On Tue, Aug 17, 2021 at 11:05:19PM -0700, Kees Cook wrote: > 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. > > Cc: Chris Mason <clm@xxxxxx> > Cc: Josef Bacik <josef@xxxxxxxxxxxxxx> > Cc: David Sterba <dsterba@xxxxxxxx> > Cc: linux-btrfs@xxxxxxxxxxxxxxx > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Acked-by: David Sterba <dsterba@xxxxxxxx>
