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BUG: KCSAN: data-race in page_counter_try_charge / page_counter_try_charge

write to 0xffff88812bcfe1b0 of 8 bytes by task 10552 on cpu 1:
 page_counter_try_charge+0x7e/0x170 mm/page_counter.c:139
 hugetlb_cgroup_charge_cgroup+0x110/0x3e0 mm/hugetlb_cgroup.c:240
 alloc_huge_page+0x182/0x910 mm/hugetlb.c:2042
 hugetlb_no_page+0x1b6/0xc40 mm/hugetlb.c:3855
 hugetlb_fault+0x9fc/0xbc0 mm/hugetlb.c:4041
 handle_mm_fault+0x4b4/0x530 mm/memory.c:4198
 do_user_addr_fault arch/x86/mm/fault.c:1442 [inline]
 do_page_fault+0x496/0xa3d arch/x86/mm/fault.c:1517
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

read to 0xffff88812bcfe1b0 of 8 bytes by task 10545 on cpu 0:
 page_counter_try_charge+0x58/0x170 mm/page_counter.c:138
 hugetlb_cgroup_charge_cgroup+0x110/0x3e0 mm/hugetlb_cgroup.c:240
 alloc_huge_page+0x182/0x910 mm/hugetlb.c:2042
 hugetlb_no_page+0x1b6/0xc40 mm/hugetlb.c:3855
 hugetlb_fault+0x9fc/0xbc0 mm/hugetlb.c:4041
 handle_mm_fault+0x4b4/0x530 mm/memory.c:4198
 do_user_addr_fault arch/x86/mm/fault.c:1442 [inline]
 do_page_fault+0x496/0xa3d arch/x86/mm/fault.c:1517
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10545 Comm: syz-executor.1 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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