linux-kernel - Re: [PATCH 09/18] objtool: Add stack validation cmdline option

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Message-ID: <YlferZa7SP6hVgcA@hirez.programming.kicks-ass.net>
Date:   Thu, 14 Apr 2022 10:43:25 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Miroslav Benes <mbenes@...e.cz>
Subject: Re: [PATCH 09/18] objtool: Add stack validation cmdline option

On Wed, Apr 13, 2022 at 04:19:44PM -0700, Josh Poimboeuf wrote:
> +	if (opts.stackval || opts.orc || opts.uaccess) {
> +		ret = validate_functions(file);
> +		if (ret < 0)
> +			goto out;
> +		warnings += ret;
>  
> +		ret = validate_unwind_hints(file, NULL);
>  		if (ret < 0)
>  			goto out;
>  		warnings += ret;
> +
> +		if (!warnings) {
> +			ret = validate_reachable_instructions(file);
> +			if (ret < 0)
> +				goto out;
> +			warnings += ret;
> +		}
>  	}

Doesn't SLS also depend on validate_functions() ?