r0 = memfd_create(&(0x7f0000000340)=',', 0x0) pwritev2(r0, &(0x7f0000000140)=[{&(0x7f00000002c0)='t', 0x1}], 0x1, 0x100009, 0x0, 0x0) pread64(r0, 0x0, 0x0, 0x0)