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BUG: KCSAN: data-race in drain_all_stock / refill_stock

read-write to 0xffff888237c28370 of 4 bytes by task 22367 on cpu 0:
 __refill_stock mm/memcontrol.c:2247 [inline]
 refill_stock+0xcf/0x130 mm/memcontrol.c:2258
 obj_cgroup_uncharge_pages+0x75/0x130 mm/memcontrol.c:2978
 __memcg_kmem_uncharge_page+0x4f/0x100 mm/memcontrol.c:3051
 free_pages_prepare mm/page_alloc.c:1363 [inline]
 free_pcp_prepare+0x5e/0x1d0 mm/page_alloc.c:1443
 free_unref_page_prepare mm/page_alloc.c:3343 [inline]
 free_unref_page+0x23/0x100 mm/page_alloc.c:3438
 __vunmap+0x615/0x750 mm/vmalloc.c:2665
 __vfree mm/vmalloc.c:2713 [inline]
 __vmalloc_area_node mm/vmalloc.c:3048 [inline]
 __vmalloc_node_range+0xdfd/0xef0 mm/vmalloc.c:3165
 __bpf_map_area_alloc kernel/bpf/syscall.c:332 [inline]
 bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:339
 prealloc_init kernel/bpf/hashtab.c:334 [inline]
 htab_map_alloc+0x6ae/0xc00 kernel/bpf/hashtab.c:558
 find_and_alloc_map kernel/bpf/syscall.c:131 [inline]
 map_create+0x38a/0x710 kernel/bpf/syscall.c:1082
 __sys_bpf+0x296/0x630 kernel/bpf/syscall.c:4899
 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5019 [inline]
 __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5019
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888237c28370 of 4 bytes by task 22370 on cpu 1:
 drain_all_stock+0xb5/0x2e0 mm/memcontrol.c:2288
 try_charge_memcg+0x68a/0x960 mm/memcontrol.c:2630
 obj_cgroup_charge_pages mm/memcontrol.c:2999 [inline]
 __memcg_kmem_charge_page+0x2e4/0x480 mm/memcontrol.c:3025
 __alloc_pages+0x1c1/0x340 mm/page_alloc.c:5447
 alloc_pages+0x34d/0x450
 vm_area_alloc_pages mm/vmalloc.c:2927 [inline]
 __vmalloc_area_node mm/vmalloc.c:2995 [inline]
 __vmalloc_node_range+0x730/0xef0 mm/vmalloc.c:3165
 __bpf_map_area_alloc kernel/bpf/syscall.c:332 [inline]
 bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:339
 prealloc_init kernel/bpf/hashtab.c:334 [inline]
 htab_map_alloc+0x6ae/0xc00 kernel/bpf/hashtab.c:558
 find_and_alloc_map kernel/bpf/syscall.c:131 [inline]
 map_create+0x38a/0x710 kernel/bpf/syscall.c:1082
 __sys_bpf+0x296/0x630 kernel/bpf/syscall.c:4899
 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5019 [inline]
 __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5019
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000011 -> 0x0000001f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 22370 Comm: syz-executor.4 Not tainted 5.19.0-rc8-syzkaller-00155-g6a010258447d-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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