r0 = memfd_create(&(0x7f00000000c0), 0x0)
pwritev2(r0, &(0x7f0000000600)=[{&(0x7f0000000180)='3', 0x1}], 0x1, 0x0, 0x0, 0x0)
readv(r0, &(0x7f00000000c0)=[{&(0x7f0000000000)=""/143, 0x8f}], 0x1)