linux-hardening - [PATCH 00/10] Annotate arguments of memtostr/strtomem with _

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Message-Id: <20250207005832.work.324-kees@kernel.org>
Date: Thu,  6 Feb 2025 17:00:09 -0800
From: Kees Cook <kees@...nel.org>
To: Andy Shevchenko <andy@...nel.org>
Cc: Kees Cook <kees@...nel.org>,
	Sathya Prakash <sathya.prakash@...adcom.com>,
	Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
	Suganath Prabu Subramani <suganath-prabu.subramani@...adcom.com>,
	Kashyap Desai <kashyap.desai@...adcom.com>,
	Sumit Saxena <sumit.saxena@...adcom.com>,
	"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Nilesh Javali <njavali@...vell.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Sven Eckelmann <sven@...fation.org>,
	Tadeusz Struk <tadeusz.struk@...aro.org>,
	kernel test robot <lkp@...el.com>,
	Erick Archer <erick.archer@...look.com>,
	Dmitry Antipov <dmantipov@...dex.ru>,
	Ryusuke Konishi <konishi.ryusuke@...il.com>,
	Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
	linux-kernel@...r.kernel.org,
	MPT-FusionLinux.pdl@...adcom.com,
	linux-scsi@...r.kernel.org,
	mpi3mr-linuxdrv.pdl@...adcom.com,
	GR-QLogic-Storage-Upstream@...vell.com,
	linux-hardening@...r.kernel.org,
	x86@...nel.org,
	linux-coco@...ts.linux.dev,
	linux-nilfs@...r.kernel.org
Subject: [PATCH 00/10] Annotate arguments of memtostr/strtomem with __nonstring

Hi,

The memtostr*() and strtomem*() helpers are designed to move between C
strings (NUL-terminated) and byte arrays (that may just be zero padded and
may not be NUL-terminated). The "nonstring" attribute is used to annotated
these kinds of byte arrays, and we can validate the annotation on the
arguments of the helpers. Add the the infrastructure to do this, and
then update all the places where these annotations are currently missing.

-Kees

Kees Cook (10):
  scsi: mptfusion: Mark device strings as nonstring
  scsi: mpi3mr: Mark device strings as nonstring
  scsi: mpt3sas: Mark device strings as nonstring
  scsi: qla2xxx: Mark device strings as nonstring
  string: kunit: Mark nonstring test strings as __nonstring
  x86/tdx: Mark message.str as nonstring
  uapi: stddef.h: Introduce __kernel_nonstring
  nilfs2: Mark on-disk strings as nonstring
  compiler.h: Introduce __must_be_noncstr()
  string.h: Validate memtostr*()/strtomem*() arguments more carefully

 arch/x86/coco/tdx/tdx.c                  |  2 +-
 drivers/message/fusion/mptsas.c          |  8 ++++----
 drivers/scsi/mpi3mr/mpi3mr_transport.c   |  8 ++++----
 drivers/scsi/mpt3sas/mpi/mpi2_cnfg.h     |  2 +-
 drivers/scsi/mpt3sas/mpt3sas_transport.c |  8 ++++----
 drivers/scsi/qla2xxx/qla_mr.h            |  4 ++--
 include/linux/compiler.h                 | 18 +++++++++++++++++-
 include/linux/string.h                   | 16 ++++++++++++----
 include/uapi/linux/nilfs2_ondisk.h       |  3 ++-
 include/uapi/linux/stddef.h              |  6 ++++++
 lib/string_kunit.c                       |  4 ++--
 11 files changed, 55 insertions(+), 24 deletions(-)

-- 
2.34.1