linux-kernel - Re: [PATCH 1/4] modpost: delegate updating namespaces to separate function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20191011153253.GB1283883@kroah.com>
Date:   Fri, 11 Oct 2019 17:32:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Matthias Maennich <maennich@...gle.com>
Cc:     linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        Jessica Yu <jeyu@...nel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Martijn Coenen <maco@...roid.com>,
        Lucas De Marchi <lucas.de.marchi@...il.com>,
        Shaun Ruffell <sruffell@...ffell.net>,
        Will Deacon <will@...nel.org>, linux-kbuild@...r.kernel.org,
        linux-modules@...r.kernel.org
Subject: Re: [PATCH 1/4] modpost: delegate updating namespaces to separate
 function

On Thu, Oct 10, 2019 at 04:14:40PM +0100, Matthias Maennich wrote:
> Let the function 'sym_update_namespace' take care of updating the
> namespace for a symbol. While this currently only replaces one single
> location where namespaces are updated, in a following patch, this
> function will get more call sites.
> 
> The function signature is intentionally close to sym_update_crc and
> taking the name by char* seems like unnecessary work as the symbol has
> to be looked up again. In a later patch of this series, this concern
> will be addressed.
> 
> This function ensures that symbol::namespace is either NULL or has a
> valid non-empty value. Previously, the empty string was considered 'no
> namespace' as well and this lead to confusion.
> 
> Signed-off-by: Matthias Maennich <maennich@...gle.com>
> ---
>  scripts/mod/modpost.c | 21 ++++++++++++++++++---
>  1 file changed, 18 insertions(+), 3 deletions(-)
> 
> diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
> index 4d2cdb4d71e3..9f5dcdff4d2f 100644
> --- a/scripts/mod/modpost.c
> +++ b/scripts/mod/modpost.c
> @@ -362,6 +362,22 @@ static char *sym_extract_namespace(const char **symname)
>  	return namespace;
>  }
>  
> +static void sym_update_namespace(const char *symname, const char *namespace)
> +{
> +       struct symbol *s = find_symbol(symname);
> +       /* That symbol should have been created earlier and thus this is
> +        * actually an assertion. */

Do we care about checkpatch issues in tools?

If so, you need a blank line before the comment :)

Anyway, not a big deal

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>