r0 = syz_open_procfs(0x0, &(0x7f0000000000)='net/ip6_tables_matches\x00')
r1 = dup(r0)
copy_file_range(r0, 0x0, r1, &(0x7f0000000100)=0xffffffffffffff7f, 0x13fffffffffffd, 0x0)