linux-hardening - Re: [PATCH] lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER

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Message-Id: <174473295259.3417974.16266823568790250610.b4-ty@kernel.org>
Date: Tue, 15 Apr 2025 09:02:34 -0700
From: Kees Cook <kees@...nel.org>
To: Nathan Chancellor <nathan@...nel.org>
Cc: Kees Cook <kees@...nel.org>,
	Marco Elver <elver@...gle.com>,
	Andrey Konovalov <andreyknvl@...il.com>,
	Andrey Ryabinin <ryabinin.a.a@...il.com>,
	Justin Stitt <justinstitt@...gle.com>,
	linux-kernel@...r.kernel.org,
	kasan-dev@...glegroups.com,
	linux-hardening@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP

On Mon, 14 Apr 2025 15:00:59 -0700, Nathan Chancellor wrote:
> CONFIG_UBSAN_INTEGER_WRAP is 'default UBSAN', which is problematic for a
> couple of reasons.
> 
> The first is that this sanitizer is under active development on the
> compiler side to come up with a solution that is maintainable on the
> compiler side and usable on the kernel side. As a result of this, there
> are many warnings when the sanitizer is enabled that have no clear path
> to resolution yet but users may see them and report them in the meantime.
> 
> [...]

Applied to for-linus/hardening, thanks!

[1/1] lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP
      https://git.kernel.org/kees/c/dcf165123e7f

Take care,

-- 
Kees Cook