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: <20161223121307.GO3107@twins.programming.kicks-ass.net>
Date:   Fri, 23 Dec 2016 13:13:07 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Nicolai Hähnle <nhaehnle@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Nicolai Hähnle <Nicolai.Haehnle@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Maarten Lankhorst <dev@...ankhorst.nl>,
        Daniel Vetter <daniel@...ll.ch>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v3 05/12] locking/ww_mutex: Remove the __ww_mutex_lock
 inline wrappers

On Fri, Dec 23, 2016 at 12:16:03PM +0100, Nicolai Hähnle wrote:

> >For some reason this patch appears to make lib/locking-selftest.c really
> >unhappy.
> >
> >I get endless streams of:
> >
> >../lib/locking-selftest.c: In function ‘ww_test_fail_acquire’:
> >../lib/locking-selftest.c:1141:6: error: void value not ignored as it ought to be
> >  ret = WWL(&o, &t);
> >      ^
> >
> >Apparently GCC gets confused about __much_check on inline functions or
> >something, or I got the patch wrong.
> 
> Weird, I'm not getting that, and it makes no sense either from a quick
> glimpse of the code. Is there anything beside
> CONFIG_DEBUG_LOCKING_API_SELFTESTS I would have to enable to trigger this?

Not entirely sure, I'm building an allmodconfig.

> FWIW:
> 
> $ gcc --version
> gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609

gcc (Debian 6.2.1-5) 6.2.1 20161124

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ