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BUG: KCSAN: data-race in drain_all_stock / refill_stock

read-write to 0xffff888237d28370 of 4 bytes by task 11520 on cpu 1:
 __refill_stock mm/memcontrol.c:2247 [inline]
 refill_stock+0xcf/0x130 mm/memcontrol.c:2258
 try_charge_memcg+0x7da/0x960 mm/memcontrol.c:2699
 try_charge mm/memcontrol.c:2757 [inline]
 charge_memcg+0x63/0x2c0 mm/memcontrol.c:6720
 __mem_cgroup_charge+0x25/0xa0 mm/memcontrol.c:6741
 mem_cgroup_charge include/linux/memcontrol.h:689 [inline]
 wp_page_copy+0x20f/0x1460 mm/memory.c:3125
 do_wp_page+0x76f/0xe10
 handle_pte_fault mm/memory.c:4922 [inline]
 __handle_mm_fault mm/memory.c:5043 [inline]
 handle_mm_fault+0x5fb/0xa90 mm/memory.c:5141
 do_user_addr_fault+0x4cd/0x940 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x22/0x30

read to 0xffff888237d28370 of 4 bytes by task 11512 on cpu 0:
 drain_all_stock+0xb5/0x2e0 mm/memcontrol.c:2288
 try_charge_memcg+0x68a/0x960 mm/memcontrol.c:2630
 try_charge mm/memcontrol.c:2757 [inline]
 charge_memcg+0x63/0x2c0 mm/memcontrol.c:6720
 __mem_cgroup_charge+0x25/0xa0 mm/memcontrol.c:6741
 mem_cgroup_charge include/linux/memcontrol.h:689 [inline]
 wp_page_copy+0x20f/0x1460 mm/memory.c:3125
 do_wp_page+0x76f/0xe10
 handle_pte_fault mm/memory.c:4922 [inline]
 __handle_mm_fault mm/memory.c:5043 [inline]
 handle_mm_fault+0x5fb/0xa90 mm/memory.c:5141
 do_user_addr_fault+0x4cd/0x940 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x22/0x30

value changed: 0x00000000 -> 0x0000001c

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 11512 Comm: syz-executor.4 Not tainted 5.19.0-rc6-syzkaller-00104-g72a8e05d4f66-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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