linux-kernel - Re: Linux-6.17 meets gcc trunk

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Message-ID: <202509300859.BF057653FA@keescook>
Date: Tue, 30 Sep 2025 09:06:40 -0700
From: Kees Cook <kees@...nel.org>
To: David Binderman <dcb314@...mail.com>
Cc: "linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Linux-6.17 meets gcc trunk

On Tue, Sep 30, 2025 at 08:08:27AM +0000, David Binderman wrote:
> Hello there,
> 
> I just tried to compile linux-6.17 with gcc trunk. It said:
> 
>   HDRINST usr/include/asm/types.h
> In file included from scripts/gcc-plugins/latent_entropy_plugin.c:78:
> scripts/gcc-plugins/gcc-common.h:176:25: error: ‘TODO_verify_il’ was not declared in this scope; did you mean ‘TODO_verify_flow’?
>   176 | #define TODO_verify_ssa TODO_verify_il
>       |                         ^~~~~~~~~~~~~~
> scripts/gcc-plugins/latent_entropy_plugin.c:567:27: note: in expansion of macro ‘TODO_verify_ssa’
>   567 | #define TODO_FLAGS_FINISH TODO_verify_ssa | TODO_verify_stmts | TODO_dump_func \
>       |                           ^~~~~~~~~~~~~~~
> scripts/gcc-plugins/gcc-generate-gimple-pass.h:86:43: note: in expansion of macro ‘TODO_FLAGS_FINISH’
>    86 |                 .todo_flags_finish      = TODO_FLAGS_FINISH,

This was fixed here:
https://git.kernel.org/linus/a40282dd3c484e6c882e93f4680e0a3ef3814453

It will need backporting to prior kernel releases.

-Kees

-- 
Kees Cook