=> 0x7f0f1d5d61cd <free+29>:	mov    -0x8(%rdi),%rsi
   0x7f0f1d5d61d1 <free+33>:	lea    -0x10(%rdi),%r8
   0x7f0f1d5d61d5 <free+37>:	test   $0x2,%sil
   0x7f0f1d5d61d9 <free+41>:	jne    0x7f0f1d5d6248 <free+152>
   0x7f0f1d5d61db <free+43>:	and    $0x4,%esi
   0x7f0f1d5d61de <free+46>:	lea    0x301fbb(%rip),%rbx        # 0x7f0f1d8d81a0
   0x7f0f1d5d61e5 <free+53>:	je     0x7f0f1d5d61f3 <free+67>
   0x7f0f1d5d61e7 <free+55>:	mov    %r8,%rax
   0x7f0f1d5d61ea <free+58>:	and    $0xfffffffffc000000,%rax
   0x7f0f1d5d61f0 <free+64>:	mov    (%rax),%rbx
   0x7f0f1d5d61f3 <free+67>:	mov    $0x1,%esi
   0x7f0f1d5d61f8 <free+72>:	xor    %eax,%eax
   0x7f0f1d5d61fa <free+74>:	cmpl   $0x0,0x305fe7(%rip)        # 0x7f0f1d8dc1e8
   0x7f0f1d5d6201 <free+81>:	je     0x7f0f1d5d620f <free+95>
   0x7f0f1d5d6203 <free+83>:	lock cmpxchg %esi,(%rbx)
   0x7f0f1d5d6207 <free+87>:	jne    0x7f0f1d5d8160