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

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Message-ID: <6s6qhiuj4ugebglftopde6xm364cxmcni4pexnnx5kojz5qnss@vprcgqepaict>
Date: Mon, 17 Mar 2025 17:27:32 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: tip-bot2 for Josh Poimboeuf <tip-bot2@...utronix.de>
Cc: linux-tip-commits@...r.kernel.org, 
	"Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [tip: objtool/core] objtool: Add CONFIG_OBJTOOL_WERROR

On Mon, Mar 17, 2025 at 11:07:23AM +0000, tip-bot2 for Josh Poimboeuf wrote:
> The following commit has been merged into the objtool/core branch of tip:
> 
> Commit-ID:     36799069b48198e5ce92d99310060c4aecb4b3e3
> Gitweb:        https://git.kernel.org/tip/36799069b48198e5ce92d99310060c4aecb4b3e3
> Author:        Josh Poimboeuf <jpoimboe@...nel.org>
> AuthorDate:    Fri, 14 Mar 2025 12:29:11 -07:00
> Committer:     Peter Zijlstra <peterz@...radead.org>
> CommitterDate: Mon, 17 Mar 2025 11:51:44 +01:00
> 
> objtool: Add CONFIG_OBJTOOL_WERROR
> 
> Objtool warnings can be indicative of crashes, broken live patching, or
> even boot failures.  Ignoring them is not recommended.
> 
> Add CONFIG_OBJTOOL_WERROR to upgrade objtool warnings to errors by
> enabling the objtool --Werror option.  Also set --backtrace to print the
> branches leading up to the warning, which can help considerably when
> debugging certain warnings.
> 
> To avoid breaking bots too badly for now, make it the default for real
> world builds only (!COMPILE_TEST).

This last paragraph is no longer accurate, looks like it was changed to
be off by default.

-- 
Josh