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BUG: KCSAN: data-race in list_lru_add / list_lru_count_one

write to 0xffff88809c2a9550 of 8 bytes by task 8886 on cpu 1:
 list_lru_add+0x20e/0x450 mm/list_lru.c:137
 inode_lru_list_add fs/inode.c:427 [inline]
 inode_add_lru fs/inode.c:443 [inline]
 inode_add_lru+0x10c/0x170 fs/inode.c:438
 iput_final fs/inode.c:1552 [inline]
 iput+0x4a8/0x4e0 fs/inode.c:1597
 dentry_unlink_inode+0x281/0x2f0 fs/dcache.c:374
 __dentry_kill+0x220/0x3c0 fs/dcache.c:579
 shrink_dentry_list+0x10e/0x1c0 fs/dcache.c:1122
 prune_dcache_sb+0x96/0xc0 fs/dcache.c:1203
 super_cache_scan+0x1d1/0x2c0 fs/super.c:105
 do_shrink_slab+0x2b6/0x5a0 mm/vmscan.c:512
 shrink_slab_memcg mm/vmscan.c:582 [inline]
 shrink_slab+0x469/0x540 mm/vmscan.c:661
 shrink_node_memcgs mm/vmscan.c:2673 [inline]
 shrink_node+0x34a/0xfe0 mm/vmscan.c:2777
 shrink_zones mm/vmscan.c:2980 [inline]
 do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3033
 try_to_free_pages+0x1f5/0x4a0 mm/vmscan.c:3272
 __perform_reclaim mm/page_alloc.c:4113 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:4134 [inline]
 __alloc_pages_slowpath+0x422/0xec0 mm/page_alloc.c:4537
 __alloc_pages_nodemask+0x2c8/0x310 mm/page_alloc.c:4751
 alloc_pages_vma+0xc1/0x3a0 mm/mempolicy.c:2174
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:208 [inline]
 do_anonymous_page mm/memory.c:3186 [inline]
 handle_pte_fault mm/memory.c:4031 [inline]
 __handle_mm_fault+0x1940/0x2e00 mm/memory.c:4163
 handle_mm_fault+0x21b/0x530 mm/memory.c:4200
 do_user_addr_fault arch/x86/mm/fault.c:1442 [inline]
 do_page_fault+0x496/0xa3d arch/x86/mm/fault.c:1517
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

read to 0xffff88809c2a9550 of 8 bytes by task 8522 on cpu 0:
 list_lru_count_one+0xbd/0x130 mm/list_lru.c:193
 list_lru_shrink_count include/linux/list_lru.h:123 [inline]
 super_cache_count+0x11a/0x1b0 fs/super.c:148
 do_shrink_slab+0xb7/0x5a0 mm/vmscan.c:430
 shrink_slab_memcg mm/vmscan.c:582 [inline]
 shrink_slab+0x469/0x540 mm/vmscan.c:661
 shrink_node_memcgs mm/vmscan.c:2673 [inline]
 shrink_node+0x34a/0xfe0 mm/vmscan.c:2777
 shrink_zones mm/vmscan.c:2980 [inline]
 do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3033
 try_to_free_pages+0x1f5/0x4a0 mm/vmscan.c:3272
 __perform_reclaim mm/page_alloc.c:4113 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:4134 [inline]
 __alloc_pages_slowpath+0x422/0xec0 mm/page_alloc.c:4537
 __alloc_pages_nodemask+0x2c8/0x310 mm/page_alloc.c:4751
 alloc_pages_vma+0xc1/0x3a0 mm/mempolicy.c:2174
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:208 [inline]
 do_anonymous_page mm/memory.c:3186 [inline]
 handle_pte_fault mm/memory.c:4031 [inline]
 __handle_mm_fault+0x1940/0x2e00 mm/memory.c:4163
 handle_mm_fault+0x21b/0x530 mm/memory.c:4200
 do_user_addr_fault arch/x86/mm/fault.c:1442 [inline]
 do_page_fault+0x496/0xa3d arch/x86/mm/fault.c:1517
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8522 Comm: blkid Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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