On Thu, Aug 19, 2021 at 04:19:37PM +0300, Kalle Valo wrote: > Kees Cook <keescook@xxxxxxxxxxxx> writes: > > > In preparation for FORTIFY_SOURCE performing compile-time and run-time > > field bounds checking for memset(), avoid intentionally writing across > > neighboring fields. > > > > Use memset_startat() so memset() doesn't get confused about writing > > beyond the destination member that is intended to be the starting point > > of zeroing through the end of the struct. Additionally split up a later > > field-spanning memset() so that memset() can reason about the size. > > > > Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx> > > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > > Cc: Jakub Kicinski <kuba@xxxxxxxxxx> > > Cc: ath11k@xxxxxxxxxxxxxxxxxxx > > Cc: linux-wireless@xxxxxxxxxxxxxxx > > Cc: netdev@xxxxxxxxxxxxxxx > > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> > > To avoid conflicts I prefer taking this via my ath tree. The memset helpers are introduced as part of this series, so that makes things more difficult. Do you want me to create a branch with the helpers that you can merge? -Kees -- Kees Cook
