r0 = memfd_create(&(0x7f0000000000)='\x00', 0x0)
r1 = memfd_create(&(0x7f0000000000)='\a', 0x0)
pwritev2(r1, &(0x7f0000000140)=[{&(0x7f0000000040)='u', 0x1}], 0x1, 0x100009, 0x0, 0x0)
copy_file_range(r1, &(0x7f0000000080), r0, 0x0, 0x7, 0x0)