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Michal Hocko cc81717ed3 mm: new_vma_page() cannot see NULL vma for hugetlb pages 
Commit 11c731e81bb0 ("mm/mempolicy: fix !vma in new_vma_page()") has
removed BUG_ON(!vma) from new_vma_page which is partially correct
because page_address_in_vma will return EFAULT for non-linear mappings
and at least shared shmem might be mapped this way.

The patch also tried to prevent NULL ptr for hugetlb pages which is not
correct AFAICS because hugetlb pages cannot be mapped as VM_NONLINEAR
and other conditions in page_address_in_vma seem to be legit and catch
real bugs.

This patch restores BUG_ON for PageHuge to catch potential issues when
the to-be-migrated page is not setup properly.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:52 -08:00
..
backing-dev.c
mm/backing-dev.c: check user buffer length before copying data to the related user buffer
2013-09-11 15:58:03 -07:00
balloon_compaction.c
mm: print more details for bad_page()
2014-01-23 16:36:50 -08:00
bootmem.c
mm/bootmem.c: remove unused local `map'
2013-11-13 12:09:09 +09:00
bounce.c
mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored
2013-09-30 14:31:02 -07:00
cleancache.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
compaction.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
debug-pagealloc.c
…
dmapool.c
dmapool: make DMAPOOL_DEBUG detect corruption of free marker
2012-12-11 17:22:24 -08:00
fadvise.c
teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long
2013-03-03 22:46:22 -05:00
failslab.c
switch debugfs to umode_t
2012-01-03 22:54:56 -05:00
filemap_xip.c
seqcount: Add lockdep functionality to seqcount/seqlock structures
2013-11-06 12:40:26 +01:00
filemap.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
fremap.c
mm: fix use-after-free in sys_remap_file_pages
2014-01-02 14:40:30 -08:00
frontswap.c
frontswap: fix incorrect zeroing and allocation size for frontswap_map
2013-06-12 16:29:46 -07:00
highmem.c
Some nice cleanups, and even a patch my wife did as a "live" demo for
2012-12-20 08:37:05 -08:00
huge_memory.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
hugetlb_cgroup.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
hugetlb.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
hwpoison-inject.c
mm/hwpoison: add '#' to hwpoison_inject
2014-01-21 16:19:48 -08:00
init-mm.c
…
internal.h
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
interval_tree.c
mm: add CONFIG_DEBUG_VM_RB build option
2012-10-09 16:22:42 +09:00
Kconfig
mm: add missing dependency in Kconfig
2013-12-18 19:04:52 -08:00
Kconfig.debug
mm: more intensive memory corruption debugging
2012-01-10 16:30:42 -08:00
kmemcheck.c
…
kmemleak-test.c
…
kmemleak.c
mm: kmemleak: avoid false negatives on vmalloc'ed objects
2013-11-13 12:09:07 +09:00
ksm.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
list_lru.c
mm: list_lru: fix almost infinite loop causing effective livelock
2013-10-30 12:57:46 -07:00
maccess.c
…
madvise.c
mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood
2013-09-30 14:31:02 -07:00
Makefile
list: add a new LRU list type
2013-09-10 18:56:30 -04:00
memblock.c
mm: free memblock.memory in free_all_bootmem
2014-01-23 16:36:51 -08:00
memcontrol.c
memcg: rework memcg_update_kmem_limit synchronization
2014-01-23 16:36:51 -08:00
memory_hotplug.c
mm: print more details for bad_page()
2014-01-23 16:36:50 -08:00
memory-failure.c
mm/memory-failure.c: shift page lock from head page to tail page after thp split
2014-01-23 16:36:52 -08:00
memory.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
mempolicy.c
mm: new_vma_page() cannot see NULL vma for hugetlb pages
2014-01-23 16:36:52 -08:00
mempool.c
mm/mempool.c: convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)
2013-09-11 15:58:14 -07:00
migrate.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
mincore.c
swap: make each swap partition have one address_space
2013-02-23 17:50:17 -08:00
mlock.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
mm_init.c
mm: numa: Change page last {nid,pid} into {cpu,pid}
2013-10-09 14:47:45 +02:00
mmap.c
mm/mmap.c: add mlock_future_check() helper
2014-01-21 16:19:44 -08:00
mmu_context.c
mm: remove old aio use_mm() comment
2013-05-07 18:38:27 -07:00
mmu_notifier.c
treewide: relase -> release
2013-06-28 14:34:33 +02:00
mmzone.c
mm: numa: Change page last {nid,pid} into {cpu,pid}
2013-10-09 14:47:45 +02:00
mprotect.c
mm: numa: do not automatically migrate KSM pages
2014-01-21 16:19:48 -08:00
mremap.c
mm: revert mremap pud_free anti-fix
2013-10-16 21:35:53 -07:00
msync.c
…
nobootmem.c
mm: free memblock.memory in free_all_bootmem
2014-01-23 16:36:51 -08:00
nommu.c
mm: add overcommit_kbytes sysctl variable
2014-01-21 16:19:44 -08:00
oom_kill.c
oom_kill: add rcu_read_lock() into find_lock_task_mm()
2014-01-21 16:19:46 -08:00
page_alloc.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
page_cgroup.c
Merge branch 'akpm' (incoming from Andrew)
2014-01-21 19:05:45 -08:00
page_io.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
page_isolation.c
mm: memory-hotplug: enable memory hotplug to handle hugepage
2013-09-11 15:57:48 -07:00
page-writeback.c
writeback: fix negative bdi max pause
2013-10-16 21:35:53 -07:00
pagewalk.c
mm/pagewalk.c: fix walk_page_range() access of wrong PTEs
2013-10-30 14:27:03 -07:00
percpu-km.c
…
percpu-vm.c
mm: fix kernel-doc warnings
2012-06-20 14:39:36 -07:00
percpu.c
Merge branch 'akpm' (incoming from Andrew)
2014-01-21 19:05:45 -08:00
pgtable-generic.c
mm: fix TLB flush race between migration, and change_protection_range
2013-12-18 19:04:51 -08:00
process_vm_access.c
Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys
2013-03-12 11:05:45 -07:00
quicklist.c
…
readahead.c
readahead: fix sequential read cache miss detection
2013-11-13 12:09:09 +09:00
rmap.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
shmem.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
slab_common.c
slab: do not panic if we fail to create memcg cache
2014-01-23 16:36:51 -08:00
slab.c
Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
2013-11-22 08:10:34 -08:00
slab.h
memcg, slab: RCU protect memcg_params for root caches
2014-01-23 16:36:51 -08:00
slob.c
mm/sl[aou]b: Move kmallocXXX functions to common code
2013-09-04 20:51:33 +03:00
slub.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
sparse-vmemmap.c
mm/sparse: use memblock apis for early memory allocations
2014-01-21 16:19:47 -08:00
sparse.c
mm/sparse: use memblock apis for early memory allocations
2014-01-21 16:19:47 -08:00
swap_state.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
swap.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
swapfile.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
truncate.c
truncate: drop 'oldsize' truncate_pagecache() parameter
2013-09-12 15:38:02 -07:00
util.c
mm: add overcommit_kbytes sysctl variable
2014-01-21 16:19:44 -08:00
vmalloc.c
mm/vmalloc: interchage the implementation of vmalloc_to_{pfn,page}
2014-01-21 16:19:44 -08:00
vmpressure.c
memcg: make cgroup_event deal with mem_cgroup instead of cgroup_subsys_state
2013-11-22 18:20:43 -05:00
vmscan.c
mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE
2014-01-23 16:36:50 -08:00
vmstat.c
mm: numa: return the number of base pages altered by protection changes
2013-11-13 12:09:11 +09:00
zbud.c
mm/zbud: fix some trivial typos in comments
2013-09-11 15:57:35 -07:00
zswap.c
mm/zswap.c: change params from hidden to ro
2014-01-23 16:36:50 -08:00