Michal Hocko 33cb876e94 vmpressure: make sure there are no events queued after memcg is offlined ... vmpressure is called synchronously from reclaim where the target_memcg is guaranteed to be alive but the eventfd is signaled from the work queue context. This means that memcg (along with vmpressure structure which is embedded into it) might go away while the work item is pending which would result in use-after-release bug. We have two possible ways how to fix this. Either vmpressure pins memcg before it schedules vmpr->work and unpin it in vmpressure_work_fn or explicitely flush the work item from the css_offline context (as suggested by Tejun). This patch implements the later one and it introduces vmpressure_cleanup which flushes the vmpressure work queue item item. It hooks into mem_cgroup_css_offline after the memcg itself is cleaned up. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Michal Hocko <mhocko@suse.cz> Reported-by: Tejun Heo <tj@kernel.org> Cc: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Li Zefan <lizefan@huawei.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-07-31 14:41:04 -07:00
..
backing-dev.c	sysfs.h: add __ATTR_RW() macro	2013-07-16 10:57:36 -07:00
balloon_compaction.c
bootmem.c	mm: kill free_all_bootmem_node()	2013-07-03 16:07:39 -07:00
bounce.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
cleancache.c	mm: cleancache: clean up cleancache_enabled	2013-04-30 17:04:01 -07:00
compaction.c	mm: add & use zone_end_pfn() and zone_spans_pfn()	2013-02-23 17:50:20 -08:00
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_xip.c	lift sb_start_write() out of ->write()	2013-04-09 14:12:56 -04:00
filemap.c	mm: remove unused VM_<READfoo> macros and expand other in-place	2013-07-09 10:33:23 -07:00
fremap.c	Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"	2013-03-28 17:45:51 -07:00
frontswap.c	frontswap: fix incorrect zeroing and allocation size for frontswap_map	2013-06-12 16:29:46 -07:00
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	thp, mm: avoid PageUnevictable on active/inactive lru lists	2013-07-31 14:41:03 -07:00
hugetlb_cgroup.c
hugetlb.c	mm: correctly update zone->managed_pages	2013-07-03 16:07:33 -07:00
hwpoison-inject.c
init-mm.c
internal.h	mm: remove unused __put_page()	2013-07-09 10:33:22 -07:00
interval_tree.c
Kconfig	zswap: add to mm/	2013-07-10 18:11:34 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
ksm.c	ksm: fix m68k build: only NUMA needs pfn_to_nid	2013-03-08 15:05:34 -08:00
maccess.c
madvise.c	mm: madvise: complete input validation before taking lock	2013-04-29 15:54:37 -07:00
Makefile	zswap: add to mm/	2013-07-10 18:11:34 -07:00
memblock.c	mm/memblock.c: fix wrong comment in __next_free_mem_range()	2013-07-09 10:33:23 -07:00
memcontrol.c	vmpressure: make sure there are no events queued after memcg is offlined	2013-07-31 14:41:04 -07:00
memory_hotplug.c	mm/memory_hotplug.c: fix return value of online_pages()	2013-07-09 10:33:25 -07:00
memory-failure.c	mm/memory-failure.c: fix memory leak in successful soft offlining	2013-07-03 16:07:31 -07:00
memory.c	mm: remove unused VM_<READfoo> macros and expand other in-place	2013-07-09 10:33:23 -07:00
mempolicy.c	mm: mempolicy: fix mbind_range() && vma_adjust() interaction	2013-07-31 14:41:02 -07:00
mempool.c
migrate.c	mm: migration: add migrate_entry_wait_huge()	2013-06-12 16:29:46 -07:00
mincore.c	swap: make each swap partition have one address_space	2013-02-23 17:50:17 -08:00
mlock.c	Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"	2013-03-28 17:45:51 -07:00
mm_init.c	mm: tune vm_committed_as percpu_counter batching size	2013-07-03 16:07:32 -07:00
mmap.c	mm: mempolicy: fix mbind_range() && vma_adjust() interaction	2013-07-31 14:41:02 -07:00
mmu_context.c	mm: remove old aio use_mm() comment	2013-05-07 18:38:27 -07:00
mmu_notifier.c	treewide: relase -> release	2013-06-28 14:34:33 +02:00
mmzone.c	mm: rename page struct field helpers	2013-02-23 17:50:18 -08:00
mprotect.c
mremap.c	mm: mremap: validate input before taking lock	2013-07-09 10:33:20 -07:00
msync.c
nobootmem.c	mm: concentrate modification of totalram_pages into the mm core	2013-07-03 16:07:33 -07:00
nommu.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
oom_kill.c	memcg, oom: provide more precise dump info while memcg oom happening	2013-02-23 17:50:08 -08:00
page_alloc.c	mm: honor min_free_kbytes set by user	2013-07-09 10:33:25 -07:00
page_cgroup.c
page_io.c	mm: remove compressed copy from zram in-memory	2013-07-03 16:07:26 -07:00
page_isolation.c	mm: fix zone_watermark_ok_safe() accounting of isolated pages	2013-01-04 16:11:46 -08:00
page-writeback.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
pagewalk.c	mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas	2013-05-24 16:22:53 -07:00
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c	mm/THP: add pmd args to pgtable deposit and withdraw APIs	2013-06-20 16:55:07 +10:00
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	mm: change invalidatepage prototype to accept length	2013-05-21 23:17:23 -04:00
rmap.c	mm: remove unused VM_<READfoo> macros and expand other in-place	2013-07-09 10:33:23 -07:00
shmem.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2013-07-03 14:04:58 -07:00
slab_common.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-07-14 15:14:29 -07:00
slab.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
slab.h	mm/slab: Give s_next and s_stop slab-specific names	2013-07-08 11:02:17 +03:00
slob.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-07-14 15:14:29 -07:00
slub.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
sparse-vmemmap.c	sparse-vmemmap: specify vmemmap population range in bytes	2013-04-29 15:54:35 -07:00
sparse.c	mm/sparse.c: put clear_hwpoisoned_pages within CONFIG_MEMORY_HOTREMOVE	2013-07-09 10:33:22 -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
swap.c	thp, mm: avoid PageUnevictable on active/inactive lru lists	2013-07-31 14:41:03 -07:00
swapfile.c	swap: discard while swapping only if SWAP_FLAG_DISCARD_PAGES	2013-07-03 16:07:32 -07:00
truncate.c	mm: teach truncate_inode_pages_range() to handle non page aligned ranges	2013-05-27 23:32:35 -04:00
util.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
vmalloc.c	mm/vmalloc.c: fix an overflow bug in alloc_vmap_area()	2013-07-09 10:33:23 -07:00
vmpressure.c	vmpressure: make sure there are no events queued after memcg is offlined	2013-07-31 14:41:04 -07:00
vmscan.c	mm: vmscan: do not scale writeback pages when deciding whether to set ZONE_WRITEBACK	2013-07-09 10:33:23 -07:00
vmstat.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
zbud.c	mm: zbud: fix condition check on allocation size	2013-07-31 14:41:03 -07:00
zswap.c	zswap: add to mm/	2013-07-10 18:11:34 -07:00