From: SF Markus Elfring <elfring@users.sourceforge.net>
To: Julia Lawall <julia.lawall@lip6.fr>,
"linux-integrity@vger.kernel.org"
<linux-integrity@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Cc: "David Laight" <David.Laight@ACULAB.COM>,
"Joe Perches" <joe@perches.com>,
"Jason Gunthorpe" <jgunthorpe@obsidianresearch.com>,
"kernel-janitors@vger.kernel.org"
<kernel-janitors@vger.kernel.org>,
"Stefan Berger" <stefanb@linux.vnet.ibm.com>,
"Alexander Steffen" <Alexander.Steffen@infineon.com>,
"Nayna Jain" <nayna@linux.vnet.ibm.com>,
"Jerry Snitselaar" <jsnitsel@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Jarkko Sakkinen" <jarkko.sakkinen@linux.intel.com>,
"James Bottomley" <James.Bottomley@HansenPartnership.com>,
"Corentin Labbe" <clabbe.montjoie@gmail.com>,
"Kenneth Goldman" <kgold@linux.vnet.ibm.com>,
"Paul Mackerras" <paulus@samba.org>,
"Peter Hüwe" <PeterHuewe@gmx.de>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Dan Carpenter" <dan.carpenter@oracle.com>
Subject: Re: Adjusting further size determinations?
Date: Wed, 18 Oct 2017 15:50:04 +0200 [thread overview]
Message-ID: <d9315154-ce60-2cdb-eb27-ac7e89916f30@users.sourceforge.net> (raw)
In-Reply-To: <alpine.DEB.2.20.1710181531130.15834@hadrien>
>> If you want 'security' for kmalloc() then:
>>
>> #define KMALLOC_TYPE(flags) (type *)kmalloc(sizeof (type), flags)
>> #define KMALLOC(ptr, flags) *(ptr) = KMALLOC_TYPE(typeof *(ptr), flags)
Such an approach might help.
>> and change:
>> ptr = kmalloc(sizeof *ptr, flags);
>> to:
>> KMALLOC(&ptr, flags);
>>
>> But it is all churn for churn's sake.
>
> Please don't.
Interesting …
> Coccinelle won't find real problems with kmalloc any more if this is done.
The corresponding source code analysis will become different
(or more challenging) then. Are you still looking for related solutions?
Regards,
Markus
next prev parent reply other threads:[~2017-10-18 13:50 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-16 17:30 [PATCH 0/4] char-TPM: Adjustments for ten function implementations SF Markus Elfring
2017-10-16 17:31 ` [PATCH 1/4] char/tpm: Delete an error message for a failed memory allocation in tpm_ascii_bios_measurements_show() SF Markus Elfring
2017-10-16 17:32 ` [PATCH 2/4] char/tpm: Delete an error message for a failed memory allocation in tpm_ibmvtpm_probe() SF Markus Elfring
2017-10-16 17:33 ` [PATCH 3/4] char/tpm: Improve a size determination in nine functions SF Markus Elfring
2017-10-17 11:03 ` Andy Shevchenko
2017-10-17 11:50 ` Alexander.Steffen
2017-10-17 12:52 ` Mimi Zohar
2017-10-17 12:58 ` Julia Lawall
2017-10-17 15:17 ` Mimi Zohar
2017-10-17 15:29 ` Julia Lawall
2017-10-18 9:16 ` Alexander.Steffen
2017-10-17 18:41 ` SF Markus Elfring
2017-10-17 19:28 ` Mimi Zohar
2017-10-17 20:04 ` SF Markus Elfring
2017-10-17 19:36 ` Andy Shevchenko
2017-10-17 20:24 ` SF Markus Elfring
2017-10-18 14:57 ` Jarkko Sakkinen
2017-10-18 15:22 ` SF Markus Elfring
2017-10-18 15:59 ` Jarkko Sakkinen
2017-10-18 16:43 ` SF Markus Elfring
2017-10-18 17:18 ` Jarkko Sakkinen
2017-10-18 17:22 ` Jarkko Sakkinen
2017-10-18 17:54 ` SF Markus Elfring
2017-10-18 17:48 ` SF Markus Elfring
2017-10-18 17:54 ` Jerry Snitselaar
2017-10-18 18:11 ` char/tpm: Delete an error message for a failed memory allocation in tpm_…() SF Markus Elfring
2017-10-18 18:03 ` char/tpm: Improve a size determination in nine functions Andy Shevchenko
2017-10-19 12:04 ` Michal Suchánek
2017-10-19 12:16 ` Jarkko Sakkinen
2017-10-17 13:02 ` [PATCH 3/4] " Andy Shevchenko
2017-10-18 14:52 ` Jarkko Sakkinen
2017-10-17 15:22 ` Alexander.Steffen
2017-10-18 14:48 ` Jarkko Sakkinen
2017-10-19 16:58 ` Alexander.Steffen
2017-10-20 9:01 ` Jarkko Sakkinen
2017-10-20 10:23 ` Jarkko Sakkinen
2017-10-20 12:03 ` Alexander.Steffen
2017-10-23 13:20 ` Dan Carpenter
2017-10-18 14:40 ` Jarkko Sakkinen
2017-10-16 17:34 ` [PATCH 4/4] char/tpm: Less checks in tpm_ibmvtpm_probe() after error detection SF Markus Elfring
2017-10-19 11:56 ` Michal Suchánek
2017-10-19 12:36 ` SF Markus Elfring
2017-10-19 12:46 ` Michal Suchánek
2017-10-19 14:26 ` Dan Carpenter
2017-10-19 13:36 ` Dan Carpenter
2017-10-19 14:16 ` Michal Suchánek
2017-10-19 14:59 ` Dan Carpenter
2017-10-19 20:44 ` SF Markus Elfring
2017-10-16 18:31 ` [PATCH 0/4] char-TPM: Adjustments for ten function implementations Jarkko Sakkinen
2017-10-16 18:35 ` Jarkko Sakkinen
2017-10-16 20:44 ` SF Markus Elfring
2017-10-18 15:04 ` Jarkko Sakkinen
2017-10-18 15:43 ` SF Markus Elfring
2017-10-16 22:46 ` [PATCH 0/4] " Joe Perches
2017-10-17 7:20 ` SF Markus Elfring
2017-10-17 8:51 ` Dan Carpenter
2017-10-17 8:56 ` Julia Lawall
2017-10-17 9:44 ` Dan Carpenter
2017-10-17 10:11 ` Julia Lawall
2017-10-17 11:52 ` Mimi Zohar
2017-10-18 3:18 ` Michael Ellerman
2017-10-19 13:16 ` Mimi Zohar
2017-10-19 16:08 ` Circumstances for using the tag “Fixes” (or not) SF Markus Elfring
2017-10-17 12:26 ` [PATCH 0/4] char-TPM: Adjustments for ten function implementations Michael Ellerman
2017-10-18 15:07 ` Jarkko Sakkinen
2017-10-17 9:25 ` SF Markus Elfring
2017-10-17 15:57 ` James Bottomley
2017-10-17 16:32 ` SF Markus Elfring
2017-10-17 22:43 ` Joe Perches
2017-10-18 9:00 ` SF Markus Elfring
2017-10-18 9:18 ` Joe Perches
2017-10-18 9:50 ` Alexander.Steffen
2017-10-18 10:00 ` Julia Lawall
2017-10-18 10:28 ` Joe Perches
2017-10-18 11:00 ` Adjusting further size determinations? SF Markus Elfring
2017-10-18 11:49 ` Joe Perches
2017-10-18 12:07 ` SF Markus Elfring
2017-10-18 12:58 ` David Laight
2017-10-18 13:32 ` Julia Lawall
2017-10-18 13:50 ` SF Markus Elfring [this message]
2017-10-18 10:44 ` char-TPM: Adjustments for ten function implementations Alexander.Steffen
2017-10-18 10:49 ` Joe Perches
2017-10-18 11:07 ` Alexander.Steffen
2017-10-18 9:55 ` SF Markus Elfring
2017-10-18 18:27 ` Michal Suchánek
2017-10-18 15:10 ` [PATCH 0/4] " Jarkko Sakkinen
2017-10-18 16:09 ` James Bottomley
2017-10-18 17:13 ` Jarkko Sakkinen
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