linux-kernel - Re: [PATCH] kcsan: fix section mismatch for __write_once_size/blacklisted

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] [day] [month] [year] [list]

Date:   Tue, 5 May 2020 16:11:50 +0100
From:   Will Deacon <will@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Marco Elver <elver@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Kees Cook <keescook@...omium.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        Alexander Potapenko <glider@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] kcsan: fix section mismatch for
 __write_once_size/blacklisted_initcalls

On Tue, May 05, 2020 at 05:05:36PM +0200, Arnd Bergmann wrote:
> On Tue, May 5, 2020 at 4:17 PM 'Marco Elver' via Clang Built Linux
> <clang-built-linux@...glegroups.com> wrote:
> > On Tue, 5 May 2020 at 16:11, Arnd Bergmann <arnd@...db.de> wrote:
> > > So far, my randconfig checks found two such instances, one for read_once
> > > and one for write_once. There are probably a couple more in random
> > > configurations, but I guess they are rare enough that we can just work
> > > around them like this.
> >
> > [+Cc Will]
> >
> > Thanks for testing and fixing this. Note that this may no longer be
> > necessary once Will's patches land. Also noted here:
> > https://lkml.kernel.org/r/CANpmjNNw6M9Gqj6WGTHH4Cegu8roTVu5x6Vqs_tCBxX3gPwL4A@mail.gmail.com
> >
> > For reference, Will's series:
> > https://lore.kernel.org/lkml/20200421151537.19241-1-will@kernel.org/
> 
> Right, good point. If that is going to get merged for the same release, we don't
> need my workarounds and I'll just keep them applied locally in my linux-next
> randconfig tree for the moment.

I'll send out a new version based on the kcsan stuff this week, so fingers
crossed for 5.8!

Will