GDB shows retq instruction (gdb) disassemble Dump of assembler code for function __read_nocancel: 0x00007fbd743e0e89 : mov $0x0,%eax 0x00007fbd743e0e8e : syscall => 0x00007fbd743e0e90 : cmp $0xfffffffffffff001,%rax 0x00007fbd743e0e96 : jae 0x7fbd743e0ec9 0x00007fbd743e0e98 : retq End of assembler dump. (gdb) Process Involved GPL Ghostscript 8.71. PostScript and PDF language interpreter and previewer. A Screen Shot GPL Ghostscript 8.71 …
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RET instruction :)
WinDbg shows RET Instruction 7c901042 c20400 ret 4 7c901045 52 push edx 7c901046 e8447f0100 call ntdll!RtlpWaitForCriticalSection (7c918f8f) 7c90104b 648b0d18000000 mov ecx,dword ptr fs:[18h] 7c901052 8b542404 mov edx,dword ptr [esp+4] 7c901056 ebc4 jmp ntdll!RtlEnterCriticalSection+0x17 (7c90101c) 7c901058 8da42400000000 lea esp,[esp] 7c90105f 8d9b00000000 lea ebx,[ebx] 7c901065 8b4124 mov eax,dword ptr [ecx+24h] 7c901068 39420c cmp dword ptr [edx+0Ch],eax 7c90106b …