linux-hardening - Re: the nul-terminated string helper desk chair rearrangement

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Date: Thu, 26 Oct 2023 10:27:45 -0400
From: James Bottomley <James.Bottomley@...senPartnership.com>
To: Andrew Lunn <andrew@...n.ch>, Christoph Hellwig <hch@....de>
Cc: Kees Cook <keescook@...omium.org>, Justin Stitt
 <justinstitt@...gle.com>,  Keith Busch <kbusch@...nel.org>, Jens Axboe
 <axboe@...nel.dk>, Sagi Grimberg <sagi@...mberg.me>, 
 linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-hardening@...r.kernel.org, ksummit@...ts.linux.dev
Subject: Re: the nul-terminated string helper desk chair rearrangement

On Thu, 2023-10-26 at 15:44 +0200, Andrew Lunn wrote:
> > > > [1]:
> > > > https://elixir.bootlin.com/linux/v6.6-rc6/source/include/linux/fortify-string.h#L292
> 
> I found that https://elixir.bootlin.com/linux

That's a 404, I think you mean

https://elixir.bootlin.com/linux/latest/source

>  is the best way to find Documentation for functions and structures.
> I would suggest try it first, and only when what fails to start using
> grep.

I just tried it with system_state and it doesn't even find the
definition.  I think it might be because it has annotations which
confuse the searcher (it's in init/main.c as

 enum system_states system_state __read_mostly;

).  If there's any meaningful doc about it, elixir also doesn't find
it.

James