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Andrea Arcangeli 93d5c9be1d memcg: fix prepare migration 
If a signal is pending (task being killed by sigkill)
__mem_cgroup_try_charge will write NULL into &mem, and css_put will oops
on null pointer dereference.

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
  IP: [<ffffffff810fc6cc>] mem_cgroup_prepare_migration+0x7c/0xc0
  PGD a5d89067 PUD a5d8a067 PMD 0
  Oops: 0000 [#1] SMP
  last sysfs file: /sys/devices/platform/microcode/firmware/microcode/loading
  CPU 0
  Modules linked in: nfs lockd nfs_acl auth_rpcgss sunrpc acpi_cpufreq pcspkr sg [last unloaded: microcode]

  Pid: 5299, comm: largepages Tainted: G        W  2.6.34-rc3 #3 Penryn1600SLI-110dB/To Be Filled By O.E.M.
  RIP: 0010:[<ffffffff810fc6cc>]  [<ffffffff810fc6cc>] mem_cgroup_prepare_migration+0x7c/0xc0

[nishimura@mxp.nes.nec.co.jp: fix merge issues]
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-24 11:31:24 -07:00
..
backing-dev.c
backing-dev: Handle class_create() failure
2010-04-02 09:46:55 +02:00
bootmem.c
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip
2010-04-07 11:02:23 -07:00
bounce.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
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: introduce FMODE_RANDOM for POSIX_FADV_RANDOM
2010-03-06 11:26:25 -08:00
failslab.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
filemap_xip.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
filemap.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
fremap.c
mm: clean up mm_counter
2010-03-06 11:26:23 -08:00
highmem.c
grammar fix in comment
2010-02-05 12:22:40 +01:00
hugetlb.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
hwpoison-inject.c
HWPOISON: Don't do early filtering if filter is disabled
2009-12-16 12:20:01 +01:00
init-mm.c
mm: consolidate init_mm definition
2009-06-16 19:47:28 -07:00
internal.h
HWPOISON: add an interface to switch off/on all the page filters
2009-12-16 12:19:59 +01:00
Kconfig
Merge branch 'x86-bootmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-03-03 08:15:05 -08:00
Kconfig.debug
trivial: improve help text for mm debug config options
2009-09-21 15:14:57 +02:00
kmemcheck.c
kmemcheck: Fix build errors due to missing slab.h
2010-03-30 22:02:32 +09:00
kmemleak-test.c
percpu: clean up percpu variable definitions
2009-06-24 15:13:48 +09:00
kmemleak.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ksm.c
mm/ksm.c is doing an unneeded _notify in write_protect_page.
2010-03-24 16:31:20 -07:00
maccess.c
maccess,probe_kernel: Allow arch specific override probe_kernel_(read|write)
2010-01-07 11:58:36 -06:00
madvise.c
HWPOISON: Add a madvise() injector for soft page offlining
2009-12-16 12:20:00 +01:00
Makefile
percpu: don't implicitly include slab.h from percpu.h
2010-03-30 22:02:32 +09:00
memcontrol.c
memcg: fix prepare migration
2010-04-24 11:31:24 -07:00
memory_hotplug.c
mm: introduce dump_page() and print symbolic flag names
2010-03-12 15:52:28 -08:00
memory-failure.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
memory.c
mm: avoid null-pointer deref in sync_mm_rss()
2010-04-07 08:38:02 -07:00
mempolicy.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
mempool.c
mm: remove broken 'kzalloc' mempool
2009-09-22 07:17:35 -07:00
migrate.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
mincore.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
mlock.c
mm: use rlimit helpers
2010-03-06 11:26:24 -08:00
mm_init.c
mm: mminit_loglevel cannot be __meminitdata anymore
2008-08-20 15:40:30 -07:00
mmap.c
vma_adjust: fix the copying of anon_vma chains
2010-04-12 17:54:11 -07:00
mmu_context.c
exit: fix oops in sync_mm_rss
2010-03-24 16:31:21 -07:00
mmu_notifier.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
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
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
mremap.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
msync.c
[CVE-2009-0029] System call wrappers part 13
2009-01-14 14:15:23 +01:00
nommu.c
NOMMU: Fix __get_user_pages() to pin last page on offset buffers
2010-03-25 14:13:27 -07:00
oom_kill.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
page_alloc.c
mm: introduce dump_page() and print symbolic flag names
2010-03-12 15:52:28 -08:00
page_cgroup.c
memcg: avoid use cmpxchg in swap cgroup maintainance
2010-03-17 18:43:47 -07:00
page_io.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
page_isolation.c
memory hotplug: fix page_zone() calculation in test_pages_isolated()
2008-11-06 15:41:19 -08:00
page-writeback.c
writeback: remove unused nonblocking and congestion checks
2009-12-03 13:54:25 +01:00
pagewalk.c
pagemap: fix pfn calculation for hugepage
2010-04-07 08:38:04 -07:00
percpu_up.c
percpu: don't implicitly include slab.h from percpu.h
2010-03-30 22:02:32 +09:00
percpu.c
percpu, module: implement and use is_kernel/module_percpu_address()
2010-03-29 23:07:12 +09:00
prio_tree.c
spelling fixes: mm/
2007-10-20 01:27:18 +02:00
quicklist.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
readahead.c
readahead: fix NULL filp dereference
2010-04-07 08:38:03 -07:00
rmap.c
rmap: add exclusively owned pages to the newest anon_vma
2010-04-19 16:28:20 -07:00
shmem.c
Fix breakage in shmem.c
2009-12-16 19:48:48 -05:00
slab.c
slab: Generify kernel pointer validation
2010-04-09 10:09:50 -07:00
slob.c
slab: remove duplicate kmem_cache_init_late() declarations
2009-08-06 11:36:25 +03:00
slub.c
slub: Fix kmem_ptr_validate() for non-kernel pointers
2010-04-09 10:09:50 -07:00
sparse-vmemmap.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
sparse.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
swap_state.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
swap.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
swapfile.c
memcg: move charges of anonymous swap
2010-03-12 15:52:36 -08:00
thrash.c
mm: pass mm to grab_swap_token
2009-06-23 12:50:05 -07:00
truncate.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
util.c
slab: Generify kernel pointer validation
2010-04-09 10:09:50 -07:00
vmalloc.c
mm: purge fragmented percpu vmap blocks
2010-02-02 12:50:47 -08:00
vmscan.c
mm: revert "vmscan: get_scan_ratio() cleanup"
2010-04-07 08:38:03 -07:00
vmstat.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00