linux-kernel - Re: [RFC][PATCH 2/3] objtool: Find relocation base section using sh

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Message-ID: <20200528140916.6crguzfpehf6lext@treble>
Date:   Thu, 28 May 2020 09:09:16 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Matt Helsley <mhelsley@...are.com>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC][PATCH 2/3] objtool: Find relocation base section using
 sh_info

On Wed, May 27, 2020 at 09:42:32AM -0700, Matt Helsley wrote:
> Currently objtool uses a naming heuristic to find the "base"
> section to apply the relocation(s) to. The standard defines
> the SHF_INFO_LINK flag (SHF => in the section header flags)
> which indicates when the section header's sh_info field can
> be used to find the necessary section.
> 
> Warns when the heuristic is used as a fallback and changes
> the name heuristic calculation to handle rela (explicit
> addend) and now rel (implicit addend) relocations.

Does this fallback case actually happen?

-- 
Josh