linux-kernel - Re: [PATCH] rust: fix bindgen build error with UBSAN_BOUNDS

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Message-ID: <CANiq72n3NMU5UgnGNB5B=y9QjpiHzw1turEbKCy5AEKccEUE0A@mail.gmail.com>
Date:   Wed, 2 Aug 2023 19:37:58 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Andrea Righi <andrea.righi@...onical.com>
Cc:     Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        Kees Cook <keescook@...omium.org>,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rust: fix bindgen build error with UBSAN_BOUNDS_STRICT

On Tue, Jul 11, 2023 at 9:19 AM Andrea Righi <andrea.righi@...onical.com> wrote:
>
> With commit 2d47c6956ab3 ("ubsan: Tighten UBSAN_BOUNDS on GCC") if
> CONFIG_UBSAN is enabled and gcc supports -fsanitize=bounds-strict, we
> can trigger the following build error due to bindgen lacking support for
> this additional build option:
>
>    BINDGEN rust/bindings/bindings_generated.rs
>  error: unsupported argument 'bounds-strict' to option '-fsanitize='
>
> Fix by adding -fsanitize=bounds-strict to the list of skipped gcc flags
> for bindgen.
>
> Fixes: 2d47c6956ab3 ("ubsan: Tighten UBSAN_BOUNDS on GCC")
> Signed-off-by: Andrea Righi <andrea.righi@...onical.com>

Applied to `rust-fixes`, thanks!

Cheers,
Miguel