From: kernel test robot <lkp@intel.com>
To: "Alex Shi (Tencent)" <alexs@kernel.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: [alexshi:mmunstable 24/24] arch/s390/mm/pgtable.c:577:25: error: incompatible pointer types assigning to 'struct ptdesc *' from 'pgtable_t' (aka 'pte_t *')
Date: Wed, 17 Jul 2024 22:00:31 +0800 [thread overview]
Message-ID: <202407172118.aEQxv67s-lkp@intel.com> (raw)
tree: https://github.com/alexshi/linux.git mmunstable
head: a158e7e787b56bc7f1b4bb582a0e8ec65cacec4b
commit: a158e7e787b56bc7f1b4bb582a0e8ec65cacec4b [24/24] mm/pgtable: convert ptdesc.pmd_huge_pte to ptdesc
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240717/202407172118.aEQxv67s-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project a0c6b8aef853eedaa0980f07c0a502a5a8a9740e)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240717/202407172118.aEQxv67s-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407172118.aEQxv67s-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/s390/mm/pgtable.c:11:
In file included from include/linux/mm.h:2221:
include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
500 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
501 | item];
| ~~~~
include/linux/vmstat.h:507:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
507 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
508 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:519:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
519 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
520 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:528:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
528 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
529 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> arch/s390/mm/pgtable.c:577:25: error: incompatible pointer types assigning to 'struct ptdesc *' from 'pgtable_t' (aka 'pte_t *') [-Werror,-Wincompatible-pointer-types]
577 | pmd_huge_pte(mm, pmdp) = pgtable;
| ^ ~~~~~~~
>> arch/s390/mm/pgtable.c:589:10: error: incompatible pointer types assigning to 'pgtable_t' (aka 'pte_t *') from 'struct ptdesc *' [-Werror,-Wincompatible-pointer-types]
589 | pgtable = pmd_huge_pte(mm, pmdp);
| ^ ~~~~~~~~~~~~~~~~~~~~~~
arch/s390/mm/pgtable.c:594:26: error: incompatible pointer types assigning to 'struct ptdesc *' from 'pgtable_t' (aka 'pte_t *') [-Werror,-Wincompatible-pointer-types]
594 | pmd_huge_pte(mm, pmdp) = (pgtable_t) lh->next;
| ^ ~~~~~~~~~~~~~~~~~~~~
5 warnings and 3 errors generated.
vim +577 arch/s390/mm/pgtable.c
d08de8e2d86744f Gerald Schaefer 2016-07-04 563
75077afbec1ac89 Gerald Schaefer 2012-10-08 564 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
6b0b50b0617fad5 Aneesh Kumar K.V 2013-06-05 565 void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
6b0b50b0617fad5 Aneesh Kumar K.V 2013-06-05 566 pgtable_t pgtable)
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 567 {
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 568 struct list_head *lh = (struct list_head *) pgtable;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 569
ec66ad66a0de878 Martin Schwidefsky 2014-02-12 570 assert_spin_locked(pmd_lockptr(mm, pmdp));
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 571
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 572 /* FIFO */
c389a250ab4cfa4 Kirill A. Shutemov 2013-11-14 573 if (!pmd_huge_pte(mm, pmdp))
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 574 INIT_LIST_HEAD(lh);
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 575 else
c389a250ab4cfa4 Kirill A. Shutemov 2013-11-14 576 list_add(lh, (struct list_head *) pmd_huge_pte(mm, pmdp));
c389a250ab4cfa4 Kirill A. Shutemov 2013-11-14 @577 pmd_huge_pte(mm, pmdp) = pgtable;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 578 }
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 579
6b0b50b0617fad5 Aneesh Kumar K.V 2013-06-05 580 pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 581 {
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 582 struct list_head *lh;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 583 pgtable_t pgtable;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 584 pte_t *ptep;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 585
ec66ad66a0de878 Martin Schwidefsky 2014-02-12 586 assert_spin_locked(pmd_lockptr(mm, pmdp));
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 587
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 588 /* FIFO */
c389a250ab4cfa4 Kirill A. Shutemov 2013-11-14 @589 pgtable = pmd_huge_pte(mm, pmdp);
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 590 lh = (struct list_head *) pgtable;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 591 if (list_empty(lh))
c389a250ab4cfa4 Kirill A. Shutemov 2013-11-14 592 pmd_huge_pte(mm, pmdp) = NULL;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 593 else {
c389a250ab4cfa4 Kirill A. Shutemov 2013-11-14 594 pmd_huge_pte(mm, pmdp) = (pgtable_t) lh->next;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 595 list_del(lh);
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 596 }
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 597 ptep = (pte_t *) pgtable;
b8e3b37900a57f9 Heiko Carstens 2022-02-21 598 set_pte(ptep, __pte(_PAGE_INVALID));
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 599 ptep++;
b8e3b37900a57f9 Heiko Carstens 2022-02-21 600 set_pte(ptep, __pte(_PAGE_INVALID));
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 601 return pgtable;
9501d09fa3c4ca1 Gerald Schaefer 2012-10-08 602 }
75077afbec1ac89 Gerald Schaefer 2012-10-08 603 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
1e133ab296f3ff8 Martin Schwidefsky 2016-03-08 604
:::::: The code at line 577 was first introduced by commit
:::::: c389a250ab4cfa4a3775d9f2c45271618af6d5b2 mm, thp: do not access mm->pmd_huge_pte directly
:::::: TO: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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