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Date:   Tue, 13 Dec 2022 09:51:04 -0700
From:   Nathan Chancellor <nathan@kernel.org>
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        llvm@lists.linux.dev, stable@vger.kernel.org,
        patches@lists.linux.dev, linux-kernel@vger.kernel.org,
        torvalds@linux-foundation.org, akpm@linux-foundation.org,
        linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org,
        lkft-triage@lists.linaro.org, pavel@denx.de, jonathanh@nvidia.com,
        f.fainelli@gmail.com, sudipm.mukherjee@gmail.com,
        srw@sladewatkins.net, rwarsow@gmx.de
Subject: Re: [PATCH 6.0 000/157] 6.0.13-rc1 review
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Hi Naresh,

On Tue, Dec 13, 2022 at 12:01:25PM +0530, Naresh Kamboju wrote:
> This is an additional report.
> Following issue is specific to clang nightly,
> 
> x86 clang-nightly builds failed with defconfig and tinyconfig due to
> below errors / warnings.
> 
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> Regressions found on x86_64:
> 
>     - build/clang-nightly-tinyconfig
>     - build/clang-nightly-x86_64_defconfig
>     - build/clang-nightly-allnoconfig
>     - build/clang-nightly-lkftconfig
> 
> make --silent --keep-going --jobs=8
> O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM=1 LLVM_IAS=1
> ARCH=x86_64 SRCARCH=x86 CROSS_COMPILE=x86_64-linux-gnu- HOSTCC=clang
> CC=clang
> 
> ld.lld: error: version script assignment of 'LINUX_2.6' to symbol
> '__vdso_sgx_enter_enclave' failed: symbol not defined
> llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file
> or directory
> llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file
> or directory
> make[4]: *** [/builds/linux/arch/x86/entry/vdso/Makefile:136:
> arch/x86/entry/vdso/vdso64.so] Error 1

Thanks for the report!

This is resolved in mainline now with commit 45be2ad007a9 ("x86/vdso:
Conditionally export __vdso_sgx_enter_enclave()"). I was going to
request stable backports once it was a little calmer but if people are
hitting this now, I guess now is as good a time as ever :) I believe it
should backport cleanly to 5.15+, which is where it is needed.

Cheers,
Nathan