Messages in this thread | | | Date | Thu, 17 Aug 2023 15:24:44 -0600 | Subject | Re: [PATCH 7/7] wifi: cfg80211: Annotate struct cfg80211_tid_config with __counted_by | From | "Gustavo A. R. Silva" <> |
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On 8/17/23 15:15, 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 checking 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 cfg80211_tid_config. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Johannes Berg <johannes@sipsolutions.net> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Eric Dumazet <edumazet@google.com> > Cc: Jakub Kicinski <kuba@kernel.org> > Cc: Paolo Abeni <pabeni@redhat.com> > Cc: linux-wireless@vger.kernel.org > Cc: netdev@vger.kernel.org > Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Thanks -- Gustavo
> --- > include/net/cfg80211.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h > index a2afc94a5408..423fe9b85cb0 100644 > --- a/include/net/cfg80211.h > +++ b/include/net/cfg80211.h > @@ -811,7 +811,7 @@ struct cfg80211_tid_cfg { > struct cfg80211_tid_config { > const u8 *peer; > u32 n_tid_conf; > - struct cfg80211_tid_cfg tid_conf[]; > + struct cfg80211_tid_cfg tid_conf[] __counted_by(n_tid_conf); > }; > > /**
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