linux-kernel - [GIT PULL] hardening fixes for v6.17-rc1

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Message-ID: <202507291728.51BAA26@keescook>
Date: Tue, 29 Jul 2025 17:29:41 -0700
From: Kees Cook <kees@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Hans de Goede <hansg@...nel.org>, Kees Cook <kees@...nel.org>,
	kernel test robot <lkp@...el.com>, Marco Elver <elver@...gle.com>,
	Nathan Chancellor <nathan@...nel.org>,
	syzbot+5245cb609175fb6e8122@...kaller.appspotmail.com,
	zepta <z3ptaa@...il.com>
Subject: [GIT PULL] hardening fixes for v6.17-rc1

Hi Linus,

Please pull these hardening fixes for v6.17-rc1. Notably, this contains
the fix for for the GCC __init mess I created with the kstack_erase
annotations.

Thanks!

-Kees

The following changes since commit 32e42ab9fc88a884435c27527a433f61c4d2b61b:

  sched/task_stack: Add missing const qualifier to end_of_stack() (2025-07-26 14:28:35 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/hardening-v6.17-rc1-fix1

for you to fetch changes up to f627b51aaa041cba715b59026cf2d9cb1476c7ed:

  compiler_types: Provide __no_kstack_erase to disable coverage only on Clang (2025-07-29 17:19:35 -0700)

----------------------------------------------------------------
hardening fixes for v6.17-rc1

- staging: media: atomisp: Fix stack buffer overflow in gmin_get_var_int()
  I was asked to carry this fix, so here it is. :)

- fortify: Fix incorrect reporting of read buffer size

- kstack_erase: Fix missed export of renamed KSTACK_ERASE_CFLAGS

- compiler_types: Provide __no_kstack_erase to disable coverage only on Clang

----------------------------------------------------------------
Kees Cook (4):
      staging: media: atomisp: Fix stack buffer overflow in gmin_get_var_int()
      kstack_erase: Fix missed export of renamed KSTACK_ERASE_CFLAGS
      fortify: Fix incorrect reporting of read buffer size
      compiler_types: Provide __no_kstack_erase to disable coverage only on Clang

 scripts/Makefile.kstack_erase                             | 2 +-
 arch/x86/include/asm/init.h                               | 2 +-
 include/linux/compiler-clang.h                            | 3 +++
 include/linux/compiler_types.h                            | 4 ++++
 include/linux/fortify-string.h                            | 2 +-
 include/linux/init.h                                      | 2 +-
 drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 9 +++++----
 7 files changed, 16 insertions(+), 8 deletions(-)

-- 
Kees Cook