linux-kernel - kexec breaks with 5.4 due to memzero

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Message-ID: <20191007030939.GB5270@rani.riverdale.lan>
Date:   Sun, 6 Oct 2019 23:09:39 -0400
From:   Arvind Sankar <nivedita@...m.mit.edu>
To:     linux-kernel@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Ingo Molnar <mingo@...nel.org>, x86@...nel.org
Subject: kexec breaks with 5.4 due to memzero_explicit

Hi, arch/x86/purgatory/purgatory.ro has an undefined symbol
memzero_explicit. This has come from commit 906a4bb97f5d ("crypto:
sha256 - Use get/put_unaligned_be32 to get input, memzero_explicit")
according to git bisect.

The patch mentions that it impacts purgatory code, but I don't see any
changes to actually include the definition of memzero_explicit into
purgatory? It used to get memset from arch/x86/boot/compressed/string.c
I think.