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Date: Wed, 28 Jun 2023 11:10:19 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Michal Kubecek <mkubecek@...e.cz>
Cc: Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Subject: Re: build failure after commit eb0481bbc4ce ("objtool: Fix
reloc_hash size")
On Wed, Jun 28, 2023 at 07:26:59PM +0200, Michal Kubecek wrote:
> I digged some more and my guess is that the problem is that
> elf_open_read() does
>
> memset(elf, 0, offsetof(struct elf, sections));
>
> but commit eb0481bbc4ce ("objtool: Fix reloc_hash size") added
> num_relocs after sections so that it is not zeroed (0xbabababababababa
> is probably some kind of poison).
Argh, that memset() is subtle as heck. Peter, why?!?
--
Josh
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