From: David Rientjes <rientjes@google.com>
To: David Howells <dhowells@redhat.com>
Cc: Waiman Long <longman@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
linux-mm@kvack.org, keyrings@vger.kernel.org,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH] mm: Add kvfree_sensitive() for freeing sensitive data objects
Date: Mon, 6 Apr 2020 16:20:12 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.2004061618580.45667@chino.kir.corp.google.com> (raw)
In-Reply-To: <6504.1586159053@warthog.procyon.org.uk>
On Mon, 6 Apr 2020, David Howells wrote:
> David Rientjes <rientjes@google.com> wrote:
>
> > > +static inline void kvfree_sensitive(const void *addr, size_t len)
> > > +{
> > > + if (addr) {
> >
> > Shouldn't this be if (unlikely(ZERO_OR_NULL_PTR(addr))?
>
> You've reversed the logic - it needs a '!' there.
>
Ah lol, yeah. Probably just better to do
if (unlikely(ZERO_OR_NULL_PTR(addr)))
return;
but I agree that mm.h is likely not the right spot.
next prev parent reply other threads:[~2020-04-06 23:20 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 2:37 [PATCH] mm: Add kvfree_sensitive() for freeing sensitive data objects Waiman Long
2020-04-06 4:20 ` David Rientjes
2020-04-06 14:36 ` Waiman Long
2020-04-06 14:39 ` Matthew Wilcox
2020-04-06 7:44 ` David Howells
2020-04-06 23:20 ` David Rientjes [this message]
2020-04-06 14:32 ` David Howells
2020-04-06 14:40 ` Waiman Long
2020-04-06 15:45 ` Joe Perches
2020-04-06 16:00 ` David Howells
2020-04-06 16:10 ` Joe Perches
2020-04-06 16:41 ` Linus Torvalds
2020-04-06 16:42 ` Joe Perches
2020-04-06 17:11 ` Linus Torvalds
2020-04-06 17:20 ` Joe Perches
2020-04-06 17:26 ` Matthew Wilcox
2020-04-06 17:33 ` Linus Torvalds
2020-04-06 17:46 ` Joe Perches
2020-04-06 17:58 ` Waiman Long
2020-04-06 18:06 ` Linus Torvalds
2020-04-06 18:46 ` Joe Perches
2020-04-06 16:26 ` David Howells
2020-04-06 16:38 ` Joe Perches
2020-04-06 17:10 ` Joe Perches
2020-04-06 17:24 ` Matthew Wilcox
2020-04-06 17:26 ` Linus Torvalds
2020-04-06 17:51 ` David Howells
2020-04-06 17:58 ` Linus Torvalds
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