From: Matthew Wilcox <>

We all know the perils of multiplying a value provided from userspace
by a constant and then allocating the resulting number of bytes.  That's
why we have kvmalloc_array(), so we don't have to think about it.
This solves the same problem when we embed one of these arrays in a
struct like this:

struct {
        int n;
        unsigned long array[];

Using kvzalloc_struct() to allocate this will save precious thinking
time and reduce the possibilities of bugs.

Matthew Wilcox (2):
  mm: Add kernel-doc for kvfree
  mm: Add kvmalloc_ab_c and kvzalloc_struct

 include/linux/mm.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 mm/util.c          | 10 ++++++++++
 2 files changed, 61 insertions(+)


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