linux-kernel - Re: [PATCH] gcc-plugins: Remove SANCOV plugin

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Message-Id: <6f7e3436-8ae8-473d-be64-c962366ca5c8@app.fastmail.com>
Date: Wed, 09 Apr 2025 21:28:22 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Kees Cook" <kees@...nel.org>
Cc: "Andrew Morton" <akpm@...ux-foundation.org>,
 "Masahiro Yamada" <masahiroy@...nel.org>,
 "Nathan Chancellor" <nathan@...nel.org>,
 "Nicolas Schier" <nicolas@...sle.eu>, "Dmitry Vyukov" <dvyukov@...gle.com>,
 "Andrey Konovalov" <andreyknvl@...il.com>, linux-kbuild@...r.kernel.org,
 linux-hardening@...r.kernel.org, kasan-dev@...glegroups.com,
 "Bill Wendling" <morbo@...gle.com>, "Justin Stitt" <justinstitt@...gle.com>,
 linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] gcc-plugins: Remove SANCOV plugin

On Wed, Apr 9, 2025, at 18:19, Kees Cook wrote:
> On Wed, Apr 09, 2025 at 06:16:58PM +0200, Arnd Bergmann wrote:
>> On Wed, Apr 9, 2025, at 18:02, Kees Cook wrote:
>> 
>> >  config KCOV
>> >  	bool "Code coverage for fuzzing"
>> >  	depends on ARCH_HAS_KCOV
>> > -	depends on CC_HAS_SANCOV_TRACE_PC || GCC_PLUGINS
>> > +	depends on CC_HAS_SANCOV_TRACE_PC
>> 
>> So this dependency would also disappear. I think either way is fine.
>> 
>> The rest of the patch is again identical to my version.
>
> Ah! How about you keep the patch as part of your gcc-8.1 clean up, then?
> That seems more clear, etc.

Sure, I can probably keep that all in a branch of the asm-generic
tree, or alternatively send it through the kbuild tree.

Shall I include the patch to remove the structleak plugin as well?

       Arnd