mlock2(&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x0)
mremap(&(0x7f0000ffc000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000ffb000/0x1000)=nil)
madvise(&(0x7f0000fff000/0x1000)=nil, 0x1000, 0x8)