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Message-ID: <ab7c36ae-0942-d2e3-2a46-924c13a3d999@arm.com>
Date: Mon, 23 Sep 2019 11:57:29 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: kbuild test robot <lkp@...el.com>
Cc: Mark Rutland <mark.rutland@....com>, linux-ia64@...r.kernel.org,
linux-sh@...r.kernel.org,
Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
James Hogan <jhogan@...nel.org>,
Heiko Carstens <heiko.carstens@...ibm.com>,
Michal Hocko <mhocko@...nel.org>, linux-mm@...ck.org,
Paul Mackerras <paulus@...ba.org>, sparclinux@...r.kernel.org,
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x86@...nel.org, Russell King - ARM Linux <linux@...linux.org.uk>,
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Kees Cook <keescook@...omium.org>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
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"Kirill A . Shutemov" <kirill@...temov.name>,
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"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH V3 2/2] mm/pgtable/debug: Add test validating architecture
page table helpers
On 09/21/2019 09:30 PM, kbuild test robot wrote:
> Hi Anshuman,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on linus/master]
> [cannot apply to v5.3 next-20190919]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
>
> url: https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-debug-Add-tests-for-architecture-exported-page-table-helpers/20190920-143746
> config: ia64-allmodconfig (attached as .config)
> compiler: ia64-linux-gcc (GCC) 7.4.0
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # save the attached .config to linux build tree
> GCC_VERSION=7.4.0 make.cross ARCH=ia64
> :::::: branch date: 3 hours ago
> :::::: commit date: 3 hours ago
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@...el.com>
>
> All error/warnings (new ones prefixed by >>):
>
> In file included from include/asm-generic/pgtable-nopud.h:8:0,
> from arch/ia64/include/asm/pgtable.h:591,
> from include/linux/mm.h:99,
> from include/linux/highmem.h:8,
> from mm/arch_pgtable_test.c:14:
> mm/arch_pgtable_test.c: In function 'pud_clear_tests':
>>> include/asm-generic/pgtable-nop4d-hack.h:47:32: error: implicit declaration of function '__pgd'; did you mean '__p4d'? [-Werror=implicit-function-declaration]
> #define __pud(x) ((pud_t) { __pgd(x) })
> ^
>>> mm/arch_pgtable_test.c:162:8: note: in expansion of macro '__pud'
> pud = __pud(pud_val(pud) | RANDOM_ORVALUE);
> ^~~~~
>>> include/asm-generic/pgtable-nop4d-hack.h:47:22: warning: missing braces around initializer [-Wmissing-braces]
> #define __pud(x) ((pud_t) { __pgd(x) })
> ^
>>> mm/arch_pgtable_test.c:162:8: note: in expansion of macro '__pud'
> pud = __pud(pud_val(pud) | RANDOM_ORVALUE);
> ^~~~~
> cc1: some warnings being treated as errors
>
> # https://github.com/0day-ci/linux/commit/49047f93b076974eefa5b019311bd3b734d61f8c
> git remote add linux-review https://github.com/0day-ci/linux
> git remote update linux-review
> git checkout 49047f93b076974eefa5b019311bd3b734d61f8c
> vim +47 include/asm-generic/pgtable-nop4d-hack.h
>
> 30ec842660bd0d Kirill A. Shutemov 2017-03-09 45
> 30ec842660bd0d Kirill A. Shutemov 2017-03-09 46 #define pud_val(x) (pgd_val((x).pgd))
> 30ec842660bd0d Kirill A. Shutemov 2017-03-09 @47 #define __pud(x) ((pud_t) { __pgd(x) })
I had mentioned about this build failure in the cover letter. The same
problem also exists on arm32 platform.
- Anshuman
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