Grazvydas Ignotas 601391cbb6 mm/memory.c: actually remap enough memory ... commit 9cb12d7b4ccaa976f97ce0c5fd0f1b6a83bc2a75 upstream. For whatever reason, generic_access_phys() only remaps one page, but actually allows to access arbitrary size. It's quite easy to trigger large reads, like printing out large structure with gdb, which leads to a crash. Fix it by remapping correct size. Fixes: 28b2ee20c7 ("access_process_vm device memory infrastructure") Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Zefan Li <lizefan@huawei.com>		2015-06-19 11:40:16 +08:00
..
backing-dev.c	backing-dev: fix wakeup timer races with bdi_unregister()	2012-02-01 16:52:49 +08:00
bootmem.c	mm: sparse: fix usemap allocation above node descriptor section	2012-10-02 10:30:36 -07:00
bounce.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
cleancache.c	mm: cleancache: Use __read_mostly as appropiate.	2012-01-23 16:08:09 -05:00
compaction.c	mm: compaction: fix echo 1 > compact_memory return error issue	2013-01-17 08:50:43 -08:00
debug-pagealloc.c	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	mm: dmapool: use provided gfp flags for all dma_alloc_coherent() calls	2012-12-17 10:37:44 -08:00
fadvise.c	mm/fadvise.c: drain all pagevecs if POSIX_FADV_DONTNEED fails to discard all pages	2013-02-28 06:59:01 -08:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap.c	radix-tree: use iterators in find_get_pages* functions	2012-03-28 17:14:37 -07:00
filemap_xip.c	mm/filemap_xip.c: fix race condition in xip_file_fault()	2012-02-03 16:16:41 -08:00
fremap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
highmem.c	mm: highmem: don't treat PKMAP_ADDR(LAST_PKMAP) as a highmem address	2014-06-11 12:04:22 -07:00
huge_memory.c	mm, thp: fix collapsing of hugepages on madvise	2015-02-02 17:05:07 +08:00
hugetlb.c	mm/hugetlb: add migration entry check in __unmap_hugepage_range	2015-06-19 11:40:15 +08:00
hwpoison-inject.c	HWPOISON: Clean up memory_failure() vs. __memory_failure()	2012-01-03 12:06:32 -08:00
init-mm.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
internal.h	mm: setup pageblock_order before it's used by sparsemem	2014-02-20 10:45:32 -08:00
Kconfig	Merge branch 'master' into x86/memblock	2011-11-28 09:46:22 -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	2014-07-31 12:54:53 -07:00
ksm.c	vm: add VM_FAULT_SIGSEGV handling support	2015-04-14 17:33:57 +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	mm: Hold a file reference in madvise_remove	2012-07-16 09:04:43 -07:00
Makefile	Cross Memory Attach	2011-10-31 17:30:44 -07:00
memblock.c	x86, mm: Trim memory in memblock to be page aligned	2012-10-31 10:02:56 -07:00
memcontrol.c	memcg: fix multiple large threshold notifications	2013-09-26 17:15:50 -07:00
memory-failure.c	mm/memory-failure.c: don't let collect_procs() skip over processes for MF_ACTION_REQUIRED	2014-06-30 20:01:31 -07:00
memory.c	mm/memory.c: actually remap enough memory	2015-06-19 11:40:16 +08:00
memory_hotplug.c	mm/hotplug: correctly add new zone to all other nodes' zone lists	2014-03-11 16:10:04 -07:00
mempolicy.c	slab/mempolicy: always use local policy from interrupt context	2014-09-25 11:49:17 +08:00
mempool.c	mempool: fix first round failure behavior	2012-01-10 16:30:45 -08:00
migrate.c	mm: migrate: Close race between migration completion and mprotect	2014-12-01 18:02:40 +08:00
mincore.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mlock.c	mm: try_to_unmap_cluster() should lock_page() before mlocking	2014-08-07 12:00:11 -07:00
mm_init.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmap.c	mm/mmap.c: fix arithmetic overflow in __vm_enough_memory()	2015-06-19 11:40:15 +08:00
mmu_context.c	mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()	2012-03-21 17:54:59 -07:00
mmu_notifier.c	mm: mmu_notifier: re-fix freed page still mapped in secondary MMU	2013-06-07 12:49:25 -07:00
mmzone.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
mprotect.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-03-22 09:04:48 -07:00
mremap.c	mm: collapse security_vm_enough_memory() variants into a single function	2012-02-14 10:45:39 +11:00
msync.c
nobootmem.c	memblock: free allocated memblock_reserved_regions later	2012-07-16 09:04:45 -07:00
nommu.c	mm/nommu.c: fix arithmetic overflow in __vm_enough_memory()	2015-06-19 11:40:15 +08:00
oom_kill.c	OOM, PM: OOM killed task shouldn't escape PM suspend	2015-02-02 17:04:55 +08:00
page-writeback.c	mm: protect set_page_dirty() from ongoing truncation	2015-04-14 17:33:51 +08:00
page_alloc.c	OOM, PM: OOM killed task shouldn't escape PM suspend	2015-02-02 17:04:55 +08:00
page_cgroup.c	cgroup/kmemleak: add kmemleak_free() for cgroup deallocations.	2015-02-02 17:05:07 +08:00
page_io.c	block: kill off REQ_UNPLUG	2011-03-10 08:52:27 +01:00
page_isolation.c
pagewalk.c	mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas	2013-06-07 12:49:28 -07:00
percpu-km.c
percpu-vm.c	percpu: perform tlb flush after pcpu_map_pages() failure	2014-12-01 18:02:23 +08:00
percpu.c	Revert "percpu: free percpu allocation info for uniprocessor system"	2015-02-02 17:04:38 +08:00
pgtable-generic.c	thp: add HPAGE_PMD_* definitions for !CONFIG_TRANSPARENT_HUGEPAGE	2012-03-21 17:55:02 -07:00
prio_tree.c	sanitize <linux/prefetch.h> usage	2011-05-20 12:50:29 -07:00
process_vm_access.c	Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys	2013-03-14 11:29:51 -07:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
rmap.c	mm: fix anon_vma->degree underflow in anon_vma endless growing prevention	2015-04-14 17:34:04 +08:00
shmem.c	shmem: fix nlink for rename overwrite directory	2014-12-01 18:02:39 +08:00
slab.c	cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags	2014-12-01 18:02:38 +08:00
slob.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
slub.c	slab/mempolicy: always use local policy from interrupt context	2014-09-25 11:49:17 +08:00
sparse-vmemmap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
sparse.c	mm: setup pageblock_order before it's used by sparsemem	2014-02-20 10:45:32 -08:00
swap.c	mm: hugetlbfs: fix hugetlbfs optimization	2014-02-06 11:05:46 -08:00
swap_state.c	swap: avoid read_swap_cache_async() race to deadlock while waiting on discard I/O completion	2013-06-20 11:58:45 -07:00
swapfile.c	swap: fix shmem swapping when more than 8 areas	2012-06-22 11:36:55 -07:00
thrash.c	mm/thrash.c: quiet sparse noise	2011-10-31 17:30:50 -07:00
truncate.c	mm: Remove false WARN_ON from pagecache_isize_extended()	2015-02-02 17:05:24 +08:00
util.c	procfs: mark thread stack correctly in proc/<pid>/maps	2012-03-21 17:54:58 -07:00
vmalloc.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2014-07-31 12:54:53 -07:00
vmscan.c	mm: vmscan: clear kswapd's special reclaim powers before exiting	2014-06-30 20:01:31 -07:00
vmstat.c	mm: fix up the vmscan stat in vmstat	2012-04-25 21:26:33 -07:00