Re: [kbuild-all] Re: [PATCH] mm/swap: Fix lost swap bits in unuse_pte()

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On Wed, Apr 20, 2022 at 02:23:27PM +0800, Miaohe Lin wrote:
> On 2022/4/20 13:56, kernel test robot wrote:
> > Hi Peter,
> > 
> > Thank you for the patch! Yet something to improve:
> > 
> > [auto build test ERROR on hnaz-mm/master]
> > 
> > url:    https://github.com/intel-lab-lkp/linux/commits/Peter-Xu/mm-swap-Fix-lost-swap-bits-in-unuse_pte/20220420-053845
> > base:   https://github.com/hnaz/linux-mm master
> > config: s390-randconfig-r023-20220420 (https://download.01.org/0day-ci/archive/20220420/202204201313.QYiDBRbL-lkp@xxxxxxxxx/config)
> > compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project bac6cd5bf85669e3376610cfc4c4f9ca015e7b9b)
> > 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 s390 cross compiling tool for clang build
> >         # apt-get install binutils-s390x-linux-gnu
> >         # https://github.com/intel-lab-lkp/linux/commit/355ac3eb45402f7aab25b76af029d4390af05238
> >         git remote add linux-review https://github.com/intel-lab-lkp/linux
> >         git fetch --no-tags linux-review Peter-Xu/mm-swap-Fix-lost-swap-bits-in-unuse_pte/20220420-053845
> >         git checkout 355ac3eb45402f7aab25b76af029d4390af05238
> >         # save the config file
> >         mkdir build_dir && cp config build_dir/.config
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
> > 
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> > 
> 
> The variable name is newpte. But it's written as new_pte latter. Many thanks for report!
> 
> BTW: Since this is not a formal patch (no compile tested). Is Reported-by tag still needed?

thanks, this is not needed. It mostly needed for already upstreamed one
and actually not mandatory from 0-day ci perspective.

> 
> Thanks!
> 
> > All errors (new ones prefixed by >>):
> > 
> >>> mm/swapfile.c:1824:2: error: use of undeclared identifier 'new_pte'; did you mean 'newpte'?
> >            new_pte = pte_mkold(mk_pte(page, vma->vm_page_prot));
> >            ^~~~~~~
> >            newpte
> >    mm/swapfile.c:1786:14: note: 'newpte' declared here
> >            pte_t *pte, newpte;
> >                        ^
> >    mm/swapfile.c:1826:26: error: use of undeclared identifier 'new_pte'
> >                    pte = pte_mksoft_dirty(new_pte);
> >                                           ^
> >    mm/swapfile.c:1828:23: error: use of undeclared identifier 'new_pte'
> >                    pte = pte_mkuffd_wp(new_pte);
> >                                        ^
> >    mm/swapfile.c:1829:36: error: use of undeclared identifier 'new_pte'; did you mean 'newpte'?
> >            set_pte_at(vma->vm_mm, addr, pte, new_pte);
> >                                              ^~~~~~~
> >                                              newpte
> >    mm/swapfile.c:1786:14: note: 'newpte' declared here
> >            pte_t *pte, newpte;
> >                        ^
> >    4 errors generated.
> ...
> >   1839	
> > 
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