linux-hardening - Re: [PATCH] printk: ringbuffer: Fix truncating buffer size min

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Message-ID: <2b358118-e7b9-1f6d-aa38-306f537a5d93@igalia.com>
Date:   Fri, 11 Aug 2023 10:29:37 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     Kees Cook <keescook@...omium.org>, Petr Mladek <pmladek@...e.com>,
        Vijay Balakrishna <vijayb@...ux.microsoft.com>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>,
        stable@...r.kernel.org, Tony Luck <tony.luck@...el.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] printk: ringbuffer: Fix truncating buffer size min_t cast

Great finding! Thanks a lot for the report and the fix - oneliners are
usually the most challenging to debug.

Tested it in the Steam Deck, and it works perfectly - I saw eventually
one line or two filled with NULLs, now they're gone.
Feel free to add:

Tested-by: Guilherme G. Piccoli <gpiccoli@...lia.com> # Steam Deck