linux-kernel - [GIT PULL] hardening fixes for v5.18-rc1

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Date:   Thu, 31 Mar 2022 11:35:40 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        David Hildenbrand <david@...hat.com>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org,
        Logan Gunthorpe <logang@...tatee.com>,
        Martin Oliveira <martin.oliveira@...eticom.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Minchan Kim <minchan@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Zi Yan <ziy@...dia.com>
Subject: [GIT PULL] hardening fixes for v5.18-rc1

Hi Linus,

Please pull these hardening fixes for v5.18-rc1. This addresses an
-Warray-bounds warning found under a few ARM defconfigs, and disables
long-broken CONFIG_HARDENED_USERCOPY_PAGESPAN.

Thanks!

-Kees

The following changes since commit afcf5441b9ff22ac57244cd45ff102ebc2e32d1a:

  arm64: Add gcc Shadow Call Stack support (2022-03-10 09:22:09 -0800)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/hardening-v5.18-rc1-fix1

for you to fetch changes up to 229a08a4f4e4f9949801cc39b6480ddc9c487183:

  ARM/dma-mapping: Remove CMA code when not built with CMA (2022-03-31 11:19:25 -0700)

----------------------------------------------------------------
hardening updates for v5.18-rc1-fix1

- Disable CONFIG_HARDENED_USERCOPY_PAGESPAN

- DMA: remove CMA code when not buiding CMA

----------------------------------------------------------------
Kees Cook (2):
      usercopy: Disable CONFIG_HARDENED_USERCOPY_PAGESPAN
      ARM/dma-mapping: Remove CMA code when not built with CMA

 arch/arm/mm/dma-mapping.c | 2 ++
 arch/arm/mm/mm.h          | 4 ++++
 include/linux/cma.h       | 4 ----
 security/Kconfig          | 2 +-
 4 files changed, 7 insertions(+), 5 deletions(-)

-- 
Kees Cook