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Subject: Re: [PATCH] lib/vsprintf: make-printk-non-secret printks all
 addresses as unhashed
To:     Kees Cook <keescook@chromium.org>
Cc:     Petr Mladek <pmladek@suse.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        willy@infradead.org, akpm@linux-foundation.org,
        torvalds@linux-foundation.org, roman.fietze@magna.com,
        john.ogness@linutronix.de, akinobu.mita@gmail.com
References: <20210202201846.716915-1-timur@kernel.org>
 <202102021351.AEDE896AB3@keescook>
From:   Timur Tabi <timur@kernel.org>
Message-ID: <9ce56a1c-9ea6-996b-84c6-cfde908c2ecd@kernel.org>
Date:   Tue, 2 Feb 2021 16:19:20 -0600
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On 2/2/21 3:52 PM, Kees Cook wrote:
>> A large warning message is displayed if this option is enabled,
>> because unhashed addresses, while useful for debugging, exposes
>> kernel addresses which can be a security risk.

> Linus has expressly said "no" to things like this in the past:
> https://lore.kernel.org/lkml/CA+55aFwieC1-nAs+NFq9RTwaR8ef9hWa4MjNBWL41F-8wM49eA@mail.gmail.com/
Maybe I misunderstood, but I thought this is what Vlastimil, Petr, 
Sergey, John, and Steven asked for.