linux-kernel - Re: [PATCH 3/5] KEYS: encrypted: sanitize all key material

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Message-ID: <28151.1493043294@warthog.procyon.org.uk>
Date:   Mon, 24 Apr 2017 15:14:54 +0100
From:   David Howells <dhowells@...hat.com>
To:     Eric Biggers <ebiggers3@...il.com>
Cc:     dhowells@...hat.com, keyrings@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, Eric Biggers <ebiggers@...gle.com>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        David Safford <safford@...ibm.com>
Subject: Re: [PATCH 3/5] KEYS: encrypted: sanitize all key material

Eric Biggers <ebiggers3@...il.com> wrote:

> It's not actually needed because it's impossible for the compiler to optimize
> away the memset().  memzero_explicit() is only needed on stack data.

Okay, also reasonable.

David