=> 0x7f577f1db8c3 <free+83>:	lock cmpxchg %esi,(%rbx)
   0x7f577f1db8c7 <free+87>:	jne    0x7f577f1dd800
   0x7f577f1db8cd <free+93>:	jmp    0x7f577f1db8d8 <free+104>
   0x7f577f1db8cf <free+95>:	cmpxchg %esi,(%rbx)
   0x7f577f1db8d2 <free+98>:	jne    0x7f577f1dd800
   0x7f577f1db8d8 <free+104>:	mov    %r8,%rsi
   0x7f577f1db8db <free+107>:	mov    %rbx,%rdi
   0x7f577f1db8de <free+110>:	callq  0x7f577f1d7200
   0x7f577f1db8e3 <free+115>:	cmpl   $0x0,0x3278fe(%rip)        # 0x7f577f5031e8
   0x7f577f1db8ea <free+122>:	je     0x7f577f1db8f7 <free+135>
   0x7f577f1db8ec <free+124>:	lock decl (%rbx)
   0x7f577f1db8ef <free+127>:	jne    0x7f577f1dd81b
   0x7f577f1db8f5 <free+133>:	jmp    0x7f577f1db8ff <free+143>
   0x7f577f1db8f7 <free+135>:	decl   (%rbx)
   0x7f577f1db8f9 <free+137>:	jne    0x7f577f1dd81b
   0x7f577f1db8ff <free+143>:	add    $0x20,%rsp