linux-kernel - Re: [PATCH -rc 0/4] Protect from GCC garbage input in GCOV

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Date:   Wed, 2 Sep 2020 11:24:50 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Colin Ian King <colin.king@...onical.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH -rc 0/4] Protect from GCC garbage input in GCOV

On Wed, Sep 2, 2020 at 10:52 AM Leon Romanovsky <leon@...nel.org> wrote:
>
> Are you suggesting something like this?
>
> diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig
> index 3110c77230c7..bc0e355f64aa 100644
> --- a/kernel/gcov/Kconfig
> +++ b/kernel/gcov/Kconfig
> @@ -3,7 +3,7 @@ menu "GCOV-based kernel profiling"
>
>  config GCOV_KERNEL
>         bool "Enable gcov-based kernel profiling"
> -       depends on DEBUG_FS
> +       depends on DEBUG_FS && (GCC_VERSION >= XXX && GCC_VERSION < YYY)
>         select CONSTRUCTORS if !UML
>         default n
>         help

Yes. Except please don't mix it up with DEBUG_FS. Just add a new
"depends on" line. They are separate issues.

              Linus