2686240 - Signal 11 in module yylex() or errors 718 and 706 - SAP ASE

• An "infected with signal 11" error with the address in the module yylex() appears in the ASE errorlog:

kernel Current process (0x6de1014e) infected with signal 11 (SIGSEGV)
kernel Address 0x00000000019c9404 (yylex+0xaa34), siginfo (code, address) = (1, 0x0000002000000008)                                  

• A user process (spid) which caused the signal 11 is reported as a zombie task in the ASE errorlog:

kernel  task 1843462478 is zombie

• ASE unexpectedly shuts down.
• The executing SQL contains large amounts of whitespace between SQL keywords in a stored procedure or execute immediate statement.
• A stack trace following the error may include functions:

yylex
yyparse
sqlpars
internal_sql
s_execute

   Note: A complete stack trace is available under Attachments.

• This problem can also be seen in the form of multiple errors, followed by a stack trace.
   

• Error: 718, Severity: 20, State: 1
  Memory allocation from process private memory is being performed by an incorrect process. Current Spid: 'xxx'. Owning Spid: '0'. Memory: '0xxxxxxxxx'. This is an Adaptive Server internal error. Please contact SAP Tech Support.

• Error: 719, Severity: 20, State: 1
  The last prochdr value is not available for the prochdr '0x10000207800'. This is an Adaptive Server internal error. Please contact Sybase Tech Support.
   

• Error: 706, Severity: 20, State: 3
  Process xxx tried to remove PROC_HDR 0xxxxxxxxx that it does not hold in Pss.

• A stack trace following the error message may include the following functions:

rm_prochdr
memfree
pars_release_resources
pars_hdl
memalloc
yylex
yyparse
sqlpars
internal_sql
s_readparseProcText

• SAP Adaptive Server Enterprise (ASE) 16.0 SP03 PL04 and SP03 PL05
• SAP Adaptive Server Enterprise (ASE) 15.7 SP140

kisignal, stacktrace, registers, crash, crashes, ueshutdown,  CR816352,  CR#816352,  816352, SEGV, segmentation, storage, access, violation, fault, segfault , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , Bug Filed