On Sat, 22 May 2021 23:05:26 +0800 kernel test robot <lkp@xxxxxxxxx> 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.
