linux/mm
Dennis Zhou 93274f1dd6 percpu: flush tlb in pcpu_reclaim_populated()
Prior to "percpu: implement partial chunk depopulation",
pcpu_depopulate_chunk() was called only on the destruction path. This
meant the virtual address range was on its way back to vmalloc which
will handle flushing the tlbs for us.

However, with pcpu_reclaim_populated(), we are now calling
pcpu_depopulate_chunk() during the active lifecycle of a chunk.
Therefore, we need to flush the tlb as well otherwise we can end up
accessing the wrong page through an invalid tlb mapping as reported in
[1].

[1] https://lore.kernel.org/lkml/20210702191140.GA3166599@roeck-us.net/

Fixes: f183324133 ("percpu: implement partial chunk depopulation")
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
2021-07-04 18:30:17 +00:00
..
kasan Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
kfence kfence: unconditionally use unbound work queue 2021-07-01 11:06:03 -07:00
backing-dev.c writeback, cgroup: release dying cgwbs by switching attached inodes 2021-06-29 10:53:48 -07:00
balloon_compaction.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
bootmem_info.c mm: memory_hotplug: factor out bootmem core functions to bootmem_info.c 2021-06-30 20:47:25 -07:00
cleancache.c
cma_debug.c mm/cma: change cma mutex to irq safe spinlock 2021-05-05 11:27:21 -07:00
cma_sysfs.c mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
cma.c mm: use proper type for cma_[alloc|release] 2021-05-05 11:27:24 -07:00
cma.h mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
compaction.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm/swapops: rework swap entry manipulation code 2021-07-01 11:06:03 -07:00
debug.c mm/debug: factor PagePoisoned out of __dump_page 2021-06-29 10:53:53 -07:00
dmapool.c mm/dmapool: use DEVICE_ATTR_RO macro 2021-06-29 10:53:52 -07:00
early_ioremap.c mm/early_ioremap.c: use __func__ instead of function name 2021-02-26 09:41:02 -08:00
fadvise.c mm, fadvise: improve the expensive remote LRU cache draining after FADV_DONTNEED 2020-10-13 18:38:29 -07:00
failslab.c
filemap.c mm: charge active memcg when no mm is set 2021-06-29 10:53:50 -07:00
frontswap.c mm/mempool: minor coding style tweaks 2021-05-05 11:27:27 -07:00
gup_test.c selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages 2021-05-05 11:27:26 -07:00
gup_test.h selftests/vm: gup_test: fix test flag 2021-05-05 11:27:26 -07:00
gup.c mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables 2021-06-30 20:47:30 -07:00
highmem.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
hmm.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
huge_memory.c mm/rmap: split migration into its own function 2021-07-01 11:06:03 -07:00
hugetlb_cgroup.c hugetlb: make free_huge_page irq safe 2021-05-05 11:27:22 -07:00
hugetlb_vmemmap.c mm: hugetlb: introduce CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON 2021-06-30 20:47:26 -07:00
hugetlb_vmemmap.h mm: hugetlb: introduce nr_free_vmemmap_pages in the struct hstate 2021-06-30 20:47:25 -07:00
hugetlb.c mm/swapops: rework swap entry manipulation code 2021-07-01 11:06:03 -07:00
hwpoison-inject.c mm,hwpoison-inject: don't pin for hwpoison_filter 2020-10-16 11:11:16 -07:00
init-mm.c mm/gup: prevent gup_fast from racing with COW during fork 2020-12-15 12:13:39 -08:00
internal.h mm/page_alloc: move prototype for find_suitable_fallback 2021-07-01 11:06:03 -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: fix iomap_max_page_shift 2021-05-14 19:41:32 -07:00
Kconfig mm: generalize ZONE_[DMA|DMA32] 2021-06-30 20:47:30 -07:00
Kconfig.debug mm, page_poison: remove CONFIG_PAGE_POISONING_ZERO 2020-12-15 12:13:46 -08:00
khugepaged.c mm, thp: relax the VM_DENYWRITE constraint on file-backed THPs 2021-06-30 20:47:29 -07:00
kmemleak.c mm/kmemleak: fix possible wrong memory scanning period 2021-06-29 10:53:47 -07:00
ksm.c mm/ksm: use vma_lookup() in find_mergeable_vma() 2021-06-29 10:53:52 -07:00
list_lru.c mm: vmscan: consolidate shrinker_maps handling code 2021-05-05 11:27:23 -07:00
maccess.c
madvise.c mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables 2021-06-30 20:47:30 -07:00
Makefile mm: hugetlb: free the vmemmap pages associated with each HugeTLB page 2021-06-30 20:47:25 -07:00
mapping_dirty_helpers.c mm/mapping_dirty_helpers: remove double Note in kerneldoc 2021-07-01 11:06:02 -07:00
memblock.c memblock: update initialization of reserved pages 2021-06-30 20:47:29 -07:00
memcontrol.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
memfd.c Reimplement RLIMIT_MEMLOCK on top of ucounts 2021-04-30 14:14:02 -05:00
memory_hotplug.c mm/memory_hotplug: fix kerneldoc comment for __remove_memory 2021-07-01 11:06:02 -07:00
memory-failure.c mm: fix spelling mistakes 2021-07-01 11:06:02 -07:00
memory.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
mempolicy.c mm/mempolicy: use unified 'nodes' for bind/interleave/prefer policies 2021-06-30 20:47:29 -07:00
mempool.c kasan: use separate (un)poison implementation for integrated init 2021-06-04 19:32:21 +01:00
memremap.c mm/memremap.c: fix improper SPDX comment style 2021-04-30 11:20:37 -07:00
memtest.c
migrate.c mm: rename migrate_pgmap_owner 2021-07-01 11:06:03 -07:00
mincore.c inode: make init and permission helpers idmapped mount aware 2021-01-24 14:27:16 +01:00
mlock.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
mm_init.c include/linux/page-flags-layout.h: cleanups 2021-04-30 11:20:42 -07:00
mmap_lock.c mm/mmap_lock: remove dead code for !CONFIG_TRACING configurations 2021-07-01 11:06:03 -07:00
mmap.c Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
mmu_gather.c mm: eliminate "expecting prototype" kernel-doc warnings 2021-04-16 16:10:36 -07:00
mmu_notifier.c mm/mmu_notifiers: ensure range_end() is paired with range_start() 2021-03-25 09:22:55 -07:00
mmzone.c mm/lru: replace pgdat lru_lock with lruvec lock 2020-12-15 14:48:04 -08:00
mprotect.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
mremap.c mm/mremap: use vma_lookup() in vma_to_resize() 2021-06-29 10:53:52 -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: unexport do_munmap() 2021-06-30 20:47:30 -07:00
oom_kill.c mm/mempolicy: cleanup nodemask intersection check for oom 2021-06-30 20:47:29 -07:00
page_alloc.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
page_counter.c mm: page_counter: mitigate consequences of a page_counter underflow 2021-04-30 11:20:38 -07:00
page_ext.c mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM 2021-06-29 10:53:55 -07:00
page_idle.c mm: page_idle_get_page() does not need lru_lock 2020-12-15 14:48:03 -08:00
page_io.c swap: fix swapfile read/write offset 2021-03-02 17:25:46 -07:00
page_isolation.c mm/page_isolation: do not isolate the max order page 2020-12-15 12:13:45 -08:00
page_owner.c mm/page_owner: constify dump_page_owner 2021-06-29 10:53:53 -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_vma_mapped.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
page-writeback.c for-5.14/block-2021-06-29 2021-06-30 12:12:56 -07:00
pagewalk.c mm: pagewalk: fix walk for hugepage tables 2021-06-29 10:53:49 -07:00
percpu-internal.h Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 2021-07-01 17:17:24 -07:00
percpu-km.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu-stats.c percpu: rework memcg accounting 2021-06-05 20:43:15 +00:00
percpu-vm.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
pgalloc-track.h mm: fix typos in comments 2021-05-07 00:26:35 -07:00
pgtable-generic.c mm/thp: fix __split_huge_pmd_locked() on shmem migration entry 2021-06-16 09:24:42 -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: ptdump: fix build failure 2021-04-16 16:10:37 -07:00
readahead.c mm: Implement readahead_control pageset expansion 2021-04-23 10:14:29 +01:00
rmap.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
rodata_test.c mm/rodata_test.c: fix missing function declaration 2020-08-21 09:52:53 -07:00
shmem.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -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_common.c mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches 2021-06-29 10:53:49 -07:00
slab.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
slab.h mm: memcg/slab: properly set up gfp flags for objcg pointer array 2021-06-29 10:53:49 -07:00
slob.c mm: Don't build mm_dump_obj() on CONFIG_PRINTK=n kernels 2021-03-08 14:18:46 -08:00
slub.c mm/slub: add taint after the errors are printed 2021-06-29 10:53:47 -07:00
sparse-vmemmap.c mm: sparsemem: split the huge PMD mapping of vmemmap pages 2021-06-30 20:47:26 -07:00
sparse.c mm: memory_hotplug: factor out bootmem core functions to bootmem_info.c 2021-06-30 20:47:25 -07:00
swap_cgroup.c
swap_slots.c mm/swap_slots.c: delete meaningless forward declarations 2021-06-29 10:53:49 -07:00
swap_state.c swap: check mapping_empty() for swap cache before being freed 2021-06-29 10:53:49 -07:00
swap.c mm: fix typos and grammar error in comments 2021-07-01 11:06:02 -07:00
swapfile.c mm: fix spelling mistakes 2021-07-01 11:06:02 -07:00
truncate.c mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page() 2021-06-16 09:24:42 -07:00
usercopy.c
userfaultfd.c userfaultfd/shmem: modify shmem_mfill_atomic_pte to use install_pte() 2021-06-30 20:47:27 -07:00
util.c mm: introduce page_offline_(begin|end|freeze|thaw) to synchronize setting PageOffline() 2021-06-30 20:47:28 -07:00
vmacache.c
vmalloc.c mm/vmalloc: include header for prototype of set_iounmap_nonlazy 2021-07-01 11:06:02 -07:00
vmpressure.c
vmscan.c mm/vmscan: remove kerneldoc-like comment from isolate_lru_pages 2021-07-01 11:06:02 -07:00
vmstat.c mm/vmstat: inline NUMA event counter updates 2021-06-29 10:53:54 -07:00
workingset.c mm: workingset: define macro WORKINGSET_SHIFT 2021-06-30 20:47:28 -07:00
z3fold.c mm/z3fold: add kerneldoc fields for z3fold_pool 2021-07-01 11:06:03 -07:00
zbud.c mm/zbud: add kerneldoc fields for zbud_pool 2021-07-01 11:06:03 -07:00
zpool.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
zsmalloc.c mm/zsmalloc.c: improve readability for async_free_zspage() 2021-07-01 11:06:02 -07:00
zswap.c mm/zswap.c: fix two bugs in zswap_writeback_entry() 2021-06-30 20:47:31 -07:00