Piteball
/
android_kernel_samsung_msm8976
mirror of https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
1
1
Fork 0
Code Issues Projects Releases Wiki Activity
android_kernel_samsung_msm8976/mm
History
Kirill A. Shutemov efcbc94afe mm: avoid setting up anonymous pages into file mapping 
commit 6b7339f4c31ad69c8e9c0b2859276e22cf72176d upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2015-08-10 12:20:29 -07:00
..
Kconfig mmKconfig: add an option to disable bounce 2013-04-29 15:54:40 -07:00
Kconfig.debug
…
Makefile memcg: add memory.pressure_level events 2013-04-29 15:54:38 -07:00
backing-dev.c bdi: avoid oops on device removal 2014-04-26 17:15:35 -07:00
balloon_compaction.c
…
bootmem.c mm: Add alloc_bootmem_low_pages_nopanic() 2013-01-29 19:32:59 -08:00
bounce.c mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored 2013-10-13 16:08:33 -07:00
cleancache.c mm: cleancache: clean up cleancache_enabled 2013-04-30 17:04:01 -07:00
compaction.c mm/compaction: fix wrong order check in compact_finished() 2015-03-18 13:22:28 +01:00
debug-pagealloc.c
…
dmapool.c
…
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
…
filemap.c mm: memcg: handle non-error OOM situations more gracefully 2014-11-21 09:22:56 -08:00
filemap_xip.c lift sb_start_write() out of ->write() 2013-04-09 14:12:56 -04:00
fremap.c mm: fix use-after-free in sys_remap_file_pages 2014-01-09 12:24:24 -08:00
frontswap.c mm: frontswap: invalidate expired data on a dup-store failure 2014-12-16 09:09:41 -08:00
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: numa: Do not mark PTEs pte_numa when splitting huge pages 2014-10-09 12:18:42 -07:00
hugetlb.c mm/hugetlb: add migration entry check in __unmap_hugepage_range 2015-03-18 13:22:27 +01:00
hugetlb_cgroup.c mm/hugetlb: create hugetlb cgroup file in hugetlb_init 2012-12-18 15:02:15 -08:00
hwpoison-inject.c
…
init-mm.c
…
internal.h mm: accelerate munlock() treatment of THP pages 2013-02-27 19:10:09 -08:00
interval_tree.c
…
kmemcheck.c
…
kmemleak-test.c
…
kmemleak.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
ksm.c vm: add VM_FAULT_SIGSEGV handling support 2015-04-29 10:34:00 +02:00
maccess.c
…
madvise.c mm: madvise: complete input validation before taking lock 2013-04-29 15:54:37 -07:00
memblock.c memblock: fix missing comment of memblock_insert_region() 2013-04-29 15:54:38 -07:00
memcontrol.c mm: memcg: handle non-error OOM situations more gracefully 2014-11-21 09:22:56 -08:00
memory-failure.c mm/memory-failure: call shake_page() when error hits thp tail page 2015-05-17 09:51:32 -07:00
memory.c mm: avoid setting up anonymous pages into file mapping 2015-08-10 12:20:29 -07:00
memory_hotplug.c mm/memory_hotplug.c: set zone->wait_table to null after freeing it 2015-06-22 16:55:54 -07:00
mempolicy.c cpuset,mempolicy: fix sleeping function called from invalid context 2014-07-17 15:58:00 -07:00
mempool.c
…
migrate.c mm: numa: avoid unnecessary work on the failure path 2014-01-09 12:24:23 -08:00
mincore.c swap: make each swap partition have one address_space 2013-02-23 17:50:17 -08:00
mlock.c mm: try_to_unmap_cluster() should lock_page() before mlocking 2014-05-06 07:55:32 -07:00
mm_init.c mm: init: report on last-nid information stored in page->flags 2013-02-23 17:50:18 -08:00
mmap.c mm/mmap.c: fix arithmetic overflow in __vm_enough_memory() 2015-03-18 13:22:27 +01:00
mmu_context.c mm: remove old aio use_mm() comment 2013-05-07 18:38:27 -07:00
mmu_notifier.c mm: mmu_notifier: re-fix freed page still mapped in secondary MMU 2013-05-24 16:22:51 -07:00
mmzone.c mm: rename page struct field helpers 2013-02-23 17:50:18 -08:00
mprotect.c mm: fix TLB flush race between migration, and change_protection_range 2014-01-09 12:24:23 -08:00
mremap.c mm, thp: close race between mremap() and split_huge_page() 2014-06-07 13:25:31 -07:00
msync.c
…
nobootmem.c mm, nobootmem: do memset() after memblock_reserve() 2013-04-29 15:54:39 -07:00
nommu.c mm/nommu.c: fix arithmetic overflow in __vm_enough_memory() 2015-03-18 13:22:28 +01:00
oom_kill.c mm: memcg: handle non-error OOM situations more gracefully 2014-11-21 09:22:56 -08:00
page-writeback.c writeback: fix possible underflow in write bandwidth calculation 2015-04-19 10:10:48 +02:00
page_alloc.c OOM, PM: OOM killed task shouldn't escape PM suspend 2014-11-14 08:47:58 -08:00
page_cgroup.c cgroup/kmemleak: add kmemleak_free() for cgroup deallocations. 2014-11-14 08:47:59 -08:00
page_io.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
page_isolation.c mm: fix zone_watermark_ok_safe() accounting of isolated pages 2013-01-04 16:11:46 -08:00
pagewalk.c mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range 2015-02-11 14:48:16 +08:00
percpu-km.c
…
percpu-vm.c percpu: perform tlb flush after pcpu_map_pages() failure 2014-10-05 14:54:13 -07:00
percpu.c Revert "percpu: free percpu allocation info for uniprocessor system" 2014-11-14 08:47:53 -08:00
pgtable-generic.c mm: fix TLB flush race between migration, and change_protection_range 2014-01-09 12:24:23 -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 teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long 2013-03-03 22:46:22 -05:00
rmap.c mm: fix sleeping function warning from __put_anon_vma 2014-06-30 20:09:42 -07:00
shmem.c shmem: fix nlink for rename overwrite directory 2014-10-05 14:54:11 -07:00
slab.c slab: fix init_lock_keys 2013-07-21 18:21:26 -07:00
slab.h memcg: check that kmem_cache has memcg_params before accessing it 2013-09-07 22:09:58 -07:00
slab_common.c slab_common: fix the check for duplicate slab names 2014-07-31 12:53:50 -07:00
slob.c mm: rename page struct field helpers 2013-02-23 17:50:18 -08:00
slub.c slub: Fix calculation of cpu slabs 2014-02-13 13:48:00 -08:00
sparse-vmemmap.c sparse-vmemmap: specify vmemmap population range in bytes 2013-04-29 15:54:35 -07:00
sparse.c mm, hotplug: avoid compiling memory hotremove functions when disabled 2013-04-29 15:54:37 -07:00
swap.c mm: close PageTail race 2014-04-03 12:01:05 -07:00
swap_state.c swap: avoid read_swap_cache_async() race to deadlock while waiting on discard I/O completion 2013-06-12 16:29:45 -07:00
swapfile.c frontswap: fix incorrect zeroing and allocation size for frontswap_map 2013-06-12 16:29:46 -07:00
truncate.c mm: Remove false WARN_ON from pagecache_isize_extended() 2014-11-14 08:48:00 -08:00
util.c vm_is_stack: use for_each_thread() rather then buggy while_each_thread() 2014-10-05 14:54:16 -07:00
vmalloc.c mm/vmalloc.c: fix an overflow bug in alloc_vmap_area() 2013-11-13 12:05:34 +09:00
vmpressure.c memcg: add memory.pressure_level events 2013-04-29 15:54:38 -07:00
vmscan.c mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed 2015-01-16 06:59:03 -08:00
vmstat.c mm: numa: return the number of base pages altered by protection changes 2013-12-08 07:29:27 -08:00