Grazvydas Ignotas 9db79db105 mm/memory.c: actually remap enough memory ...

commit 9cb12d7b4c 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-03-18 13:31:24 +01:00

..

backing-dev.c

bdi: avoid oops on device removal

2014-04-26 17:19:05 -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

block: Convert bio_for_each_segment() to bvec_iter

2013-11-23 22:33:49 -08:00

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/compaction: fix wrong order check in compact_finished()

2015-03-18 13:31:23 +01:00

debug-pagealloc.c

mm, x86: Remove debug_pagealloc_enabled

2011-12-06 09:24:07 +01:00

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: get rid of radix tree gfp mask for pagecache_get_page

2015-01-29 17:40:53 -08:00

fremap.c

mm: fix bad rss-counter if remap_file_pages raced migration

2014-03-19 16:21:49 -07:00

frontswap.c

mm: frontswap: invalidate expired data on a dup-store failure

2014-12-16 09:34:26 -08:00

highmem.c

Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

2012-12-20 08:37:05 -08:00

huge_memory.c

mm, thp: only collapse hugepages to nodes with affinity for zone_reclaim_mode

2015-01-29 17:40:52 -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/hugetlb: add migration entry check in __unmap_hugepage_range

2015-03-18 13:31:23 +01:00

hwpoison-inject.c

mm/hwpoison: add '#' to hwpoison_inject

2014-01-21 16:19:48 -08:00

init-mm.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

internal.h

mm, compaction: properly signal and act upon lock and need_sched() contention

2014-11-21 09:23:07 -08:00

interval_tree.c

mm: add CONFIG_DEBUG_VM_RB build option

2012-10-09 16:22:42 +09:00

Kconfig

parisc,metag: Do not hardcode maximum userspace stack size

2014-07-17 16:21:03 -07:00

Kconfig.debug

mm: more intensive memory corruption debugging

2012-01-10 16:30:42 -08:00

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

kmemleak: remove memset by using kzalloc

2011-01-27 18:31:51 +00:00

kmemleak.c

mm: kmemleak: avoid false negatives on vmalloc'ed objects

2013-11-13 12:09:07 +09:00

ksm.c

mm: close PageTail race

2014-03-04 07:55:47 -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

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

madvise.c

mm: madvise: fix MADV_WILLNEED on shmem swapouts

2014-11-21 09:23:06 -08:00

Makefile

mm: per-thread vma caching

2014-10-09 12:21:29 -07:00

memblock.c

memblock, memhotplug: fix wrong type in memblock_find_in_range_node().

2014-10-05 14:52:17 -07:00

memcontrol.c

mm: memcontrol: do not iterate uninitialized memcgs

2014-11-14 09:00:08 -08:00

memory_hotplug.c

mm, migration: add destination page freeing callback

2014-11-21 09:23:06 -08:00

memory-failure.c

mm, migration: add destination page freeing callback

2014-11-21 09:23:06 -08:00

memory.c

mm/memory.c: actually remap enough memory

2015-03-18 13:31:24 +01:00

mempolicy.c

mm, migration: add destination page freeing callback

2014-11-21 09:23:06 -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: fix direct reclaim writeback regression

2014-11-21 09:23:07 -08:00

mincore.c

mm + fs: prepare for non-page entries in page cache radix trees

2014-11-21 09:23:06 -08:00

mlock.c

mm: try_to_unmap_cluster() should lock_page() before mlocking

2014-05-06 07:59:35 -07:00

mm_init.c

mm: bring back /sys/kernel/mm

2014-01-27 21:02:39 -08:00

mmap.c

mm/mmap.c: fix arithmetic overflow in __vm_enough_memory()

2015-03-18 13:31:23 +01:00

mmu_context.c

mm: remove old aio use_mm() comment

2013-05-07 18:38:27 -07:00

mmu_notifier.c

mm: audit/fix non-modular users of module_init in core code

2014-01-23 16:36:52 -08:00

mmzone.c

mm: numa: Change page last {nid,pid} into {cpu,pid}

2013-10-09 14:47:45 +02:00

mprotect.c

mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit

2014-02-17 11:19:36 +11:00

mremap.c

mm, thp: close race between mremap() and split_huge_page()

2014-06-07 10:28:10 -07:00

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

nobootmem.c

mm/nobootmem: free_all_bootmem again

2014-01-23 16:36:52 -08:00

nommu.c

mm/nommu.c: fix arithmetic overflow in __vm_enough_memory()

2015-03-18 13:31:23 +01:00

oom_kill.c

OOM, PM: OOM killed task shouldn't escape PM suspend

2014-11-14 09:00:01 -08:00

page_alloc.c

mm: when stealing freepages, also take pages created by splitting buddy page

2015-03-18 13:31:23 +01:00

page_cgroup.c

cgroup/kmemleak: add kmemleak_free() for cgroup deallocations.

2014-11-14 09:00:07 -08:00

page_io.c

Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block

2014-01-30 11:19:05 -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

mm/page-writeback.c: fix divide by zero in bdi_dirty_limits()

2014-08-07 14:52:37 -07:00

pagewalk.c

mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range

2015-02-11 14:54:47 +08:00

percpu-km.c

percpu: clear memory allocated with the km allocator

2010-10-02 10:28:42 +03:00

percpu-vm.c

percpu: perform tlb flush after pcpu_map_pages() failure

2014-10-05 14:52:20 -07:00

percpu.c

Revert "percpu: free percpu allocation info for uniprocessor system"

2014-11-14 08:59:45 -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

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

readahead.c

mm/readahead.c: inline ra_submit

2014-11-21 09:23:06 -08:00

rmap.c

mm: fix anon_vma_clone() error treatment

2014-12-16 09:34:26 -08:00

shmem.c

shmem: fix init_page_accessed use to stop !PageLRU bug

2015-01-29 17:40:52 -08:00

slab_common.c

slab_common: fix the check for duplicate slab names

2014-07-31 12:52:55 -07:00

slab.c

mm: optimize put_mems_allowed() usage

2014-10-09 12:21:28 -07:00

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: optimize put_mems_allowed() usage

2014-10-09 12:21:28 -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/sparse: use memblock apis for early memory allocations

2014-01-21 16:19:47 -08:00

swap_state.c

mm: page_alloc: convert hot/cold parameter and immediate callers to bool

2015-01-29 17:40:51 -08:00

swap.c

mm: pagemap: avoid unnecessary overhead when tracepoints are deactivated

2015-01-29 17:40:52 -08:00

swapfile.c

swap: change swap_list_head to plist, add swap_avail_head

2014-10-09 12:21:28 -07:00

truncate.c

mm + fs: prepare for non-page entries in page cache radix trees

2014-11-21 09:23:06 -08:00

util.c

vm_is_stack: use for_each_thread() rather then buggy while_each_thread()

2014-09-05 16:34:18 -07:00

vmacache.c

mm: don't pointlessly use BUG_ON() for sanity check

2014-10-09 12:21:29 -07:00

vmalloc.c

vmalloc: use rcu list iterator to reduce vmap_area_lock contention

2015-01-29 17:40:52 -08:00

vmpressure.c

mm/vmpressure.c: fix race in vmpressure_work_fn()

2014-12-16 09:34:26 -08:00

vmscan.c

mm: move zone->pages_scanned into a vmstat counter

2015-01-29 17:40:53 -08:00

vmstat.c

mm: vmscan: only update per-cpu thresholds for online CPU

2015-01-29 17:40:53 -08:00

zbud.c

mm/zbud: fix some trivial typos in comments

2013-09-11 15:57:35 -07:00

zsmalloc.c

zsmalloc: add copyright

2014-01-30 16:56:55 -08:00

zswap.c

mm/zswap.c: change params from hidden to ro

2014-01-23 16:36:50 -08:00