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
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	…
Makefile	…
backing-dev.c	writeback: don't drain bdi_writeback_congested on bdi destruction	2015-07-02 08:46:00 -06:00
balloon_compaction.c	…
bootmem.c	mm: page_alloc: pass PFN to __free_pages_bootmem	2015-06-30 19:44:55 -07:00
cleancache.c	…
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	…
cma_debug.c	…
compaction.c	…
debug-pagealloc.c	…
debug.c	…
dmapool.c	…
early_ioremap.c	…
fadvise.c	…
failslab.c	…
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	…
highmem.c	…
huge_memory.c	mm: clarify that the function operates on hugepage pte	2015-06-24 17:49:44 -07:00
hugetlb.c	mm/hugetlb: remove unused arch hook prepare/release_hugepage	2015-06-25 17:00:35 -07:00
hugetlb_cgroup.c	…
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	…
internal.h	mm: meminit: finish initialisation of struct pages before basic setup	2015-06-30 19:44:56 -07:00
interval_tree.c	…
kmemcheck.c	…
kmemleak-test.c	…
kmemleak.c	mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()	2015-06-24 17:49:46 -07:00
ksm.c	…
list_lru.c	…
maccess.c	…
madvise.c	…
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-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
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
mempolicy.c	mm, thp: respect MPOL_PREFERRED policy with non-local node	2015-06-24 17:49:46 -07:00
mempool.c	…
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	…
mlock.c	…
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	…
mmu_notifier.c	…
mmzone.c	…
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	…
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-writeback.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	2015-06-25 16:00:17 -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	…
page_ext.c	…
page_io.c	…
page_isolation.c	…
page_owner.c	mm/page_owner.c: use late_initcall to hook in enabling	2015-06-16 14:12:35 -04:00
pagewalk.c	…
percpu-km.c	…
percpu-vm.c	…
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	…
quicklist.c	…
readahead.c	…
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.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
slab_common.c	Add __init attribute to new_kmalloc_cache	2015-07-01 14:22:33 -07:00
slob.c	…
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	…
sparse.c	…
swap.c	mm: drop bogus VM_BUG_ON_PAGE assert in put_page() codepath	2015-06-24 17:49:42 -07:00
swap_cgroup.c	…
swap_state.c	…
swapfile.c	vfs: add seq_file_path() helper	2015-06-23 18:01:07 -04:00
truncate.c	…
util.c	…
vmacache.c	…
vmalloc.c	…
vmpressure.c	…
vmscan.c	mm: meminit: finish initialisation of struct pages before basic setup	2015-06-30 19:44:56 -07:00
vmstat.c	…
workingset.c	…
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