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BUG: KCSAN: data-race in drain_all_stock / refill_stock

read-write to 0xffff888237d283f0 of 4 bytes by task 23277 on cpu 1:
 __refill_stock mm/memcontrol.c:2249 [inline]
 refill_stock+0xcf/0x130 mm/memcontrol.c:2260
 obj_cgroup_uncharge_pages+0x75/0x130 mm/memcontrol.c:3019
 __memcg_kmem_uncharge_page+0x4f/0x100 mm/memcontrol.c:3092
 free_pages_prepare mm/page_alloc.c:1441 [inline]
 free_pcp_prepare+0x5e/0x1d0 mm/page_alloc.c:1521
 free_unref_page_prepare mm/page_alloc.c:3380 [inline]
 free_unref_page+0x26/0x220 mm/page_alloc.c:3476
 __vunmap+0x615/0x750 mm/vmalloc.c:2696
 __vfree mm/vmalloc.c:2744 [inline]
 __vmalloc_area_node mm/vmalloc.c:3079 [inline]
 __vmalloc_node_range+0xdfd/0xef0 mm/vmalloc.c:3196
 __bpf_map_area_alloc kernel/bpf/syscall.c:332 [inline]
 bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:339
 bloom_map_alloc+0x229/0x370 kernel/bpf/bloom_filter.c:145
 find_and_alloc_map kernel/bpf/syscall.c:131 [inline]
 map_create+0x38a/0x6f0 kernel/bpf/syscall.c:1102
 __sys_bpf+0x296/0x630 kernel/bpf/syscall.c:4936
 __do_sys_bpf kernel/bpf/syscall.c:5058 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5056 [inline]
 __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5056
 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 0xffff888237d283f0 of 4 bytes by task 23280 on cpu 0:
 drain_all_stock+0xb5/0x2e0 mm/memcontrol.c:2290
 try_charge_memcg+0x63a/0xa40 mm/memcontrol.c:2635
 obj_cgroup_charge_pages mm/memcontrol.c:3040 [inline]
 __memcg_kmem_charge_page+0x2e4/0x480 mm/memcontrol.c:3066
 __alloc_pages+0x1c1/0x340 mm/page_alloc.c:5532
 alloc_pages+0x34d/0x450
 vm_area_alloc_pages mm/vmalloc.c:2958 [inline]
 __vmalloc_area_node mm/vmalloc.c:3026 [inline]
 __vmalloc_node_range+0x730/0xef0 mm/vmalloc.c:3196
 __bpf_map_area_alloc kernel/bpf/syscall.c:332 [inline]
 bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:339
 bloom_map_alloc+0x229/0x370 kernel/bpf/bloom_filter.c:145
 find_and_alloc_map kernel/bpf/syscall.c:131 [inline]
 map_create+0x38a/0x6f0 kernel/bpf/syscall.c:1102
 __sys_bpf+0x296/0x630 kernel/bpf/syscall.c:4936
 __do_sys_bpf kernel/bpf/syscall.c:5058 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5056 [inline]
 __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5056
 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: 0x00000019 -> 0x0000001a

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23280 Comm: syz-executor.5 Not tainted 5.19.0-syzkaller-12567-g1612c382ffbd-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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