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Date:   Sun, 26 Aug 2018 21:59:28 -0400 (EDT)
From:   Julia Lawall <julia.lawall@lip6.fr>
To:     Joe Perches <joe@perches.com>
cc:     Al Viro <viro@ZenIV.linux.org.uk>,
        Kees Cook <keescook@chromium.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Jamal Hadi Salim <jhs@mojatatu.com>,
        Cong Wang <xiyou.wangcong@gmail.com>,
        Jiri Pirko <jiri@resnulli.us>,
        "David S. Miller" <davem@davemloft.net>,
        Network Development <netdev@vger.kernel.org>
Subject: Re: [PATCH] net: sched: Fix memory exposure from short TCA_U32_SEL
In-Reply-To: <eca48539a3dede3bfaed9ab9a6c06794cf8160e0.camel@perches.com>
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References: <20180826055801.GA42063@beast>  <20180826061534.GT6515@ZenIV.linux.org.uk>  <CAGXu5jK7VzayzZTcxgZBf-+YHWO+Hv7s8utj2rzTc3gFtA8pFQ@mail.gmail.com>  <20180826173236.GU6515@ZenIV.linux.org.uk>  <d31fe59160e0b7d40e09536a3c74619ebb1f3b13.camel@perches.com>
  <20180826212421.GW6515@ZenIV.linux.org.uk> <eca48539a3dede3bfaed9ab9a6c06794cf8160e0.camel@perches.com>
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On Sun, 26 Aug 2018, Joe Perches wrote:

> On Sun, 2018-08-26 at 22:24 +0100, Al Viro wrote:
> > On Sun, Aug 26, 2018 at 11:57:57AM -0700, Joe Perches wrote:
> >
> > > > That, BTW, is why I hate the use of sizeof(*p) in kmalloc, etc.
> > > > arguments.  typeof is even worse in that respect.
> > >
> > > True.  Semantic searches via tools like coccinelle could help here
> > > but those searches are quite a bit slower than straightforward greps.
> >
> > Those searches are .config-sensitive as well, which can be much more
> > unpleasant than being slow...
>
> Are they?  Julia?

I don't completely understand the question.  Coccinelle doens't know
anything about the configuration.

julia