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2543393 - INSERT raises infected with signal 11 at kbfalloc - SAP ASE


  • First, the process exhausts the lock pool raising error 1204  (other user processes are also raising the same error)
    Error: 1204, Severity: 17, State: 2 occurred for User xxxx
    ASE has run out of LOCKS. Re-run your command when there are fewer active users, or contact a user with System Administrator (SA) role to reconfigure ASE with more  LOCKS
  • Next, for the same process a message is logged indicating possible heap memory corruption
    kbfalloc() retrieved null MEMFRAG from free list at 0x0x2aaab7dbfe10. Heap memory corruption may have occurred.
  • ASE then infects this process and  stacktraces at kbfalloc() while attempting to rollback the transaction   
  • Common to these stacktraces are temporary table drop attempts along with a 'last error' value of 1204
    kernel  Current process (0x12b30103) infected with signal 11 (SIGSEGV)
    kernel  Address 0x0x000000000160846f (kbfalloc+0xb2f), siginfo (code, address) = (1, 0x0x0000000000000010)
    kernel  General Registers (uc_mcontext.gregs):
    kernel  (kbfalloc+0xb2f)
    <register snip>
    kernel  lasterror = 1204 preverror = 0 transtate = 0
    kernel  curcmd = 195 program = xxx
    kernel  terminate_process+0x1144()
    kernel  kisignal+0x31f()
    kernel  kbfalloc+0xb2f()
    kernel  ubfallocf+0x1d()
    kernel  createpool_n_alloc+0x31()
    kernel  memallocheap+0xcf()
    kernel  scan_get_rowbuf+0x50()
    kernel  rec_undo_session+0xc8a()
    kernel  abort__all+0x59()
    kernel  xact__rollbackxact+0x2d6()
    kernel  xact__rollback_local+0x31()
    kernel  dropo+0x274f()
    kernel  drop_with_retry+0xb4()
    kernel  tmp_alldrop+0x118()
    kernel  s_free+0xa05()
    kernel  s_pop+0x333()
    kernel  s_cleanframe+0x145()
    kernel  s_handle+0xb21()
    kernel  exc__raise+0x325()
    kernel  exc_raise+0x10c()
    kernel  s_remap_lockid+0x332()
    kernel  s_lockstmt+0x149()
    kernel  s_execute+0x1c29()
    kernel  sequencer+0x29e7()
    kernel  execproc+0x762()
    kernel  execrpc+0x7eb()
    kernel  tdsrecv_rpc+0x1c()
    kernel  end of stack trace, spid 655, kpid 313721091, suid -1595



SAP Adaptive Server Enterprise (ASE) 15.7 SP13x


SAP Adaptive Server Enterprise 15.7


KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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