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From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Keith Packard <keithp@keithp.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	clang-built-linux@googlegroups.com,
	linux-hardening@vger.kernel.org
Subject: [PATCH v2 0/5] Enable -Warray-bounds and -Wzero-length-bounds
Date: Wed, 25 Aug 2021 22:04:53 -0700	[thread overview]
Message-ID: <20210826050458.1540622-1-keescook@chromium.org> (raw)

v2:
- rename flex array helper
- split flex array helper arguments to be more DECLARE_*-like
- added knowledge of flex array helper to kernel-doc
- added reviews
v1: https://lore.kernel.org/lkml/20210818081118.1667663-1-keescook@chromium.org/

Hi,

In support of the improved buffer overflow detection for memcpy(),
this enables -Warray-bounds and -Wzero-length-bounds globally. Mostly
it involves some struct member tricks with the new DECLARE_FLEX_ARRAY()
macro. Everything else is just replacing stacked 0-element arrays
with actual unions in two related treewide patches. There is one set of
special cases that were fixed separately[1] and are needed as well.

I'm expecting to carry this series with the memcpy() series in my
"overflow" tree. Reviews appreciated! :)

Thanks!

-Kees

[1] https://lore.kernel.org/lkml/20210818043035.1308062-1-keescook@chromium.org/

Kees Cook (5):
  stddef: Add flexible array union helper
  treewide: Replace open-coded flex arrays in unions
  treewide: Replace 0-element memcpy() destinations with flexible arrays
  Makefile: Enable -Warray-bounds
  Makefile: Enable -Wzero-length-bounds

 Makefile                                      |  2 --
 drivers/crypto/chelsio/chcr_crypto.h          | 14 +++++----
 drivers/net/can/usb/etas_es58x/es581_4.h      |  2 +-
 drivers/net/can/usb/etas_es58x/es58x_fd.h     |  2 +-
 drivers/net/wireless/ath/ath10k/bmi.h         | 10 +++----
 drivers/net/wireless/ath/ath10k/htt.h         |  7 +++--
 .../net/wireless/intel/iwlegacy/commands.h    |  6 ++--
 .../net/wireless/intel/iwlwifi/dvm/commands.h |  6 ++--
 .../net/wireless/intel/iwlwifi/fw/api/tx.h    |  6 ++--
 drivers/scsi/aic94xx/aic94xx_sds.c            |  6 ++--
 drivers/scsi/qla4xxx/ql4_def.h                |  4 +--
 drivers/staging/rtl8188eu/include/ieee80211.h |  6 ++--
 drivers/staging/rtl8712/ieee80211.h           |  4 +--
 drivers/staging/rtl8723bs/include/ieee80211.h |  6 ++--
 fs/hpfs/hpfs.h                                |  8 ++---
 include/linux/filter.h                        |  6 ++--
 include/linux/ieee80211.h                     | 30 +++++++++----------
 include/linux/stddef.h                        | 13 ++++++++
 include/scsi/sas.h                            | 12 +++++---
 include/uapi/linux/dlm_device.h               |  4 +--
 include/uapi/linux/stddef.h                   | 16 ++++++++++
 include/uapi/rdma/rdma_user_rxe.h             |  4 +--
 include/uapi/sound/asoc.h                     |  4 +--
 scripts/kernel-doc                            |  2 ++
 24 files changed, 115 insertions(+), 65 deletions(-)

-- 
2.30.2


             reply	other threads:[~2021-08-26  5:05 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-26  5:04 Kees Cook [this message]
2021-08-26  5:04 ` [PATCH v2 1/5] stddef: Add flexible array union helper Kees Cook
2021-08-26  5:04 ` [PATCH v2 2/5] treewide: Replace open-coded flex arrays in unions Kees Cook
2021-08-26  6:24   ` Marc Kleine-Budde
2021-08-27 16:08     ` Kees Cook
2021-08-27 17:08       ` Marc Kleine-Budde
2021-08-27 16:17     ` Kees Cook
2021-08-28  7:31       ` Vincent MAILHOL
2021-08-26  7:36   ` Vincent MAILHOL
2021-08-26 15:39     ` Kees Cook
2021-08-26  5:04 ` [PATCH v2 3/5] treewide: Replace 0-element memcpy() destinations with flexible arrays Kees Cook
2021-08-26  5:24   ` Keith Packard
2021-08-26  5:51     ` Kees Cook
2021-08-26  5:04 ` [PATCH v2 4/5] Makefile: Enable -Warray-bounds Kees Cook
2021-08-26  5:04 ` [PATCH v2 5/5] Makefile: Enable -Wzero-length-bounds Kees Cook
2021-08-27  9:25 ` [PATCH v2 1/5] stddef: Add flexible array union helper Vincent Mailhol
2021-08-27 15:39   ` Kees Cook

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