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2026001 - Server stack traced with signal 11. Left a zombie process. lock__semawait -SAP ASE

Symptom

  • Server stack traced with signal 11.
  • Left a zombie process.
  • Recycle required to clean this up.
  • Example of the stack:

Current process (0xa1b04f0) infected with signal 11 (SIGSEGV)
Address 0x0x0000000000da4441 (lock__semawait+0x2571), siginfo (code, address) = (128, 0x(nil))
**** Saved signal context (0x0x00002aab418ef3c0): ****
uc_flags: 0x1, uc_link: 0x(nil)
uc_sigmask: 0x416000 0xb 0x80 0x0
uc_stack: ss_sp: 0x (nil), ss_size: 0x0, ss_flags: 0x2
General Registers (uc_mcontext.gregs):
PC : 0x0000000000da4441 (lock__semawait+0x2571)
RAX : 0x0000000026e978d6 RBX : (nil)
RCX : 0x6d397068597a7667 RDX : (nil)
RBP : 0x00002aab418efc90 RSP : 0x00002aab418ef960
R8 : 0x00002aaacbbe6500 R9 : 0x00002aac42a42d30
R10 : 0x0000000000000001 R11 : 0x0000000010624dd3
R12 : 0x0000000002888ee8 R13 : 0x00002aaddb52a860 
R14 : (nil) R15 : 0x00002aaacbc12b80
RDI : 0x00002aab418efc40 RSI : 0x0000000000000012
RIP : 0x0000000000da4441 CSGSFS : 0x0000000000000033
TRAPNO : 0x000000000000000d ERR : (nil)
EFL : 0x0000000000010246
**** end of signal
context ****


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Environment

SAP Adaptive Server Enterprise (ASE)  15.7

Product

SAP Adaptive Server Enterprise 15.7

Keywords

trigger, memdump, hung , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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