=> 0x289e81 <free+49>:	mov    0x4(%edx),%eax
   0x289e84 <free+52>:	test   $0x2,%al
   0x289e86 <free+54>:	jne    0x289ee0 <free+144>
   0x289e88 <free+56>:	test   $0x4,%al
   0x289e8a <free+58>:	lea    0x13cc(%ebx),%esi
   0x289e90 <free+64>:	je     0x289e9b <free+75>
   0x289e92 <free+66>:	mov    %edx,%eax
   0x289e94 <free+68>:	and    $0xfff00000,%eax
   0x289e99 <free+73>:	mov    (%eax),%esi
   0x289e9b <free+75>:	xor    %eax,%eax
   0x289e9d <free+77>:	mov    $0x1,%ecx
   0x289ea2 <free+82>:	cmpl   $0x0,%gs:0xc
   0x289eaa <free+90>:	je     0x289ead <free+93>
   0x289eac <free+92>:	lock cmpxchg %ecx,(%esi)
   0x289eb0 <free+96>:	jne    0x28b680
   0x289eb6 <free+102>:	mov    %esi,%eax