linux-hardening - Re: [PATCH] efi/libstub: make memory protection warnings include newlines.

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Message-ID: <CAMj1kXEbY5C_UjK3O=BodGaDRMW4OYgO=SOoNwc7XA+j2L1wVg@mail.gmail.com>
Date:   Wed, 19 Oct 2022 09:44:29 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Peter Jones <pjones@...hat.com>
Cc:     Evgeniy Baskov <baskov@...ras.ru>, Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Alexey Khoroshilov <khoroshilov@...ras.ru>,
        lvc-project@...uxtesting.org, x86@...nel.org,
        linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH] efi/libstub: make memory protection warnings include newlines.

On Tue, 18 Oct 2022 at 22:51, Peter Jones <pjones@...hat.com> wrote:
>
> efi_warn() doesn't put newlines on messages, and that makes reading
> warnings without newlines hard to do.
>
> Signed-off-by: Peter Jones <pjones@...hat.com>

OK, so this applies on top of Evgeniy's series, right? Do we need a
version for 6.1-rc1 ?

> ---
>  drivers/firmware/efi/libstub/mem.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/firmware/efi/libstub/mem.c b/drivers/firmware/efi/libstub/mem.c
> index 4d6c7f4fb7e..1b874096109 100644
> --- a/drivers/firmware/efi/libstub/mem.c
> +++ b/drivers/firmware/efi/libstub/mem.c
> @@ -293,7 +293,7 @@ efi_status_t efi_adjust_memory_range_protection(unsigned long start,
>                                 rounded_end - rounded_start,
>                                 attr_clear);
>         if (status != EFI_SUCCESS) {
> -               efi_warn("Failed to clear memory attributes at [%08lx,%08lx]: %lx",
> +               efi_warn("Failed to clear memory attributes at [%08lx,%08lx]: %lx\n",
>                          (unsigned long)rounded_start,
>                          (unsigned long)rounded_end,
>                          status);
> @@ -306,7 +306,7 @@ efi_status_t efi_adjust_memory_range_protection(unsigned long start,
>                                 rounded_end - rounded_start,
>                                 attributes);
>         if (status != EFI_SUCCESS) {
> -               efi_warn("Failed to set memory attributes at [%08lx,%08lx]: %lx",
> +               efi_warn("Failed to set memory attributes at [%08lx,%08lx]: %lx\n",
>                          (unsigned long)rounded_start,
>                          (unsigned long)rounded_end,
>                          status);
> --
> 2.37.1
>