linux-kernel - Re: faddr2line issue

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Date:   Thu, 14 Jul 2022 09:41:36 -0700
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     John Garry <john.garry@...wei.com>
Cc:     keescook@...omium.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: faddr2line issue

On Thu, Jul 14, 2022 at 10:57:51AM +0100, John Garry wrote:
> On 08/07/2022 15:47, John Garry wrote:
> 
> +
> 
> JFYI, This issue is caused by CONFIG_DEBUG_INFO now being default off in my
> .config from commit f9b3cd245784 ("Kconfig.debug: make DEBUG_INFO selectable
> from a choice").
> 
> By enabling that config faddr2line now looks ok again.
> 
> BTW, Could we add a check for any kernel dependency in this tool?

Hi John,

The script doesn't know how to reliably find the .config file, but it
should be able to check for missing DWARF in the binary itself.

-- 
Josh