From: Denis Efremov <efremov@linux.com>
To: Julia Lawall <julia.lawall@inria.fr>
Cc: cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org
Subject: Re: [Cocci] [PATCH v3] coccinelle: api: add kzfree script
Date: Thu, 18 Jun 2020 00:42:33 +0300 [thread overview]
Message-ID: <aa7613e9-8152-0022-6d67-0706ce5983d0@linux.com> (raw)
In-Reply-To: <alpine.DEB.2.22.394.2006172241551.3083@hadrien>
>> +@rp_memset depends on patch@
>> +expression E, size;
>> +position p : script:python() { relevant(p) };
>> +type T;
>> +@@
>> +
>> +- memset((T)E, size)@p;
>
> This is missing a 0 argument.
>
Thanks, I will send v4.
>
>
>> + ... when != E
>> + when strict
>> +(
>> +- kfree(E);
>> ++ kzfree(E);
>> +|
>> +- \(vfree\|kvfree\)(E);
>> ++ kvfree_sensitive(E, size);
>> +)
>
> I'm not sure why you want kzfree in the first case, but kvfree_sensitive
> in the second case.
>
As for now in kernel:
memset(E,0,...) && kfree(E) is kzfree()
There are no vzfree or kvzfree functions.
Thus, we use kvfree_sensitive().
Maybe it's worth to wait for this patchset:
https://lkml.org/lkml/2020/6/16/1163
With it the rule will use:
(
- kfree(E);
+ kfree_sensitive(E);
|
- \(vfree\|kvfree\)(E);
+ kvfree_sensitive(E, size);
)
Thanks,
Denis
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next prev parent reply other threads:[~2020-06-17 21:42 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-04 14:08 [Cocci] [PATCH] coccinelle: api: add kzfree script Denis Efremov
2020-06-04 14:15 ` Julia Lawall
2020-06-04 15:39 ` Denis Efremov
2020-06-04 15:51 ` Julia Lawall
2020-06-04 17:22 ` Denis Efremov
2020-06-04 17:28 ` Julia Lawall
2020-06-04 16:27 ` Joe Perches
2020-06-04 17:30 ` Denis Efremov
2020-06-04 17:36 ` Joe Perches
2020-06-14 19:42 ` Denis Efremov
2020-06-14 20:01 ` Joe Perches
2020-06-15 12:03 ` Dan Carpenter
2020-06-15 13:51 ` Denis Efremov
2020-06-04 20:48 ` [Cocci] [PATCH v2] " Denis Efremov
2020-06-04 20:57 ` Julia Lawall
2020-06-04 21:03 ` Denis Efremov
2020-06-04 21:25 ` Denis Efremov
2020-06-06 8:16 ` Julia Lawall
2020-06-14 21:54 ` [Cocci] [PATCH v3] " Denis Efremov
2020-06-17 20:42 ` Julia Lawall
2020-06-17 21:42 ` Denis Efremov [this message]
2020-07-07 21:35 ` Julia Lawall
2020-07-17 11:57 ` [Cocci] [PATCH v4] " Denis Efremov
2020-07-17 20:39 ` Julia Lawall
2020-08-10 23:45 ` Eric Biggers
2020-08-11 7:12 ` Denis Efremov
2020-08-11 7:49 ` [Cocci] [PATCH] coccinelle: api: update kzfree script to kfree_sensitive Denis Efremov
2020-08-26 8:12 ` Denis Efremov
2020-09-12 15:08 ` Julia Lawall
2020-06-15 13:26 [Cocci] [PATCH v3] coccinelle: api: add kzfree script Markus Elfring
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