KAMEZAWA Hiroyuki 0c98d0c6dc memcg: fix wrong pointer initialization at page migration when memcg is disabled. ...

commit e00e431612c3a6e437a01f2129fd3843da0c982a upstream.

Lee Schermerhorn reported that he saw bad pointer dereference in
mem_cgroup_end_migration() when he disabled memcg by boot option.

memcg's page migration logic works as

	mem_cgroup_prepare_migration(page, &ptr);
	do page migration
	mem_cgroup_end_migration(page, ptr);

Now, ptr is not initialized in prepare_migration when memcg is disabled
by boot option. This causes panic in end_migration. This patch fixes it.

Reported-by: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
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@suse.de>

2009-12-08 10:21:20 -08:00

..

allocpercpu.c

percpu: __percpu_depopulate_mask can take a const mask

2009-04-06 13:44:15 -07:00

backing-dev.c

Fix congestion_wait() sync/async vs read/write confusion

2009-07-10 20:31:53 +02:00

bootmem.c

kmemleak: Add callbacks to the bootmem allocator

2009-07-08 14:25:14 +01:00

bounce.c

block: remove some includings of blktrace_api.h

2009-06-16 11:19:36 +02:00

debug-pagealloc.c

generic debug pagealloc

2009-04-01 08:59:13 -07:00

dmapool.c

dmapools: protect page_list walk in show_pools()

2009-06-30 18:56:00 -07:00

fadvise.c

readahead: move max_sane_readahead() calls into force_page_cache_readahead()

2009-06-16 19:47:28 -07:00

failslab.c

kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c

2009-04-03 12:23:01 +02:00

filemap_xip.c

mm: do_xip_mapping_read: fix length calculation

2009-04-02 19:04:49 -07:00

filemap.c

mm: mark page accessed before we write_end()

2009-07-06 13:57:03 -07:00

fremap.c

Do not account for the address space used by hugetlbfs using VM_ACCOUNT

2009-02-10 10:48:42 -08:00

highmem.c

highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE

2009-12-08 10:21:09 -08:00

hugetlb.c

hugetlb: restore interleaving of bootmem huge pages (2.6.31)

2009-10-05 09:32:54 -07:00

init-mm.c

mm: consolidate init_mm definition

2009-06-16 19:47:28 -07:00

internal.h

vmscan: do not unconditionally treat zones that fail zone_reclaim() as full

2009-06-16 19:47:45 -07:00

Kconfig

Security/SELinux: seperate lsm specific mmap_min_addr

2009-08-17 15:09:11 +10:00

Kconfig.debug

kmemcheck: enable in the x86 Kconfig

2009-06-15 15:49:15 +02:00

kmemcheck.c

kmemcheck: add hooks for the page allocator

2009-06-15 15:48:33 +02:00

kmemleak-test.c

kmemleak: Simple testing module for kmemleak

2009-06-11 17:04:19 +01:00

kmemleak.c

kmemleak: Protect the seq start/next/stop sequence by rcu_read_lock()

2009-07-29 12:34:58 -07:00

maccess.c

[S390] maccess: add weak attribute to probe_kernel_write

2009-06-12 10:27:37 +02:00

madvise.c

mm: madvise(): correct return code

2009-06-16 19:47:40 -07:00

Makefile

Merge branch 'akpm'

2009-06-16 19:50:13 -07:00

memcontrol.c

cgroup avoid permanent sleep at rmdir

2009-07-29 19:10:35 -07:00

memory_hotplug.c

page-allocator: reset wmark_min and inactive ratio of zone when hotplug happens

2009-06-16 19:47:42 -07:00

memory.c

mm: fix anonymous dirtying

2009-10-05 09:32:56 -07:00

mempolicy.c

do_mbind(): fix memory leak

2009-11-09 16:22:11 -08:00

mempool.c

mempool.c: clean up type-casting

2009-08-10 08:31:16 -07:00

migrate.c

memcg: fix wrong pointer initialization at page migration when memcg is disabled.

2009-12-08 10:21:20 -08:00

mincore.c

[CVE-2009-0029] System call wrappers part 14

2009-01-14 14:15:24 +01:00

mlock.c

mm: munlock use follow_page

2009-10-05 09:32:56 -07:00

mm_init.c

mm: mminit_loglevel cannot be __meminitdata anymore

2008-08-20 15:40:30 -07:00

mmap.c

mmap: avoid unnecessary anon_vma lock acquisition in vma_adjust()

2009-10-05 09:32:58 -07:00

mmu_notifier.c

mmu-notifiers: core

2008-07-28 16:30:21 -07:00

mmzone.c

[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2

2009-05-18 11:22:24 +01:00

mprotect.c

perf_counter: Add mmap event hooks to mprotect()

2009-06-08 23:10:43 +02:00

mremap.c

[CVE-2009-0029] System call wrappers part 13

2009-01-14 14:15:23 +01:00

msync.c

[CVE-2009-0029] System call wrappers part 13

2009-01-14 14:15:23 +01:00

nommu.c

NOMMU: Don't pass NULL pointers to fput() in do_mmap_pgoff()

2009-11-09 16:22:33 -08:00

oom_kill.c

mm: revert "oom: move oom_adj value"

2009-08-18 16:31:13 -07:00

page_alloc.c

page-allocator: limit the number of MIGRATE_RESERVE pageblocks per zone

2009-10-05 09:32:55 -07:00

page_cgroup.c

memcg: remove some redundant checks

2009-06-18 13:03:47 -07:00

page_io.c

mm: remove file argument from swap_readpage()

2009-06-16 19:47:44 -07:00

page_isolation.c

memory hotplug: fix page_zone() calculation in test_pages_isolated()

2008-11-06 15:41:19 -08:00

page-writeback.c

Fix congestion_wait() sync/async vs read/write confusion

2009-07-10 20:31:53 +02:00

pagewalk.c

pagemap: pass mm into pagewalkers

2008-06-12 18:05:41 -07:00

pdflush.c

Revert "mm: add /proc controls for pdflush threads"

2009-05-15 11:32:24 +02:00

percpu.c

percpu: don't assume existence of cpu0

2009-09-01 21:23:18 +09:00

prio_tree.c

…

quicklist.c

cpumask: replace node_to_cpumask with cpumask_of_node.

2009-03-13 14:49:46 +10:30

readahead.c

readahead: introduce context readahead algorithm

2009-06-16 19:47:30 -07:00

rmap.c

mm: fix for infinite churning of mlocked pages

2009-08-26 20:06:52 -07:00

shmem_acl.c

switch shmem to inode->i_acl

2009-06-24 08:17:06 -04:00

shmem.c

Get "no acls for this inode" right, fix shmem breakage

2009-06-24 16:58:48 -04:00

slab.c

SLAB: Fix lockdep annotations

2009-06-29 09:57:10 +03:00

slob.c

fix RCU-callback-after-kmem_cache_destroy problem in sl[aou]b

2009-06-26 12:10:47 +03:00

slub.c

slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU

2009-09-03 22:38:59 +03:00

sparse-vmemmap.c

vmemmap: warn about page_structs with remote distance

2008-11-06 15:41:19 -08:00

sparse.c

mm: mminit_validate_memmodel_limits(): remove redundant test

2009-04-01 08:59:11 -07:00

swap_state.c

mm: add_to_swap_cache() must not sleep

2009-10-12 12:40:21 -07:00

swap.c

mm: fix Committed_AS underflow on large NR_CPUS environment

2009-05-02 15:36:10 -07:00

swapfile.c

mm: remove incorrect swap_count() from try_to_unuse()

2009-11-09 16:22:33 -08:00

thrash.c

mm: pass mm to grab_swap_token

2009-06-23 12:50:05 -07:00

truncate.c

mm: remove __invalidate_mapping_pages variant

2009-06-16 19:47:43 -07:00

util.c

Merge branches 'slab/documentation', 'slab/fixes', 'slob/cleanups' and 'slub/fixes' into for-linus

2009-06-17 08:30:15 +03:00

vmalloc.c

Merge branch 'for-linus' of git://linux-arm.org/linux-2.6

2009-06-11 14:15:57 -07:00

vmscan.c

vmscan: limit VM_EXEC protection to file pages

2009-11-09 16:23:05 -08:00

vmstat.c

vmscan: count the number of times zone_reclaim() scans and fails

2009-06-16 19:47:46 -07:00