netdev - Re: [PATCH v2 2/2] crypto: Remove unnecessary memzero

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Message-ID: <2a58f592879cf67b4c6b8e859ce87e1f9652902a.camel@perches.com>
Date:   Tue, 14 Apr 2020 12:44:49 -0700
From:   Joe Perches <joe@...ches.com>
To:     Waiman Long <longman@...hat.com>,
        Michal Suchánek <msuchanek@...e.de>
Cc:     Christophe Leroy <christophe.leroy@....fr>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Howells <dhowells@...hat.com>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
        keyrings@...r.kernel.org, linux-kernel@...r.kernel.org,
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Subject: Re: [PATCH v2 2/2] crypto: Remove unnecessary memzero_explicit()

On Tue, 2020-04-14 at 15:37 -0400, Waiman Long wrote:
> OK, I can change it to clear the key length when the allocation failed
> which isn't likely.


Perhaps:

	kfree_sensitive(op->key);
	op->key = NULL;
	op->keylen = 0;

but I don't know that it impacts any possible state.