Re: [PATCH v2 00/14] Remove clang's -Qunused-arguments from KBUILD_CPPFLAGS

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Hi Nathan,

On Mon, 23 Jan 2023 at 21:41, Nathan Chancellor <nathan@xxxxxxxxxx> wrote:
>
> Hi Naresh,
>
> On Mon, Jan 23, 2023 at 07:28:10PM +0530, Naresh Kamboju wrote:
> > FYI,
> > [ please provide comments, feedback and improvements on build/ ltp smoke tests ]
> >
> > LKFT test farm have fetched your patch series [1]
> > [PATCH v2 00/14] Remove clang's -Qunused-arguments from KBUILD_CPPFLAGS
> >  [1] https://lore.kernel.org/llvm/20221228-drop-qunused-arguments-v2-0-9adbddd20d86@xxxxxxxxxx/
>
> Thank you a lot for testing this series, it is much appreciated!
>
> It looks like this was applied on top of 6.2-rc3 if I am reading your
> logs right but your mainline testing is recent, 6.2-rc5. I think the
> errors you are seeing here are just existing mainline regressions that
> were later fixed.
>
> > Following build warnings and errors reported.
> >
> > sh:
> > gcc-11-defconfig — FAIL
> > gcc-11-shx3_defconfig — FAIL
> > https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/https___lore_kernel_org_llvm_20221228-drop-qunused-arguments-v2-1-9adbddd20d86_kernel_org/testrun/14221835/suite/build/tests/
> >
> > mainline getting passed.
> > https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.2-rc5/testrun/14298156/suite/build/test/gcc-11-defconfig/history/
> > https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.2-rc5/testrun/14298156/suite/build/test/gcc-11-shx3_defconfig/history/
> >
> > Build error:
> > In function 'follow_pmd_mask',
> >     inlined from 'follow_pud_mask' at /builds/linux/mm/gup.c:735:9,
> >     inlined from 'follow_p4d_mask' at /builds/linux/mm/gup.c:752:9,
> >     inlined from 'follow_page_mask' at /builds/linux/mm/gup.c:809:9:
> > /builds/linux/include/linux/compiler_types.h:358:45: error: call to
> > '__compiletime_assert_263' declared with attribute error: Unsupported
> > access size for {READ,WRITE}_ONCE().
> >   358 |         _compiletime_assert(condition, msg,
> > __compiletime_assert_, __COUNTER__)
>
> I think this was fixed with mainline commit 526970be53d5 ("sh/mm: Fix
> pmd_t for real"), released in 6.2-rc4. You can see a previous build
> failing in the same manner:
>
> https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.2-rc3-9-g5a41237ad1d4/testrun/14056384/suite/build/tests/
>
> > s390:
> > clang-15-defconfig — FAIL
> > https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/https___lore_kernel_org_llvm_20221228-drop-qunused-arguments-v2-1-9adbddd20d86_kernel_org/testrun/14221913/suite/build/tests/
> >
> > mainline getting passed.
> > https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.2-rc5/testrun/14300495/suite/build/test/clang-15-defconfig/history/
> >
> > Build error:
> > make --silent --keep-going --jobs=8
> > O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM_IAS=0 ARCH=s390
> > CROSS_COMPILE=s390x-linux-gnu- 'HOSTCC=sccache clang' 'CC=sccache
> > clang'
> > `.exit.text' referenced in section `__jump_table' of fs/fuse/inode.o:
> > defined in discarded section `.exit.text' of fs/fuse/inode.o
> > `.exit.text' referenced in section `__jump_table' of fs/fuse/inode.o:
> > defined in discarded section `.exit.text' of fs/fuse/inode.o
> > `.exit.text' referenced in section `__bug_table' of crypto/algboss.o:
> > defined in discarded section `.exit.text' of crypto/algboss.o
> > `.exit.text' referenced in section `__bug_table' of drivers/scsi/sd.o:
> > defined in discarded section `.exit.text' of drivers/scsi/sd.o
> > `.exit.text' referenced in section `__jump_table' of drivers/md/md.o:
> > defined in discarded section `.exit.text' of drivers/md/md.o
> > `.exit.text' referenced in section `__jump_table' of drivers/md/md.o:
> > defined in discarded section `.exit.text' of drivers/md/md.o
> > `.exit.text' referenced in section `.altinstructions' of
> > drivers/md/md.o: defined in discarded section `.exit.text' of
> > drivers/md/md.o
> > `.exit.text' referenced in section `.altinstructions' of
> > drivers/md/md.o: defined in discarded section `.exit.text' of
> > drivers/md/md.o
> > `.exit.text' referenced in section `.altinstructions' of
> > net/iucv/iucv.o: defined in discarded section `.exit.text' of
> > net/iucv/iucv.o
> > `.exit.text' referenced in section `__bug_table' of
> > drivers/s390/cio/qdio_thinint.o: defined in discarded section
> > `.exit.text' of drivers/s390/cio/qdio_thinint.o
> > `.exit.text' referenced in section `__bug_table' of
> > drivers/s390/net/qeth_l3_main.o: defined in discarded section
> > `.exit.text' of drivers/s390/net/qeth_l3_main.o
> > `.exit.text' referenced in section `__bug_table' of
> > drivers/s390/net/qeth_l3_main.o: defined in discarded section
> > `.exit.text' of drivers/s390/net/qeth_l3_main.o
> > s390x-linux-gnu-ld: BFD (GNU Binutils for Debian) 2.35.2 assertion
> > fail ../../bfd/elf64-s390.c:3349
> > make[2]: *** [/builds/linux/scripts/Makefile.vmlinux:34: vmlinux] Error 1
>
> This should be fixed with mainline commit a494398bde27 ("s390: define
> RUNTIME_DISCARD_EXIT to fix link error with GNU ld < 2.36"), released in
> 6.2-rc4 as well. Same as before, visible in mainline at one point
> without this series:
>
> https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.2-rc3-9-g5a41237ad1d4/testrun/14057142/suite/build/tests/
>
> > But,
> > Build and boot pass on arm64, arm, x86_64 and i386.
> > Build test performed for mips, parisc, riscv, s390, sh, sparc and
> > powerpc (known build errors for maple_defconfig and cell_defconfig),
>
> Good to hear!
>
> Please consider retesting this series on top of 6.2-rc5 or testing the
> current kbuild tree, which has this series applied in it:

This is the perfect place to test.

> https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git/log/?h=for-next

Build test pass on arm, arm64, i386, mips, parisc, powerpc, riscv, s390, sh,
sparc and x86_64.
Boot and LTP smoke pass on qemu-arm64, qemu-armv7, qemu-i386 and qemu-x86_64.

  Tested-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
  Tested-by: Anders Roxell <anders.roxell@xxxxxxxxxx>

Please refer to the following link for details of testing.
  https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/linux-kbuild_masahiroy-branch-kbuild-20230124/?failures_only=false&results_layout=table#!#test-results

metadata:
  git_describe : v6.2-rc5-46-ga778c9dd138b
  git_repo : https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
  git_sha : a778c9dd138b4f4410779705b444d58ce6f8fc44
  git_short_log : a778c9dd138b ("builddeb: clean generated package content")

--
Linaro LKFT
https://lkft.linaro.org

>
> Cheers,
> Nathan




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