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BUG: KCSAN: data-race in drain_all_stock / refill_stock

read-write to 0xffff888237d283b0 of 4 bytes by task 5271 on cpu 1:
 __refill_stock mm/memcontrol.c:2239 [inline]
 refill_stock+0xcf/0x130 mm/memcontrol.c:2250
 obj_cgroup_uncharge_pages+0x75/0x130 mm/memcontrol.c:2940
 __memcg_kmem_uncharge_page+0x4f/0x100 mm/memcontrol.c:3013
 free_pages_prepare mm/page_alloc.c:1348 [inline]
 free_pcp_prepare+0x5e/0x1d0 mm/page_alloc.c:1428
 free_unref_page_prepare mm/page_alloc.c:3328 [inline]
 free_unref_page+0x23/0x100 mm/page_alloc.c:3423
 __vunmap+0x615/0x750 mm/vmalloc.c:2667
 __vfree mm/vmalloc.c:2715 [inline]
 __vmalloc_area_node mm/vmalloc.c:3050 [inline]
 __vmalloc_node_range+0xdfd/0xef0 mm/vmalloc.c:3167
 __bpf_map_area_alloc kernel/bpf/syscall.c:330 [inline]
 bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:337
 bloom_map_alloc+0x229/0x370 kernel/bpf/bloom_filter.c:144
 find_and_alloc_map kernel/bpf/syscall.c:129 [inline]
 map_create+0x38a/0x6e0 kernel/bpf/syscall.c:864
 __sys_bpf+0x269/0x600 kernel/bpf/syscall.c:4645
 __do_sys_bpf kernel/bpf/syscall.c:4767 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4765 [inline]
 __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:4765
 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+0x44/0xae

read to 0xffff888237d283b0 of 4 bytes by task 5270 on cpu 0:
 drain_all_stock+0xb5/0x2e0 mm/memcontrol.c:2280
 try_charge_memcg+0x68a/0x960 mm/memcontrol.c:2622
 obj_cgroup_charge_pages mm/memcontrol.c:2961 [inline]
 __memcg_kmem_charge_page+0x2e4/0x480 mm/memcontrol.c:2987
 __alloc_pages+0x1a5/0x320 mm/page_alloc.c:5425
 alloc_pages+0x34d/0x450
 vm_area_alloc_pages mm/vmalloc.c:2929 [inline]
 __vmalloc_area_node mm/vmalloc.c:2997 [inline]
 __vmalloc_node_range+0x730/0xef0 mm/vmalloc.c:3167
 __bpf_map_area_alloc kernel/bpf/syscall.c:330 [inline]
 bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:337
 bloom_map_alloc+0x229/0x370 kernel/bpf/bloom_filter.c:144
 find_and_alloc_map kernel/bpf/syscall.c:129 [inline]
 map_create+0x38a/0x6e0 kernel/bpf/syscall.c:864
 __sys_bpf+0x269/0x600 kernel/bpf/syscall.c:4645
 __do_sys_bpf kernel/bpf/syscall.c:4767 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4765 [inline]
 __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:4765
 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+0x44/0xae

value changed: 0x00000004 -> 0x00000013

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 5270 Comm: syz-executor.2 Not tainted 5.18.0-rc5-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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