linux-kernel - Re: [PATCH] tty: vt: saturate scrollback

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Message-ID: <2024051039-bankable-liking-e836@gregkh>
Date: Fri, 10 May 2024 11:40:33 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Justin Stitt <justinstitt@...gle.com>
Cc: Jiri Slaby <jirislaby@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Bill Wendling <morbo@...gle.com>, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] tty: vt: saturate scrollback_delta to avoid overflow

On Mon, May 06, 2024 at 06:55:19PM +0000, Justin Stitt wrote:
> Using the signed overflow sanitizer with syzkaller produces this UBSAN
> report:

<snip>

I think you might want to hold off on these until the discussion on the
hardening list about overflows all settles down to a solid resolution.
Right now these all seem to be a mess and perhaps you will have a better
set of primitives to work with once that thread is finished.

thanks,

greg k-h