Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-26 12:52:30 +00:00
Code Issues Packages Projects Releases Wiki Activity
88ee134320
linux/mm
History
Zi Yan 88ee134320 mm: fix a potential infinite loop in start_isolate_page_range() 
In isolate_single_pageblock() called by start_isolate_page_range(), there
are some pageblock isolation issues causing a potential infinite loop when
isolating a page range.  This is reported by Qian Cai.

1. the pageblock was isolated by just changing pageblock migratetype
   without checking unmovable pages. Calling set_migratetype_isolate() to
   isolate pageblock properly.
2. an off-by-one error caused migrating pages unnecessarily, since the page
   is not crossing pageblock boundary.
3. migrating a compound page across pageblock boundary then splitting the
   free page later has a small race window that the free page might be
   allocated again, so that the code will try again, causing an potential
   infinite loop. Temporarily set the to-be-migrated page's pageblock to
   MIGRATE_ISOLATE to prevent that and bail out early if no free page is
   found after page migration.

An additional fix to split_free_page() aims to avoid crashing in
__free_one_page().  When the free page is split at the specified
split_pfn_offset, free_page_order should check both the first bit of
free_page_pfn and the last bit of split_pfn_offset and use the smaller
one.  For example, if free_page_pfn=0x10000, split_pfn_offset=0xc000,
free_page_order should first be 0x8000 then 0x4000, instead of 0x4000 then
0x8000, which the original algorithm did.

[akpm@linux-foundation.org: suppress min() warning]
Link: https://lkml.kernel.org/r/20220524194756.1698351-1-zi.yan@sent.com
Fixes: b2c9e2fbba ("mm: make alloc_contig_range work at pageblock granularity")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reported-by: Qian Cai <quic_qiancai@quicinc.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Hildenbrand <david@redhat.com>
Cc: Eric Ren <renzhengeek@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-05-25 10:47:47 -07:00
..
damon mm: damon: use HPAGE_PMD_SIZE 2022-05-19 14:08:55 -07:00
kasan kasan: give better names to shadow values 2022-05-13 07:20:19 -07:00
kfence kfence: enable check kfence canary on panic via boot param 2022-05-13 07:20:06 -07:00
backing-dev.c remove congestion tracking framework 2022-03-22 15:57:01 -07:00
balloon_compaction.c mm/balloon_compaction: make balloon page compaction callbacks static 2022-03-28 16:52:57 -04:00
bootmem_info.c bootmem: Use page->index instead of page->freelist 2022-01-06 12:27:03 +01:00
cma_debug.c
cma_sysfs.c
cma.c mm/cma: provide option to opt out from exposing pages on activation failure 2022-03-22 15:57:09 -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
compaction.c mm, compaction: fast_find_migrateblock() should return pfn in the target zone 2022-05-13 16:48:57 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm/debug_vm_pgtable: add tests for __HAVE_ARCH_PTE_SWP_EXCLUSIVE 2022-05-09 18:20:45 -07:00
debug.c mm: unexport page_init_poison 2022-03-24 19:06:45 -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 remove inode_congested() 2022-03-22 15:57:01 -07:00
failslab.c mm: fix missing handler for __GFP_NOWARN 2022-05-19 14:08:55 -07:00
filemap.c mm: teach core mm about pte markers 2022-05-13 07:20:09 -07:00
folio-compat.c mm/rmap: Convert rmap_walk() to take a folio 2022-03-21 13:01:35 -04:00
frontswap.c frontswap: remove support for multiple ops 2022-01-22 08:33:38 +02:00
gup_test.c
gup_test.h
gup.c mm/gup: fix comments to pin_user_pages_*() 2022-05-09 18:20:47 -07:00
highmem.c highmem: fix checks in __kmap_local_sched_{in,out} 2022-04-08 14:20:36 -10:00
hmm.c mm: teach core mm about pte markers 2022-05-13 07:20:09 -07:00
huge_memory.c mm: khugepaged: make khugepaged_enter() void function 2022-05-19 14:08:49 -07:00
hugetlb_cgroup.c hugetlb: add hugetlb.*.numa_stat file 2022-01-15 16:30:29 +02:00
hugetlb_vmemmap.c mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl 2022-05-13 16:48:56 -07:00
hugetlb_vmemmap.h mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP* 2022-04-28 23:16:15 -07:00
hugetlb.c mm/hugetlb: handle uffd-wp during fork() 2022-05-13 07:20:11 -07:00
hwpoison-inject.c mm/hwpoison: disable hwpoison filter during removing 2022-05-13 07:20:19 -07:00
init-mm.c kernel/fork: Initialize mm's PASID 2022-02-14 19:51:47 +01:00
internal.h mm: fix missing handler for __GFP_NOWARN 2022-05-19 14:08:55 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig mm: Kconfig: simplify zswap configuration 2022-05-19 14:08:53 -07:00
Kconfig.debug mm: page table check 2022-01-15 16:30:28 +02:00
khugepaged.c mm: khugepaged: introduce khugepaged_enter_vma() helper 2022-05-19 14:08:50 -07:00
kmemleak.c mm: kmemleak: take a full lowmem check in kmemleak_*_phys() 2022-04-15 14:49:56 -07:00
ksm.c mm: don't be stuck to rmap lock on reclaim path 2022-05-19 14:08:54 -07:00
list_lru.c mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()" 2022-04-08 14:20:36 -10:00
maccess.c asm-generic updates for 5.18 2022-03-23 18:03:08 -07:00
madvise.c mm: submit multipage reads for SWP_FS_OPS swap-space 2022-05-09 18:20:49 -07:00
Makefile mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP* 2022-04-28 23:16:15 -07:00
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: test suite and a small cleanup 2022-03-27 13:36:06 -07:00
memcontrol.c zswap: memcg accounting 2022-05-19 14:08:53 -07:00
memfd.c memfd: fix F_SEAL_WRITE after shmem huge page allocated 2022-03-05 11:08:32 -08:00
memory_hotplug.c mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl 2022-05-13 16:48:56 -07:00
memory-failure.c mm: don't be stuck to rmap lock on reclaim path 2022-05-19 14:08:54 -07:00
memory.c mm/swap: avoid calling swp_swap_info when try to check SWP_STABLE_WRITES 2022-05-19 14:08:51 -07:00
mempolicy.c mm/mempolicy: fix uninit-value in mpol_rebind_policy() 2022-05-19 14:08:54 -07:00
mempool.c mm: remove spurious blkdev.h includes 2021-10-18 06:17:01 -06:00
memremap.c mm/page-flags: reuse PG_mappedtodisk as PG_anon_exclusive for PageAnon() pages 2022-05-09 18:20:44 -07:00
memtest.c
migrate_device.c mm: remember exclusively mapped anonymous pages with PG_anon_exclusive 2022-05-09 18:20:44 -07:00
migrate.c mm/migrate: convert move_to_new_page() into move_to_new_folio() 2022-05-13 07:20:17 -07:00
mincore.c mm: teach core mm about pte markers 2022-05-13 07:20:09 -07:00
mlock.c mm/munlock: protect the per-CPU pagevec by a local_lock_t 2022-04-01 11:46:09 -07:00
mm_init.c
mmap_lock.c
mmap.c mm: mmap: register suitable readonly file vmas for khugepaged 2022-05-19 14:08:50 -07:00
mmu_gather.c mm/mmu_gather: limit free batch count and add schedule point in tlb_batch_pages_flush 2022-04-28 23:16:12 -07:00
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/hugetlb: handle UFFDIO_WRITEPROTECT 2022-05-13 07:20:11 -07:00
mremap.c mm: hugetlb: considering PMD sharing when flushing cache/TLBs 2022-05-13 07:20:07 -07:00
msync.c
nommu.c no-MMU: expose vmalloc_huge() for alloc_large_system_hash() 2022-04-25 10:11:49 -07:00
oom_kill.c oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup 2022-04-21 20:01:10 -07:00
page_alloc.c mm: fix a potential infinite loop in start_isolate_page_range() 2022-05-25 10:47:47 -07:00
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 MM: handle THP in swap_*page_fs() - count_vm_events() 2022-05-09 18:20:49 -07:00
page_isolation.c mm: fix a potential infinite loop in start_isolate_page_range() 2022-05-25 10:47:47 -07:00
page_owner.c mm/page_owner.c: add missing __initdata attribute 2022-05-19 14:08:54 -07:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c mm: page_table_check: move pxx_user_accessible_page into x86 2022-05-13 07:20:17 -07:00
page_vma_mapped.c mm: pvmw: add support for walking devmap pages 2022-04-28 23:16:10 -07:00
page-writeback.c mm: rework calculation of bdi_min_ratio in bdi_set_min_ratio 2022-04-28 23:15:57 -07:00
pagewalk.c
percpu-internal.h percpu: improve percpu_alloc_percpu event trace 2022-05-13 07:20:18 -07:00
percpu-km.c
percpu-stats.c mm: use vmalloc_array and vcalloc for array allocations 2022-03-08 09:30:46 -05:00
percpu-vm.c
percpu.c percpu: improve percpu_alloc_percpu event trace 2022-05-13 07:20:18 -07:00
pgalloc-track.h
pgtable-generic.c mm: avoid unnecessary flush on change_huge_pmd() 2022-05-13 07:20:05 -07:00
process_vm_access.c
ptdump.c mm: sparsemem: use page table lock to protect kernel pmd operations 2022-03-22 15:57:08 -07:00
readahead.c readahead: Update comments 2022-04-01 14:40:42 -04:00
rmap.c mm: don't be stuck to rmap lock on reclaim path 2022-05-19 14:08:54 -07:00
rodata_test.c
secretmem.c mm/secretmem: fix panic when growing a memfd_secret 2022-04-15 14:49:54 -07:00
shmem.c mm/shmem: fix shmem folio swapoff hang 2022-05-25 10:47:47 -07:00
shuffle.c
shuffle.h
slab_common.c mm: make minimum slab alignment a runtime property 2022-05-13 07:20:07 -07:00
slab.c mm: make minimum slab alignment a runtime property 2022-05-13 07:20:07 -07:00
slab.h mm, kfence: support kmem_dump_obj() for KFENCE objects 2022-04-15 14:49:55 -07:00
slob.c mm: make minimum slab alignment a runtime property 2022-05-13 07:20:07 -07:00
slub.c mm, kfence: support kmem_dump_obj() for KFENCE objects 2022-04-15 14:49:55 -07:00
sparse-vmemmap.c mm/sparse-vmemmap: improve memory savings for compound devmaps 2022-04-28 23:16:16 -07:00
sparse.c mm/memory-failure.c: move clear_hwpoisoned_pages 2022-05-13 07:20:19 -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 mm/swap: remove buggy cache->nr check in refill_swap_slots_cache 2022-05-19 14:08:51 -07:00
swap_state.c mm/swap: use helper macro __ATTR_RW 2022-05-19 14:08:50 -07:00
swap.c mm/swap: fix the comment of get_kernel_pages 2022-05-19 14:08:52 -07:00
swap.h swap: convert add_to_swap() to take a folio 2022-05-13 07:20:15 -07:00
swapfile.c mm/swap: fix comment about swap extent 2022-05-19 14:08:52 -07:00
truncate.c Filesystem folio changes for 5.18 2022-03-22 18:26:56 -07:00
usercopy.c Merge branch 'akpm' (patches from Andrew) 2022-03-22 16:11:53 -07:00
userfaultfd.c mm/uffd: enable write protection for shmem & hugetlbfs 2022-05-13 07:20:11 -07:00
util.c mm: create new mm/swap.h header file 2022-05-09 18:20:47 -07:00
vmacache.c
vmalloc.c mm/vmalloc: use raw_cpu_ptr() for vmap_block_queue access 2022-05-13 07:20:18 -07:00
vmpressure.c mm/vmpressure: fix data-race with memcg->socket_pressure 2021-11-06 13:30:40 -07:00
vmscan.c mm: don't be stuck to rmap lock on reclaim path 2022-05-19 14:08:54 -07:00
vmstat.c mm: zswap: add basic meminfo and vmstat coverage 2022-05-19 14:08:53 -07:00
workingset.c memcg: sync flush only if periodic flush is delayed 2022-04-21 20:01:09 -07:00
z3fold.c mm/z3fold: remove unneeded PAGE_HEADLESS check in free_handle() 2022-04-28 23:16:06 -07:00
zbud.c
zpool.c zpool: remove the list of pools_head 2022-01-15 16:30:31 +02:00
zsmalloc.c zsmalloc: replace get_cpu_var with local_lock 2022-01-22 08:33:37 +02:00
zswap.c zswap: memcg accounting 2022-05-19 14:08:53 -07:00