On Fri, May 26, 2017 at 01:17:12PM -0700, Kees Cook wrote: > The NIU ethernet driver intentionally stores a page struct pointer on > top of the "mapping" field. Whitelist this case: > > drivers/net/ethernet/sun/niu.c: In function ‘niu_rx_pkt_ignore’: > drivers/net/ethernet/sun/niu.c:3402:10: note: found mismatched ssa struct > pointer types: ‘struct page’ and ‘struct address_space’ > > *link = (struct page *) page->mapping; > ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Cc: David S. Miller <[email protected]> > Signed-off-by: Kees Cook <[email protected]>
The driver really needs to stop doing this anyway. It would be good to send this out to linux-mm and netdev to come up with a better scheme.
