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

From: Randy Dunlap
Date: Thu Jun 09 2022 - 19:16:20 EST




On 6/9/22 15:16, Bill Wendling wrote:
> From: Bill Wendling <isanbard@xxxxxxxxx>
>
> 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@xxxxxxxxx>
> ---
> 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