r0 = memfd_create(&(0x7f0000000340)='\x00', 0x6)
mmap(&(0x7f0000000000/0x2000)=nil, 0x2000, 0x0, 0x1d012, r0, 0x0)
madvise(&(0x7f0000002000/0x4000)=nil, 0x4000, 0x2)