netdev - Re: [PATCH 2/2] mlxsw: spectrum_router: avoid potential uninitialized data usage

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: <201610010536.30927.arnd@arndb.de>
Date:   Sat, 1 Oct 2016 05:36:30 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Ido Schimmel <idosch@...sch.org>
Cc:     Jiri Pirko <jiri@...lanox.com>, Ido Schimmel <idosch@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>,
        Yotam Gigi <yotamg@...lanox.com>,
        Nogah Frankel <nogahf@...lanox.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] mlxsw: spectrum_router: avoid potential uninitialized data usage

On Friday 30 September 2016, Ido Schimmel wrote:
> BTW, which flags did you pass to generate this error? I can only
> reproduce this with EXTRA_CFLAGS="-Wmaybe-uninitialized -Werror", but
> for some reason EXTRA_CFLAGS="-Wall -Werror" is silent. Any idea why? I
> would like to add this to my git hooks and avoid these errors in the
> future :)

Linus disabled the warning for v4.8. I've just talked to him today about this
warning in particular, and hope that we can find a way to enable it by
default again in the future, as a lot of possible bugs get introduced,
but certain compiler versions also produce a lot of false positives.

	Arnd