Re: [PATCH RESEND 1/3] printk: convert byte-buffer to variable-lengthrecord buffer

From: Linus Torvalds
Date: Thu May 10 2012 - 17:58:29 EST

On Thu, May 10, 2012 at 2:11 PM, Joe Perches <joe@xxxxxxxxxxx> wrote:
> I think it's a distinction without a difference for,
> as fas as I know, that's a case that doesn't exist
> in the current kernel.

So? Even if we hadn't had this bug before (we have), your argument is
utter crap. Even if we weren't to have that patter right *now*, that
doesn't mean that it cannot happen.

Your grep is also not at all exhaustive. What if somebody does


how are you going to prove that '%s' doesn't contain a level marker
thing? It's much easier to just say "use a KERN_CONT" (or more
commonly KERN_DEFAULT) to avoid the problem.

We do need an escape model. The current KERN_CONT does that. Stop
arguing for crap.

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