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linux/mm
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Waiman Long e68d343d27 mm/kmemleak: move up cond_resched() call in page scanning loop 
Commit bde5f6bc68 ("kmemleak: add scheduling point to kmemleak_scan()")
added a cond_resched() call to the struct page scanning loop to prevent
soft lockup from happening.  However, soft lockup can still happen in that
loop in some corner cases when the pages that satisfy the "!(pfn & 63)"
check are skipped for some reasons.

Fix this corner case by moving up the cond_resched() check so that it will
be called every 64 pages unconditionally.

Link: https://lkml.kernel.org/r/20230825164947.1317981-1-longman@redhat.com
Fixes: bde5f6bc68 ("kmemleak: add scheduling point to kmemleak_scan()")
Signed-off-by: Waiman Long <longman@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-09-02 15:17:34 -07:00
..
damon merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
kasan kasan, slub: fix HW_TAGS zeroing with slub_debug 2023-07-08 09:29:32 -07:00
kfence mm: kfence: allocate kfence_metadata at runtime 2023-08-18 10:12:39 -07:00
kmsan mm: kmsan: use helper macros PAGE_ALIGN and PAGE_ALIGN_DOWN 2023-08-21 13:37:29 -07:00
backing-dev.c writeback: remove redundant checks for root memcg 2023-08-21 13:37:48 -07:00
balloon_compaction.c
bootmem_info.c
cma.c mm: cma: print cma name as well in cma_alloc debug 2023-08-18 10:12:12 -07:00
cma.h
cma_debug.c
cma_sysfs.c
compaction.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
debug.c
debug_page_alloc.c
debug_page_ref.c
debug_vm_pgtable.c mm: change pudp_huge_get_and_clear_full take vm_area_struct as arg 2023-08-18 10:12:53 -07:00
dmapool.c
dmapool_test.c
early_ioremap.c
fadvise.c mm: remove unnecessary pagevec includes 2023-06-23 16:59:31 -07:00
fail_page_alloc.c
failslab.c
filemap.c filemap: batch PTE mappings 2023-08-24 16:20:26 -07:00
folio-compat.c
gup.c secretmem: convert page_is_secretmem() to folio_is_secretmem() 2023-08-24 16:20:31 -07:00
gup_test.c Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes. 2023-06-23 16:58:19 -07:00
gup_test.h
highmem.c
hmm.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
huge_memory.c mm/huge_memory: work on folio->swap instead of page->private when splitting folio 2023-08-24 16:20:28 -07:00
hugetlb.c hugetlb: add documentation for vma_kernel_pagesize() 2023-08-24 16:20:31 -07:00
hugetlb_cgroup.c
hugetlb_vmemmap.c mm: hugetlb_vmemmap: fix a race between vmemmap pmd split 2023-08-18 10:12:14 -07:00
hugetlb_vmemmap.h
hwpoison-inject.c
init-mm.c mm: move dummy_vm_ops out of a header 2023-08-21 13:37:46 -07:00
internal.h mm: free up a word in the first tail page 2023-08-21 14:28:45 -07:00
interval_tree.c
io-mapping.c
ioremap.c mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed 2023-08-18 10:12:36 -07:00
Kconfig mm/memory_hotplug: simplify ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE kconfig 2023-08-21 13:37:48 -07:00
Kconfig.debug
khugepaged.c mm/khugepaged: fix collapse_pte_mapped_thp() versus uffd 2023-08-24 16:20:15 -07:00
kmemleak.c mm/kmemleak: move up cond_resched() call in page scanning loop 2023-09-02 15:17:34 -07:00
ksm.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
list_lru.c
maccess.c
madvise.c swap: remove remnants of polling from read_swap_cache_async 2023-08-24 16:20:16 -07:00
Makefile mm: kill frontswap 2023-08-21 13:37:26 -07:00
mapping_dirty_helpers.c mm: fix clean_record_shared_mapping_range kernel-doc 2023-08-24 16:20:30 -07:00
memblock.c mm: disable kernelcore=mirror when no mirror memory 2023-08-21 13:37:43 -07:00
memcontrol.c mm: fix get_mctgt_type() kernel-doc 2023-08-24 16:20:30 -07:00
memfd.c memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy 2023-08-21 13:37:59 -07:00
memory-failure.c mm/hwpoison: rename hwp_walk* to hwpoison_walk* 2023-09-02 15:17:33 -07:00
memory-tiers.c memory tier: use helper macro __ATTR_RW() 2023-08-18 10:12:38 -07:00
memory.c mm: remove enum page_entry_size 2023-08-24 16:20:30 -07:00
memory_hotplug.c mm/memory_hotplug: embed vmem_altmap details in memory block 2023-08-21 13:37:49 -07:00
mempolicy.c mm: convert prep_transhuge_page() to folio_prep_large_rmappable() 2023-08-21 14:28:43 -07:00
mempool.c
memremap.c
memtest.c mm: memtest: convert to memtest_report_meminfo() 2023-08-21 13:37:47 -07:00
migrate.c migrate: use folio_set_bh() instead of set_bh_page() 2023-08-18 10:12:30 -07:00
migrate_device.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
mincore.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
mlock.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
mm_init.c mm/mm_init: use helper macro BITS_PER_LONG and BITS_PER_BYTE 2023-08-21 13:37:47 -07:00
mm_slot.h
mmap.c mm: move vma locking out of vma_prepare and dup_anon_vma 2023-08-21 13:37:46 -07:00
mmap_lock.c
mmu_gather.c mm: fix kernel-doc warning from tlb_flush_rmaps() 2023-08-24 16:20:30 -07:00
mmu_notifier.c mmu_notifiers: rename invalidate_range notifier 2023-08-18 10:12:41 -07:00
mmzone.c
mprotect.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
mremap.c mm/huge pud: use transparent huge pud helpers only with CONFIG_TRANSPARENT_HUGEPAGE 2023-08-18 10:12:54 -07:00
msync.c
nommu.c mm/nommu.c: use helper macro K() 2023-08-21 13:37:44 -07:00
oom_kill.c mm: remove redundant K() macro definition 2023-08-21 13:37:44 -07:00
page-writeback.c writeback: account the number of pages written back 2023-07-08 09:29:30 -07:00
page_alloc.c mm: page_alloc: remove stale CMA guard code 2023-09-02 15:17:34 -07:00
page_counter.c
page_ext.c mm/page_ext: move functions around for minor cleanups to page_ext 2023-08-18 10:12:31 -07:00
page_idle.c
page_io.c zswap: make zswap_load() take a folio 2023-08-21 13:37:27 -07:00
page_isolation.c mm/hugetlb: get rid of page_hstate() 2023-08-18 10:12:39 -07:00
page_owner.c mm/page_ext: use page_ext_data helper in page_owner 2023-08-21 13:37:27 -07:00
page_poison.c mm/page_poison: remove unused page_ext.h from page_poison 2023-08-21 13:37:30 -07:00
page_reporting.c
page_reporting.h
page_table_check.c mm: convert page_table_check_pte_set() to page_table_check_ptes_set() 2023-08-24 16:20:18 -07:00
page_vma_mapped.c mm: correct stale comment of function check_pte 2023-08-18 10:12:13 -07:00
pagewalk.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgalloc-track.h
pgtable-generic.c mm/pgtable: notes on pte_offset_map[_lock]() 2023-08-18 10:12:25 -07:00
process_vm_access.c
ptdump.c
readahead.c mm: remove unnecessary pagevec includes 2023-06-23 16:59:31 -07:00
rmap.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
rodata_test.c
secretmem.c mm/secretmem: use a folio in secretmem_fault() 2023-08-21 13:38:02 -07:00
shmem.c mm/swap: inline folio_set_swap_entry() and folio_swap_entry() 2023-08-24 16:20:28 -07:00
show_mem.c mm,thp: no space after colon in Mem-Info fields 2023-08-21 13:38:01 -07:00
shrinker_debug.c
shuffle.c
shuffle.h
slab.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
slab.h kasan, slub: fix HW_TAGS zeroing with slub_debug 2023-07-08 09:29:32 -07:00
slab_common.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
slub.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
sparse-vmemmap.c mm/vmemmap: allow architectures to override how vmemmap optimization works 2023-08-18 10:12:53 -07:00
sparse.c mm/sparse: remove redundant judgments from macro for_each_present_section_nr 2023-08-18 10:12:14 -07:00
swap.c mm: remove references to pagevec 2023-06-23 16:59:30 -07:00
swap.h swap: remove remnants of polling from read_swap_cache_async 2023-08-24 16:20:16 -07:00
swap_cgroup.c
swap_slots.c
swap_state.c mm/swap: inline folio_set_swap_entry() and folio_swap_entry() 2023-08-24 16:20:28 -07:00
swapfile.c mm/swap: inline folio_set_swap_entry() and folio_swap_entry() 2023-08-24 16:20:28 -07:00
truncate.c mm: merge folio_has_private()/filemap_release_folio() call pairs 2023-08-18 10:12:12 -07:00
usercopy.c
userfaultfd.c mm: userfaultfd: support UFFDIO_POISON for hugetlbfs 2023-08-18 10:12:17 -07:00
util.c mm/swap: inline folio_set_swap_entry() and folio_swap_entry() 2023-08-24 16:20:28 -07:00
vmalloc.c mm: add a call to flush_cache_vmap() in vmap_pfn() 2023-08-21 13:07:21 -07:00
vmpressure.c
vmscan.c mm/swap: inline folio_set_swap_entry() and folio_swap_entry() 2023-08-24 16:20:28 -07:00
vmstat.c mm/vmstat: remove unused page_ext.h from vmstat 2023-08-21 13:37:30 -07:00
workingset.c mm: memcg: use rstat for non-hierarchical stats 2023-08-24 16:20:18 -07:00
z3fold.c mm/z3fold: remove obsolete comment for struct z3fold_pool 2023-08-21 13:37:51 -07:00
zbud.c
zpool.c
zsmalloc.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
zswap.c mm/swap: inline folio_set_swap_entry() and folio_swap_entry() 2023-08-24 16:20:28 -07:00