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

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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