r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x882c2, 0x0)
ftruncate(r0, 0x5)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x100000f, 0x1f012, r0, 0x0)
r1 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
readv(r1, &(0x7f0000000280)=[{&(0x7f00000002c0)=""/4091, 0xffb}], 0x1)