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Date:   Wed, 18 Aug 2021 15:31:26 +0800
From:   Philip Li <>
To:     "Gustavo A. R. Silva" <>
Cc:     Nathan Chancellor <>,
        Kees Cook <>,
        Masahiro Yamada <>,
        Linus Torvalds <>,
        "Gustavo A. R. Silva" <>,
        Nick Desaulniers <>,
        Linux Kbuild mailing list <>,
        Linux Kernel Mailing List <>,
        clang-built-linux <>,
Subject: Re: [PATCH] kbuild: Enable -Wimplicit-fallthrough for clang 14.0.0+

On Tue, Aug 17, 2021 at 11:45:48PM -0500, Gustavo A. R. Silva wrote:
> On 8/17/21 23:27, Philip Li wrote:
> >> Philip, how often is the kernel test robot's clang version rebuilt? Would it
> >> be possible to bump it to latest ToT or at least
> >> 9ed4a94d6451046a51ef393cd62f00710820a7e8 so that we do not get bit by this
> >> warning when we go to enable this flag?
> > Got it, currently we do upgrade in weekly cadence (but it may fall behind sometimes),
> > and the one we use now is clang version 14.0.0 ( 
> > 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6)
> > 
> > We will ugrade to the head of llvm-project master today.
> Thanks, Philip. We really appreciate it.
you are welcome. Per the upgrade in this noon. Now we start to use below commit to
do further clang build test (which is after the required 9ed4a94d6451)

commit d2b574a4dea5b718e4386bf2e26af0126e5978ce
Author: Marco Elver <>
Date:   Tue Aug 17 16:54:07 2021 +0200

    tsan: test: Initialize all fields of Params struct


> --
> Gustavo

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