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linux-stable/mm
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Kirill A. Shutemov 6b7339f4c3 mm: avoid setting up anonymous pages into file mapping 
Reading page fault handler code I've noticed that under right
circumstances kernel would map anonymous pages into file mappings: if
the VMA doesn't have vm_ops->fault() and the VMA wasn't fully populated
on ->mmap(), kernel would handle page fault to not populated pte with
do_anonymous_page().

Let's change page fault handler to use do_anonymous_page() only on
anonymous VMA (->vm_ops == NULL) and make sure that the VMA is not
shared.

For file mappings without vm_ops->fault() or shred VMA without vm_ops,
page fault on pte_none() entry would lead to SIGBUS.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Willy Tarreau <w@1wt.eu>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-07-09 11:12:48 -07:00
..
kasan
kasan: remove duplicate definition of the macro KASAN_FREE_PAGE
2015-06-25 17:00:42 -07:00
backing-dev.c
writeback: don't drain bdi_writeback_congested on bdi destruction
2015-07-02 08:46:00 -06:00
balloon_compaction.c
mm/balloon_compaction: fix deflation when compaction is disabled
2014-10-29 16:33:15 -07:00
bootmem.c
mm: page_alloc: pass PFN to __free_pages_bootmem
2015-06-30 19:44:55 -07:00
cleancache.c
cleancache: remove limit on the number of cleancache enabled filesystems
2015-04-14 16:49:03 -07:00
cma_debug.c
mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE()
2015-04-15 16:35:20 -07:00
cma.c
mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute
2015-06-24 17:49:44 -07:00
cma.h
mm: cma: allocation trigger
2015-04-14 16:49:00 -07:00
compaction.c
mm/compaction.c: fix "suitable_migration_target() unused" warning
2015-04-15 16:35:20 -07:00
debug-pagealloc.c
mm/debug-pagealloc: make debug-pagealloc boottime configurable
2014-12-13 12:42:48 -08:00
debug.c
tracing: Rename ftrace_event.h to trace_events.h
2015-05-13 14:05:12 -04:00
dmapool.c
mm/dmapool.c: fixed a brace coding style issue
2014-10-09 22:26:00 -04:00
early_ioremap.c
mm: create generic early_ioremap() support
2014-04-07 16:36:15 -07:00
fadvise.c
writeback: implement and use inode_congested()
2015-06-02 08:33:35 -06:00
failslab.c
switch debugfs to umode_t
2012-01-03 22:54:56 -05:00
filemap.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-07-04 19:36:06 -07:00
frontswap.c
frontswap: allow multiple backends
2015-06-24 17:49:45 -07:00
gup.c
mm: use READ_ONCE() for non-scalar types
2015-04-15 16:35:18 -07:00
highmem.c
mm/highmem: make kmap cache coloring aware
2014-08-06 18:01:22 -07:00
huge_memory.c
mm: clarify that the function operates on hugepage pte
2015-06-24 17:49:44 -07:00
hugetlb_cgroup.c
mm: page_counter: pull "-1" handling out of page_counter_memparse()
2015-02-11 17:06:02 -08:00
hugetlb.c
mm/hugetlb: remove unused arch hook prepare/release_hugepage
2015-06-25 17:00:35 -07:00
hwpoison-inject.c
mm/memory-failure: introduce get_hwpoison_page() for consistent refcount handling
2015-06-24 17:49:42 -07:00
init-mm.c
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
internal.h
mm: meminit: finish initialisation of struct pages before basic setup
2015-06-30 19:44:56 -07:00
interval_tree.c
mm: replace vma->sharead.linear with vma->shared
2015-02-10 14:30:31 -08:00
Kconfig
mm: meminit: initialise a subset of struct pages if CONFIG_DEFERRED_STRUCT_PAGE_INIT is set
2015-06-30 19:44:56 -07:00
Kconfig.debug
mm/debug_pagealloc: remove obsolete Kconfig options
2015-01-08 15:10:52 -08:00
kmemcheck.c
mm/slab_common: move kmem_cache definition to internal header
2014-10-09 22:25:50 -04:00
kmemleak-test.c
mm/kmemleak-test.c: use pr_fmt for logging
2014-06-06 16:08:18 -07:00
kmemleak.c
mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()
2015-06-24 17:49:46 -07:00
ksm.c
mm: remove rest of ACCESS_ONCE() usages
2015-04-15 16:35:18 -07:00
list_lru.c
memcg: reparent list_lrus and free kmemcg_id on css offline
2015-02-12 18:54:10 -08:00
maccess.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
madvise.c
writeback: separate out include/linux/backing-dev-defs.h
2015-06-02 08:33:34 -06:00
Makefile
mm: move memtest under mm
2015-04-14 16:49:06 -07:00
memblock.c
mm: page_alloc: pass PFN to __free_pages_bootmem
2015-06-30 19:44:55 -07:00
memcontrol.c
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
memory_hotplug.c
mm/memory hotplug: print the last vmemmap region at the end of hot add memory
2015-06-24 17:49:45 -07:00
memory-failure.c
tracing: add trace event for memory-failure
2015-06-24 17:49:43 -07:00
memory.c
mm: avoid setting up anonymous pages into file mapping
2015-07-09 11:12:48 -07:00
mempolicy.c
mm, thp: respect MPOL_PREFERRED policy with non-local node
2015-06-24 17:49:46 -07:00
mempool.c
mm/mempool.c: kasan: poison mempool elements
2015-04-15 16:35:20 -07:00
memtest.c
mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute
2015-06-24 17:49:44 -07:00
migrate.c
mm: clarify that the function operates on hugepage pte
2015-06-24 17:49:44 -07:00
mincore.c
mincore: apply page table walker on do_mincore()
2015-02-11 17:06:06 -08:00
mlock.c
mm: move mm_populate()-related code to mm/gup.c
2015-04-14 16:49:00 -07:00
mm_init.c
mm: meminit: remove mminit_verify_page_links
2015-06-30 19:44:56 -07:00
mmap.c
mm/mmap.c: optimization of do_mmap_pgoff function
2015-06-24 17:49:45 -07:00
mmu_context.c
sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm
2014-02-21 08:50:17 +01:00
mmu_notifier.c
mmu_notifier: add the callback for mmu_notifier_invalidate_range()
2014-11-13 13:46:09 +11:00
mmzone.c
mm: microoptimize zonelist operations
2015-02-11 17:06:02 -08:00
mprotect.c
mm: fix mprotect() behaviour on VM_LOCKED VMAs
2015-06-24 17:49:41 -07:00
mremap.c
mm: new arch_remap() hook
2015-06-24 17:49:41 -07:00
msync.c
mm: remove rest usage of VM_NONLINEAR and pte_file()
2015-02-10 14:30:31 -08:00
nobootmem.c
mm: page_alloc: pass PFN to __free_pages_bootmem
2015-06-30 19:44:55 -07:00
nommu.c
Replace module_init with appropriate alternate initcall in non modules.
2015-07-02 10:36:29 -07:00
oom_kill.c
mm/oom_kill.c: print points as unsigned int
2015-06-24 17:49:44 -07:00
page_alloc.c
mm: meminit: finish initialisation of struct pages before basic setup
2015-06-30 19:44:56 -07:00
page_counter.c
mm: page_counter: pull "-1" handling out of page_counter_memparse()
2015-02-11 17:06:02 -08:00
page_ext.c
mm/page_owner: keep track of page owners
2014-12-13 12:42:48 -08:00
page_io.c
suspend: simplify block I/O handling
2015-05-19 09:19:59 -06:00
page_isolation.c
CMA: page_isolation: check buddy before accessing it
2015-05-14 17:55:51 -07:00
page_owner.c
mm/page_owner.c: use late_initcall to hook in enabling
2015-06-16 14:12:35 -04:00
page-writeback.c
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
pagewalk.c
mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers
2015-03-25 16:20:30 -07:00
percpu-km.c
percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated
2014-09-02 14:46:05 -04:00
percpu-vm.c
percpu: move region iterations out of pcpu_[de]populate_chunk()
2014-09-02 14:46:02 -04:00
percpu.c
mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()
2015-06-24 17:49:46 -07:00
pgtable-generic.c
mm: clarify that the function operates on hugepage pte
2015-06-24 17:49:44 -07:00
process_vm_access.c
process_vm_access: switch to {compat_,}import_iovec()
2015-04-11 22:27:12 -04:00
quicklist.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
readahead.c
writeback: implement and use inode_congested()
2015-06-02 08:33:35 -06:00
rmap.c
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
shmem.c
tmpfs: truncate prealloc blocks past i_size
2015-06-24 17:49:45 -07:00
slab_common.c
Add __init attribute to new_kmalloc_cache
2015-07-01 14:22:33 -07:00
slab.c
slab: correct size_index table before replacing the bootstrap kmem_cache_node
2015-06-24 17:49:41 -07:00
slab.h
slab: correct size_index table before replacing the bootstrap kmem_cache_node
2015-06-24 17:49:41 -07:00
slob.c
slob: make slob_alloc_node() static and remove EXPORT_SYMBOL()
2015-04-14 16:48:59 -07:00
slub.c
slab: correct size_index table before replacing the bootstrap kmem_cache_node
2015-06-24 17:49:41 -07:00
sparse-vmemmap.c
mm/sparse: use memblock apis for early memory allocations
2014-01-21 16:19:47 -08:00
sparse.c
mm: use macros from compiler.h instead of __attribute__((...))
2014-04-07 16:35:54 -07:00
swap_cgroup.c
mm: page_cgroup: rename file to mm/swap_cgroup.c
2014-12-10 17:41:09 -08:00
swap_state.c
mm: remove rest of ACCESS_ONCE() usages
2015-04-15 16:35:18 -07:00
swap.c
mm: drop bogus VM_BUG_ON_PAGE assert in put_page() codepath
2015-06-24 17:49:42 -07:00
swapfile.c
vfs: add seq_file_path() helper
2015-06-23 18:01:07 -04:00
truncate.c
memcg: add per cgroup dirty page accounting
2015-06-02 08:33:33 -06:00
util.c
mm: uninline and cleanup page-mapping related helpers
2015-04-15 16:35:19 -07:00
vmacache.c
mm,vmacache: count number of system-wide flushes
2014-12-13 12:42:48 -08:00
vmalloc.c
mm/vmalloc: get rid of dirty bitmap inside vmap_block structure
2015-04-15 16:35:18 -07:00
vmpressure.c
mm/vmpressure.c: fix race in vmpressure_work_fn()
2014-12-02 17:32:07 -08:00
vmscan.c
mm: meminit: finish initialisation of struct pages before basic setup
2015-06-30 19:44:56 -07:00
vmstat.c
vmstat: Reduce time interval to stat update on idle cpu
2015-02-11 17:06:07 -08:00
workingset.c
list_lru: add helpers to isolate items
2015-02-12 18:54:10 -08:00
zbud.c
zpool: remove zpool_evict()
2015-06-25 17:00:37 -07:00
zpool.c
zpool: remove zpool_evict()
2015-06-25 17:00:37 -07:00
zsmalloc.c
zpool: remove zpool_evict()
2015-06-25 17:00:37 -07:00
zswap.c
zswap: runtime enable/disable
2015-06-25 17:00:37 -07:00