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Message-ID: <e1292bf3-678d-3ea8-c8dd-fcb106caa9d3@kernel.org> Date: Tue, 3 Oct 2023 17:36:22 -0600 From: David Ahern <dsahern@...nel.org> To: Kees Cook <keescook@...omium.org> Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org, "Gustavo A. R. Silva" <gustavoars@...nel.org>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org, llvm@...ts.linux.dev Subject: Re: [PATCH] nexthop: Annotate struct nh_res_table with __counted_by On 10/3/23 5:18 PM, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for > array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct nh_res_table. > > Cc: David Ahern <dsahern@...nel.org> > Cc: "David S. Miller" <davem@...emloft.net> > Cc: Eric Dumazet <edumazet@...gle.com> > Cc: Jakub Kicinski <kuba@...nel.org> > Cc: Paolo Abeni <pabeni@...hat.com> > Cc: netdev@...r.kernel.org > Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci [1] > Signed-off-by: Kees Cook <keescook@...omium.org> > --- > include/net/nexthop.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > Reviewed-by: David Ahern <dsahern@...nel.org>
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