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Date: Wed, 14 Feb 2018 10:47:38 -0800
From: Joe Perches <>
To: Matthew Wilcox <>, Andrew Morton
Cc: Matthew Wilcox <>,, Kees Cook
Subject: Re: [PATCH 0/2] Add kvzalloc_struct to complement kvzalloc_array

On Wed, 2018-02-14 at 10:26 -0800, Matthew Wilcox wrote:
> 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[];
> };

I think expanding the number of allocation functions
is not necessary.

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