Messages in this thread | | | Subject | Re: [RFC][PATCH 00/13] Provide saturating helpers for allocation | From | Laura Abbott <> | Date | Wed, 9 May 2018 09:08:24 -0700 |
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On 05/08/2018 05:42 PM, Kees Cook wrote: > This is a stab at providing three new helpers for allocation size > calculation: > > struct_size(), array_size(), and array3_size(). > > These are implemented on top of Rasmus's overflow checking functions, > and the last 8 patches are all treewide conversions of open-coded > multiplications into the various combinations of the helper functions. > > -Kees > > Obvious question (that might indicate this deserves documentation?)
What's the difference between
kmalloc_array(cnt, sizeof(struct blah), GFP_KERNEL);
and
kmalloc(array_size(cnt, struct blah), GFP_KERNEL);
and when would you use one over the other?
Thanks, Laura
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