On Sun, Sep 13, 2020 at 10:02:51AM -0700, James Bottomley wrote:
> On Sun, 2020-09-13 at 14:26 +0800, kernel test robot wrote:
> > Hi James,
> > 
> > I love your patch! Yet something to improve:
> > 
> > [auto build test ERROR on integrity/next-integrity]
> > [also build test ERROR on linus/master v5.9-rc4 next-20200911]
> > [cannot apply to security/next-testing dhowells-fs/fscache-next]
> > [If your patch is applied to the wrong git tree, kindly drop us a
> > note.
> > And when submitting patch, we suggest to use '--base' as documented
> > in
> > https://git-scm.com/docs/git-format-patch]
> > 
> > url:    https://github.com/0day-ci/linux/commits/James-Bottomley/TPM-
> > 2-0-trusted-key-rework/20200913-013201
> > base:   https://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-i
> > ntegrity.git next-integrity
> > config: arm-randconfig-r013-20200913 (attached as .config)
> > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
> > 3170d54842655d6d936aae32b7d0bc92fce7f22e)
> > 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 arm cross compiling tool for clang build
> >         # apt-get install binutils-arm-linux-gnueabi
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross
> > ARCH=arm 
> > 
> > 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 >>):
> > 
> > > > security/keys/trusted-keys/trusted_tpm2.c:19:10: fatal error:
> > > > 'tpm2key.asn1.h' file not found
> > 
> >    #include "tpm2key.asn1.h"
> >             ^~~~~~~~~~~~~~~~
> >    1 error generated.
> 
> Do you have the actual build log for this?  On x86 the build process
> builds any precursors first, which is the tpm2key.asn1.o, which
> generates that header file, so we see:
> 
>   ASN.1   security/keys/trusted-keys/tpm2key.asn1.[ch]
>   CC [M]  security/keys/trusted-keys/trusted_tpm2.o
>   CC [M]  security/keys/trusted-keys/tpm2-policy.o
>   CC [M]  security/keys/trusted-keys/tpm2key.asn1.o
>   LD [M]  security/keys/trusted-keys/trusted.o
> 
> Is ARM doing a lazier version of that?  In which case the fix might be
> to move trusted_tpm2.o to after tpm2key.asn1.o in the Makefile, this
> line:
> 
> trusted-y += trusted_tpm2.o tpm2key.asn1.o
> 
> James

You can try to reproduce the arm build with BuildRoot. That's what I
usually do when bumping something like this with arm.

/Jarkko