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

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Message-ID: <20200522113547.GL325280@hirez.programming.kicks-ass.net>
Date:   Fri, 22 May 2020 13:35:47 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Marco Elver <elver@...gle.com>
Cc:     paulmck@...nel.org, dvyukov@...gle.com, glider@...gle.com,
        andreyknvl@...gle.com, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...nel.org,
        will@...nel.org, clang-built-linux@...glegroups.com, bp@...en8.de
Subject: Re: [PATCH -tip v3 00/11] Fix KCSAN for new ONCE (require Clang 11)

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@...radead.org>