Messages in this thread | | | Date | Mon, 15 Jun 2020 15:03:32 +0300 | From | Dan Carpenter <> | Subject | Re: [PATCH] coccinelle: api: add kzfree script |
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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
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