Messages in this thread | | | Date | Fri, 20 Aug 2021 08:48:49 -0700 | From | Kees Cook <> | Subject | Re: [PATCH v2 22/63] HID: cp2112: Use struct_group() for memcpy() region |
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On Fri, Aug 20, 2021 at 03:01:43PM +0200, Jiri Kosina wrote: > On Tue, 17 Aug 2021, 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 cp2112_string_report around members report, > > length, type, and string, 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 > > report. > > > > "pahole" shows no size nor member offset changes to struct > > cp2112_string_report. "objdump -d" shows no meaningful object > > code changes (i.e. only source line number induced differences.) > > > > Cc: Jiri Kosina <jikos@kernel.org> > > Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> > > Cc: linux-input@vger.kernel.org > > Signed-off-by: Kees Cook <keescook@chromium.org> > > Applied, thanks.
I'm not sure if my other HTML email got through, but please don't apply these to separate trees -- struct_group() is introduced as part of this series.
-- Kees Cook
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