| Message ID | 20221118211207.never.039-kees@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/nouveau/fb/ga102: Replace zero-length array of trailing structs with flex-array | expand |
On Fri, Nov 18, 2022 at 01:12:08PM -0800, Kees Cook wrote: > Zero-length arrays are deprecated[1] and are being replaced with > flexible array members in support of the ongoing efforts to tighten the > FORTIFY_SOURCE routines on memcpy(), correctly instrument array indexing > with UBSAN_BOUNDS, and to globally enable -fstrict-flex-arrays=3. > > Replace zero-length array with flexible-array member. > > This results in no differences in binary output. > > [1] https://github.com/KSPP/linux/issues/78 > > Cc: Ben Skeggs <bskeggs@redhat.com> > Cc: Karol Herbst <kherbst@redhat.com> > Cc: Lyude Paul <lyude@redhat.com> > Cc: David Airlie <airlied@gmail.com> > Cc: Daniel Vetter <daniel@ffwll.ch> > Cc: Gourav Samaiya <gsamaiya@nvidia.com> > Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> > Cc: dri-devel@lists.freedesktop.org > Cc: nouveau@lists.freedesktop.org > Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks! -- Gustavo > --- > drivers/gpu/drm/nouveau/include/nvfw/hs.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/nouveau/include/nvfw/hs.h b/drivers/gpu/drm/nouveau/include/nvfw/hs.h > index 8c4cd08a7b5f..8b58b668fc0c 100644 > --- a/drivers/gpu/drm/nouveau/include/nvfw/hs.h > +++ b/drivers/gpu/drm/nouveau/include/nvfw/hs.h > @@ -52,7 +52,7 @@ struct nvfw_hs_load_header_v2 { > struct { > u32 offset; > u32 size; > - } app[0]; > + } app[]; > }; > > const struct nvfw_hs_load_header_v2 *nvfw_hs_load_header_v2(struct nvkm_subdev *, const void *); > -- > 2.34.1 >
diff --git a/drivers/gpu/drm/nouveau/include/nvfw/hs.h b/drivers/gpu/drm/nouveau/include/nvfw/hs.h index 8c4cd08a7b5f..8b58b668fc0c 100644 --- a/drivers/gpu/drm/nouveau/include/nvfw/hs.h +++ b/drivers/gpu/drm/nouveau/include/nvfw/hs.h @@ -52,7 +52,7 @@ struct nvfw_hs_load_header_v2 { struct { u32 offset; u32 size; - } app[0]; + } app[]; }; const struct nvfw_hs_load_header_v2 *nvfw_hs_load_header_v2(struct nvkm_subdev *, const void *);
Zero-length arrays are deprecated[1] and are being replaced with flexible array members in support of the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy(), correctly instrument array indexing with UBSAN_BOUNDS, and to globally enable -fstrict-flex-arrays=3. Replace zero-length array with flexible-array member. This results in no differences in binary output. [1] https://github.com/KSPP/linux/issues/78 Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Karol Herbst <kherbst@redhat.com> Cc: Lyude Paul <lyude@redhat.com> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Gourav Samaiya <gsamaiya@nvidia.com> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/gpu/drm/nouveau/include/nvfw/hs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)