linux-kernel - Re: [RFC][PATCH] kconfig: introduce listunknownconfig

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20230817034443.GF681074@google.com>
Date:   Thu, 17 Aug 2023 12:44:43 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Sergey Senozhatsky <senozhatsky@...omium.org>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Jonathan Corbet <corbet@....net>,
        Tomasz Figa <tfiga@...omium.org>, linux-kbuild@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] kconfig: introduce listunknownconfig

On (23/08/17 10:19), Sergey Senozhatsky wrote:
> The listunknownconfig option reads old .config and lists
> all unrecognized symbols. This is especially useful for
> continuous kernel uprevs when some symbols can be either
> removed or renamed between kernel releases (which can go
> unnoticed otherwise).
> 
> A recent real-life example of such a symbol rename
> that quietly disabled some drivers after kernel uprev
> is MFD_RK808 rename.
> 
> Example:
> Suppose old .config has the following two options which
> were removed from the recent kernel:
> 
> $ cat .config
> CONFIG_DISABLE_BUGS=y

Uh, I see what happened there. The correct output is

    $ cat .config
     CONFIG_DISABLE_BUGS=y
     # CONFIG_ENABLE_WINAPI is not set