[RFC][PATCH 00/13] Provide saturating helpers for allocation

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To: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Subject: [RFC][PATCH 00/13] Provide saturating helpers for allocation
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Tue, 8 May 2018 17:42:16 -0700
Cc: Kees Cook <keescook@xxxxxxxxxxxx>, Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, kernel-hardening@xxxxxxxxxxxxxxxxxx

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

Follow-Ups:
- Re: [RFC][PATCH 00/13] Provide saturating helpers for allocation
  - From: Laura Abbott
- [PATCH 13/13] treewide: Use array_size() for devm_*alloc()-like, leftovers
  - From: Kees Cook
- [PATCH 12/13] treewide: Use array_size() for devm_*alloc()-like
  - From: Kees Cook
- [PATCH 09/13] treewide: Use array_size() for kmalloc()-family
  - From: Kees Cook
- [PATCH 10/13] treewide: Use array_size() for kmalloc()-family, leftovers
  - From: Kees Cook
- [PATCH 11/13] treewide: Use array_size() for vmalloc()
  - From: Kees Cook
- [PATCH 06/13] treewide: Use struct_size() for kmalloc()-family
  - From: Kees Cook
- [PATCH 08/13] treewide: Use struct_size() for devm_kmalloc() and friends
  - From: Kees Cook
- [PATCH 07/13] treewide: Use struct_size() for vmalloc()-family
  - From: Kees Cook
- [PATCH 05/13] mm: Use array_size() helpers for kvmalloc()
  - From: Kees Cook
- [PATCH 01/13] compiler.h: enable builtin overflow checkers and add fallback code
  - From: Kees Cook
- [PATCH 03/13] overflow.h: Add allocation size calculation helpers
  - From: Kees Cook
- [PATCH 02/13] lib: add runtime test of check_*_overflow functions
  - From: Kees Cook
- [PATCH 04/13] mm: Use array_size() helpers for kmalloc()
  - From: Kees Cook

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