lkml.org 
[lkml]   [2020]   [Apr]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] mm: Add kvfree_sensitive() for freeing sensitive data objects
On Mon, Apr 06, 2020 at 10:10:20AM -0700, Joe Perches wrote:
> On Mon, 2020-04-06 at 17:26 +0100, David Howells wrote:
> > Joe Perches <joe@perches.com> wrote:
> >
> > > While I agree with Linus about the __ prefix,
> > > the z is pretty common and symmetric to all
> > > the <foo>zalloc uses.
> > >
> > > And if _sensitive is actually used, it'd be
> > > good to do a s/kzfree/kfree_sensitive/ one day
> > > sooner than later.
> >
> > How much overhead would it be to always use kvfree_sensitive() and never have
> > a kfree_sensitive()?
>
> Another possibility:
>
> Add yet another alloc flag like __GFP_SENSITIVE
> and have kfree operate on that and not have a
> kfree_sensitive at all.

kfree() doesn't take GFP flags.

\
 
 \ /
  Last update: 2020-04-06 19:25    [W:0.081 / U:0.780 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site