Hi Lorenzo, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v6.14-rc5 next-20250303] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/mm-mremap-correctly-handle-partial-mremap-of-VMA-starting-at-0/20250303-192101 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/4cc18ebfc0cb32e9e42d86503cef3265108343e4.1740911247.git.lorenzo.stoakes%40oracle.com patch subject: [PATCH 7/7] mm/mremap: thread state through move page table operation config: x86_64-buildonly-randconfig-005-20250304 (https://download.01.org/0day-ci/archive/20250304/202503040759.5zpJdC2i-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250304/202503040759.5zpJdC2i-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202503040759.5zpJdC2i-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): mm/mremap.c: In function 'move_pgt_entry': mm/mremap.c:581:39: error: passing argument 1 of 'move_huge_pud' from incompatible pointer type [-Werror=incompatible-pointer-types] 581 | move_huge_pud(pmc, old_entry, new_entry); | ^~~ | | | struct pagetable_move_control * mm/mremap.c:478:50: note: expected 'struct vm_area_struct *' but argument is of type 'struct pagetable_move_control *' 478 | static bool move_huge_pud(struct vm_area_struct *vma, unsigned long old_addr, | ~~~~~~~~~~~~~~~~~~~~~~~^~~ >> mm/mremap.c:581:44: warning: passing argument 2 of 'move_huge_pud' makes integer from pointer without a cast [-Wint-conversion] 581 | move_huge_pud(pmc, old_entry, new_entry); | ^~~~~~~~~ | | | void * mm/mremap.c:478:69: note: expected 'long unsigned int' but argument is of type 'void *' 478 | static bool move_huge_pud(struct vm_area_struct *vma, unsigned long old_addr, | ~~~~~~~~~~~~~~^~~~~~~~ mm/mremap.c:581:55: warning: passing argument 3 of 'move_huge_pud' makes integer from pointer without a cast [-Wint-conversion] 581 | move_huge_pud(pmc, old_entry, new_entry); | ^~~~~~~~~ | | | void * mm/mremap.c:479:41: note: expected 'long unsigned int' but argument is of type 'void *' 479 | unsigned long new_addr, pud_t *old_pud, pud_t *new_pud) | ~~~~~~~~~~~~~~^~~~~~~~ mm/mremap.c:581:25: error: too few arguments to function 'move_huge_pud' 581 | move_huge_pud(pmc, old_entry, new_entry); | ^~~~~~~~~~~~~ mm/mremap.c:478:13: note: declared here 478 | static bool move_huge_pud(struct vm_area_struct *vma, unsigned long old_addr, | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/move_huge_pud +581 mm/mremap.c 552 553 /* 554 * Attempts to speedup the move by moving entry at the level corresponding to 555 * pgt_entry. Returns true if the move was successful, else false. 556 */ 557 static bool move_pgt_entry(struct pagetable_move_control *pmc, 558 enum pgt_entry entry, void *old_entry, void *new_entry) 559 { 560 bool moved = false; 561 bool need_rmap_locks = should_take_rmap_locks(pmc, entry); 562 563 /* See comment in move_ptes() */ 564 if (need_rmap_locks) 565 take_rmap_locks(pmc->old); 566 567 switch (entry) { 568 case NORMAL_PMD: 569 moved = move_normal_pmd(pmc, old_entry, new_entry); 570 break; 571 case NORMAL_PUD: 572 moved = move_normal_pud(pmc, old_entry, new_entry); 573 break; 574 case HPAGE_PMD: 575 moved = IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && 576 move_huge_pmd(pmc->old, pmc->old_addr, pmc->new_addr, old_entry, 577 new_entry); 578 break; 579 case HPAGE_PUD: 580 moved = IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && > 581 move_huge_pud(pmc, old_entry, new_entry); 582 break; 583 584 default: 585 WARN_ON_ONCE(1); 586 break; 587 } 588 589 if (need_rmap_locks) 590 drop_rmap_locks(pmc->old); 591 592 return moved; 593 } 594 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
