linux-kernel - [PATCH 0/3] compiler_types: Introduce __counted_by

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Message-Id: <20251020220005.work.095-kees@kernel.org>
Date: Mon, 20 Oct 2025 15:01:14 -0700
From: Kees Cook <kees@...nel.org>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: Kees Cook <kees@...nel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
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Subject: [PATCH 0/3] compiler_types: Introduce __counted_by_ptr()

Hi,

Add the __counted_by_ptr() macro for annotating pointer struct members
with the "counted_by" attribute. Add LKDTM test, and a first user.

-Kees

Kees Cook (3):
  compiler_types: Introduce __counted_by_ptr()
  lkdtm/bugs: Add __counted_by_ptr() test PTR_BOUNDS
  coredump: Use __counted_by_ptr for struct core_name::corename

 init/Kconfig                            | 11 +++
 Makefile                                |  4 ++
 include/linux/compiler_types.h          | 21 +++++-
 include/uapi/linux/stddef.h             |  4 ++
 drivers/misc/lkdtm/bugs.c               | 90 ++++++++++++++++++++++---
 fs/coredump.c                           |  8 +--
 tools/testing/selftests/lkdtm/tests.txt |  2 +
 7 files changed, 127 insertions(+), 13 deletions(-)

-- 
2.34.1