linux-kernel - Re: [PATCH] mm/debug_vm_pgtable: Fix corrupted PG_arch_1 by set_pmd

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Date:   Mon, 12 Jul 2021 18:24:25 +1000
From:   Gavin Shan <gshan@...hat.com>
To:     Anshuman Khandual <anshuman.khandual@....com>,
        kernel test robot <lkp@...el.com>, linux-mm@...ck.org
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        catalin.marinas@....com, will@...nel.org,
        akpm@...ux-foundation.org, shan.gavin@...il.com
Subject: Re: [PATCH] mm/debug_vm_pgtable: Fix corrupted PG_arch_1 by
 set_pmd_at()

On 7/12/21 1:21 PM, Anshuman Khandual wrote:
> 
> 
> On 7/8/21 6:05 AM, kernel test robot wrote:
>> Hi Gavin,
>>
>> Thank you for the patch! Yet something to improve:
>>
>> [auto build test ERROR on linus/master]
>> [cannot apply to hnaz-linux-mm/master linux/master v5.13 next-20210707]
>> [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/Gavin-Shan/mm-debug_vm_pgtable-Fix-corrupted-PG_arch_1-by-set_pmd_at/20210702-183310
>> base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3dbdb38e286903ec220aaf1fb29a8d94297da246
>> config: x86_64-allyesconfig (attached as .config)
>> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
>> reproduce (this is a W=1 build):
>>          # https://github.com/0day-ci/linux/commit/414db1c0feb54b545b3df56bc19ffff27580deb5
>>          git remote add linux-review https://github.com/0day-ci/linux
>>          git fetch --no-tags linux-review Gavin-Shan/mm-debug_vm_pgtable-Fix-corrupted-PG_arch_1-by-set_pmd_at/20210702-183310
>>          git checkout 414db1c0feb54b545b3df56bc19ffff27580deb5
>>          # save the attached .config to linux build tree
>>          make W=1 ARCH=x86_64
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@...el.com>
>>
>> All errors (new ones prefixed by >>):
>>
>>     In file included from arch/x86/include/asm/page.h:76,
>>                      from arch/x86/include/asm/thread_info.h:12,
>>                      from include/linux/thread_info.h:59,
>>                      from arch/x86/include/asm/preempt.h:7,
>>                      from include/linux/preempt.h:78,
>>                      from include/linux/spinlock.h:51,
>>                      from include/linux/mmzone.h:8,
>>                      from include/linux/gfp.h:6,
>>                      from mm/debug_vm_pgtable.c:13:
>>     mm/debug_vm_pgtable.c: In function 'pud_advanced_tests':
>>>> include/asm-generic/memory_model.h:25:37: error: invalid operands to binary + (have 'struct page *' and 'struct page *')
> 
> 
> So this problem has been fixed in the other series (which now
> includes this patch) you have posted ?
> 

Yes, Anshuman. Please ignore this one. The fix has been included into
the following series. The last patch [12/12] of that series fixes the
issue.

[PATCH 00/12] mm/debug_vm_pgtable: Enhancements

Thanks,
Gavin