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NARIBAYASHI Akira 0fc9ba59eb mm, compaction: fix fast_isolate_around() to stay within boundaries 
commit be21b32afe upstream.

Depending on the memory configuration, isolate_freepages_block() may scan
pages out of the target range and causes panic.

Panic can occur on systems with multiple zones in a single pageblock.

The reason it is rare is that it only happens in special
configurations.  Depending on how many similar systems there are, it
may be a good idea to fix this problem for older kernels as well.

The problem is that pfn as argument of fast_isolate_around() could be out
of the target range.  Therefore we should consider the case where pfn <
start_pfn, and also the case where end_pfn < pfn.

This problem should have been addressd by the commit 6e2b7044c1 ("mm,
compaction: make fast_isolate_freepages() stay within zone") but there was
an oversight.

 Case1: pfn < start_pfn

  <at memory compaction for node Y>
  |  node X's zone  | node Y's zone
  +-----------------+------------------------------...
   pageblock    ^   ^     ^
  +-----------+-----------+-----------+-----------+...
                ^   ^     ^
                ^   ^      end_pfn
                ^    start_pfn = cc->zone->zone_start_pfn
                 pfn
                <---------> scanned range by "Scan After"

 Case2: end_pfn < pfn

  <at memory compaction for node X>
  |  node X's zone  | node Y's zone
  +-----------------+------------------------------...
   pageblock  ^     ^   ^
  +-----------+-----------+-----------+-----------+...
              ^     ^   ^
              ^     ^    pfn
              ^      end_pfn
               start_pfn
              <---------> scanned range by "Scan Before"

It seems that there is no good reason to skip nr_isolated pages just after
given pfn.  So let perform simple scan from start to end instead of
dividing the scan into "Before" and "After".

Link: https://lkml.kernel.org/r/20221026112438.236336-1-a.naribayashi@fujitsu.com
Fixes: 6e2b7044c1 ("mm, compaction: make fast_isolate_freepages() stay within zone").
Signed-off-by: NARIBAYASHI Akira <a.naribayashi@fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-01-04 11:26:30 +01:00
..
damon mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes() 2022-12-08 11:30:21 +01:00
kasan - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
kfence - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
Kconfig cxl for 6.0 2022-08-10 11:07:26 -07:00
Kconfig.debug Two followon fixes for the post-5.19 series "Use pageblock_order for cma 2022-05-27 11:40:49 -07:00
Makefile mm: shrinkers: introduce debugfs interface for memory shrinkers 2022-07-03 18:08:40 -07:00
backing-dev.c writeback: avoid use-after-free after removing device 2022-08-28 14:02:43 -07:00
balloon_compaction.c mm: Convert all PageMovable users to movable_operations 2022-08-02 12:34:03 -04:00
bootmem_info.c bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem 2022-08-28 14:02:45 -07:00
cma.c Revert "mm/cma.c: remove redundant cma_mutex lock" 2022-05-13 15:11:26 -07:00
cma.h mm/cma: provide option to opt out from exposing pages on activation failure 2022-03-22 15:57:09 -07:00
cma_debug.c mm/cma_debug.c: align the name buffer length as struct cma 2022-07-29 18:07:16 -07:00
cma_sysfs.c mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
compaction.c mm, compaction: fix fast_isolate_around() to stay within boundaries 2023-01-04 11:26:30 +01:00
debug.c mm: unexport page_init_poison 2022-03-24 19:06:45 -07:00
debug_page_ref.c
…
debug_vm_pgtable.c docs: rename Documentation/vm to Documentation/mm 2022-06-27 12:52:53 -07:00
dmapool.c mm/dmapool.c: revert "make dma pool to use kmalloc_node" 2022-01-15 16:30:28 +02:00
early_ioremap.c mm/early_ioremap: declare early_memremap_pgprot_adjust() 2022-03-22 15:57:11 -07:00
fadvise.c riscv: compat: syscall: Add compat_sys_call_table implementation 2022-04-26 13:36:25 -07:00
failslab.c mm: fix unexpected changes to {failslab|fail_page_alloc}.attr 2022-12-02 17:43:13 +01:00
filemap.c mm: fs: initialize fsdata passed to write_begin/write_end interface 2022-11-26 09:27:56 +01:00
folio-compat.c mm/folio-compat: Remove migration compatibility functions 2022-08-02 12:34:04 -04:00
frontswap.c frontswap: don't call ->init if no ops are registered 2022-09-26 12:14:34 -07:00
gup.c mm/gup: disallow FOLL_FORCE|FOLL_WRITE on hugetlb mappings 2022-12-31 13:26:53 +01:00
gup_test.c mm: rename is_pinnable_page() to is_longterm_pinnable_page() 2022-07-17 17:14:27 -07:00
gup_test.h selftests/vm: gup_test: fix test flag 2021-05-05 11:27:26 -07:00
highmem.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
hmm.c mm/hmm: fault non-owner device private entries 2022-07-29 11:33:37 -07:00
huge_memory.c mm: prep_compound_tail() clear page->private 2022-11-04 00:00:23 +09:00
hugetlb.c hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing 2022-12-14 11:40:50 +01:00
hugetlb_cgroup.c hugetlb_cgroup: fix wrong hugetlb cgroup numa stat 2022-07-29 18:07:17 -07:00
hugetlb_vmemmap.c mm: hugetlb_vmemmap: include missing linux/moduleparam.h 2022-11-16 10:04:10 +01:00
hugetlb_vmemmap.h mm: hugetlb_vmemmap: improve hugetlb_vmemmap code readability 2022-08-08 18:06:43 -07:00
hwpoison-inject.c mm/memory-failure: disable unpoison once hw error happens 2022-06-16 19:11:32 -07:00
init-mm.c kernel/fork: Initialize mm's PASID 2022-02-14 19:51:47 +01:00
internal.h - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
interval_tree.c mm/interval_tree: add comments to improve code readability 2021-04-30 11:20:38 -07:00
io-mapping.c mm: add a io_mapping_map_user helper 2021-04-30 11:20:39 -07:00
ioremap.c mm: ioremap: Add ioremap/iounmap_allowed() 2022-06-27 12:22:31 +01:00
khugepaged.c mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths 2022-12-14 11:40:50 +01:00
kmemleak.c mm/kmemleak: prevent soft lockup in kmemleak_scan()'s object iteration loops 2022-11-04 00:00:23 +09:00
ksm.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
list_lru.c mm: kmem: make mem_cgroup_from_obj() vmalloc()-safe 2022-06-16 19:48:31 -07:00
maccess.c maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault() 2022-11-26 09:27:49 +01:00
madvise.c madvise: use zap_page_range_single for madvise dontneed 2022-12-14 11:40:44 +01:00
mapping_dirty_helpers.c mm: move tlb_flush_pending inline helpers to mm_inline.h 2022-01-15 16:30:27 +02:00
memblock.c memblock updates for v5.20 2022-08-09 09:48:30 -07:00
memcontrol.c memcg: fix possible use-after-free in memcg_write_event_control() 2022-12-14 11:40:52 +01:00
memfd.c memfd: fix F_SEAL_WRITE after shmem huge page allocated 2022-03-05 11:08:32 -08:00
memory-failure.c hugetlbfs: don't delete error page from pagecache 2022-11-26 09:27:22 +01:00
memory.c hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing 2022-12-14 11:40:50 +01:00
memory_hotplug.c mm: use is_zone_movable_page() helper 2022-07-29 18:07:20 -07:00
mempolicy.c mm/mempolicy: fix memory leak in set_mempolicy_home_node system call 2023-01-04 11:26:28 +01:00
mempool.c mm/mempool: use might_alloc() 2022-06-16 19:48:30 -07:00
memremap.c mm/memremap.c: map FS_DAX device memory as decrypted 2022-11-16 10:04:10 +01:00
memtest.c
…
migrate.c mm: migrate: fix return value if all subpages of THPs are migrated successfully 2022-11-04 00:00:23 +09:00
migrate_device.c mm/migrate_device.c: copy pte dirty bit to page 2022-09-11 16:22:30 -07:00
mincore.c mm: teach core mm about pte markers 2022-05-13 07:20:09 -07:00
mlock.c mm: handling Non-LRU pages returned by vm_normal_pages 2022-07-17 17:14:28 -07:00
mm_init.c include/linux/page-flags-layout.h: cleanups 2021-04-30 11:20:42 -07:00
mmap.c mm/mmap: undo ->mmap() when arch_validate_flags() fails 2022-10-21 12:37:42 +02:00
mmap_lock.c mm: mmap_lock: fix disabling preemption directly 2021-07-23 17:43:28 -07:00
mmu_gather.c mm/khugepaged: fix GUP-fast interaction by sending IPI 2022-12-14 11:40:50 +01:00
mmu_notifier.c mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() 2022-04-21 20:01:10 -07:00
mmzone.c Folio changes for 5.18 2022-03-22 17:03:12 -07:00
mprotect.c mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in 2022-10-21 12:37:42 +02:00
mremap.c Yang Shi has improved the behaviour of khugepaged collapsing of readonly 2022-05-26 12:32:41 -07:00
msync.c mm/msync: exit early when the flags is an MS_ASYNC and start < vm_start 2021-04-30 11:20:37 -07:00
nommu.c mm: nommu: pass a pointer to virt_to_page() 2022-07-17 17:14:37 -07:00
oom_kill.c mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery 2022-06-01 15:57:16 -07:00
page-writeback.c writeback: avoid use-after-free after removing device 2022-08-28 14:02:43 -07:00
page_alloc.c mm: fix unexpected changes to {failslab|fail_page_alloc}.attr 2022-12-02 17:43:13 +01:00
page_counter.c mm/page_counter: remove an incorrect call to propagate_protected_usage() 2022-01-15 16:30:27 +02:00
page_ext.c mm: use for_each_online_node and node_online instead of open coding 2022-04-29 14:36:58 -07:00
page_idle.c mm: don't be stuck to rmap lock on reclaim path 2022-05-19 14:08:54 -07:00
page_io.c Yang Shi has improved the behaviour of khugepaged collapsing of readonly 2022-05-26 12:32:41 -07:00
page_isolation.c mm/page_isolation: fix isolate_single_pageblock() isolation behavior 2022-09-26 12:14:34 -07:00
page_owner.c Yang Shi has improved the behaviour of khugepaged collapsing of readonly 2022-05-26 12:32:41 -07:00
page_poison.c mm: page_poison: print page info when corruption is caught 2021-04-30 11:20:36 -07:00
page_reporting.c mm/page_reporting: allow driver to specify reporting order 2021-06-29 10:53:47 -07:00
page_reporting.h mm/page_reporting: export reporting order as module parameter 2021-06-29 10:53:47 -07:00
page_table_check.c Six hotfixes. One from Miaohe Lin is considered a minor thing so it isn't 2022-05-27 11:29:35 -07:00
page_vma_mapped.c mm/page_vma_mapped.c: use helper function huge_pte_lock 2022-07-17 17:14:47 -07:00
pagewalk.c mm: pagewalk: Fix race between unmap and page walker 2022-09-03 10:13:13 -07:00
percpu-internal.h percpu: improve percpu_alloc_percpu event trace 2022-05-13 07:20:18 -07:00
percpu-km.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu-stats.c mm: use vmalloc_array and vcalloc for array allocations 2022-03-08 09:30:46 -05:00
percpu-vm.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu.c mm: percpu: use kmemleak_ignore_phys() instead of kmemleak_free() 2022-07-17 17:14:47 -07:00
pgalloc-track.h mm: fix typos in comments 2021-05-07 00:26:35 -07:00
pgtable-generic.c mm: avoid unnecessary flush on change_huge_pmd() 2022-05-13 07:20:05 -07:00
process_vm_access.c mm/process_vm_access.c: remove duplicate include 2021-05-05 11:27:27 -07:00
ptdump.c mm: pagewalk: Fix race between unmap and page walker 2022-09-03 10:13:13 -07:00
readahead.c filemap: Fix serialization adding transparent huge pages to page cache 2022-06-23 12:22:00 -04:00
rmap.c mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse 2022-08-31 15:45:10 -07:00
rodata_test.c mm/rodata_test.c: fix missing function declaration 2020-08-21 09:52:53 -07:00
secretmem.c mm: fix dereferencing possible ERR_PTR 2022-09-11 16:22:31 -07:00
shmem.c tmpfs: fix data loss from failed fallocate 2022-12-14 11:40:52 +01:00
shrinker_debug.c mm: shrinkers: fix double kfree on shrinker name 2022-07-29 18:07:13 -07:00
shuffle.c mm: eliminate "expecting prototype" kernel-doc warnings 2021-04-16 16:10:36 -07:00
shuffle.h mm/shuffle: fix section mismatch warning 2021-05-22 15:09:07 -10:00
slab.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
slab.h mm/slab_common: move generic bulk alloc/free functions to SLOB 2022-07-20 13:30:12 +02:00
slab_common.c mm/slab_common: fix possible double free of kmem_cache 2022-09-19 16:27:26 +02:00
slob.c mm/slab_common: move generic bulk alloc/free functions to SLOB 2022-07-20 13:30:12 +02:00
slub.c mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context. 2022-09-22 21:48:48 +02:00
sparse-vmemmap.c mm: hugetlb_vmemmap: move vmemmap code related to HugeTLB to hugetlb_vmemmap.c 2022-08-08 18:06:42 -07:00
sparse.c mm: memory_hotplug: enumerate all supported section flags 2022-07-03 18:08:49 -07:00
swap.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
swap.h mm/khugepaged: try to free transhuge swapcache when possible 2022-07-03 18:08:52 -07:00
swap_cgroup.c mm: use vmalloc_array and vcalloc for array allocations 2022-03-08 09:30:46 -05:00
swap_slots.c arm64: enable THP_SWAP for arm64 2022-07-20 10:52:40 +01:00
swap_state.c mm: fix VM_BUG_ON in __delete_from_swap_cache() 2022-09-11 16:22:31 -07:00
swapfile.c mm/swap: convert delete_from_swap_cache() to take a folio 2022-07-03 18:08:48 -07:00
truncate.c mm: Remove __delete_from_page_cache() 2022-06-29 08:51:05 -04:00
usercopy.c usercopy: use unsigned long instead of uintptr_t 2022-07-01 17:03:38 -07:00
userfaultfd.c mm/shmem: use page_mapping() to detect page cache for uffd continue 2022-11-16 10:04:10 +01:00
util.c mm: fix BUG splat with kvmalloc + GFP_ATOMIC 2022-09-30 18:46:31 -07:00
vmacache.c kernel: better document the use_mm/unuse_mm API contract 2020-06-10 19:14:18 -07:00
vmalloc.c mm/vmalloc: extend __find_vmap_area() with one more argument 2022-07-03 18:08:41 -07:00
vmpressure.c mm/vmpressure: fix data-race with memcg->socket_pressure 2021-11-06 13:30:40 -07:00
vmscan.c mm: vmscan: fix extreme overreclaim and swap floods 2022-12-02 17:43:12 +01:00
vmstat.c mm: add DEVICE_ZONE to FOR_ALL_ZONES 2022-08-20 15:17:45 -07:00
workingset.c mm: shrinkers: provide shrinkers with names 2022-07-03 18:08:40 -07:00
z3fold.c mm: Convert all PageMovable users to movable_operations 2022-08-02 12:34:03 -04:00
zbud.c mm/zbud: add kerneldoc fields for zbud_pool 2021-07-01 11:06:03 -07:00
zpool.c zpool: remove the list of pools_head 2022-01-15 16:30:31 +02:00
zsmalloc.c mm/zsmalloc: do not attempt to free IS_ERR handle 2022-08-28 14:02:44 -07:00
zswap.c zswap: memcg accounting 2022-05-19 14:08:53 -07:00