1925953 - Signal 11 with ASE crash at ssql__choose_victim or ssql_release

ASE is crashing in functions ssql__choose_victim or ssql_release with a signal 11 in errorlog.

For ssql__choose_victim()

... kernel  Current process (0x6b2d04f4) infected with signal 11 (SIGSEGV)
... kernel  Address 0x0000000100adcf48 (ssql__choose_victim+0x78), siginfo (code, address) = (51, 0x0000000000000008)
... kernel  **** Saved signal context (0x000000017c07e360): ****
... kernel  __sc_onstack: 0x0, __sc_uerror: 55
... kernel  uc_sigmask: 0xffffffff1ffef8770xffffffffffffffff0xffffffffffffffff0x7fffffffffffffff
... kernel  Machine Save State:
... kernel   PC (iar): 0000000100adcf48 (ssql__choose_victim+0x78)
... kernel   Link Register (lr): 0000000100adcc4c (ssql_save_SQL+0xaf8)
... kernel   Stack Pointer (stkp): 000000017c07e850
... kernel   msr : a00000000000d032ctr : 000000010180601ccr  : 22444880
...
... kernel  **** end of signal context ****
... kernel  Spinlocks held by  kpid 1798112500

... kernel  Spinlock SSQLCACHE_SPIN at address 000000016167ab40 owned by 1798112500
... kernel  End of spinlock display.
... kernel  pc: 0x0000000100032670pcstkwalk+0x78()
... kernel  pc: 0x0000000100031f9cucstkgentrace+0x310()
... kernel  pc: 0x0000000100031324ucbacktrace+0x178()
... kernel  pc: 0x00000001008273d0terminate_process.fdpr.chunk.1+0xac()
... kernel  pc: 0x000000010228dd44kisignal+0x464()
... kernel  pc: 0x0000000100adcf48ssql__choose_victim+0x78()
... kernel  pc: 0x0000000100adcc4cssql_save_SQL+0xaf8()
... kernel  pc: 0x0000000100ae1498sqt_put_in_stmtcache+0x100()
... kernel  pc: 0x00000001005bcb70s_compile.fdpr.chunk.5+0x2e4()
... kernel  [Handler pc: 0x0000000101a0dc98hdl_stack+0x0 installed by the following function:-]
... kernel  [Handler pc: 0x0000000101a0ded8 s_handle+0x0 installed by the following function:-]
... kernel  pc: 0x000000010175d914sequencer.fdpr.chunk.15+0x238()
... kernel  pc: 0x00000001017640f0execproc+0x424()
... kernel  pc: 0x000000010189bef8s_execute.fdpr.chunk.106+0xc0()
... kernel  [Handler pc: 0x0000000101a0dc98hdl_stack+0x0 installed by the following function:-]
... kernel  [Handler pc: 0x0000000101a0ded8 s_handle+0x0 installed by the following function:-]
... kernel  pc: 0x000000010175dfd8 sequencer+0x388()
... kernel  pc: 0x0000000100810628tdsrecv__dynexec+0x270()
... kernel  pc: 0x000000010080fe28tdsrecv_dynamic.fdpr.chunk.1+0x1cc()
... kernel  [Handler pc: 0x0000000101a0dce4ut_handle+0x0 installed by the following function:-]
... kernel  pc: 0x0000000101a2259cconn_hdlr.fdpr.chunk.20+0xc()
... kernel  end of stack trace, spid 139, kpid 1798112500, suid 6
... kernel  ueshutdown: exiting
... kernel  Main thread performing final shutdown.
... kernel  Unable to insert task into scheduler as the scheduler has already shutdown.

For ssql_release()

...  kernel  Current process (0x1caf0473) infected with signal 11 (SIGSEGV)
...  kernel  Address 0x0x00000000011349ea (ssql_release+0x95), siginfo (code, address) = (128, 0x(nil))
...  kernel  **** Saved signal context (0x0x000000015d0fb200): ****
...  kernel  uc_flags: 0x0, uc_link: 0x(nil)
...  kernel  uc_sigmask: 0x416000 0xb 0x80 0x0
...  kernel  uc_stack: ss_sp: 0x(nil), ss_size: 0x0, ss_flags: 0x2
...  kernel  General Registers (uc_mcontext.gregs):
...  kernel   PC : 0x00000000011349ea (ssql_release+0x95)
...
...  kernel  **** end of signal context ****
...  kernel  Spinlocks held by  kpid 481231987

...  kernel  Spinlock SSQLCACHE_SPIN at address 0x000000014483de40 owned by 481231987
...  kernel  End of spinlock display.
...  kernel  pc: 0x00000000014b01db pcstkwalk+0x3a3()
...  kernel  pc: 0x00000000014afcb3 ucstkgentrace+0x263()
...  kernel  pc: 0x00000000014abc2e ucbacktrace+0x50()
...  kernel  pc: 0x0000000000779c1c terminate_process+0x15bc()
...  kernel  pc: 0x00000000014fe638 kisignal+0x31f()
...  kernel  pc: 0x00000000011349ea ssql_release+0x95()
...  kernel  pc: 0x00000000007bddcd tdsrecv__dyndealloc+0x7a()
...  kernel  pc: 0x00000000007bc9cb tdsrecv_dynamic+0x1f0()
...  kernel  [Handler pc: 0x0x000000000140dc10 ut_handle installed by the following function:-]
...  kernel  pc: 0x00000000007d63e5 conn_hdlr+0x1be5()
...  kernel  end of stack trace, spid 491, kpid 481231987, suid 6
...  kernel  ueshutdown: exiting
...  kernel  Main thread performing final shutdown.

• SAP Adaptive Server Enterprise (ASE) 15.7 ESD #4.x, SP50 for Business Suite
• SAP Adaptive Server Enterprise (ASE) 15.7 SP100, SP101 and SP102 for Business Suite
• SAP Adaptive Server Enterprise (ASE) 15.7 ESD #4.x, SP50
• SAP Adaptive Server Enterprise (ASE) 15.7 SP100, SP101 and SP102

CR738117, 738117, ssql__choose_victim, ssql_release , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed