linux-kernel - Re: [tip: objtool/core] objtool: Add CONFIG_OBJTOOL

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Message-ID: <Z9vXIppk-QQVo7YX@gmail.com>
Date: Thu, 20 Mar 2025 09:51:46 +0100
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org, Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>,
	"Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: Re: [tip: objtool/core] objtool: Add CONFIG_OBJTOOL_WERROR


* Ingo Molnar <mingo@...nel.org> wrote:

> 
> * Ingo Molnar <mingo@...nel.org> wrote:
> 
> > 
> > My randconfig build tests found this failure of 36 warnings upgraded to 
> > a build failure:
> > 
> >    vmlinux.o: error: objtool: 36 warning(s) upgraded to errors
> > 
> > One thing that stands out in the config is:
> > 
> >   # CONFIG_BUG is not set
> 
> Here's a different build failure, with CONFIG_BUG set:
> 
>   vmlinux.o: error: objtool: 39 warning(s) upgraded to errors

Here's another one (this one with CONFIG_BUG=y too):

  vmlinux.o: error: objtool: 45 warning(s) upgraded to errors

config attached. There's probably some overlap between the root causes 
of the 3 configs I sent so far.

Thanks,

	Ingo

View attachment "config" of type "text/plain" (179518 bytes)