In function '__nat25_add_pppoe_tag',
    inlined from 'nat25_db_handle' at drivers/staging/r8188eu/core/rtw_br_ext.c:479:11:
drivers/staging/r8188eu/core/rtw_br_ext.c:81:9: warning: 'memcpy' forming offset [40, 2051] is out of the bounds [0, 40] of object 'tag_buf' with type 'unsigned char[40]' [-Warray-bounds]
   81 |         memcpy((unsigned char *)ph->tag, tag, data_len);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/staging/r8188eu/core/rtw_br_ext.c: In function 'nat25_db_handle':
drivers/staging/r8188eu/core/rtw_br_ext.c:447:63: note: 'tag_buf' declared here
  447 |                                                 unsigned char tag_buf[40];
      |                                                               ^~~~~~~