linux-hardening - [PATCH v3 0/2] usercopy: Convert test_user

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240612195412.make.760-kees@kernel.org>
Date: Wed, 12 Jun 2024 12:59:17 -0700
From: Kees Cook <kees@...nel.org>
To: Mark Rutland <mark.rutland@....com>
Cc: Kees Cook <kees@...nel.org>,
	Vitor Massaru Iha <vitor@...saru.org>,
	Ivan Orlov <ivan.orlov0322@...il.com>,
	Brendan Higgins <brendan.higgins@...ux.dev>,
	David Gow <davidgow@...gle.com>,
	Rae Moar <rmoar@...gle.com>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	kunit-dev@...glegroups.com,
	linux-hardening@...r.kernel.org
Subject: [PATCH v3 0/2] usercopy: Convert test_user_copy to KUnit test

Hi,

This builds on the proposal[1] from Mark and lets me convert the
existing usercopy selftest to KUnit. Besides adding this basic test to
the KUnit collection, it also opens the door for execve testing (which
depends on having a functional current->mm), and should provide the
basic infrastructure for adding Mark's much more complete usercopy tests.

 v3:
  - use MEMEQ KUnit helper (David)
  - exclude pathological address confusion test for systems with separate
    address spaces, noticed by David
  - add KUnit-conditional exports for alloc_mm() and arch_pick_mmap_layout()
    noticed by 0day
 v2: https://lore.kernel.org/lkml/20240610213055.it.075-kees@kernel.org/
 v1: https://lore.kernel.org/lkml/20240519190422.work.715-kees@kernel.org/

-Kees

[1] https://lore.kernel.org/lkml/20230321122514.1743889-2-mark.rutland@arm.com/

Kees Cook (2):
  kunit: test: Add vm_mmap() allocation resource manager
  usercopy: Convert test_user_copy to KUnit test

 MAINTAINERS                                |   1 +
 include/kunit/test.h                       |  17 ++
 kernel/fork.c                              |   3 +
 lib/Kconfig.debug                          |  21 +-
 lib/Makefile                               |   2 +-
 lib/kunit/Makefile                         |   1 +
 lib/kunit/user_alloc.c                     | 113 +++++++++
 lib/{test_user_copy.c => usercopy_kunit.c} | 282 ++++++++++-----------
 mm/util.c                                  |   3 +
 9 files changed, 288 insertions(+), 155 deletions(-)
 create mode 100644 lib/kunit/user_alloc.c
 rename lib/{test_user_copy.c => usercopy_kunit.c} (46%)

-- 
2.34.1