Mike Kravetz e32905e573 userfaultfd: hugetlbfs: fix new flag usage in error path ... In commit d6995da311 ("hugetlb: use page.private for hugetlb specific page flags") the use of PagePrivate to indicate a reservation count should be restored at free time was changed to the hugetlb specific flag HPageRestoreReserve. Changes to a userfaultfd error path as well as a VM_BUG_ON() in remove_inode_hugepages() were overlooked. Users could see incorrect hugetlb reserve counts if they experience an error with a UFFDIO_COPY operation. Specifically, this would be the result of an unlikely copy_huge_page_from_user error. There is not an increased chance of hitting the VM_BUG_ON. Link: https://lkml.kernel.org/r/20210521233952.236434-1-mike.kravetz@oracle.com Fixes: d6995da311 ("hugetlb: use page.private for hugetlb specific page flags") Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: Mina Almasry <almasry.mina@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: David Hildenbrand <david@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Mina Almasry <almasrymina@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-05-22 15:09:07 -10:00
..
kasan	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
kfence	mm: fix typos in comments	2021-05-07 00:26:35 -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	Driver Core and debugfs changes for 5.3-rc1	2019-07-12 12:24:03 -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
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	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
debug_page_ref.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
debug_vm_pgtable.c	mm: HUGE_VMAP arch support cleanup	2021-04-30 11:20:40 -07:00
debug.c	mm/debug: improve memcg debugging	2021-02-24 13:38:27 -08:00
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	mm/failslab.c: by default, do not fail allocations with direct reclaim only	2019-07-12 11:05:43 -07:00
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_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	Revert "mm/gup: check page posion status for coredump."	2021-05-22 15:09:07 -10:00
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: fix typos in comments	2021-05-07 00:26:35 -07:00
hugetlb_cgroup.c	hugetlb: make free_huge_page irq safe	2021-05-05 11:27:22 -07:00
hugetlb.c	mm/hugetlb: fix cow where page writtable in child	2021-05-14 19:41:32 -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	Revert "mm/gup: check page posion status for coredump."	2021-05-22 15:09:07 -10:00
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	mm: page cache: store only head pages in i_pages	2019-09-24 15:54:08 -07:00
memory_hotplug.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
memory-failure.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
memory.c	mm: fix typos in comments	2021-05-07 00:26:35 -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	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
migrate.c	mm: fix typos in comments	2021-05-07 00:26:35 -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_lock.c	mm: mmap_lock: add tracepoints around lock acquisition	2020-12-15 12:13:41 -08:00
mmap.c	mm: fix typos in comments	2021-05-07 00:26:35 -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: 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_alloc.c	mm: fix typos in comments	2021-05-07 00:26:35 -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	mm: introduce include/linux/pgtable.h	2020-06-09 09:39:13 -07:00
page_vma_mapped.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
pagewalk.c	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
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/pgtable-generic.c: optimize the VM_BUG_ON condition in pmdp_huge_clear_flush()	2021-02-24 13:38:30 -08:00
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: fix some typos and code style problems	2021-05-07 00:26:33 -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_common.c	mm, slub: move slub_debug static key enabling outside slab_mutex	2021-05-14 19:41:32 -07:00
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
slob.c	mm: Don't build mm_dump_obj() on CONFIG_PRINTK=n kernels	2021-03-08 14:18:46 -08:00
slub.c	kasan: slab: always reset the tag in get_freepointer_safe()	2021-05-22 15:09:07 -10:00
sparse-vmemmap.c	mm/sparse: only sub-section aligned range would be populated	2020-08-07 11:33:27 -07:00
sparse.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
swap_cgroup.c	mm: memcontrol: make swap tracking an integral part of memory control	2020-06-03 20:09:48 -07:00
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
swap.c	mm: fix some typos and code style problems	2021-05-07 00:26:33 -07:00
swapfile.c	mm/mempool: minor coding style tweaks	2021-05-05 11:27:27 -07:00
truncate.c	mm: stop accounting shadow entries	2021-05-05 11:27:19 -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	kernel: better document the use_mm/unuse_mm API contract	2020-06-10 19:14:18 -07:00
vmalloc.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
vmpressure.c	mm: vmpressure: use mem_cgroup_is_root API	2020-04-02 09:35:31 -07:00
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