Re: [PATCH] coccinelle: api: add kzfree script

[Dan Carpenter]

On Sun, Jun 14, 2020 at 10:42:54PM +0300, Denis Efremov wrote:
> On 6/4/20 7:27 PM, Joe Perches wrote:
> > On Thu, 2020-06-04 at 17:08 +0300, Denis Efremov wrote:
> >> Check for memset() with 0 followed by kfree().
> > 
> > Perhaps those uses should be memzero_explicit or kvfree_sensitive.
> > 
> 
> Is it safe to suggest to use kzfree instead of memzero_explicit && kfree?
> Or it would be better to use kvfree_sensitive in this case.
> 
> kzfree uses memset(0) with no barrier_data.

Yeah.  That seems buggy.  It should have a barrier.  Also I thought I
saw somewhere that Linus doesn't like the name and so that's why we have
the _sensitive() name?

regards,
dan carpenter