linux-hardening - Re: [PATCH] kbuild: Enable -Wimplicit-fallthrough for clang 14.0.0+

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Date:   Tue, 17 Aug 2021 23:45:48 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Philip Li <philip.li@...el.com>,
        Nathan Chancellor <nathan@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH] kbuild: Enable -Wimplicit-fallthrough for clang 14.0.0+



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 (https://github.com/llvm/llvm-project 
> 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6)
> 
> We will ugrade to the head of llvm-project master today.

Thanks, Philip. We really appreciate it.
--
Gustavo