linux-kernel - Re: [PATCH 01/12] x86/mce: use correct format characters

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Message-ID: <3a773edf-f850-e83d-828d-19f91a373384@infradead.org>
Date:   Thu, 9 Jun 2022 16:14:57 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Bill Wendling <morbo@...gle.com>, isanbard@...il.com
Cc:     Tony Luck <tony.luck@...el.com>, Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Jan Kara <jack@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Daniel Kiper <daniel.kiper@...cle.com>,
        Ross Philipson <ross.philipson@...cle.com>,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-mm@...ck.org,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, alsa-devel@...a-project.org,
        llvm@...ts.linux.dev
Subject: Re: [PATCH 01/12] x86/mce: use correct format characters



On 6/9/22 15:16, Bill Wendling wrote:
> From: Bill Wendling <isanbard@...il.com>
> 
> When compiling with -Wformat, clang emits the following warnings:
> 
> arch/x86/kernel/cpu/mce/core.c:295:9: error: format string is not a string literal (potentially insecure) [-Werror,-Wformat-security]
>                 panic(msg);
>                       ^~~
> 
> Use a string literal for the format string.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/378
> Signed-off-by: Bill Wendling <isanbard@...il.com>
> ---
>  arch/x86/kernel/cpu/mce/core.c | 2 +-
>  scripts/Makefile.extrawarn     | 4 ++--

Where is the scripts/ change?

>  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
> index 2c8ec5c71712..3d411b7c85ad 100644
> --- a/arch/x86/kernel/cpu/mce/core.c
> +++ b/arch/x86/kernel/cpu/mce/core.c
> @@ -292,7 +292,7 @@ static noinstr void mce_panic(const char *msg, struct mce *final, char *exp)
>  	if (!fake_panic) {
>  		if (panic_timeout == 0)
>  			panic_timeout = mca_cfg.panic_timeout;
> -		panic(msg);
> +		panic("%s", msg);
>  	} else
>  		pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg);
>  

-- 
~Randy