On Tue, Aug 17, 2021 at 11:04:43PM -0700, Kees Cook wrote: > In preparation for FORTIFY_SOURCE performing compile-time and run-time > field bounds checking for memcpy(), memmove(), and memset(), avoid > intentionally writing across neighboring fields. > > Use struct_group() in struct ivhd_entry around members ext and hidh, so > they can be referenced together. This will allow memcpy() and sizeof() > to more easily reason about sizes, improve readability, and avoid future > warnings about writing beyond the end of ext. > > "pahole" shows no size nor member offset changes to struct ivhd_entry. > "objdump -d" shows no object code changes. > > Cc: Joerg Roedel <joro@xxxxxxxxxx> > Cc: Will Deacon <will@xxxxxxxxxx> > Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Acked-by: Joerg Roedel <jroedel@xxxxxxx>
