r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x8a2c2, 0x0)
fallocate(r0, 0x0, 0x0, 0x1000002)
ftruncate(r0, 0x7f)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x1000009, 0x1f012, r0, 0x0)
lseek(r0, 0x0, 0x4)