[linux-stable-rc:linux-5.4.y 2231/4843] ERROR: "__memcat_p" undefined!

[linux-stable-rc:linux-5.4.y 2231/4843] ERROR: "__memcat_p" undefined!

[kernel test robot]

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Hi Nick,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
head:   642aa3284e09f63bf1d4832798dd787b4320ca64
commit: f05f667f8764f9ec834ca3e412ed7f5a20dea3bf [2231/4843] lib/string.c: implement stpcpy
config: x86_64-randconfig-a005-20210215 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=f05f667f8764f9ec834ca3e412ed7f5a20dea3bf
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-5.4.y
        git checkout f05f667f8764f9ec834ca3e412ed7f5a20dea3bf
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> ERROR: "__memcat_p" [drivers/hwtracing/stm/stm_core.ko] undefined!

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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Re: [linux-stable-rc:linux-5.4.y 2231/4843] ERROR: "__memcat_p" undefined!

[Nick Desaulniers]

On Mon, Feb 15, 2021 at 2:49 AM kernel test robot <lkp@intel.com> wrote:
>
> Hi Nick,
>
> First bad commit (maybe != root cause):
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> head:   642aa3284e09f63bf1d4832798dd787b4320ca64
> commit: f05f667f8764f9ec834ca3e412ed7f5a20dea3bf [2231/4843] lib/string.c: implement stpcpy
> config: x86_64-randconfig-a005-20210215 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # install x86_64 cross compiling tool for clang build
>         # apt-get install binutils-x86-64-linux-gnu
>         # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=f05f667f8764f9ec834ca3e412ed7f5a20dea3bf
>         git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>         git fetch --no-tags linux-stable-rc linux-5.4.y
>         git checkout f05f667f8764f9ec834ca3e412ed7f5a20dea3bf
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> >> ERROR: "__memcat_p" [drivers/hwtracing/stm/stm_core.ko] undefined!

This error is unrelated to the referenced commit, but we did fix this
error finally in 5.7:
https://github.com/ClangBuiltLinux/linux/issues/515. This is not a
regression, but something that never worked with LLD until 5.7.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7273ad2b08f8ac9563579d16a3cf528857b26f49
looks like the commit of interest, though I seem to have left a
comment implying there were dependencies:
https://github.com/ClangBuiltLinux/linux/issues/515#issuecomment-612999929
(I no longer recall what they were).

Some other commits in tree reference that bug from the issue tracker.
https://github.com/0day-ci/linux/commit/0cf9baa2dbb8ca29f30ac8a1afb69de51f222d17
https://github.com/0day-ci/linux/commit/565508bb949dd72638b52522fb6ac6ec04ec57fc
https://github.com/0day-ci/linux/commit/0d0537aa772566473bd5310be3874060cbff8672

Not sure whether all 4 of the above worth backporting to 4.4.y?
Thoughts? (Perhaps these would allow us to add x86_64 allmodconfig CI
coverage with LLD for 4.4.y)

>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org



-- 
Thanks,
~Nick Desaulniers

Re: [linux-stable-rc:linux-5.4.y 2231/4843] ERROR: "__memcat_p" undefined!

[Greg Kroah-Hartman]

On Tue, Feb 23, 2021 at 11:56:29AM -0800, Nick Desaulniers wrote:
> On Mon, Feb 15, 2021 at 2:49 AM kernel test robot <lkp@intel.com> wrote:
> >
> > Hi Nick,
> >
> > First bad commit (maybe != root cause):
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> > head:   642aa3284e09f63bf1d4832798dd787b4320ca64
> > commit: f05f667f8764f9ec834ca3e412ed7f5a20dea3bf [2231/4843] lib/string.c: implement stpcpy
> > config: x86_64-randconfig-a005-20210215 (attached as .config)
> > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
> > reproduce (this is a W=1 build):
> >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         # install x86_64 cross compiling tool for clang build
> >         # apt-get install binutils-x86-64-linux-gnu
> >         # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=f05f667f8764f9ec834ca3e412ed7f5a20dea3bf
> >         git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> >         git fetch --no-tags linux-stable-rc linux-5.4.y
> >         git checkout f05f667f8764f9ec834ca3e412ed7f5a20dea3bf
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@intel.com>
> >
> > All errors (new ones prefixed by >>):
> >
> > >> ERROR: "__memcat_p" [drivers/hwtracing/stm/stm_core.ko] undefined!
> 
> This error is unrelated to the referenced commit, but we did fix this
> error finally in 5.7:
> https://github.com/ClangBuiltLinux/linux/issues/515. This is not a
> regression, but something that never worked with LLD until 5.7.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7273ad2b08f8ac9563579d16a3cf528857b26f49
> looks like the commit of interest, though I seem to have left a
> comment implying there were dependencies:
> https://github.com/ClangBuiltLinux/linux/issues/515#issuecomment-612999929
> (I no longer recall what they were).
> 
> Some other commits in tree reference that bug from the issue tracker.
> https://github.com/0day-ci/linux/commit/0cf9baa2dbb8ca29f30ac8a1afb69de51f222d17
> https://github.com/0day-ci/linux/commit/565508bb949dd72638b52522fb6ac6ec04ec57fc
> https://github.com/0day-ci/linux/commit/0d0537aa772566473bd5310be3874060cbff8672
> 
> Not sure whether all 4 of the above worth backporting to 4.4.y?
> Thoughts? (Perhaps these would allow us to add x86_64 allmodconfig CI
> coverage with LLD for 4.4.y)

If someone wants to backport them to 4.4.y, please feel free to submit
it!

thanks,

greg k-h