Andrea Arcangeli acf128d048 mm: validate_mm browse_rb SMP race condition ...

The mmap_sem for reading in validate_mm called from expand_stack is not
enough to prevent the argumented rbtree rb_subtree_gap information to
change from under us because expand_stack may be running from other
threads concurrently which will hold the mmap_sem for reading too.

The argumented rbtree is updated with vma_gap_update under the
page_table_lock so use it in browse_rb() too to avoid false positives.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2016-02-05 18:10:40 -08:00

..

kasan

UBSAN: run-time undefined behavior sanity checker

2016-01-20 17:09:18 -08:00

backing-dev.c

mm: memcontrol: export root_mem_cgroup

2016-01-14 16:00:49 -08:00

balloon_compaction.c

virtio_balloon: fix race between migration and ballooning

2016-01-12 20:47:06 +02:00

bootmem.c

x86/mm: Introduce max_possible_pfn

2015-12-06 12:46:31 +01:00

cleancache.c

cleancache: constify cleancache_ops structure

2016-01-27 09:09:57 -05:00

cma_debug.c

mm/cma_debug: correct size input to bitmap function

2015-07-17 16:39:54 -07:00

cma.c

mm/cma.c: suppress warning

2015-11-05 19:34:48 -08:00

cma.h

mm: cma: mark cma_bitmap_maxno() inline in header

2015-08-14 15:56:32 -07:00

compaction.c

mm/compaction.c: __compact_pgdat() code cleanuup

2016-01-14 16:00:49 -08:00

debug-pagealloc.c

…

debug.c

mm: rework mapcount accounting to enable 4k mapping of THPs

2016-01-15 17:56:32 -08:00

dmapool.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

early_ioremap.c

mm/early_ioremap: use offset_in_page macro

2015-11-05 19:34:48 -08:00

fadvise.c

writeback: implement and use inode_congested()

2015-06-02 08:33:35 -06:00

failslab.c

mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM

2015-11-06 17:50:42 -08:00

filemap.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-01-23 12:24:56 -08:00

frame_vector.c

mm: fix docbook comment for get_vaddr_frames()

2015-11-05 19:34:48 -08:00

frontswap.c

frontswap: allow multiple backends

2015-06-24 17:49:45 -07:00

gup.c

mm: retire GUP WARN_ON_ONCE that outlived its usefulness

2016-02-03 08:57:14 -08:00

highmem.c

…

huge_memory.c

mm: fix memory leak in copy_huge_pmd()

2016-02-03 08:28:43 -08:00

hugetlb_cgroup.c

mm: make compound_head() robust

2015-11-06 17:50:42 -08:00

hugetlb.c

mm: rework mapcount accounting to enable 4k mapping of THPs

2016-01-15 17:56:32 -08:00

hwpoison-inject.c

hwpoison: use page_cgroup_ino for filtering by memcg

2015-09-10 13:29:01 -07:00

init-mm.c

…

internal.h

mm: polish virtual memory accounting

2016-02-03 08:28:43 -08:00

interval_tree.c

mm: replace vma->sharead.linear with vma->shared

2015-02-10 14:30:31 -08:00

Kconfig

mm: re-enable THP

2016-01-15 17:56:32 -08:00

Kconfig.debug

…

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

Revert "gfp: add __GFP_NOACCOUNT"

2016-01-14 16:00:49 -08:00

ksm.c

mm/ksm.c: mark stable page dirty

2016-01-15 17:56:32 -08:00

list_lru.c

mm: memcontrol: move kmem accounting code to CONFIG_MEMCG

2016-01-20 17:09:18 -08:00

maccess.c

mm/maccess.c: actually return -EFAULT from strncpy_from_unsafe

2015-11-05 19:34:48 -08:00

madvise.c

mm/huge_memory.c: don't split THP page when MADV_FREE syscall is called

2016-01-15 17:56:32 -08:00

Makefile

media updates for v4.3-rc1

2015-09-11 16:42:39 -07:00

memblock.c

mm/memblock: introduce for_each_memblock_type()

2016-01-14 16:00:49 -08:00

memcontrol.c

thp: change pmd_trans_huge_lock() interface to return ptl

2016-01-21 17:20:51 -08:00

memory_hotplug.c

x86, mm: introduce vmem_altmap to augment vmemmap_populate()

2016-01-15 17:56:32 -08:00

memory-failure.c

mm: soft-offline: exit with failure for non anonymous thp

2016-01-15 17:56:32 -08:00

memory.c

mm: retire GUP WARN_ON_ONCE that outlived its usefulness

2016-02-03 08:57:14 -08:00

mempolicy.c

mm: mempolicy: skip non-migratable VMAs when setting MPOL_MF_LAZY

2016-01-15 17:56:32 -08:00

mempool.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

memtest.c

memtest: remove unused header files

2015-09-08 15:35:28 -07:00

migrate.c

thp: introduce deferred_split_huge_page()

2016-01-15 17:56:32 -08:00

mincore.c

thp: change pmd_trans_huge_lock() interface to return ptl

2016-01-21 17:20:51 -08:00

mlock.c

mm: fix mlock accouting

2016-01-21 17:20:51 -08:00

mm_init.c

mm: meminit: remove mminit_verify_page_links

2015-06-30 19:44:56 -07:00

mmap.c

mm: validate_mm browse_rb SMP race condition

2016-02-05 18:10:40 -08:00

mmu_context.c

…

mmu_notifier.c

mmu-notifier: add clear_young callback

2015-09-10 13:29:01 -07:00

mmzone.c

mm/mmzone.c: memmap_valid_within() can be boolean

2016-01-14 16:00:49 -08:00

mprotect.c

mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd

2016-01-15 17:56:32 -08:00

mremap.c

mm, thp: remove infrastructure for handling splitting PMDs

2016-01-15 17:56:32 -08:00

msync.c

mm/msync: use offset_in_page macro

2015-11-05 19:34:48 -08:00

nobootmem.c

x86/mm: Introduce max_possible_pfn

2015-12-06 12:46:31 +01:00

nommu.c

kmemcg: account certain kmem allocations to memcg

2016-01-14 16:00:49 -08:00

oom_kill.c

mm, shmem: add internal shmem resident memory accounting

2016-01-14 16:00:49 -08:00

page_alloc.c

thp: make split_queue per-node

2016-02-03 08:28:43 -08:00

page_counter.c

mm: page_counter: let page_counter_try_charge() return bool

2015-11-05 19:34:48 -08:00

page_ext.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

page_idle.c

mm: add page_check_address_transhuge() helper

2016-01-15 17:56:32 -08:00

page_io.c

fs: use helper bio_add_page() instead of open coding on bi_io_vec

2015-08-13 12:32:00 -06:00

page_isolation.c

mm/page_isolation: do some cleanup in "undo_isolate_page_range"

2016-01-15 17:56:32 -08:00

page_owner.c

mm/page_owner: set correct gfp_mask on page_owner

2015-07-17 16:39:54 -07:00

page-writeback.c

mm: page_alloc: generalize the dirty balance reserve

2016-01-14 16:00:49 -08:00

pagewalk.c

thp: rename split_huge_page_pmd() to split_huge_pmd()

2016-01-15 17:56:32 -08:00

percpu-km.c

…

percpu-vm.c

…

percpu.c

tree wide: use kvfree() than conditional kfree()/vfree()

2016-01-22 17:02:18 -08:00

pgtable-generic.c

mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd

2016-01-15 17:56:32 -08:00

process_vm_access.c

ptrace: use fsuid, fsgid, effective creds for fs access checks

2016-01-20 17:09:18 -08:00

quicklist.c

…

readahead.c

mm: move lru_to_page to mm_inline.h

2016-01-14 16:00:49 -08:00

rmap.c

mm: fix locking order in mm_take_all_locks()

2016-01-15 17:56:32 -08:00

shmem.c

make sure that freeing shmem fast symlinks is RCU-delayed

2016-01-22 18:08:52 -05:00

slab_common.c

mm: memcontrol: move kmem accounting code to CONFIG_MEMCG

2016-01-20 17:09:18 -08:00

slab.c

mm/slab.c: add a helper function get_first_slab

2016-01-14 16:00:49 -08:00

slab.h

mm: memcontrol: move kmem accounting code to CONFIG_MEMCG

2016-01-20 17:09:18 -08:00

slob.c

slab/slub: adjust kmem_cache_alloc_bulk API

2015-11-22 11:58:44 -08:00

slub.c

mm: memcontrol: move kmem accounting code to CONFIG_MEMCG

2016-01-20 17:09:18 -08:00

sparse-vmemmap.c

x86, mm: introduce vmem_altmap to augment vmemmap_populate()

2016-01-15 17:56:32 -08:00

sparse.c

x86, mm: introduce vmem_altmap to augment vmemmap_populate()

2016-01-15 17:56:32 -08:00

swap_cgroup.c

…

swap_state.c

mm: memcontrol: charge swap to cgroup2

2016-01-20 17:09:18 -08:00

swap.c

mm, x86: get_user_pages() for dax mappings

2016-01-15 17:56:32 -08:00

swapfile.c

wrappers for ->i_mutex access

2016-01-22 18:04:28 -05:00

truncate.c

dax: support dirty DAX entries in radix tree

2016-01-22 17:02:18 -08:00

userfaultfd.c

memcg: adjust to support new THP refcounting

2016-01-15 17:56:32 -08:00

util.c

proc: revert /proc/<pid>/maps [stack:TID] annotation

2016-02-03 08:28:43 -08:00

vmacache.c

mm/vmacache: inline vmacache_valid_mm()

2015-11-05 19:34:48 -08:00

vmalloc.c

mm/vmalloc.c: use macro IS_ALIGNED to judge the aligment

2016-01-15 17:56:32 -08:00

vmpressure.c

mm/vmpressure.c: fix subtree pressure detection

2016-02-03 08:28:43 -08:00

vmscan.c

dax: support dirty DAX entries in radix tree

2016-01-22 17:02:18 -08:00

vmstat.c

vmstat: Remove BUG_ON from vmstat_update

2016-01-24 08:55:52 -08:00

workingset.c

dax: support dirty DAX entries in radix tree

2016-01-22 17:02:18 -08:00

zbud.c

mm/zbud.c: use list_last_entry() instead of list_tail_entry()

2016-01-15 11:40:52 -08:00

zpool.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zsmalloc.c

zsmalloc: fix migrate_zspage-zs_free race condition

2016-01-20 17:09:18 -08:00

zswap.c

mm/zswap: change incorrect strncmp use to strcmp

2015-12-18 14:25:40 -08:00