munmap(&(0x7f0000ffd000/0x1000)=nil, 0x1000)
mprotect(&(0x7f0000ffa000/0x4000)=nil, 0x4000, 0x0)
mremap(&(0x7f0000ffa000/0x3000)=nil, 0x3000, 0x4000, 0x0, &(0x7f0000ffc000/0x4000)=nil)