3013683 - Error 632 and signal 11 in kbfalloc() or ubffreef() - SAP ASE 16.0

• ASE errorlog reports (many) Error 632 with a stack trace:

Error: 632, Severity: 20, State: 2
Attempt to move memory with an incorrect length of 25640. Maximum allowed length is 16384.

• Stack traces can include memmove(), memmove_error() and/or txcomp__getplaintxt(), for example:

memmove_error
txcomp__getplaintxt
sendimgblks
text_handler
sendtext
LeSendRow::_sendColsToClient
LeSendRow::sendRowToClient
LeEmitSndOp::_LeEoRouteResults
LeEmitSndOp::_LeOpNext

  Note: Full example of errors and stack traces in attached file KBA_632_Stacks_Example.txt

• In some cases, Error 632 may be followed by a signal 11 at address kbfalloc() or ubffreef():

Current process (0x442b0118) infected with signal 11 (SIGSEGV)
Address 0x0x0000000002212e8d (kbfalloc+0x80d), siginfo (code, address) = (128, 0x(nil))

• The respective stack traces for these Signal 11 errors include:

kbfalloc
ubfallocf
createpool_n_alloc
memallocheap
txcomp__init_cpct
txcp_const_to_txpgs
inserttext
updatetext
updtext

ubffreef
txcomp__cleanup
text_handler
sendtext

• These signal 11 may in turn crash the ASE server when hitting secondary signal failure :

FATAL UNHANDLED EXCEPTION: signal 11 hit while handling a previously hit signal. The server cannot continue and will shut down.

• SAP Adaptive Server Enterprise (ASE) 16.0 for Business Suite
• SAP Enterprise Resource Planning (ERP) 6.0

632, memmove, txcomp__getplaintxt, sendtext, LeSendRow::_sendColsToClient, LOB, CR#823684, CR 823684, CR823684, 823684 , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed