if (get_next_rand_offset(td, f, ddir, &b))
return 1;
- } else
+ } else {
+ if (f->last_pos >= f->real_file_size)
+ return 1;
+
b = f->last_pos / td->o.min_bs[ddir];
+ }
io_u->offset = (b * td->o.min_bs[ddir]) + f->file_offset;
if (io_u->offset >= f->real_file_size)