mlock2(&(0x7f0000ffe000/0x2000)=nil, 0x2000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x882c2, 0x0)
fallocate(r0, 0x10, 0x0, 0x1000004)
lseek(r0, 0x0, 0x4)