linux-kernel - Re: [PATCH] ubsan: add prototypes for internal functions

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Message-Id: <168548693422.1303000.13322516962032319887.b4-ty@chromium.org>
Date:   Tue, 30 May 2023 15:48:55 -0700
From:   Kees Cook <keescook@...omium.org>
To:     arnd@...nel.org, kasan-dev@...glegroups.com
Cc:     Kees Cook <keescook@...omium.org>, peterz@...radead.org,
        ardb@...nel.org, maskray@...gle.com, mingo@...nel.org,
        mark.rutland@....com, Arnd Bergmann <arnd@...db.de>,
        linux-kernel@...r.kernel.org, mcgrof@...nel.org,
        quic_mojha@...cinc.com
Subject: Re: [PATCH] ubsan: add prototypes for internal functions

On Wed, 17 May 2023 14:50:34 +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> Most of the functions in ubsan that are only called from generated
> code don't have a prototype, which W=1 builds warn about:
> 
> lib/ubsan.c:226:6: error: no previous prototype for '__ubsan_handle_divrem_overflow' [-Werror=missing-prototypes]
> lib/ubsan.c:307:6: error: no previous prototype for '__ubsan_handle_type_mismatch' [-Werror=missing-prototypes]
> lib/ubsan.c:321:6: error: no previous prototype for '__ubsan_handle_type_mismatch_v1' [-Werror=missing-prototypes]
> lib/ubsan.c:335:6: error: no previous prototype for '__ubsan_handle_out_of_bounds' [-Werror=missing-prototypes]
> lib/ubsan.c:352:6: error: no previous prototype for '__ubsan_handle_shift_out_of_bounds' [-Werror=missing-prototypes]
> lib/ubsan.c:394:6: error: no previous prototype for '__ubsan_handle_builtin_unreachable' [-Werror=missing-prototypes]
> lib/ubsan.c:404:6: error: no previous prototype for '__ubsan_handle_load_invalid_value' [-Werror=missing-prototypes]
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] ubsan: add prototypes for internal functions
      https://git.kernel.org/kees/c/d25ad53db59e

-- 
Kees Cook