Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Wed, 14 Feb 2018 10:26:16 -0800
From: Matthew Wilcox <>
To: Andrew Morton <>
Cc: Matthew Wilcox <>,,
	Kees Cook <>,,
Subject: [PATCH 0/2] Add kvzalloc_struct to complement kvzalloc_array

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(+)


Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.