Re: [PATCH] kernel: use kcalloc instead kmalloc/memset

From: Arjan van de Ven
Date: Fri Aug 05 2005 - 05:18:06 EST


On Fri, 2005-08-05 at 12:07 +0200, Roman Zippel wrote:
> Hi,
>
> On Fri, 5 Aug 2005, Arjan van de Ven wrote:
>
> > kcalloc does have value, in that it's a nice api to avoid multiplication
> > overflows. Just for "1" it's indeed not the most useful API.
>
> This would imply a similiar kmalloc() would be useful as well.
> Second, how relevant is it for the kernel?

we've had a non-negliable amount of security holes because of this

> Is that really the best place
> to check for rogue user parameters?

it makes it easy and safe. Of course you can and should check it in all
users. Just that using a safer API is generally better than forcing
everyone to do it themselves.

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