Roman Gushchin 799a34d5b0 Revert "defer call to mem_cgroup_sk_alloc()" ... [ Upstream commit edbe69ef2c ] This patch effectively reverts commit 9f1c2674b3 ("net: memcontrol: defer call to mem_cgroup_sk_alloc()"). Moving mem_cgroup_sk_alloc() to the inet_csk_accept() completely breaks memcg socket memory accounting, as packets received before memcg pointer initialization are not accounted and are causing refcounting underflow on socket release. Actually the free-after-use problem was fixed by commit c0576e3975 ("net: call cgroup_sk_alloc() earlier in sk_clone_lock()") for the cgroup pointer. So, let's revert it and call mem_cgroup_sk_alloc() just before cgroup_sk_alloc(). This is safe, as we hold a reference to the socket we're cloning, and it holds a reference to the memcg. Also, let's drop BUG_ON(mem_cgroup_is_root()) check from mem_cgroup_sk_alloc(). I see no reasons why bumping the root memcg counter is a good reason to panic, and there are no realistic ways to hit it. Signed-off-by: Roman Gushchin <guro@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: David S. Miller <davem@davemloft.net> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-02-13 10:19:48 +01:00
..
kasan	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
backing-dev.c	mm/backing-dev.c: fix an error handling path in 'cgwb_create()'	2017-09-11 14:16:44 -06:00
balloon_compaction.c	mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY	2017-09-08 18:26:46 -07:00
bootmem.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
cleancache.c	fs: switch ->s_uuid to uuid_t	2017-06-05 16:59:12 +02:00
cma_debug.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
cma.c	mm/cma.c: take __GFP_NOWARN into account in cma_alloc()	2017-10-13 16:18:32 -07:00
cma.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
compaction.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
debug_page_ref.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
debug.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
dmapool.c	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
early_ioremap.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
fadvise.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
failslab.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
filemap.c	mm: have filemap_check_and_advance_wb_err clear AS_EIO/AS_ENOSPC	2017-10-03 17:54:24 -07:00
frame_vector.c	mm: fail get_vaddr_frames() for filesystem-dax mappings	2017-12-05 11:26:28 +01:00
frontswap.c	mm, frontswap: convert frontswap_enabled to static key	2016-07-26 16:19:19 -07:00
gup.c	mm, x86/mm: Fix performance regression in get_user_pages_fast()	2017-12-10 13:40:43 +01:00
highmem.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
hmm.c	mm/hmm: avoid bloating arch that do not make use of HMM	2017-09-08 18:26:46 -07:00
huge_memory.c	mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()	2017-12-05 11:26:28 +01:00
hugetlb_cgroup.c	mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size	2016-05-20 17:58:30 -07:00
hugetlb.c	mm/hugetlb: fix NULL-pointer dereference on 5-level paging machine	2017-12-05 11:26:30 +01:00
hwpoison-inject.c	mm: hwpoison: call shake_page() unconditionally	2017-05-03 15:52:12 -07:00
init-mm.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
internal.h	mm, oom: do not rely on TIF_MEMDIE for memory reserves access	2017-09-06 17:27:30 -07:00
interval_tree.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
Kconfig	mm/hmm: avoid bloating arch that do not make use of HMM	2017-09-08 18:26:46 -07:00
Kconfig.debug	mm: enable page poisoning early at boot	2017-05-03 15:52:10 -07:00
khugepaged.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kmemcheck.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kmemleak-test.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
kmemleak.c	kmemleak: add scheduling point to kmemleak_scan()	2018-02-03 17:39:12 +01:00
ksm.c	ksm: fix unlocked iteration over vmas in cmp_and_merge_page()	2017-10-03 17:54:23 -07:00
list_lru.c	mm: memcontrol: use vmalloc fallback for large kmem memcg arrays	2017-10-03 17:54:25 -07:00
maccess.c	x86: remove more uaccess_32.h complexity	2016-05-22 17:21:27 -07:00
madvise.c	mm/madvise.c: fix madvise() infinite loop under special circumstances	2017-12-05 11:26:29 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
memblock.c	mm/memblock.c: reversed logic in memblock_discard()	2017-08-25 16:12:46 -07:00
memcontrol.c	Revert "defer call to mem_cgroup_sk_alloc()"	2018-02-13 10:19:48 +01:00
memory_hotplug.c	mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long	2017-10-03 17:54:26 -07:00
memory-failure.c	x86/mm, mm/hwpoison: Clear PRESENT bit for kernel 1:1 mappings of poison pages	2017-08-17 10:30:49 +02:00
memory.c	mm/device-public-memory: fix edge case in _vm_normal_page()	2017-10-03 17:54:25 -07:00
mempolicy.c	mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter	2017-10-13 16:18:32 -07:00
mempool.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
memtest.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
migrate.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mincore.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mlock.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mm_init.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
mmap.c	mm, oom_reaper: fix memory corruption	2017-12-20 10:10:18 +01:00
mmu_context.c	sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
mmu_notifier.c	mm/mmu_notifier: kill invalidate_page	2017-08-31 16:13:00 -07:00
mmzone.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mprotect.c	mm/mprotect: add a cond_resched() inside change_pmd_range()	2018-01-10 09:31:17 +01:00
mremap.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
msync.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nobootmem.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nommu.c	Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-09-14 18:13:32 -07:00
oom_kill.c	mm, oom_reaper: fix memory corruption	2017-12-20 10:10:18 +01:00
page_alloc.c	mm, page_alloc: fix potential false positive in __zone_watermark_ok	2018-01-31 14:03:40 +01:00
page_counter.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_ext.c	mm/page_ext.c: check if page_ext is not prepared	2017-11-24 08:37:05 +01:00
page_idle.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_io.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_isolation.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_owner.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_poison.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_vma_mapped.c	mm, page_vma_mapped: Drop faulty pointer arithmetics in check_pte()	2018-01-23 19:58:21 +01:00
page-writeback.c	mm: rename global_page_state to global_zone_page_state	2017-09-06 17:27:29 -07:00
pagewalk.c	mm/pagewalk.c: report holes in hugetlb ranges	2017-11-24 08:37:04 +01:00
percpu-internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
percpu-km.c	percpu: replace area map allocator with bitmap	2017-07-26 17:41:05 -04:00
percpu-stats.c	percpu: fix starting offset for chunk statistics traversal	2017-09-27 14:45:57 -07:00
percpu-vm.c	percpu: fix static checker warnings in pcpu_destroy_chunk	2017-06-29 11:23:38 -04:00
percpu.c	mm, percpu: add support for __GFP_NOWARN flag	2017-10-19 13:13:49 +01:00
pgtable-generic.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
process_vm_access.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h>	2017-03-02 08:42:28 +01:00
quicklist.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
readahead.c	mm: don't cap request size based on read-ahead setting	2016-12-12 18:55:08 -08:00
rmap.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
rodata_test.c	mm: fix RODATA_TEST failure "rodata_test: test data was not read only"	2017-10-03 17:54:24 -07:00
shmem.c	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
slab_common.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
slab.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
slab.h	locking/barriers: Convert users of lockless_dereference() to READ_ONCE()	2017-12-25 14:26:21 +01:00
slob.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
slub.c	slub: fix sysfs duplicate filename creation when slub_debug=O	2017-12-14 09:53:10 +01:00
sparse-vmemmap.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sparse.c	mm/sparse.c: wrong allocation for mem_section	2018-01-10 09:31:17 +01:00
swap_cgroup.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
swap_slots.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
swap_state.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
swap.c	mm: avoid marking swap cached page as lazyfree	2017-10-03 17:54:24 -07:00
swapfile.c	mm, swap: fix race between swap count continuation operations	2017-11-03 07:39:19 -07:00
truncate.c	mm/truncate.c: fix THP handling in invalidate_mapping_pages()	2017-07-10 16:32:32 -07:00
usercopy.c	mm/usercopy: Drop extra is_vmalloc_or_module() check	2017-04-05 12:30:18 -07:00
userfaultfd.c	userfaultfd: shmem: wire up shmem_mfill_zeropage_pte	2017-09-06 17:27:28 -07:00
util.c	mm: rename global_page_state to global_zone_page_state	2017-09-06 17:27:29 -07:00
vmacache.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vmalloc.c	Revert "vmalloc: back off when the current task is killed"	2017-10-13 16:18:32 -07:00
vmpressure.c	mm, vmpressure: pass-through notification support	2017-07-10 16:32:31 -07:00
vmscan.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vmstat.c	mm: consider the number in local CPUs when reading NUMA stats	2017-09-08 18:26:47 -07:00
workingset.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
z3fold.c	mm/z3fold.c: use kref to prevent page free/compact race	2017-11-30 08:40:44 +00:00
zbud.c	mm/zbud.c: use list_last_entry() instead of list_tail_entry()	2016-01-15 11:40:52 -08:00
zpool.c	mm: zsmalloc: constify struct zs_pool name	2015-11-06 17:50:42 -08:00
zsmalloc.c	zsmalloc: calling zs_map_object() from irq is a bug	2017-12-14 09:53:10 +01:00
zswap.c	mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare()	2017-07-06 16:24:35 -07:00