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:memcg_data-test 3/3] mm/kfence/core.c:606:9: error: no member named 'obj_exts' in 'struct slab'; did you mean 'objects'?
Date: Thu, 11 Jul 2024 21:12:53 +0800 [thread overview]
Message-ID: <202407112147.bCkSOsMy-lkp@intel.com> (raw)
tree: https://github.com/alexshi/linux.git memcg_data-test
head: 5dcc94a488cb36b012dde4bb0679dff25478cb1c
commit: 5dcc94a488cb36b012dde4bb0679dff25478cb1c [3/3] mm/memcg: alignment memcg_data define condition
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240711/202407112147.bCkSOsMy-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/20240711/202407112147.bCkSOsMy-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/202407112147.bCkSOsMy-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from mm/memcontrol.c:29:
In file included from include/linux/memcontrol.h:21:
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 +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from mm/memcontrol.c:54:
include/linux/mm_inline.h:47:41: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
47 | __mod_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~ ^ ~~~
include/linux/mm_inline.h:49:22: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
49 | NR_ZONE_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~~~~~~ ^ ~~~
In file included from mm/memcontrol.c:62:
In file included from include/linux/sched/isolation.h:7:
In file included from include/linux/tick.h:8:
In file included from include/linux/clockchips.h:14:
In file included from include/linux/clocksource.h:22:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from mm/memcontrol.c:62:
In file included from include/linux/sched/isolation.h:7:
In file included from include/linux/tick.h:8:
In file included from include/linux/clockchips.h:14:
In file included from include/linux/clocksource.h:22:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from mm/memcontrol.c:62:
In file included from include/linux/sched/isolation.h:7:
In file included from include/linux/tick.h:8:
In file included from include/linux/clockchips.h:14:
In file included from include/linux/clocksource.h:22:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> mm/memcontrol.c:3019:7: error: call to undeclared function 'alloc_slab_obj_exts'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
3019 | alloc_slab_obj_exts(slab, s, flags, false)) {
| ^
mm/memcontrol.c:3019:7: note: did you mean 'slab_obj_exts'?
mm/slab.h:567:35: note: 'slab_obj_exts' declared here
567 | static inline struct slabobj_ext *slab_obj_exts(struct slab *slab)
| ^
19 warnings and 1 error generated.
--
In file included from mm/kfence/core.c:17:
In file included from include/linux/kfence.h:12:
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 +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from mm/kfence/core.c:22:
In file included from include/linux/memblock.h:13:
In file included from arch/s390/include/asm/dma.h:5:
In file included from include/linux/io.h:14:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from mm/kfence/core.c:22:
In file included from include/linux/memblock.h:13:
In file included from arch/s390/include/asm/dma.h:5:
In file included from include/linux/io.h:14:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from mm/kfence/core.c:22:
In file included from include/linux/memblock.h:13:
In file included from arch/s390/include/asm/dma.h:5:
In file included from include/linux/io.h:14:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> mm/kfence/core.c:606:9: error: no member named 'obj_exts' in 'struct slab'; did you mean 'objects'?
606 | slab->obj_exts = (unsigned long)&kfence_metadata_init[i / 2 - 1].obj_exts |
| ^~~~~~~~
| objects
mm/kfence/../slab.h:75:17: note: 'objects' declared here
75 | unsigned objects:15;
| ^
mm/kfence/core.c:656:9: error: no member named 'obj_exts' in 'struct slab'; did you mean 'objects'?
656 | slab->obj_exts = 0;
| ^~~~~~~~
| objects
mm/kfence/../slab.h:75:17: note: 'objects' declared here
75 | unsigned objects:15;
| ^
17 warnings and 2 errors generated.
vim +606 mm/kfence/core.c
0ce20dd840897b Alexander Potapenko 2021-02-25 572
b33f778bba5ef3 Tianchen Ding 2022-03-22 573 /*
b33f778bba5ef3 Tianchen Ding 2022-03-22 574 * Initialization of the KFENCE pool after its allocation.
b33f778bba5ef3 Tianchen Ding 2022-03-22 575 * Returns 0 on success; otherwise returns the address up to
b33f778bba5ef3 Tianchen Ding 2022-03-22 576 * which partial initialization succeeded.
b33f778bba5ef3 Tianchen Ding 2022-03-22 577 */
b33f778bba5ef3 Tianchen Ding 2022-03-22 578 static unsigned long kfence_init_pool(void)
0ce20dd840897b Alexander Potapenko 2021-02-25 579 {
ec9fee79d48f2f Enze Li 2023-09-06 580 unsigned long addr;
0ce20dd840897b Alexander Potapenko 2021-02-25 581 struct page *pages;
0ce20dd840897b Alexander Potapenko 2021-02-25 582 int i;
0ce20dd840897b Alexander Potapenko 2021-02-25 583
0ce20dd840897b Alexander Potapenko 2021-02-25 584 if (!arch_kfence_init_pool())
ec9fee79d48f2f Enze Li 2023-09-06 585 return (unsigned long)__kfence_pool;
0ce20dd840897b Alexander Potapenko 2021-02-25 586
ec9fee79d48f2f Enze Li 2023-09-06 587 addr = (unsigned long)__kfence_pool;
9e7ee421ac1f8d Linus Walleij 2022-06-30 588 pages = virt_to_page(__kfence_pool);
0ce20dd840897b Alexander Potapenko 2021-02-25 589
0ce20dd840897b Alexander Potapenko 2021-02-25 590 /*
0ce20dd840897b Alexander Potapenko 2021-02-25 591 * Set up object pages: they must have PG_slab set, to avoid freeing
0ce20dd840897b Alexander Potapenko 2021-02-25 592 * these as real pages.
0ce20dd840897b Alexander Potapenko 2021-02-25 593 *
0ce20dd840897b Alexander Potapenko 2021-02-25 594 * We also want to avoid inserting kfence_free() in the kfree()
0ce20dd840897b Alexander Potapenko 2021-02-25 595 * fast-path in SLUB, and therefore need to ensure kfree() correctly
0ce20dd840897b Alexander Potapenko 2021-02-25 596 * enters __slab_free() slow-path.
0ce20dd840897b Alexander Potapenko 2021-02-25 597 */
0ce20dd840897b Alexander Potapenko 2021-02-25 598 for (i = 0; i < KFENCE_POOL_SIZE / PAGE_SIZE; i++) {
1f2803b2660f4b Muchun Song 2023-03-23 599 struct slab *slab = page_slab(nth_page(pages, i));
8f0b3649730348 Muchun Song 2022-04-01 600
0ce20dd840897b Alexander Potapenko 2021-02-25 601 if (!i || (i % 2))
0ce20dd840897b Alexander Potapenko 2021-02-25 602 continue;
0ce20dd840897b Alexander Potapenko 2021-02-25 603
8f0b3649730348 Muchun Song 2022-04-01 604 __folio_set_slab(slab_folio(slab));
4977351270ff83 Johannes Weiner 2024-07-01 605 #ifdef CONFIG_MEMCG
21c690a349baab Suren Baghdasaryan 2024-03-21 @606 slab->obj_exts = (unsigned long)&kfence_metadata_init[i / 2 - 1].obj_exts |
21c690a349baab Suren Baghdasaryan 2024-03-21 607 MEMCG_DATA_OBJEXTS;
8f0b3649730348 Muchun Song 2022-04-01 608 #endif
0ce20dd840897b Alexander Potapenko 2021-02-25 609 }
0ce20dd840897b Alexander Potapenko 2021-02-25 610
0ce20dd840897b Alexander Potapenko 2021-02-25 611 /*
0ce20dd840897b Alexander Potapenko 2021-02-25 612 * Protect the first 2 pages. The first page is mostly unnecessary, and
0ce20dd840897b Alexander Potapenko 2021-02-25 613 * merely serves as an extended guard page. However, adding one
0ce20dd840897b Alexander Potapenko 2021-02-25 614 * additional page in the beginning gives us an even number of pages,
0ce20dd840897b Alexander Potapenko 2021-02-25 615 * which simplifies the mapping of address to metadata index.
0ce20dd840897b Alexander Potapenko 2021-02-25 616 */
0ce20dd840897b Alexander Potapenko 2021-02-25 617 for (i = 0; i < 2; i++) {
0ce20dd840897b Alexander Potapenko 2021-02-25 618 if (unlikely(!kfence_protect(addr)))
b33f778bba5ef3 Tianchen Ding 2022-03-22 619 return addr;
0ce20dd840897b Alexander Potapenko 2021-02-25 620
0ce20dd840897b Alexander Potapenko 2021-02-25 621 addr += PAGE_SIZE;
0ce20dd840897b Alexander Potapenko 2021-02-25 622 }
0ce20dd840897b Alexander Potapenko 2021-02-25 623
0ce20dd840897b Alexander Potapenko 2021-02-25 624 for (i = 0; i < CONFIG_KFENCE_NUM_OBJECTS; i++) {
cabdf74e6b319c Peng Zhang 2023-07-18 625 struct kfence_metadata *meta = &kfence_metadata_init[i];
0ce20dd840897b Alexander Potapenko 2021-02-25 626
0ce20dd840897b Alexander Potapenko 2021-02-25 627 /* Initialize metadata. */
0ce20dd840897b Alexander Potapenko 2021-02-25 628 INIT_LIST_HEAD(&meta->list);
0ce20dd840897b Alexander Potapenko 2021-02-25 629 raw_spin_lock_init(&meta->lock);
0ce20dd840897b Alexander Potapenko 2021-02-25 630 meta->state = KFENCE_OBJECT_UNUSED;
0ce20dd840897b Alexander Potapenko 2021-02-25 631 meta->addr = addr; /* Initialize for validation in metadata_to_pageaddr(). */
0ce20dd840897b Alexander Potapenko 2021-02-25 632 list_add_tail(&meta->list, &kfence_freelist);
0ce20dd840897b Alexander Potapenko 2021-02-25 633
0ce20dd840897b Alexander Potapenko 2021-02-25 634 /* Protect the right redzone. */
0ce20dd840897b Alexander Potapenko 2021-02-25 635 if (unlikely(!kfence_protect(addr + PAGE_SIZE)))
3ee2d7471fa496 Muchun Song 2023-03-20 636 goto reset_slab;
0ce20dd840897b Alexander Potapenko 2021-02-25 637
0ce20dd840897b Alexander Potapenko 2021-02-25 638 addr += 2 * PAGE_SIZE;
0ce20dd840897b Alexander Potapenko 2021-02-25 639 }
0ce20dd840897b Alexander Potapenko 2021-02-25 640
cabdf74e6b319c Peng Zhang 2023-07-18 641 /*
cabdf74e6b319c Peng Zhang 2023-07-18 642 * Make kfence_metadata visible only when initialization is successful.
cabdf74e6b319c Peng Zhang 2023-07-18 643 * Otherwise, if the initialization fails and kfence_metadata is freed,
cabdf74e6b319c Peng Zhang 2023-07-18 644 * it may cause UAF in kfence_shutdown_cache().
cabdf74e6b319c Peng Zhang 2023-07-18 645 */
cabdf74e6b319c Peng Zhang 2023-07-18 646 smp_store_release(&kfence_metadata, kfence_metadata_init);
b33f778bba5ef3 Tianchen Ding 2022-03-22 647 return 0;
3ee2d7471fa496 Muchun Song 2023-03-20 648
3ee2d7471fa496 Muchun Song 2023-03-20 649 reset_slab:
3ee2d7471fa496 Muchun Song 2023-03-20 650 for (i = 0; i < KFENCE_POOL_SIZE / PAGE_SIZE; i++) {
1f2803b2660f4b Muchun Song 2023-03-23 651 struct slab *slab = page_slab(nth_page(pages, i));
3ee2d7471fa496 Muchun Song 2023-03-20 652
3ee2d7471fa496 Muchun Song 2023-03-20 653 if (!i || (i % 2))
3ee2d7471fa496 Muchun Song 2023-03-20 654 continue;
4977351270ff83 Johannes Weiner 2024-07-01 655 #ifdef CONFIG_MEMCG
21c690a349baab Suren Baghdasaryan 2024-03-21 656 slab->obj_exts = 0;
3ee2d7471fa496 Muchun Song 2023-03-20 657 #endif
3ee2d7471fa496 Muchun Song 2023-03-20 658 __folio_clear_slab(slab_folio(slab));
3ee2d7471fa496 Muchun Song 2023-03-20 659 }
3ee2d7471fa496 Muchun Song 2023-03-20 660
3ee2d7471fa496 Muchun Song 2023-03-20 661 return addr;
b33f778bba5ef3 Tianchen Ding 2022-03-22 662 }
b33f778bba5ef3 Tianchen Ding 2022-03-22 663
:::::: The code at line 606 was first introduced by commit
:::::: 21c690a349baab895dc68ab70d291e1598d7109d mm: introduce slabobj_ext to support slab object extensions
:::::: TO: Suren Baghdasaryan <surenb@google.com>
:::::: CC: Andrew Morton <akpm@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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