Re: [PATCH -tip v3 00/11] Fix KCSAN for new ONCE (require Clang 11)

From: Peter Zijlstra
Date: Fri May 22 2020 - 07:38:17 EST


On Thu, May 21, 2020 at 04:20:36PM +0200, Marco Elver wrote:
> Arnd Bergmann (1):
> ubsan, kcsan: don't combine sanitizer with kcov on clang
>
> Marco Elver (10):
> kcsan: Avoid inserting __tsan_func_entry/exit if possible
> kcsan: Support distinguishing volatile accesses
> kcsan: Pass option tsan-instrument-read-before-write to Clang
> kcsan: Remove 'noinline' from __no_kcsan_or_inline
> kcsan: Restrict supported compilers
> kcsan: Update Documentation to change supported compilers
> READ_ONCE, WRITE_ONCE: Remove data_race() and unnecessary checks
> data_race: Avoid nested statement expression
> compiler.h: Move function attributes to compiler_types.h
> compiler_types.h, kasan: Use __SANITIZE_ADDRESS__ instead of
> CONFIG_KASAN to decide inlining
>
> Documentation/dev-tools/kcsan.rst | 9 +-----
> include/linux/compiler.h | 54 ++++---------------------------
> include/linux/compiler_types.h | 32 ++++++++++++++++++
> kernel/kcsan/core.c | 43 ++++++++++++++++++++++++
> lib/Kconfig.kcsan | 20 +++++++++++-
> lib/Kconfig.ubsan | 11 +++++++
> scripts/Makefile.kcsan | 15 ++++++++-
> 7 files changed, 127 insertions(+), 57 deletions(-)

LTGM

Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>