
  194733 3854  20:55:02.768683 write(83, "pc: 0x7fa906e4cd69 <unknown>\n", 29) = 29
  194734 3854  20:55:02.768853 fstat(83, {st_mode=S_IFREG|0644, st_size=298842, ...}) = 0
  194735 3854  20:55:02.769021 write(83, "pc: 0x7fa906bb6d8c <unknown>\n", 29) = 29
  194736 3854  20:55:02.769186 fstat(83, {st_mode=S_IFREG|0644, st_size=298871, ...}) = 0
  

  194737 3854  20:55:02.769352 write(83, "pc: 0x7fa906bb761a <unknown>\n", 29) = 29à The PC address 0x7fa906bb761a corresponds to 'libnsriqbr.so,' indicating that the crash occurred within the 'libnsriqbr.so' library.

  194738 3854  20:55:02.769634 fstat(83, {st_mode=S_IFREG|0644, st_size=298900, ...}) = 0
  194739 3854  20:55:02.769811 write(83, "pc: 0x7fb696130d41 InitializeHan"..., 65) = 65 à The SQLA frame subsequently calls the Open API in the 'libnsriqbr.so' backup library.
  194740 3854  20:55:02.770110 fstat(83, {st_mode=S_IFREG|0644, st_size=298965, ...}) = 0
  194741 3854  20:55:02.770282 write(83, "pc: 0x7fb696139ed5 ArchiveBackup"..., 54) = 54
  194742 3854  20:55:02.770559 fstat(83, {st_mode=S_IFREG|0644, st_size=299019, ...}) = 0
  194743 3854  20:55:02.770733 write(83, "pc: 0x7fb69613b4bd dbi_backup_da"..., 70) = 70
  

SAP IQ 16.1 

CR 828140, CR828140, 828140, libnsriqbr.so , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed