==================================================================
BUG: KCSAN: data-race in list_lru_add / list_lru_count_one

read to 0xffff88812b096418 of 8 bytes by task 31279 on cpu 1:
 list_lru_count_one+0xbd/0x130 mm/list_lru.c:193
 list_lru_shrink_count include/linux/list_lru.h:123 [inline]
 count_shadow_nodes+0x51/0x4a0 mm/workingset.c:437
 do_shrink_slab+0xb7/0x5a0 mm/vmscan.c:444
 shrink_slab mm/vmscan.c:687 [inline]
 shrink_slab+0x147/0x540 mm/vmscan.c:660
 shrink_node_memcgs mm/vmscan.c:2687 [inline]
 shrink_node+0x34a/0xfe0 mm/vmscan.c:2791
 shrink_zones mm/vmscan.c:2996 [inline]
 do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3049
 try_to_free_pages+0x1f5/0x4a0 mm/vmscan.c:3288
 __perform_reclaim mm/page_alloc.c:4124 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:4145 [inline]
 __alloc_pages_slowpath+0x45c/0xee0 mm/page_alloc.c:4562
 __alloc_pages_nodemask+0x2c8/0x310 mm/page_alloc.c:4776
 alloc_pages_vma+0xc1/0x3a0 mm/mempolicy.c:2170
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:208 [inline]
 do_anonymous_page mm/memory.c:3098 [inline]
 handle_pte_fault mm/memory.c:3943 [inline]
 __handle_mm_fault+0x1940/0x2e00 mm/memory.c:4075
 handle_mm_fault+0x21b/0x530 mm/memory.c:4112
 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline]
 __do_page_fault+0x456/0x8d0 arch/x86/mm/fault.c:1506
 do_page_fault+0x38/0x194 arch/x86/mm/fault.c:1530
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

write to 0xffff88812b096418 of 8 bytes by task 31134 on cpu 0:
 list_lru_add+0x20e/0x450 mm/list_lru.c:137
 workingset_update_node mm/workingset.c:419 [inline]
 workingset_update_node+0x115/0x130 mm/workingset.c:405
 xas_update lib/xarray.c:349 [inline]
 update_node lib/xarray.c:750 [inline]
 xas_store+0x20f/0xd00 lib/xarray.c:837
 page_cache_delete mm/filemap.c:137 [inline]
 __delete_from_page_cache+0x174/0x4a0 mm/filemap.c:238
 __remove_mapping+0x2db/0x530 mm/vmscan.c:939
 shrink_page_list+0xf57/0x2710 mm/vmscan.c:1439
 shrink_inactive_list+0x3d1/0x920 mm/vmscan.c:1959
 shrink_list mm/vmscan.c:2178 [inline]
 shrink_lruvec+0x4c8/0xd20 mm/vmscan.c:2496
 shrink_node_memcgs mm/vmscan.c:2685 [inline]
 shrink_node+0x2fe/0xfe0 mm/vmscan.c:2791
 shrink_zones mm/vmscan.c:2996 [inline]
 do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3049
 try_to_free_pages+0x1f5/0x4a0 mm/vmscan.c:3288
 __perform_reclaim mm/page_alloc.c:4124 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:4145 [inline]
 __alloc_pages_slowpath+0x45c/0xee0 mm/page_alloc.c:4562
 __alloc_pages_nodemask+0x2c8/0x310 mm/page_alloc.c:4776
 alloc_pages_vma+0xc1/0x3a0 mm/mempolicy.c:2170
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:208 [inline]
 do_anonymous_page mm/memory.c:3098 [inline]
 handle_pte_fault mm/memory.c:3943 [inline]
 __handle_mm_fault+0x1940/0x2e00 mm/memory.c:4075
 handle_mm_fault+0x21b/0x530 mm/memory.c:4112
 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline]
 __do_page_fault+0x456/0x8d0 arch/x86/mm/fault.c:1506
 do_page_fault+0x38/0x194 arch/x86/mm/fault.c:1530
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 31134 Comm: blkid Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================