Re: [linux-next:master] BUILD REGRESSION 8dca2cd055ffb78b37f52f0bf0bd20c249619c4d

["Chen, Rong A" <rong.a.chen@intel.com>]

On 5/23/2021 2:29 AM, Andrew Morton wrote:
> On Sat, 22 May 2021 23:05:26 +0800 kernel test robot <lkp@intel.com> wrote:
> 
>> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>> branch HEAD: 8dca2cd055ffb78b37f52f0bf0bd20c249619c4d  Add linux-next specific files for 20210521
>>
>> mm/mremap.c:306:8: warning: variable 'pud' set but not used [-Wunused-but-set-variable]
>>
>> ...
>>
>> |-- arm64-randconfig-r014-20210521
>> |   |-- kernel-kallsyms.c:warning:no-previous-prototype-for-kallsyms_lookup_buildid
>> |   `-- mm-mremap.c:warning:variable-pud-set-but-not-used
>>
>> ...
>>
>> |-- i386-allmodconfig
>> |   |-- drivers-net-wireless-ath-ath10k-htt_rx.c:warning:variable-more_frags-set-but-not-used
>> |   |-- kernel-kallsyms.c:warning:no-previous-prototype-for-kallsyms_lookup_buildid
>> |   `-- mm-mremap.c:warning:variable-pud-set-but-not-used
>>
> 
> I can't reproduce this.  move_normal_pud() does
> 
> 	pud_populate(mm, new_pud, (pmd_t *)pud_page_vaddr(pud));
> 
> and I can't see a version of pud_page_vaddr() which doesn't reference its
> argument.
> 
> Maybe it was fixed since this release of next.
> 

Hi Andrew,

The original report can be found at 
https://lore.kernel.org/linux-mm/202105180059.7qbrqAhs-lkp@intel.com/

Best Regards,
Rong Chen