Mel Gorman ff4b2b4014 mm/page_alloc: correct return value of populated elements if bulk array is populated ... Dave Jones reported the following This made it into 5.13 final, and completely breaks NFSD for me (Serving tcp v3 mounts). Existing mounts on clients hang, as do new mounts from new clients. Rebooting the server back to rc7 everything recovers. The commit b3b64ebd38 ("mm/page_alloc: do bulk array bounds check after checking populated elements") returns the wrong value if the array is already populated which is interpreted as an allocation failure. Dave reported this fixes his problem and it also passed a test running dbench over NFS. Link: https://lkml.kernel.org/r/20210628150219.GC3840@techsingularity.net Fixes: b3b64ebd38 ("mm/page_alloc: do bulk array bounds check after checking populated elements") Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Reported-by: Dave Jones <davej@codemonkey.org.uk> Tested-by: Dave Jones <davej@codemonkey.org.uk> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: <stable@vger.kernel.org> [5.13+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-06-29 10:53:45 -07:00
..
kasan	mm/kasan/init.c: fix doc warning	2021-06-05 08:58:11 -07:00
kfence	kfence: use TASK_IDLE when awaiting allocation	2021-06-05 08:58:11 -07:00
backing-dev.c	mm/backing-dev.c: use might_alloc()	2021-02-26 09:41:01 -08:00
balloon_compaction.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
cleancache.c
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
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
compaction.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
debug.c	mm/debug: improve memcg debugging	2021-02-24 13:38:27 -08:00
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: fix alignment for pmd/pud_advanced_tests()	2021-06-05 08:58:11 -07:00
dmapool.c	mm/dmapool: switch from strlcpy to strscpy	2021-04-30 11:20:39 -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: fix typos in comments	2021-05-07 00:26:35 -07:00
frontswap.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
gup.c	mm/gup: fix try_grab_compound_head() race with split_huge_page()	2021-06-29 10:53:45 -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
highmem.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
hmm.c	mm: do page fault accounting in handle_mm_fault	2020-08-12 10:58:02 -07:00
huge_memory.c	mm: thp: replace DEBUG_VM BUG with VM_WARN when unmap fails for split	2021-06-16 09:24:42 -07:00
hugetlb.c	mm, futex: fix shared futex pgoff on shmem huge page	2021-06-24 19:40:54 -07:00
hugetlb_cgroup.c	hugetlb: make free_huge_page irq safe	2021-05-05 11:27:22 -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/thp: fix vma_address() if virtual address below file offset	2021-06-16 09:24:42 -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,memory_hotplug: allocate memmap from the added memory range	2021-05-05 11:27:26 -07:00
Kconfig.debug	mm, page_poison: remove CONFIG_PAGE_POISONING_ZERO	2020-12-15 12:13:46 -08:00
khugepaged.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
kmemleak.c	mm/kmemleak.c: fix a typo	2021-04-30 11:20:36 -07:00
ksm.c	ksm: revert "use GET_KSM_PAGE_NOLOCK to get ksm page in remove_rmap_item_from_tree()"	2021-05-14 19:41:32 -07:00
list_lru.c	mm: vmscan: consolidate shrinker_maps handling code	2021-05-05 11:27:23 -07:00
maccess.c	uaccess: add force_uaccess_{begin,end} helpers	2020-08-12 10:57:59 -07:00
madvise.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
Makefile	mm,memory_hotplug: add kernel boot option to enable memmap_on_memory	2021-05-05 11:27:27 -07:00
mapping_dirty_helpers.c	mm/mapping_dirty_helpers: guard hugepage pud's usage	2021-04-16 16:10:37 -07:00
memblock.c	memblock: remove return value of memblock_free_all()	2021-02-22 13:01:23 -08:00
memcontrol.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
memfd.c
memory-failure.c	mm/hwpoison: do not lock page again when me_huge_page() successfully recovers	2021-06-24 19:40:54 -07:00
memory.c	mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page()	2021-06-16 09:24:42 -07:00
memory_hotplug.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
mempolicy.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
mempool.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
memremap.c	mm/memremap.c: fix improper SPDX comment style	2021-04-30 11:20:37 -07:00
memtest.c
migrate.c	mm, thp: use head page in __migration_entry_wait()	2021-06-16 09:24:42 -07:00
mincore.c	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
mlock.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
mm_init.c	include/linux/page-flags-layout.h: cleanups	2021-04-30 11:20:42 -07:00
mmap.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
mmap_lock.c	mm: mmap_lock: add tracepoints around lock acquisition	2020-12-15 12:13:41 -08:00
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: fix typos in comments	2021-05-07 00:26:35 -07:00
mremap.c	mm: fix typos in comments	2021-05-07 00:26:35 -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/vmalloc: remove vwrite()	2021-05-07 00:26:34 -07:00
oom_kill.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
page-writeback.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
page_alloc.c	mm/page_alloc: correct return value of populated elements if bulk array is populated	2021-06-29 10:53:45 -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: fix some spelling mistakes in comments	2020-12-15 22:46:19 -08:00
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: fix typos in comments	2021-05-07 00:26:35 -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: use list_entry_is_head() in page_reporting_cycle()	2021-02-24 13:38:30 -08:00
page_reporting.h
page_vma_mapped.c	mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk()	2021-06-24 19:40:53 -07:00
pagewalk.c
percpu-internal.h	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
percpu-km.c	mm: memcg/percpu: account percpu memory to memory cgroups	2020-08-12 10:57:55 -07:00
percpu-stats.c	percpu: make pcpu_nr_empty_pop_pages per chunk type	2021-04-09 13:58:38 +00:00
percpu-vm.c	mm/vmalloc: remove unmap_kernel_range	2021-04-30 11:20:40 -07:00
percpu.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
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/thp: fix page_address_in_vma() on file THP tails	2021-06-16 09:24:42 -07:00
rodata_test.c	mm/rodata_test.c: fix missing function declaration	2020-08-21 09:52:53 -07:00
shmem.c	userfaultfd: release page in error path to avoid BUG_ON	2021-05-14 19:41:32 -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	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
slab.h	kasan, mm: integrate slab init_on_alloc with HW_TAGS	2021-04-30 11:20:41 -07:00
slab_common.c	mm/slub: fix redzoning for small allocations	2021-06-16 09:24:42 -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.c: include swab.h	2021-06-16 09:24:42 -07:00
sparse-vmemmap.c	mm/sparse: only sub-section aligned range would be populated	2020-08-07 11:33:27 -07:00
sparse.c	mm/sparse: fix check_usemap_section_nr warnings	2021-06-16 09:24:43 -07:00
swap.c	mm: fix some typos and code style problems	2021-05-07 00:26:33 -07:00
swap_cgroup.c
swap_slots.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
swap_state.c	mm: fix some typos and code style problems	2021-05-07 00:26:33 -07:00
swapfile.c	mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare	2021-06-16 09:24:42 -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	mm/usercopy.c: delete duplicated word	2020-08-12 10:57:58 -07:00
userfaultfd.c	userfaultfd: hugetlbfs: fix new flag usage in error path	2021-05-22 15:09:07 -10:00
util.c	mm/util.c: fix typo	2021-05-05 11:27:25 -07:00
vmacache.c
vmalloc.c	mm/vmalloc: unbreak kasan vmalloc support	2021-06-24 19:40:54 -07:00
vmpressure.c
vmscan.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
vmstat.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
workingset.c	mm: stop accounting shadow entries	2021-05-05 11:27:19 -07:00
z3fold.c	mm: fix some typos and code style problems	2021-05-07 00:26:33 -07:00
zbud.c	mm: set the sleep_mapped to true for zbud and z3fold	2021-02-26 09:41:01 -08:00
zpool.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
zsmalloc.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
zswap.c	mm/zswap.c: switch from strlcpy to strscpy	2021-05-05 11:27:27 -07:00