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BUG: KCSAN: data-race in page_counter_charge / page_counter_try_charge

write to 0xffff88821b672150 of 8 bytes by task 14033 on cpu 1:
 page_counter_charge+0x76/0xb0 mm/page_counter.c:86
 mem_cgroup_migrate+0xbf/0x200 mm/memcontrol.c:6659
 migrate_page_states+0x52f/0x8f0 mm/migrate.c:652
 migrate_page_copy+0x27d/0x990 mm/migrate.c:663
 migrate_page+0xef/0x150 mm/migrate.c:691
 move_to_new_page+0xc8/0x3d0 mm/migrate.c:951
 __unmap_and_move mm/migrate.c:1117 [inline]
 unmap_and_move mm/migrate.c:1194 [inline]
 migrate_pages+0x1381/0x1930 mm/migrate.c:1423
 do_mbind+0x8df/0x9f0 mm/mempolicy.c:1317
 kernel_mbind+0x10e/0x130 mm/mempolicy.c:1438
 __do_sys_mbind mm/mempolicy.c:1445 [inline]
 __se_sys_mbind mm/mempolicy.c:1441 [inline]
 __x64_sys_mbind+0x7e/0xa0 mm/mempolicy.c:1441
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88821b672150 of 8 bytes by task 7763 on cpu 0:
 page_counter_try_charge+0x56/0x170 mm/page_counter.c:138
 try_charge+0x17f/0xbe0 mm/memcontrol.c:2405
 __memcg_kmem_charge_memcg+0x49/0xe0 mm/memcontrol.c:2837
 __memcg_kmem_charge+0xcd/0x1b0 mm/memcontrol.c:2877
 __alloc_pages_nodemask+0x268/0x310 mm/page_alloc.c:4755
 alloc_pages_current+0xca/0x170 mm/mempolicy.c:2211
 alloc_pages include/linux/gfp.h:532 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:63 [inline]
 pte_alloc_one+0x14/0x50 arch/x86/mm/pgtable.c:26
 __pte_alloc+0x27/0x210 mm/memory.c:426
 copy_pte_range mm/memory.c:816 [inline]
 copy_pmd_range mm/memory.c:892 [inline]
 copy_pud_range mm/memory.c:926 [inline]
 copy_p4d_range mm/memory.c:948 [inline]
 copy_page_range+0x1391/0x1a40 mm/memory.c:1010
 dup_mmap kernel/fork.c:610 [inline]
 dup_mm+0x72e/0xb90 kernel/fork.c:1366
 copy_mm kernel/fork.c:1422 [inline]
 copy_process+0x39ad/0x3b10 kernel/fork.c:2087
 _do_fork+0xf7/0x790 kernel/fork.c:2436
 __do_sys_clone kernel/fork.c:2591 [inline]
 __se_sys_clone kernel/fork.c:2572 [inline]
 __x64_sys_clone+0x12e/0x170 kernel/fork.c:2572
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7763 Comm: syz-executor.2 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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